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[PATCH kernel-4.19] can: bcm: delay release of struct bcm_op after synchronize_rcu()
by Yang Yingliang 01 Jul '21

01 Jul '21

From: Thadeu Lima de Souza Cascardo <cascardo(a)canonical.com> mainline inclusion from mainline-v5.14-rc1 commit d5f9023fa61ee8b94f37a93f08e94b136cf1e463 category: bugfix bugzilla: NA CVE: CVE-2021-3609 -------------------------------- can_rx_register() callbacks may be called concurrently to the call to can_rx_unregister(). The callbacks and callback data, though, are protected by RCU and the struct sock reference count. So the callback data is really attached to the life of sk, meaning that it should be released on sk_destruct. However, bcm_remove_op() calls tasklet_kill(), and RCU callbacks may be called under RCU softirq, so that cannot be used on kernels before the introduction of HRTIMER_MODE_SOFT. However, bcm_rx_handler() is called under RCU protection, so after calling can_rx_unregister(), we may call synchronize_rcu() in order to wait for any RCU read-side critical sections to finish. That is, bcm_rx_handler() won't be called anymore for those ops. So, we only free them, after we do that synchronize_rcu(). Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol") Link: https://lore.kernel.org/r/20210619161813.2098382-1-cascardo@canonical.com Cc: linux-stable <stable(a)vger.kernel.org> Reported-by: syzbot+0f7e7e5e2f4f40fa89c0(a)syzkaller.appspotmail.com Reported-by: Norbert Slusarek <nslusarek(a)gmx.net> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo(a)canonical.com> Acked-by: Oliver Hartkopp <socketcan(a)hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl(a)pengutronix.de> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Reviewed-by: Yue Haibing <yuehaibing(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- net/can/bcm.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/can/bcm.c b/net/can/bcm.c index 0f09838ebef6e..e66377e764ba9 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -824,6 +824,7 @@ static int bcm_delete_rx_op(struct list_head *ops, struct bcm_msg_head *mh, bcm_rx_handler, op); list_del(&op->list); + synchronize_rcu(); bcm_remove_op(op); return 1; /* done */ } @@ -1557,9 +1558,13 @@ static int bcm_release(struct socket *sock) REGMASK(op->can_id), bcm_rx_handler, op); - bcm_remove_op(op); } + synchronize_rcu(); + + list_for_each_entry_safe(op, next, &bo->rx_ops, list) + bcm_remove_op(op); + #if IS_ENABLED(CONFIG_PROC_FS) /* remove procfs entry */ if (net->can.bcmproc_dir && bo->bcm_proc_read) -- 2.25.1

1 0

[PATCH kernel-4.19] etmem_scan: fix memleak in vm_idle_read
by Yang Yingliang 01 Jul '21

01 Jul '21

From: Kemeng Shi <shikemeng(a)huawei.com> euleros inclusion category: bugfix bugzilla: NA ------------------------------ Struct page_idle_ctrl is alloced at beginning of vm_idle_read, but it's not freed when vm_idle_read ends. Fixes: 2ca27c4642db5 ("etmem: add etmem-scan feature") Signed-off-by: Kemeng Shi <shikemeng(a)huawei.com> Reviewed-by: Jing Xiangfeng<jingxiangfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- fs/proc/etmem_scan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/proc/etmem_scan.c b/fs/proc/etmem_scan.c index 94bf125de6072..2bac5ecd53164 100644 --- a/fs/proc/etmem_scan.c +++ b/fs/proc/etmem_scan.c @@ -753,6 +753,7 @@ static ssize_t vm_idle_read(struct file *file, char *buf, ret = pic->bytes_copied; *ppos = pic->next_hva; out_kvm: + kfree(pic); return ret; } -- 2.25.1

1 0

[PATCH openEuler-1.0-LTS] x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
by Yang Yingliang 01 Jul '21

01 Jul '21

From: Masami Hiramatsu <mhiramat(a)kernel.org> stable inclusion from linux-4.19.163 commit 6bb78b3fff90fcf76991f689822ae58a4feee36d -------------------------------- commit 4e9a5ae8df5b3365183150f6df49e49dece80d8c upstream. Since insn.prefixes.nbytes can be bigger than the size of insn.prefixes.bytes[] when a prefix is repeated, the proper check must be insn.prefixes.bytes[i] != 0 and i < 4 instead of using insn.prefixes.nbytes. Introduce a for_each_insn_prefix() macro for this purpose. Debugged by Kees Cook <keescook(a)chromium.org>. [ bp: Massage commit message, sync with the respective header in tools/ and drop "we". ] Fixes: 2b1444983508 ("uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints") Reported-by: syzbot+9b64b619f10f19d19a7c(a)syzkaller.appspotmail.com Signed-off-by: Masami Hiramatsu <mhiramat(a)kernel.org> Signed-off-by: Borislav Petkov <bp(a)suse.de> Reviewed-by: Srikar Dronamraju <srikar(a)linux.vnet.ibm.com> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/160697103739.3146288.7437620795200799020.stgit@de… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/x86/include/asm/insn.h | 15 +++++++++++++++ arch/x86/kernel/uprobes.c | 10 ++++++---- tools/objtool/arch/x86/include/asm/insn.h | 15 +++++++++++++++ tools/perf/util/intel-pt-decoder/insn.h | 15 +++++++++++++++ 4 files changed, 51 insertions(+), 4 deletions(-) diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h index c2c01f84df75f..3e0e18d376d2c 100644 --- a/arch/x86/include/asm/insn.h +++ b/arch/x86/include/asm/insn.h @@ -208,6 +208,21 @@ static inline int insn_offset_immediate(struct insn *insn) return insn_offset_displacement(insn) + insn->displacement.nbytes; } +/** + * for_each_insn_prefix() -- Iterate prefixes in the instruction + * @insn: Pointer to struct insn. + * @idx: Index storage. + * @prefix: Prefix byte. + * + * Iterate prefix bytes of given @insn. Each prefix byte is stored in @prefix + * and the index is stored in @idx (note that this @idx is just for a cursor, + * do not change it.) + * Since prefixes.nbytes can be bigger than 4 if some prefixes + * are repeated, it cannot be used for looping over the prefixes. + */ +#define for_each_insn_prefix(insn, idx, prefix) \ + for (idx = 0; idx < ARRAY_SIZE(insn->prefixes.bytes) && (prefix = insn->prefixes.bytes[idx]) != 0; idx++) + #define POP_SS_OPCODE 0x1f #define MOV_SREG_OPCODE 0x8e diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c index 420aa7d3a2e6b..ae9e806a11def 100644 --- a/arch/x86/kernel/uprobes.c +++ b/arch/x86/kernel/uprobes.c @@ -268,12 +268,13 @@ static volatile u32 good_2byte_insns[256 / 32] = { static bool is_prefix_bad(struct insn *insn) { + insn_byte_t p; int i; - for (i = 0; i < insn->prefixes.nbytes; i++) { + for_each_insn_prefix(insn, i, p) { insn_attr_t attr; - attr = inat_get_opcode_attribute(insn->prefixes.bytes[i]); + attr = inat_get_opcode_attribute(p); switch (attr) { case INAT_MAKE_PREFIX(INAT_PFX_ES): case INAT_MAKE_PREFIX(INAT_PFX_CS): @@ -728,6 +729,7 @@ static const struct uprobe_xol_ops push_xol_ops = { static int branch_setup_xol_ops(struct arch_uprobe *auprobe, struct insn *insn) { u8 opc1 = OPCODE1(insn); + insn_byte_t p; int i; switch (opc1) { @@ -758,8 +760,8 @@ static int branch_setup_xol_ops(struct arch_uprobe *auprobe, struct insn *insn) * Intel and AMD behavior differ in 64-bit mode: Intel ignores 66 prefix. * No one uses these insns, reject any branch insns with such prefix. */ - for (i = 0; i < insn->prefixes.nbytes; i++) { - if (insn->prefixes.bytes[i] == 0x66) + for_each_insn_prefix(insn, i, p) { + if (p == 0x66) return -ENOTSUPP; } diff --git a/tools/objtool/arch/x86/include/asm/insn.h b/tools/objtool/arch/x86/include/asm/insn.h index c2c01f84df75f..3e0e18d376d2c 100644 --- a/tools/objtool/arch/x86/include/asm/insn.h +++ b/tools/objtool/arch/x86/include/asm/insn.h @@ -208,6 +208,21 @@ static inline int insn_offset_immediate(struct insn *insn) return insn_offset_displacement(insn) + insn->displacement.nbytes; } +/** + * for_each_insn_prefix() -- Iterate prefixes in the instruction + * @insn: Pointer to struct insn. + * @idx: Index storage. + * @prefix: Prefix byte. + * + * Iterate prefix bytes of given @insn. Each prefix byte is stored in @prefix + * and the index is stored in @idx (note that this @idx is just for a cursor, + * do not change it.) + * Since prefixes.nbytes can be bigger than 4 if some prefixes + * are repeated, it cannot be used for looping over the prefixes. + */ +#define for_each_insn_prefix(insn, idx, prefix) \ + for (idx = 0; idx < ARRAY_SIZE(insn->prefixes.bytes) && (prefix = insn->prefixes.bytes[idx]) != 0; idx++) + #define POP_SS_OPCODE 0x1f #define MOV_SREG_OPCODE 0x8e diff --git a/tools/perf/util/intel-pt-decoder/insn.h b/tools/perf/util/intel-pt-decoder/insn.h index 2669c9f748e4d..1a01d0a41ab8e 100644 --- a/tools/perf/util/intel-pt-decoder/insn.h +++ b/tools/perf/util/intel-pt-decoder/insn.h @@ -208,6 +208,21 @@ static inline int insn_offset_immediate(struct insn *insn) return insn_offset_displacement(insn) + insn->displacement.nbytes; } +/** + * for_each_insn_prefix() -- Iterate prefixes in the instruction + * @insn: Pointer to struct insn. + * @idx: Index storage. + * @prefix: Prefix byte. + * + * Iterate prefix bytes of given @insn. Each prefix byte is stored in @prefix + * and the index is stored in @idx (note that this @idx is just for a cursor, + * do not change it.) + * Since prefixes.nbytes can be bigger than 4 if some prefixes + * are repeated, it cannot be used for looping over the prefixes. + */ +#define for_each_insn_prefix(insn, idx, prefix) \ + for (idx = 0; idx < ARRAY_SIZE(insn->prefixes.bytes) && (prefix = insn->prefixes.bytes[idx]) != 0; idx++) + #define POP_SS_OPCODE 0x1f #define MOV_SREG_OPCODE 0x8e -- 2.25.1

1 0

[PATCH kernel-4.19] share_pool: Fix memleak of concurrent sp_free and sp_group_add_task
by Yang Yingliang 30 Jun '21

30 Jun '21

From: Tang Yizhou <tangyizhou(a)huawei.com> ascend inclusion category: bugfix bugzilla: NA CVE: NA ------------------------------------------------- We found a concurrency problem of sp_group_add_task and sp_free which lead to memory leak. After process A calls __sp_free and vfs_fallocate but before calling __sp_area_drop, process B is being added to the same group by a manager process, the *dead* spa freed by sp_free may be mapped into process B again, then do_mm_populate is called. When sp_group_add_task is finished, this spa is dropped and can't be seen in /proc/sharepool/spa_stat, but the memory of spa still reside in the group. It can only be freed when the group is dead. To fix the problem, we add a member is_dead in spa. We can access it when spg->rw_lock is held. This may sound a little strange if not realizing the life cycle of spa has a direct relation with sp group. Suggested-by: Ding Tianhong <dingtianhong(a)huawei.com> Signed-off-by: Tang Yizhou <tangyizhou(a)huawei.com> Reviewed-by: Ding Tianhong <dingtianhong(a)huwei.com> Reviewed-by: 为珑陈 <chenweilong(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/share_pool.c | 37 +++++++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 12 deletions(-) diff --git a/mm/share_pool.c b/mm/share_pool.c index 61bbbd772c847..3e4e05f20c5ce 100644 --- a/mm/share_pool.c +++ b/mm/share_pool.c @@ -233,6 +233,7 @@ struct sp_area { unsigned long region_vstart; /* belong to normal region or DVPP region */ unsigned long flags; bool is_hugepage; + bool is_dead; atomic_t use_count; /* How many vmas use this VA region */ struct rb_node rb_node; /* address sorted rbtree */ struct list_head link; /* link to the spg->head */ @@ -736,6 +737,10 @@ int sp_group_add_task(int pid, int spg_id) prev = spa; atomic_inc(&spa->use_count); + + if (spa->is_dead == true) + continue; + spin_unlock(&sp_area_lock); if (spa->type == SPA_TYPE_K2SPG && spa->kva) { @@ -970,6 +975,7 @@ static struct sp_area *sp_alloc_area(unsigned long size, unsigned long flags, spa->region_vstart = vstart; spa->flags = flags; spa->is_hugepage = (flags & SP_HUGEPAGE); + spa->is_dead = false; spa->spg = spg; atomic_set(&spa->use_count, 1); spa->type = type; @@ -1271,10 +1277,14 @@ int sp_free(unsigned long addr) goto drop_spa; } - if (!spg_valid(spa->spg)) + down_write(&spa->spg->rw_lock); + if (!spg_valid(spa->spg)) { + up_write(&spa->spg->rw_lock); goto drop_spa; - - sp_dump_stack(); + } + /* the life cycle of spa has a direct relation with sp group */ + spa->is_dead = true; + up_write(&spa->spg->rw_lock); down_read(&spa->spg->rw_lock); @@ -1303,6 +1313,7 @@ int sp_free(unsigned long addr) drop_spa: __sp_area_drop(spa); out: + sp_dump_stack(); sp_try_to_compact(); return ret; } @@ -2362,15 +2373,6 @@ static int sp_unshare_uva(unsigned long uva, unsigned long size, int pid, int sp goto out_drop_area; } - down_read(&spa->spg->rw_lock); - if (!spg_valid(spa->spg)) { - up_read(&spa->spg->rw_lock); - pr_info_ratelimited("share pool: no need to unshare uva(to group), " - "sp group of spa is dead\n"); - goto out_clr_flag; - } - up_read(&spa->spg->rw_lock); - /* alway allow kthread and dvpp channel destroy procedure */ if (current->mm && current->mm->sp_group != spa->spg) { pr_err_ratelimited("share pool: unshare uva(to group) failed, " @@ -2379,6 +2381,17 @@ static int sp_unshare_uva(unsigned long uva, unsigned long size, int pid, int sp goto out_drop_area; } + down_write(&spa->spg->rw_lock); + if (!spg_valid(spa->spg)) { + up_write(&spa->spg->rw_lock); + pr_info_ratelimited("share pool: no need to unshare uva(to group), " + "sp group of spa is dead\n"); + goto out_clr_flag; + } + /* the life cycle of spa has a direct relation with sp group */ + spa->is_dead = true; + up_write(&spa->spg->rw_lock); + down_read(&spa->spg->rw_lock); __sp_free(spa->spg, uva_aligned, size_aligned, NULL); up_read(&spa->spg->rw_lock); -- 2.25.1

1 0

[PATCH kernel-4.19 01/23] net: hns3: configure promisc mode for VF asynchronously
by Yang Yingliang 30 Jun '21

30 Jun '21

From: Jian Shen <shenjian15(a)huawei.com> driver inclusion category: bugfix bugzilla: NA CVE: NA ---------------------------- Currently, when host set VF untrusted, the driver will disable the promisc mode of VF. It may be conflicted when the VF requests the host to set promisc mode. So fix it by change promisc mode for VF asynchronously. With this change, the promisc mode of VF can be restored when the VF being trusted again. Fixes: 5c1f0ff21058 ("net: hns3: add support for setting VF trust") Signed-off-by: Jian Shen <shenjian15(a)huawei.com> Signed-off-by: Yonglong Liu <liuyonglong(a)huawei.com> Reviewed-by: li yongxin <liyongxin1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- .../hisilicon/hns3/hns3pf/hclge_main.c | 42 +++++++++++++------ .../hisilicon/hns3/hns3pf/hclge_main.h | 6 ++- .../hisilicon/hns3/hns3pf/hclge_mbx.c | 40 ++++-------------- 3 files changed, 42 insertions(+), 46 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index f3d728aa54bf3..23273f08ab50f 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -10639,8 +10639,6 @@ static int hclge_set_vf_trust(struct hnae3_handle *handle, int vf, bool enable) struct hclge_vport *vport = hclge_get_vport(handle); struct hclge_dev *hdev = vport->back; u32 new_trusted = enable ? 1 : 0; - bool en_bc_pmc; - int ret; vport = hclge_get_vf_vport(hdev, vf); if (!vport) @@ -10649,19 +10647,11 @@ static int hclge_set_vf_trust(struct hnae3_handle *handle, int vf, bool enable) if (vport->vf_info.trusted == new_trusted) return 0; - /* Disable promisc mode for VF if it is not trusted any more. */ - if (!enable && vport->vf_info.promisc_enable) { - en_bc_pmc = hdev->pdev->revision != 0x20; - ret = hclge_set_vport_promisc_mode(vport, false, false, - en_bc_pmc); - if (ret) - return ret; - vport->vf_info.promisc_enable = 0; - hclge_inform_vf_promisc_info(vport); - } - vport->vf_info.trusted = new_trusted; + set_bit(HCLGE_VPORT_STATE_PROMISC_CHANGE, &vport->state); + hclge_task_schedule(hdev, 0); + return 0; } @@ -11535,6 +11525,7 @@ static void hclge_sync_promisc_mode(struct hclge_dev *hdev) u8 tmp_flags = 0; bool vlan_en; int ret; + int i; if (vport->last_promisc_flags != vport->overflow_promisc_flags) { set_bit(HCLGE_STATE_PROMISC_CHANGED, &hdev->state); @@ -11555,6 +11546,31 @@ static void hclge_sync_promisc_mode(struct hclge_dev *hdev) hclge_enable_vlan_filter(handle, vlan_en); } } + + for (i = 1; i < hdev->num_alloc_vport; i++) { + bool uc_en = false; + bool mc_en = false; + bool bc_en; + + vport = &hdev->vport[i]; + + if (!test_and_clear_bit(HCLGE_VPORT_STATE_PROMISC_CHANGE, + &vport->state)) + continue; + + if (vport->vf_info.trusted) { + uc_en = vport->vf_info.request_uc_en > 0; + mc_en = vport->vf_info.request_mc_en > 0; + } + bc_en = vport->vf_info.request_bc_en > 0; + + ret = hclge_set_vport_promisc_mode(vport, uc_en, mc_en, bc_en); + if (ret) { + set_bit(HCLGE_VPORT_STATE_PROMISC_CHANGE, + &vport->state); + return; + } + } } static bool hclge_module_existed(struct hclge_dev *hdev) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index 8e7dff25cbfd5..4a664801fbe92 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -904,6 +904,7 @@ struct hclge_rss_tuple_cfg { enum HCLGE_VPORT_STATE { HCLGE_VPORT_STATE_ALIVE, HCLGE_VPORT_STATE_MAC_TBL_CHANGE, + HCLGE_VPORT_STATE_PROMISC_CHANGE, HCLGE_VPORT_STATE_MAX }; @@ -926,7 +927,9 @@ struct hclge_vf_info { u32 spoofchk; u32 max_tx_rate; u32 trusted; - u16 promisc_enable; + u8 request_uc_en; + u8 request_mc_en; + u8 request_bc_en; }; struct hclge_vport { @@ -1051,7 +1054,6 @@ int hclge_query_bd_num_cmd_send(struct hclge_dev *hdev, struct hclge_desc *desc); void hclge_report_hw_error(struct hclge_dev *hdev, enum hnae3_hw_error_type type); -void hclge_inform_vf_promisc_info(struct hclge_vport *vport); void hclge_dbg_dump_rst_info(struct hclge_dev *hdev); bool hclge_vf_vlan_need_enable(struct hclge_vport *vport); int hclge_push_vf_link_status(struct hclge_vport *vport); diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index e998322d59aae..d2bfa5f7f22f1 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -321,35 +321,17 @@ static int hclge_get_vf_ring_vector_map(struct hclge_vport *vport, return ret; } -static int hclge_set_vf_promisc_mode(struct hclge_vport *vport, - struct hclge_mbx_vf_to_pf_cmd *req) +static void hclge_set_vf_promisc_mode(struct hclge_vport *vport, + struct hclge_mbx_vf_to_pf_cmd *req) { - bool en_bc = req->msg.en_bc ? true : false; - bool en_uc = req->msg.en_uc ? true : false; - bool en_mc = req->msg.en_mc ? true : false; - int ret; - - if (!vport->vf_info.trusted) { - en_uc = false; - en_mc = false; - } - - ret = hclge_set_vport_promisc_mode(vport, en_uc, en_mc, en_bc); - - vport->vf_info.promisc_enable = (en_uc || en_mc) ? 1 : 0; - - return ret; -} - -void hclge_inform_vf_promisc_info(struct hclge_vport *vport) -{ - u8 dest_vfid = (u8)vport->vport_id; - u8 msg_data[2]; + struct hclge_dev *hdev = vport->back; - memcpy(&msg_data[0], &vport->vf_info.promisc_enable, sizeof(u16)); + vport->vf_info.request_uc_en = req->msg.en_uc; + vport->vf_info.request_mc_en = req->msg.en_mc; + vport->vf_info.request_bc_en = req->msg.en_bc; - hclge_send_mbx_msg(vport, msg_data, sizeof(msg_data), - HCLGE_MBX_PUSH_PROMISC_INFO, dest_vfid); + set_bit(HCLGE_VPORT_STATE_PROMISC_CHANGE, &vport->state); + hclge_task_schedule(hdev, 0); } static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport, @@ -837,11 +819,7 @@ void hclge_mbx_handler(struct hclge_dev *hdev) ret); break; case HCLGE_MBX_SET_PROMISC_MODE: - ret = hclge_set_vf_promisc_mode(vport, req); - if (ret) - dev_err(&hdev->pdev->dev, - "PF fail(%d) to set VF promisc mode\n", - ret); + hclge_set_vf_promisc_mode(vport, req); break; case HCLGE_MBX_SET_UNICAST: ret = hclge_set_vf_uc_mac_addr(vport, req); -- 2.25.1

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[PATCH kernel-4.19 1/2] kabi: update kabi list for arm64
by Yang Yingliang 30 Jun '21

30 Jun '21

hulk inclusion category: other bugzilla: NA CVE: NA --------------------------- It's from https://gitee.com/src-openeuler/kernel/blob/openEuler-20.03-LTS-SP2/kabi_wh… Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kabi/2019-V1/kabi-list.arm64 | 718 ++++++++++++++++++++++++++++++++++- 1 file changed, 713 insertions(+), 5 deletions(-) diff --git a/kabi/2019-V1/kabi-list.arm64 b/kabi/2019-V1/kabi-list.arm64 index af8f6a3085356..e9617085311e4 100644 --- a/kabi/2019-V1/kabi-list.arm64 +++ b/kabi/2019-V1/kabi-list.arm64 @@ -1,13 +1,32 @@ # kabi compatibility list for arm64 +acpi_bus_get_device +acpi_check_dsm acpi_dev_found +acpi_disabled +acpi_dma_configure acpi_evaluate_dsm acpi_evaluate_object +acpi_format_exception +acpi_gbl_FADT +acpi_get_devices +acpi_get_handle +acpi_get_name +acpi_get_table +acpi_gsi_to_irq +acpi_handle_printk +acpi_has_method +acpi_lid_open acpi_match_device __acpi_node_get_property_reference +acpi_os_map_memory acpi_os_unmap_generic_address +acpi_os_unmap_memory +acpi_register_gsi +acpi_unregister_gsi add_timer add_wait_queue add_wait_queue_exclusive +admin_timeout alloc_chrdev_region alloc_cpu_rmap __alloc_disk_node @@ -23,51 +42,73 @@ anon_inode_getfd apei_hest_parse apei_map_generic_address apei_read +__arch_clear_user __arch_copy_from_user +__arch_copy_in_user __arch_copy_to_user +arch_timer_read_counter +arch_wb_cache_pmem arm64_const_caps_ready arp_tbl async_schedule ata_link_next ata_tf_to_fis _atomic_dec_and_lock +atomic_notifier_call_chain atomic_notifier_chain_register atomic_notifier_chain_unregister attribute_container_find_class_device autoremove_wake_function +backlight_device_register +backlight_device_unregister +backlight_force_update bdevname +bdev_read_only bdget_disk +_bin2bcd bin2hex bio_add_page bio_alloc_bioset bio_chain +bio_clone_fast bio_devname bio_endio +bio_free_pages bio_init bio_integrity_add_page bio_integrity_alloc bio_put +bioset_exit +bioset_init __bitmap_and __bitmap_andnot __bitmap_clear +__bitmap_complement __bitmap_equal bitmap_find_free_region bitmap_find_next_zero_area_off bitmap_free __bitmap_intersects +__bitmap_or __bitmap_parse +bitmap_parselist bitmap_print_to_pagebuf bitmap_release_region __bitmap_set __bitmap_weight +__bitmap_xor bitmap_zalloc bit_wait blk_alloc_queue +blk_check_plugged blk_cleanup_queue blkdev_get_by_path __blkdev_issue_discard +blkdev_issue_discard blkdev_issue_flush +blkdev_issue_write_same __blkdev_issue_zeroout +blkdev_issue_zeroout blkdev_put blk_execute_rq blk_execute_rq_nowait @@ -93,6 +134,7 @@ blk_mq_pci_map_queues blk_mq_quiesce_queue blk_mq_rdma_map_queues blk_mq_requeue_request +blk_mq_run_hw_queues blk_mq_start_request blk_mq_tagset_busy_iter blk_mq_tag_to_rq @@ -102,8 +144,10 @@ blk_mq_unquiesce_queue blk_mq_update_nr_hw_queues blk_poll blk_put_queue +blk_put_request blk_queue_bounce_limit blk_queue_chunk_sectors +blk_queue_dma_alignment blk_queue_flag_clear blk_queue_flag_set blk_queue_flag_test_and_set @@ -116,21 +160,29 @@ blk_queue_max_discard_segments blk_queue_max_hw_sectors blk_queue_max_segments blk_queue_max_segment_size +blk_queue_max_write_same_sectors blk_queue_max_write_zeroes_sectors blk_queue_physical_block_size +blk_queue_rq_timeout blk_queue_segment_boundary +blk_queue_split +blk_queue_stack_limits blk_queue_update_dma_alignment blk_queue_virt_boundary blk_queue_write_cache +blk_rq_append_bio blk_rq_count_integrity_sg blk_rq_map_integrity_sg blk_rq_map_kern blk_rq_map_sg blk_rq_map_user +blk_rq_map_user_iov blk_rq_unmap_user blk_set_queue_dying +blk_set_stacking_limits blk_start_plug blk_status_to_errno +blk_verify_command blocking_notifier_call_chain blocking_notifier_chain_register blocking_notifier_chain_unregister @@ -140,6 +192,7 @@ bpf_prog_put bpf_prog_sub bpf_trace_run1 bpf_trace_run2 +bpf_trace_run3 bpf_trace_run5 bpf_warn_invalid_xdp_action bsg_job_done @@ -155,8 +208,10 @@ btree_remove btree_update build_skb bus_find_device +cache_line_size call_netdevice_notifiers call_rcu_sched +call_srcu call_usermodehelper cancel_delayed_work cancel_delayed_work_sync @@ -168,6 +223,8 @@ cdev_device_add cdev_device_del cdev_init cgroup_attach_task_all +__chash_table_copy_in +__chash_table_copy_out __check_object_size __class_create class_destroy @@ -184,13 +241,20 @@ clk_unprepare clk_unregister __close_fd commit_creds +compat_alloc_user_space complete +complete_all complete_and_exit +completion_done +component_add +component_del _cond_resched configfs_register_subsystem configfs_unregister_subsystem config_group_init config_group_init_type_name +console_lock +console_unlock __const_udelay consume_skb _copy_from_iter @@ -217,11 +281,15 @@ cpus_read_unlock crc32c __crc32c_le_shift crc32_le +crc8 +crc8_populate_msb +crc_t10dif crypto_ahash_digest crypto_ahash_final crypto_ahash_setkey crypto_alloc_ahash crypto_alloc_akcipher +crypto_alloc_shash crypto_destroy_tfm crypto_inc __crypto_memneq @@ -230,6 +298,8 @@ crypto_register_alg crypto_register_kpp crypto_register_shash crypto_register_skciphers +crypto_shash_final +crypto_shash_update crypto_unregister_akcipher crypto_unregister_alg crypto_unregister_kpp @@ -243,16 +313,23 @@ dcb_getapp dcb_ieee_delapp dcb_ieee_getapp_mask dcb_ieee_setapp +dcbnl_cee_notify dcb_setapp +debugfs_create_atomic_t debugfs_create_dir debugfs_create_file debugfs_create_regset32 +debugfs_create_symlink +debugfs_create_u16 +debugfs_create_u32 debugfs_create_u64 debugfs_create_u8 debugfs_initialized +debugfs_lookup debugfs_remove -debugfs_remove_recursive +default_llseek default_wake_function +__delay delayed_work_timer_fn del_gendisk del_timer @@ -263,6 +340,7 @@ dev_addr_add dev_addr_del dev_alloc_name dev_attr_phy_event_threshold +dev_base_lock dev_change_flags dev_close dev_disable_lro @@ -275,6 +353,7 @@ dev_get_by_index_rcu __dev_get_by_name dev_get_by_name dev_get_flags +dev_get_iflink dev_get_stats device_add device_add_disk @@ -287,6 +366,7 @@ device_for_each_child device_get_mac_address device_get_next_child_node device_initialize +device_link_add device_property_present device_property_read_string device_property_read_string_array @@ -297,6 +377,7 @@ device_release_driver device_remove_file device_remove_file_self device_reprobe +device_set_wakeup_capable device_set_wakeup_enable device_unregister _dev_info @@ -309,9 +390,11 @@ devlink_param_driverinit_value_set devlink_params_register devlink_params_unregister devlink_param_value_changed +devlink_port_attrs_set devlink_port_register devlink_port_type_clear devlink_port_type_eth_set +devlink_port_type_ib_set devlink_port_unregister devlink_region_create devlink_region_destroy @@ -319,6 +402,9 @@ devlink_region_shapshot_id_get devlink_region_snapshot_create devlink_register devlink_unregister +dev_mc_add +dev_mc_add_excl +dev_mc_del devm_clk_get devm_free_irq devm_hwmon_device_register_with_groups @@ -328,6 +414,7 @@ devm_ioremap_resource devm_iounmap devm_kfree devm_kmalloc +devm_kmemdup devm_mdiobus_alloc_size devm_request_threaded_irq _dev_notice @@ -339,128 +426,370 @@ dev_printk dev_queue_xmit dev_remove_pack dev_set_mac_address +dev_set_mtu dev_set_name dev_set_promiscuity dev_trans_start dev_uc_add +dev_uc_add_excl +dev_uc_del _dev_warn d_find_alias disable_irq disable_irq_nosync dma_alloc_from_dev_coherent +dma_common_get_sgtable dma_common_mmap +dma_fence_add_callback +dma_fence_array_create +dma_fence_context_alloc +dma_fence_free +dma_fence_get_status +dma_fence_init +dma_fence_release +dma_fence_signal +dma_fence_signal_locked +dma_fence_wait_any_timeout +dma_fence_wait_timeout dma_get_required_mask dmam_alloc_coherent +dmam_free_coherent dmam_pool_create dma_pool_alloc dma_pool_create dma_pool_destroy dma_pool_free dma_release_from_dev_coherent +dmi_check_system +dmi_get_system_info dmi_match -do_gettimeofday __do_once_done __do_once_start +do_wait_intr down downgrade_write down_interruptible down_read down_read_trylock +down_timeout down_trylock down_write +down_write_killable down_write_trylock d_path dput dql_completed dql_reset +drain_workqueue +driver_create_file +driver_for_each_device driver_register +driver_remove_file driver_unregister +drm_add_edid_modes drm_add_modes_noedid +drm_atomic_add_affected_connectors +drm_atomic_add_affected_planes +drm_atomic_commit +drm_atomic_get_connector_state drm_atomic_get_crtc_state +drm_atomic_get_plane_state drm_atomic_helper_check +drm_atomic_helper_check_modeset +drm_atomic_helper_check_planes +drm_atomic_helper_check_plane_state +drm_atomic_helper_cleanup_planes drm_atomic_helper_commit +drm_atomic_helper_commit_cleanup_done +drm_atomic_helper_commit_hw_done +__drm_atomic_helper_connector_destroy_state drm_atomic_helper_connector_destroy_state +__drm_atomic_helper_connector_duplicate_state drm_atomic_helper_connector_duplicate_state +__drm_atomic_helper_connector_reset drm_atomic_helper_connector_reset +__drm_atomic_helper_crtc_destroy_state drm_atomic_helper_crtc_destroy_state +__drm_atomic_helper_crtc_duplicate_state drm_atomic_helper_crtc_duplicate_state drm_atomic_helper_crtc_reset drm_atomic_helper_disable_plane +drm_atomic_helper_legacy_gamma_set drm_atomic_helper_page_flip +__drm_atomic_helper_plane_destroy_state drm_atomic_helper_plane_destroy_state +__drm_atomic_helper_plane_duplicate_state drm_atomic_helper_plane_duplicate_state drm_atomic_helper_plane_reset +drm_atomic_helper_prepare_planes drm_atomic_helper_resume drm_atomic_helper_set_config +drm_atomic_helper_setup_commit drm_atomic_helper_shutdown drm_atomic_helper_suspend +drm_atomic_helper_swap_state +drm_atomic_helper_update_legacy_modeset_state drm_atomic_helper_update_plane +drm_atomic_helper_wait_for_dependencies +drm_atomic_helper_wait_for_fences +drm_atomic_helper_wait_for_flip_done +drm_atomic_state_alloc +drm_atomic_state_default_clear +drm_atomic_state_default_release +__drm_atomic_state_free +drm_atomic_state_init +drm_calc_vbltimestamp_from_scanoutpos +drm_color_lut_extract drm_compat_ioctl drm_connector_attach_encoder drm_connector_cleanup drm_connector_init +drm_connector_list_iter_begin +drm_connector_list_iter_end +drm_connector_list_iter_next +drm_connector_register +drm_connector_set_path_property +drm_connector_unregister +drm_connector_update_edid_property +drm_crtc_accurate_vblank_count +drm_crtc_add_crc_entry +drm_crtc_arm_vblank_event drm_crtc_cleanup +__drm_crtc_commit_free +drm_crtc_enable_color_mgmt +drm_crtc_force_disable_all +drm_crtc_from_index +drm_crtc_handle_vblank +drm_crtc_helper_set_config +drm_crtc_helper_set_mode +drm_crtc_init drm_crtc_init_with_planes drm_crtc_send_vblank_event +drm_crtc_vblank_count +drm_crtc_vblank_get drm_crtc_vblank_off drm_crtc_vblank_on +drm_crtc_vblank_put +drm_cvt_mode drm_dbg +drm_debugfs_create_files +drm_detect_hdmi_monitor +drm_detect_monitor_audio drm_dev_alloc +drm_dev_put drm_dev_register drm_dev_unref drm_dev_unregister +drm_dp_atomic_find_vcpi_slots +drm_dp_atomic_release_vcpi_slots +drm_dp_aux_register +drm_dp_aux_unregister +drm_dp_bw_code_to_link_rate +drm_dp_calc_pbn_mode +drm_dp_channel_eq_ok +drm_dp_check_act_status +drm_dp_clock_recovery_ok +drm_dp_dpcd_read +drm_dp_dpcd_read_link_status +drm_dp_dpcd_write +drm_dp_find_vcpi_slots +drm_dp_get_adjust_request_pre_emphasis +drm_dp_get_adjust_request_voltage +drm_dp_link_rate_to_bw_code +drm_dp_link_train_channel_eq_delay +drm_dp_link_train_clock_recovery_delay +drm_dp_mst_allocate_vcpi +drm_dp_mst_deallocate_vcpi +drm_dp_mst_detect_port +drm_dp_mst_get_edid +drm_dp_mst_hpd_irq +drm_dp_mst_reset_vcpi_slots +drm_dp_mst_topology_mgr_destroy +drm_dp_mst_topology_mgr_init +drm_dp_mst_topology_mgr_resume +drm_dp_mst_topology_mgr_set_mst +drm_dp_mst_topology_mgr_suspend +drm_dp_update_payload_part1 +drm_dp_update_payload_part2 +drm_edid_header_is_valid +drm_edid_is_valid +drm_edid_to_sad +drm_edid_to_speaker_allocation drm_encoder_cleanup drm_encoder_init drm_err +drm_fb_helper_add_one_connector drm_fb_helper_alloc_fbi drm_fb_helper_blank +drm_fb_helper_cfb_copyarea +drm_fb_helper_cfb_fillrect +drm_fb_helper_cfb_imageblit drm_fb_helper_check_var +drm_fb_helper_debug_enter +drm_fb_helper_debug_leave drm_fb_helper_fill_fix drm_fb_helper_fill_var drm_fb_helper_fini +drm_fb_helper_hotplug_event drm_fb_helper_init drm_fb_helper_initial_config +drm_fb_helper_ioctl +drm_fb_helper_lastclose +drm_fb_helper_output_poll_changed drm_fb_helper_pan_display drm_fb_helper_prepare +drm_fb_helper_remove_one_connector drm_fb_helper_setcmap drm_fb_helper_set_par +drm_fb_helper_set_suspend +drm_fb_helper_set_suspend_unlocked drm_fb_helper_single_add_all_connectors drm_fb_helper_sys_copyarea drm_fb_helper_sys_fillrect drm_fb_helper_sys_imageblit drm_fb_helper_unregister_fbi +drm_format_plane_cpp drm_framebuffer_cleanup drm_framebuffer_init +drm_framebuffer_unregister_private +drm_gem_dmabuf_kmap +drm_gem_dmabuf_kunmap +drm_gem_dmabuf_mmap +drm_gem_dmabuf_release +drm_gem_dmabuf_vmap +drm_gem_dmabuf_vunmap +drm_gem_fb_create_handle +drm_gem_fb_destroy drm_gem_handle_create +drm_gem_handle_delete +drm_gem_map_attach +drm_gem_map_detach +drm_gem_map_dma_buf drm_gem_object_init drm_gem_object_lookup drm_gem_object_put_unlocked drm_gem_object_release +drm_gem_prime_export +drm_gem_prime_fd_to_handle +drm_gem_prime_handle_to_fd +drm_gem_prime_import +drm_gem_private_object_init +drm_gem_unmap_dma_buf +drm_get_edid +drm_get_edid_switcheroo +drm_get_format_name +drm_get_max_iomem drm_global_item_ref drm_global_item_unref drm_handle_vblank +drm_hdmi_avi_infoframe_from_display_mode +drm_hdmi_vendor_infoframe_from_display_mode +drm_helper_connector_dpms +drm_helper_disable_unused_functions +drm_helper_hpd_irq_event drm_helper_mode_fill_fb_struct drm_helper_probe_single_connector_modes +drm_helper_resume_force_mode +drm_i2c_encoder_detect +drm_i2c_encoder_init +drm_i2c_encoder_mode_fixup +drm_i2c_encoder_restore +drm_i2c_encoder_save +drm_invalid_op drm_ioctl drm_irq_install drm_irq_uninstall +drm_is_current_master +drm_kms_helper_hotplug_event +drm_kms_helper_is_poll_worker drm_kms_helper_poll_disable drm_kms_helper_poll_enable +drm_kms_helper_poll_fini +drm_kms_helper_poll_init +drm_match_cea_mode +drm_mm_init +drm_mm_insert_node_in_range +drm_mm_print +drm_mm_remove_node +drm_mm_takedown drm_mode_config_cleanup drm_mode_config_init drm_mode_config_reset +drm_mode_copy +drm_mode_create_dvi_i_properties +drm_mode_create_scaling_mode_property +drm_mode_create_tv_properties drm_mode_crtc_set_gamma_size +drm_mode_debug_printmodeline +drm_mode_destroy +drm_mode_duplicate +drm_mode_equal +drm_mode_get_hv_timing +drm_mode_is_420_only drm_mode_legacy_fb_format drm_mode_object_find drm_mode_object_put +drm_mode_probed_add +drm_mode_set_crtcinfo +drm_modeset_lock +drm_modeset_lock_all +drm_modeset_lock_all_ctx +drm_mode_set_name +drm_modeset_unlock +drm_modeset_unlock_all +drm_mode_vrefresh +drm_object_attach_property +drm_object_property_set_value drm_open drm_plane_cleanup +drm_plane_create_alpha_property +drm_plane_create_color_properties +drm_plane_create_zpos_immutable_property +drm_plane_create_zpos_property +drm_plane_force_disable +drm_plane_init drm_poll +drm_primary_helper_destroy +drm_primary_helper_funcs +drm_prime_gem_destroy +drm_prime_pages_to_sg +drm_prime_sg_to_page_addr_arrays +drm_printf +__drm_printfn_seq_file +drm_property_add_enum +drm_property_create +drm_property_create_enum +drm_property_create_range +__drm_puts_seq_file drm_read drm_release +drm_scdc_read +drm_scdc_write +drm_sched_dependency_optimized +drm_sched_entity_destroy +drm_sched_entity_fini +drm_sched_entity_flush +drm_sched_entity_init +drm_sched_entity_push_job +drm_sched_entity_set_rq +drm_sched_fini +drm_sched_hw_job_reset +drm_sched_init +drm_sched_job_init +drm_sched_job_recovery +drm_send_event_locked +drm_syncobj_create +drm_syncobj_find +drm_syncobj_find_fence +drm_syncobj_free +drm_syncobj_get_fd +drm_syncobj_get_handle +drm_syncobj_replace_fence drm_universal_plane_init drm_vblank_init +drm_vma_node_allow drm_vma_node_is_allowed +drm_vma_node_revoke dst_init dst_release dummy_dma_ops @@ -469,17 +798,21 @@ __dynamic_dev_dbg __dynamic_netdev_dbg __dynamic_pr_debug elfcorehdr_addr +emergency_restart enable_irq +errno_to_blk_status ether_setup eth_get_headlen eth_mac_addr eth_platform_get_mac_address ethtool_convert_legacy_u32_to_link_mode ethtool_convert_link_mode_to_legacy_u32 +ethtool_intersect_link_masks ethtool_op_get_link ethtool_op_get_ts_info eth_type_trans eth_validate_addr +eventfd_ctx_fdget eventfd_ctx_fileget eventfd_ctx_put eventfd_fget @@ -491,6 +824,7 @@ fc_block_scsi_eh fc_eh_timed_out fc_get_event_number fc_host_post_event +fc_host_post_vendor_event fc_release_transport fc_remote_port_add fc_remote_port_delete @@ -503,12 +837,15 @@ fget filemap_fault filp_close filp_open +find_get_pid find_last_bit find_next_bit find_next_zero_bit find_pid_ns find_vma finish_wait +firmware_request_nowarn +fixed_size_llseek flex_array_alloc flex_array_free flex_array_get @@ -522,6 +859,7 @@ flush_workqueue force_sig fortify_panic fput +free_fib_info free_irq free_irq_cpu_rmap free_netdev @@ -537,30 +875,49 @@ __f_setown fwnode_property_read_string fwnode_property_read_u32_array fwnode_property_read_u8_array +gcd +generate_random_uuid +generic_end_io_acct generic_file_llseek +generic_handle_irq +generic_make_request +generic_start_io_acct genlmsg_put genl_notify genl_register_family genl_unregister_family genphy_read_status genphy_restart_aneg +gen_pool_add_virt +gen_pool_alloc +gen_pool_create +gen_pool_destroy +gen_pool_free +gen_pool_virt_to_phys get_cpu_idle_time_us get_cpu_iowait_time_us get_device __get_free_pages +get_gendisk get_phy_device +get_pid_task get_random_bytes -get_seconds +__get_task_comm get_task_mm +get_unused_fd_flags get_user_pages get_user_pages_fast get_user_pages_remote get_zeroed_page +gic_pmr_sync gre_add_protocol gre_del_protocol groups_alloc groups_free guid_parse +handle_simple_irq +hdmi_avi_infoframe_pack +hdmi_infoframe_pack hest_disable hex_to_bin hrtimer_cancel @@ -570,50 +927,104 @@ hrtimer_start_range_ns hrtimer_try_to_cancel __hw_addr_sync_dev __hw_addr_unsync_dev +hwmon_device_register +hwmon_device_register_with_groups +hwmon_device_register_with_info +hwmon_device_unregister +i2c_add_adapter i2c_add_numbered_adapter +i2c_bit_add_bus +i2c_bit_algo i2c_del_adapter i2c_generic_scl_recovery +i2c_new_device i2c_recover_bus +i2c_smbus_read_byte_data +i2c_smbus_write_byte_data +i2c_transfer +i2c_unregister_device __ib_alloc_cq ib_alloc_device +ib_alloc_odp_umem __ib_alloc_pd +__ib_alloc_xrcd __ib_create_cq +ib_create_qp +ib_create_send_mad ib_create_srq ib_dealloc_device ib_dealloc_pd +ib_dereg_mr ib_destroy_cq ib_destroy_qp ib_destroy_srq ib_dispatch_event ib_drain_qp ib_event_msg +ib_find_cached_pkey ib_free_cq +ib_free_send_mad +ib_get_cached_pkey +ib_get_eth_speed +ib_get_gids_from_rdma_hdr +ib_get_rdma_header_version ib_map_mr_sg +ib_modify_qp ib_modify_qp_is_ok ib_mr_pool_destroy ib_mr_pool_get ib_mr_pool_init ib_mr_pool_put +ib_post_send_mad +ib_process_cq_direct +ib_query_pkey ib_query_port +ib_query_qp ib_register_client ib_register_device +ib_register_mad_agent +ib_sa_cancel_query +ib_sa_guid_info_rec_query +ib_sa_register_client +ib_sa_unregister_client ib_sg_to_pages +ib_ud_header_init +ib_ud_header_pack +ib_ud_ip4_csum +ib_umem_copy_from ib_umem_get +ib_umem_odp_map_dma_pages +ib_umem_odp_unmap_dma_pages ib_umem_page_count ib_umem_release ib_unregister_client ib_unregister_device +ib_unregister_mad_agent +ib_uverbs_get_ucontext ib_wc_status_msg ida_alloc_range ida_destroy ida_free +idr_alloc +idr_alloc_cyclic +idr_alloc_u32 +idr_destroy +idr_find +idr_for_each +idr_get_next +idr_get_next_ul +idr_preload +idr_remove +idr_replace in4_pton in6_pton in_aton in_dev_finish_destroy in_egroup_p +__inet6_lookup_established inet_addr_is_any inet_get_local_port_range +__inet_lookup_established inet_proto_csum_replace16 inet_proto_csum_replace4 inet_pton_with_scope @@ -632,6 +1043,10 @@ input_register_handle input_register_handler input_unregister_handle input_unregister_handler +interval_tree_insert +interval_tree_iter_first +interval_tree_iter_next +interval_tree_remove int_to_scsilun invalidate_partition iomem_resource @@ -639,6 +1054,9 @@ iommu_get_domain_for_dev iommu_group_get iommu_group_id iommu_group_put +iommu_iova_to_phys +iommu_map +iommu_unmap __ioremap ioremap_cache io_schedule @@ -648,15 +1066,20 @@ iov_iter_advance iov_iter_bvec iov_iter_init iov_iter_npages +__iowrite32_copy __iowrite64_copy ip6_dst_hoplimit ip6_local_out +ip6_route_output_flags +ip_compute_csum ip_defrag +__ip_dev_find ip_do_fragment ip_local_out ipmi_create_user ipmi_destroy_user -ipmi_register_smi +ipmi_free_recv_msg +ipmi_poll_interface ipmi_request_settime ipmi_set_gets_events ipmi_set_my_address @@ -668,17 +1091,30 @@ __ip_select_ident ip_send_check ip_set_get_byname ip_set_put_byindex +ip_tos2prio ip_tunnel_get_stats64 iput __ipv6_addr_type +ipv6_chk_addr ipv6_ext_hdr ipv6_find_hdr ipv6_skip_exthdr ipv6_stub ip_vs_proto_name irq_cpu_rmap_add +irq_create_mapping +__irq_domain_add +irq_domain_remove +irq_find_mapping +irq_get_irq_data +irq_poll_complete +irq_poll_disable +irq_poll_enable +irq_poll_init +irq_poll_sched irq_set_affinity_hint irq_set_affinity_notifier +irq_set_chip_and_handler_name irq_to_desc is_acpi_data_node is_acpi_device_node @@ -743,6 +1179,8 @@ kasprintf kernel_bind kernel_connect kernel_cpustat +kernel_recvmsg +kernel_sendmsg kernel_setsockopt kernel_sock_shutdown kernel_write @@ -754,6 +1192,8 @@ kfree_const kfree_skb kfree_skb_list kfree_skb_partial +kgdb_active +kgdb_breakpoint kill_fasync kimage_voffset __kmalloc @@ -773,10 +1213,12 @@ kmemdup kobject_add kobject_create_and_add kobject_del +kobject_get kobject_init kobject_init_and_add kobject_put kobject_set_name +kobject_uevent kobject_uevent_env krealloc kset_create_and_add @@ -785,6 +1227,7 @@ kset_register kset_unregister ksize kstrdup +kstrdup_const kstrndup kstrtobool kstrtobool_from_user @@ -800,10 +1243,13 @@ kstrtoull kstrtoull_from_user kthread_bind kthread_create_on_node +kthread_park kthread_should_stop kthread_stop +kthread_unpark ktime_get ktime_get_coarse_real_ts64 +ktime_get_raw ktime_get_raw_ts64 ktime_get_real_seconds ktime_get_real_ts64 @@ -815,15 +1261,22 @@ kvfree kvmalloc_node kzfree lcm +led_classdev_resume +led_classdev_suspend +led_classdev_unregister __list_add_valid __list_del_entry_valid list_sort +llist_add_batch __ll_sc_atomic64_add +__ll_sc_atomic64_add_return __ll_sc_atomic64_andnot +__ll_sc_atomic64_fetch_add __ll_sc_atomic64_fetch_andnot __ll_sc_atomic64_fetch_andnot_release __ll_sc_atomic64_fetch_or __ll_sc_atomic64_fetch_or_acquire +__ll_sc_atomic64_fetch_xor __ll_sc_atomic64_or __ll_sc_atomic64_sub __ll_sc_atomic64_sub_return @@ -839,6 +1292,7 @@ __ll_sc___cmpxchg_case_mb_8 __local_bh_enable_ip __lock_page lock_page_memcg +lockref_get lock_sock_nested logic_inw logic_outw @@ -849,6 +1303,7 @@ mark_page_accessed match_hex match_int match_strdup +match_string match_token match_u64 _mcount @@ -857,9 +1312,13 @@ mdev_from_dev mdev_get_drvdata mdev_parent_dev mdev_register_device +mdev_register_driver mdev_set_drvdata mdev_unregister_device +mdev_unregister_driver mdio45_probe +mdiobus_alloc_size +mdiobus_free mdiobus_get_phy mdiobus_read __mdiobus_register @@ -889,15 +1348,17 @@ mempool_kmalloc memscan mem_section memset +__memset_io memstart_addr memzero_explicit +metadata_dst_alloc misc_deregister misc_register -mlxfw_firmware_flash mmput __mmu_notifier_register mmu_notifier_register mmu_notifier_unregister +mmu_notifier_unregister_no_release mod_delayed_work_on mod_timer mod_timer_pending @@ -932,15 +1393,21 @@ __ndelay ndo_dflt_bridge_getlink ndo_dflt_fdb_add __neigh_create +neigh_destroy +__neigh_event_send +neigh_lookup +netdev_alloc_frag __netdev_alloc_skb netdev_bind_sb_channel_queue netdev_crit netdev_err netdev_features_change netdev_info +netdev_lower_get_next netdev_master_upper_dev_get netdev_master_upper_dev_get_rcu netdev_master_upper_dev_link +netdev_notice netdev_printk netdev_reset_tc netdev_rss_key_fill @@ -959,6 +1426,7 @@ netif_carrier_off netif_carrier_on netif_device_attach netif_device_detach +netif_get_num_default_rss_queues netif_napi_add netif_napi_del netif_receive_skb @@ -970,6 +1438,7 @@ netif_set_real_num_tx_queues netif_set_xps_queue netif_tx_stop_all_queues netif_tx_wake_queue +netlink_ack netlink_broadcast __netlink_dump_start netlink_has_listeners @@ -1066,12 +1535,53 @@ nr_irqs nr_node_ids ns_capable nsecs_to_jiffies +ns_to_timespec ns_to_timespec64 ns_to_timeval numa_node +nvme_alloc_request +nvme_cancel_request +nvme_change_ctrl_state +nvme_cleanup_cmd +nvme_complete_async_event +nvme_complete_rq +nvme_disable_ctrl +nvme_enable_ctrl +nvme_fc_register_localport +nvme_fc_register_remoteport +nvme_fc_set_remoteport_devloss +nvme_fc_unregister_localport +nvme_fc_unregister_remoteport +nvme_init_ctrl +nvme_init_identify +nvme_io_timeout +nvme_kill_queues +nvme_remove_namespaces +nvme_reset_ctrl +nvme_reset_ctrl_sync +nvme_set_queue_count +nvme_setup_cmd +nvme_shutdown_ctrl +nvme_start_ctrl +nvme_start_freeze +nvme_start_queues +nvme_stop_ctrl +nvme_stop_queues +nvme_submit_sync_cmd +nvmet_fc_rcv_fcp_abort +nvmet_fc_rcv_fcp_req +nvmet_fc_rcv_ls_req +nvmet_fc_register_targetport +nvmet_fc_unregister_targetport +nvme_unfreeze +nvme_uninit_ctrl +nvme_wait_freeze +nvme_wait_freeze_timeout +nvme_wq of_device_is_compatible of_find_device_by_node of_fwnode_ops +of_led_classdev_register of_match_node of_mdiobus_register of_node_put @@ -1079,6 +1589,7 @@ of_parse_phandle of_parse_phandle_with_fixed_args of_phy_find_device on_each_cpu +orderly_poweroff out_of_line_wait_on_bit override_creds __page_file_index @@ -1113,14 +1624,23 @@ param_set_int path_get path_put pci_alloc_irq_vectors_affinity +pci_assign_unassigned_bus_resources pcibios_resource_to_bus +pci_bus_read_config_dword +pci_bus_resource_n pci_bus_type +pci_cfg_access_lock +pci_cfg_access_unlock +pci_check_and_mask_intx pci_choose_state pci_cleanup_aer_uncorrect_error_status pci_clear_master pci_clear_mwi +pci_d3cold_disable +pci_dev_driver pci_dev_get pci_device_is_present +pci_dev_present pci_dev_put pci_disable_device pci_disable_link_state @@ -1130,43 +1650,64 @@ pci_disable_pcie_error_reporting pci_disable_rom pci_disable_sriov pcie_bandwidth_available +pcie_capability_clear_and_set_word pcie_capability_read_dword pcie_capability_read_word pcie_capability_write_word pcie_flr +pcie_get_speed_cap +pcie_get_width_cap +pci_enable_atomic_ops_to_root pci_enable_device pci_enable_device_mem pci_enable_msi pci_enable_msix_range pci_enable_pcie_error_reporting +pci_enable_rom pci_enable_sriov pci_enable_wake pcie_print_link_status +pcie_relaxed_ordering_enabled pcie_set_readrq pci_find_capability pci_find_ext_capability pci_free_irq pci_free_irq_vectors +pci_get_class pci_get_device pci_get_domain_bus_and_slot +pci_get_slot +pci_ignore_hotplug +pci_intx pci_iomap pci_ioremap_bar pci_irq_get_affinity pci_irq_vector +pci_map_rom pci_match_id +pcim_enable_device pcim_iomap +pcim_iomap_regions +pcim_iomap_table pcim_iounmap +pci_msi_mask_irq +pci_msi_unmask_irq pci_num_vf +pci_platform_rom pci_prepare_to_sleep pci_read_config_byte pci_read_config_dword pci_read_config_word +pci_read_vpd __pci_register_driver pci_release_regions +pci_release_resource pci_release_selected_regions pci_request_irq pci_request_regions pci_request_selected_regions +pci_rescan_bus +pci_resize_resource pci_restore_state pci_save_state pci_select_bars @@ -1176,10 +1717,15 @@ pci_set_power_state pci_sriov_configure_simple pci_sriov_get_totalvfs pci_sriov_set_totalvfs +pci_stop_and_remove_bus_device pci_stop_and_remove_bus_device_locked pci_try_set_mwi +pci_unmap_rom pci_unregister_driver pci_vfs_assigned +pci_vpd_find_info_keyword +pci_vpd_find_tag +pci_wait_for_pending_transaction pci_wake_from_d3 pci_write_config_byte pci_write_config_dword @@ -1194,6 +1740,8 @@ perf_trace_buf_alloc perf_trace_run_bpf_submit pfn_valid phy_attach_direct +phy_attached_info +phy_connect phy_connect_direct phy_device_free phy_device_register @@ -1209,6 +1757,7 @@ phy_start_aneg phy_stop phy_suspend pid_task +pid_vnr platform_bus_type platform_device_register platform_device_register_full @@ -1218,6 +1767,8 @@ platform_driver_unregister platform_get_irq platform_get_resource platform_get_resource_byname +pm_power_off +pm_runtime_allow __pm_runtime_disable pm_runtime_enable pm_runtime_forbid @@ -1225,7 +1776,11 @@ __pm_runtime_idle __pm_runtime_resume pm_runtime_set_autosuspend_delay __pm_runtime_set_status +__pm_runtime_suspend __pm_runtime_use_autosuspend +pm_schedule_suspend +power_supply_is_system_supplied +prandom_bytes prandom_u32 prepare_creds prepare_to_wait @@ -1258,6 +1813,8 @@ __put_net __put_page __put_task_struct put_unused_fd +qed_get_eth_ops +qed_put_eth_ops queue_delayed_work_on queued_read_lock_slowpath queued_spin_lock_slowpath @@ -1271,6 +1828,7 @@ radix_tree_lookup radix_tree_next_chunk __radix_tree_next_slot radix_tree_preload +radix_tree_tagged radix_tree_tag_set raid_class_attach raid_class_release @@ -1279,28 +1837,46 @@ raw_notifier_call_chain raw_notifier_chain_register raw_notifier_chain_unregister rb_erase +__rb_erase_color rb_first +rb_first_postorder +__rb_insert_augmented rb_insert_color rb_next +rb_next_postorder +rb_replace_node +rbt_ib_umem_for_each_in_range +rbt_ib_umem_lookup rcu_barrier __rdma_accept rdma_bind_addr rdma_connect rdma_consumer_reject_data +rdma_copy_ah_attr +rdma_create_ah __rdma_create_id rdma_create_qp +rdma_destroy_ah +rdma_destroy_ah_attr rdma_destroy_id rdma_destroy_qp rdma_disconnect rdma_event_msg +rdma_is_zero_gid rdma_listen rdma_nl_put_driver_u32 rdma_nl_put_driver_u64 rdma_notify +rdma_port_get_link_layer +rdma_query_ah +rdma_query_gid rdma_reject rdma_reject_msg rdma_resolve_addr rdma_resolve_route +rdma_restrack_get +rdma_restrack_put +rdma_roce_rescan_device rdma_rw_ctx_destroy rdma_rw_ctx_init rdma_rw_ctx_post @@ -1308,23 +1884,29 @@ rdma_rw_ctx_wrs rdma_set_afonly read_cache_pages recalc_sigpending +refcount_dec_and_mutex_lock refcount_dec_and_test_checked refcount_dec_checked refcount_dec_if_one refcount_inc_checked refcount_inc_not_zero_checked register_acpi_hed_notifier +register_acpi_notifier register_blkdev __register_chrdev register_chrdev_region register_console register_die_notifier +register_fib_notifier +register_inet6addr_notifier +register_inetaddr_notifier register_ip_vs_scheduler register_kprobe register_module_notifier register_netdev register_netdevice register_netdevice_notifier +register_netevent_notifier register_oom_notifier register_pernet_device register_pernet_subsys @@ -1333,16 +1915,25 @@ register_sysctl_table regmap_read regmap_write release_firmware +release_pages __release_region release_sock remap_pfn_range +remove_conflicting_framebuffers remove_proc_entry remove_wait_queue request_firmware request_firmware_direct +request_firmware_nowait __request_module __request_region request_threaded_irq +reservation_object_add_excl_fence +reservation_object_add_shared_fence +reservation_object_get_fences_rcu +reservation_object_reserve_shared +reservation_object_wait_timeout_rcu +reservation_ww_class reset_devices revalidate_disk revert_creds @@ -1350,6 +1941,11 @@ rhashtable_destroy rhashtable_free_and_destroy rhashtable_init rhashtable_insert_slow +rhashtable_walk_enter +rhashtable_walk_exit +rhashtable_walk_next +rhashtable_walk_start_check +rhashtable_walk_stop rhltable_init rht_bucket_nested rht_bucket_nested_insert @@ -1397,6 +1993,7 @@ sas_port_add_phy sas_port_alloc_num sas_port_delete sas_port_delete_phy +sas_port_free sas_prep_resume_ha sas_queuecommand sas_read_port_mode_page @@ -1411,11 +2008,15 @@ sas_suspend_ha sas_target_alloc sas_target_destroy sas_unregister_ha +save_stack_trace save_stack_trace_tsk sbitmap_queue_clear __sbitmap_queue_get scatterwalk_map_and_copy +sched_clock +sched_setscheduler schedule +schedule_hrtimeout schedule_hrtimeout_range schedule_timeout schedule_timeout_interruptible @@ -1429,15 +2030,19 @@ scsi_build_sense_buffer scsi_change_queue_depth scsi_cmd_get_serial scsi_command_normalize_sense +scsi_device_get scsi_device_lookup scsi_device_put scsi_device_set_state +scsi_device_type scsi_dma_map scsi_dma_unmap +__scsi_execute scsi_get_vpd_page scsi_host_alloc scsi_host_busy scsi_host_get +scsi_host_lookup scsi_host_put scsi_internal_device_block_nowait scsi_internal_device_unblock_nowait @@ -1446,17 +2051,23 @@ scsi_is_host_device scsi_is_sdev_device __scsi_iterate_devices scsilun_to_int +scsi_normalize_sense scsi_print_command scsi_queue_work +scsi_register_driver scsi_remove_device scsi_remove_host scsi_remove_target +scsi_sanitize_inquiry_string scsi_scan_host scsi_sense_key_string scsi_unblock_requests sdev_prefix_printk __secpath_destroy secpath_dup +secure_tcp_seq +secure_tcpv6_seq +security_d_instantiate security_release_secctx security_secid_to_secctx security_tun_dev_alloc_security @@ -1469,11 +2080,14 @@ send_sig seq_list_next seq_list_start seq_lseek +seq_open seq_printf seq_putc seq_put_decimal_ull seq_puts seq_read +seq_release +seq_write set_cpus_allowed_ptr set_current_groups set_device_ro @@ -1484,12 +2098,17 @@ set_page_dirty set_page_dirty_lock set_user_nice sg_alloc_table_chained +sg_alloc_table_from_pages sg_copy_from_buffer sg_copy_to_buffer +sg_free_table sg_free_table_chained sg_init_table sgl_alloc sgl_free +sg_miter_next +sg_miter_start +sg_miter_stop sg_nents sg_next __sg_page_iter_next @@ -1499,6 +2118,10 @@ sg_pcopy_to_buffer sg_zero_buffer sigprocmask si_meminfo +simple_attr_open +simple_attr_read +simple_attr_release +simple_attr_write simple_open simple_read_from_buffer simple_strtol @@ -1527,6 +2150,7 @@ skb_ensure_writable __skb_flow_dissect __skb_get_hash __skb_gso_segment +skb_gso_validate_mac_len __skb_pad skb_partial_csum_set skb_pull @@ -1539,6 +2163,7 @@ skb_realloc_headroom __skb_recv_datagram skb_scrub_packet skb_set_owner_w +skb_store_bits skb_trim skb_try_coalesce skb_tstamp_tx @@ -1559,14 +2184,18 @@ snprintf sock_alloc_send_pskb sock_create sock_create_kern +sock_edemux sockfd_lookup sock_init_data +sock_queue_err_skb sock_recv_errqueue sock_release sock_zerocopy_callback +softnet_data sort sprintf sprint_symbol +srcu_barrier __srcu_read_lock __srcu_read_unlock sscanf @@ -1596,8 +2225,13 @@ strsep strspn strstr submit_bio +__sw_hweight32 __sw_hweight64 __sw_hweight8 +swiotlb_nr_tbl +switchdev_port_same_parent_id +__symbol_put +sync_file_create synchronize_irq synchronize_net synchronize_rcu_bh @@ -1618,6 +2252,7 @@ sysfs_remove_group sysfs_remove_link sysfs_streq system_state +system_unbound_wq system_wq sys_tz t10_pi_complete @@ -1625,15 +2260,24 @@ t10_pi_prepare t10_pi_type1_crc t10_pi_type3_crc tap_get_socket +task_active_pid_ns tasklet_init tasklet_kill __tasklet_schedule __task_pid_nr_ns tcf_block_cb_register tcf_block_cb_unregister +tcp_gro_complete +tcp_hashinfo +tc_setup_cb_egdev_register +tc_setup_cb_egdev_unregister +time64_to_tm timecounter_cyc2time timecounter_init timecounter_read +tls_get_record +tls_validate_xmit_skb +to_drm_sched_fence totalram_pages trace_define_field trace_event_buffer_commit @@ -1642,7 +2286,9 @@ trace_event_ignore_this_pid trace_event_raw_init trace_event_reg trace_handle_return +__tracepoint_dma_fence_emit __tracepoint_xdp_exception +trace_print_array_seq trace_print_flags_seq trace_print_symbols_seq trace_raw_output_prep @@ -1651,38 +2297,75 @@ trace_seq_putc try_module_get try_wait_for_completion ttm_bo_add_to_lru +ttm_bo_clean_mm ttm_bo_del_sub_from_lru ttm_bo_device_init ttm_bo_device_release ttm_bo_dma_acc_size +ttm_bo_eviction_valuable +ttm_bo_evict_mm ttm_bo_global_init ttm_bo_global_release ttm_bo_init ttm_bo_init_mm +ttm_bo_init_reserved ttm_bo_kmap ttm_bo_kunmap +ttm_bo_lock_delayed_workqueue ttm_bo_manager_func +ttm_bo_mem_put +ttm_bo_mem_space ttm_bo_mmap +ttm_bo_move_accel_cleanup +ttm_bo_move_memcpy +ttm_bo_move_to_lru_tail +ttm_bo_move_ttm +ttm_bo_pipeline_move +ttm_bo_put +ttm_bo_unlock_delayed_workqueue ttm_bo_unref ttm_bo_validate +ttm_bo_wait +ttm_dma_page_alloc_debugfs +ttm_dma_populate +ttm_dma_tt_fini +ttm_dma_tt_init +ttm_dma_unpopulate +ttm_eu_backoff_reservation +ttm_eu_fence_buffer_objects +ttm_eu_reserve_buffers +ttm_fbdev_mmap ttm_mem_global_init ttm_mem_global_release +ttm_page_alloc_debugfs +ttm_pool_populate +ttm_pool_unpopulate +ttm_populate_and_map_pages +ttm_sg_tt_init +ttm_tt_bind ttm_tt_fini ttm_tt_init +ttm_tt_set_placement_caching +ttm_unmap_and_unpopulate_pages __udelay udp4_hwcsum udp_encap_enable +uio_event_notify __uio_register_device uio_unregister_device unlock_page unlock_page_memcg unmap_mapping_range unregister_acpi_hed_notifier +unregister_acpi_notifier unregister_blkdev __unregister_chrdev unregister_chrdev_region unregister_console unregister_die_notifier +unregister_fib_notifier +unregister_inet6addr_notifier +unregister_inetaddr_notifier unregister_ip_vs_scheduler unregister_kprobe unregister_module_notifier @@ -1690,6 +2373,7 @@ unregister_netdev unregister_netdevice_many unregister_netdevice_notifier unregister_netdevice_queue +unregister_netevent_notifier unregister_oom_notifier unregister_pernet_device unregister_pernet_subsys @@ -1705,6 +2389,13 @@ usleep_range uuid_gen uuid_null uuid_parse +_uverbs_alloc +uverbs_copy_to +uverbs_destroy_def_handler +uverbs_fd_class +uverbs_get_flags32 +uverbs_get_flags64 +uverbs_idr_class vfio_register_iommu_driver vfio_unregister_iommu_driver vfree @@ -1712,13 +2403,16 @@ vfs_fallocate vfs_fsync vfs_getattr vfs_statfs +vga_client_register vlan_dev_real_dev vlan_dev_vlan_id +vlan_dev_vlan_proto vmalloc __vmalloc vmalloc_node vmalloc_to_page vmap +vm_insert_page vm_mmap vm_munmap vm_zone_stat @@ -1730,27 +2424,41 @@ vunmap vzalloc vzalloc_node wait_for_completion +wait_for_completion_interruptible wait_for_completion_interruptible_timeout wait_for_completion_io_timeout +wait_for_completion_killable wait_for_completion_timeout wait_on_page_bit __wake_up wake_up_bit +__wake_up_locked wake_up_process __wake_up_sync_key __warn_printk +work_busy write_cache_pages +ww_mutex_lock ww_mutex_lock_interruptible ww_mutex_unlock xdp_do_flush_map xdp_do_redirect xdp_return_frame xdp_return_frame_rx_napi +xdp_rxq_info_is_reg xdp_rxq_info_reg xdp_rxq_info_reg_mem_model xdp_rxq_info_unreg xdp_rxq_info_unused +xfrm_replay_seqhi +xz_dec_end +xz_dec_init +xz_dec_run yield zap_vma_ptes zerocopy_sg_from_iter zgid +zlib_inflate +zlib_inflateEnd +zlib_inflateInit2 +zlib_inflate_workspacesize -- 2.25.1

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[PATCH openEuler-1.0-LTS 001/149] iommu/vt-d: Duplicate iommu_resv_region objects per device list
by Yang Yingliang 30 Jun '21

30 Jun '21

From: Eric Auger <eric.auger(a)redhat.com> [ Upstream commit 5f64ce5411b467f1cfea6c63e2494c22b773582b ] intel_iommu_get_resv_regions() aims to return the list of reserved regions accessible by a given @device. However several devices can access the same reserved memory region and when building the list it is not safe to use a single iommu_resv_region object, whose container is the RMRR. This iommu_resv_region must be duplicated per device reserved region list. Let's remove the struct iommu_resv_region from the RMRR unit and allocate the iommu_resv_region directly in intel_iommu_get_resv_regions(). We hold the dmar_global_lock instead of the rcu-lock to allow sleeping. Fixes: 0659b8dc45a6 ("iommu/vt-d: Implement reserved region get/put callbacks") Signed-off-by: Eric Auger <eric.auger(a)redhat.com> Reviewed-by: Lu Baolu <baolu.lu(a)linux.intel.com> Signed-off-by: Joerg Roedel <jroedel(a)suse.de> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/iommu/intel-iommu.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index d62fb1c31749b..58614c469db4f 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -387,7 +387,6 @@ struct dmar_rmrr_unit { u64 end_address; /* reserved end address */ struct dmar_dev_scope *devices; /* target devices */ int devices_cnt; /* target device count */ - struct iommu_resv_region *resv; /* reserved region handle */ }; struct dmar_atsr_unit { @@ -4214,7 +4213,6 @@ static inline void init_iommu_pm_ops(void) {} int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg) { struct acpi_dmar_reserved_memory *rmrr; - int prot = DMA_PTE_READ|DMA_PTE_WRITE; struct dmar_rmrr_unit *rmrru; size_t length; @@ -4228,22 +4226,16 @@ int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg) rmrru->end_address = rmrr->end_address; length = rmrr->end_address - rmrr->base_address + 1; - rmrru->resv = iommu_alloc_resv_region(rmrr->base_address, length, prot, - IOMMU_RESV_DIRECT); - if (!rmrru->resv) - goto free_rmrru; rmrru->devices = dmar_alloc_dev_scope((void *)(rmrr + 1), ((void *)rmrr) + rmrr->header.length, &rmrru->devices_cnt); if (rmrru->devices_cnt && rmrru->devices == NULL) - goto free_all; + goto free_rmrru; list_add(&rmrru->list, &dmar_rmrr_units); return 0; -free_all: - kfree(rmrru->resv); free_rmrru: kfree(rmrru); out: @@ -4461,7 +4453,6 @@ static void intel_iommu_free_dmars(void) list_for_each_entry_safe(rmrru, rmrr_n, &dmar_rmrr_units, list) { list_del(&rmrru->list); dmar_free_dev_scope(&rmrru->devices, &rmrru->devices_cnt); - kfree(rmrru->resv); kfree(rmrru); } @@ -5258,22 +5249,33 @@ static void intel_iommu_remove_device(struct device *dev) static void intel_iommu_get_resv_regions(struct device *device, struct list_head *head) { + int prot = DMA_PTE_READ | DMA_PTE_WRITE; struct iommu_resv_region *reg; struct dmar_rmrr_unit *rmrr; struct device *i_dev; int i; - rcu_read_lock(); + down_read(&dmar_global_lock); for_each_rmrr_units(rmrr) { for_each_active_dev_scope(rmrr->devices, rmrr->devices_cnt, i, i_dev) { + struct iommu_resv_region *resv; + size_t length; + if (i_dev != device) continue; - list_add_tail(&rmrr->resv->list, head); + length = rmrr->end_address - rmrr->base_address + 1; + resv = iommu_alloc_resv_region(rmrr->base_address, + length, prot, + IOMMU_RESV_DIRECT); + if (!resv) + break; + + list_add_tail(&resv->list, head); } } - rcu_read_unlock(); + up_read(&dmar_global_lock); reg = iommu_alloc_resv_region(IOAPIC_RANGE_START, IOAPIC_RANGE_END - IOAPIC_RANGE_START + 1, @@ -5288,10 +5290,8 @@ static void intel_iommu_put_resv_regions(struct device *dev, { struct iommu_resv_region *entry, *next; - list_for_each_entry_safe(entry, next, head, list) { - if (entry->type == IOMMU_RESV_MSI) - kfree(entry); - } + list_for_each_entry_safe(entry, next, head, list) + kfree(entry); } #ifdef CONFIG_INTEL_IOMMU_SVM -- 2.25.1

1 148

[PATCH openEuler-1.0-LTS 01/27] mm, oom: reorganize the oom report in dump_header
by Yang Yingliang 30 Jun '21

30 Jun '21

From: yuzhoujian <yuzhoujian(a)didichuxing.com> mainline inclusion from mainline-5.0-rc1 commit ef8444ea01d7442652f8e1b8a8b94278cb57eafd category: bugfix bugzilla: 51815, https://gitee.com/openeuler/kernel/issues/I3IJ9I CVE: NA ------------------------------------------------- OOM report contains several sections. The first one is the allocation context that has triggered the OOM. Then we have cpuset context followed by the stack trace of the OOM path. The tird one is the OOM memory information. Followed by the current memory state of all system tasks. At last, we will show oom eligible tasks and the information about the chosen oom victim. One thing that makes parsing more awkward than necessary is that we do not have a single and easily parsable line about the oom context. This patch is reorganizing the oom report to 1) who invoked oom and what was the allocation request [ 515.902945] tuned invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 2) OOM stack trace [ 515.904273] CPU: 24 PID: 1809 Comm: tuned Not tainted 4.20.0-rc3+ #3 [ 515.905518] Hardware name: Inspur SA5212M4/YZMB-00370-107, BIOS 4.1.10 11/14/2016 [ 515.906821] Call Trace: [ 515.908062] dump_stack+0x5a/0x73 [ 515.909311] dump_header+0x55/0x28c [ 515.914260] oom_kill_process+0x2d8/0x300 [ 515.916708] out_of_memory+0x145/0x4a0 [ 515.917932] __alloc_pages_slowpath+0x7d2/0xa16 [ 515.919157] __alloc_pages_nodemask+0x277/0x290 [ 515.920367] filemap_fault+0x3d0/0x6c0 [ 515.921529] ? filemap_map_pages+0x2b8/0x420 [ 515.922709] ext4_filemap_fault+0x2c/0x40 [ext4] [ 515.923884] __do_fault+0x20/0x80 [ 515.925032] __handle_mm_fault+0xbc0/0xe80 [ 515.926195] handle_mm_fault+0xfa/0x210 [ 515.927357] __do_page_fault+0x233/0x4c0 [ 515.928506] do_page_fault+0x32/0x140 [ 515.929646] ? page_fault+0x8/0x30 [ 515.930770] page_fault+0x1e/0x30 3) OOM memory information [ 515.958093] Mem-Info: [ 515.959647] active_anon:26501758 inactive_anon:1179809 isolated_anon:0 active_file:4402672 inactive_file:483963 isolated_file:1344 unevictable:0 dirty:4886753 writeback:0 unstable:0 slab_reclaimable:148442 slab_unreclaimable:18741 mapped:1347 shmem:1347 pagetables:58669 bounce:0 free:88663 free_pcp:0 free_cma:0 ... 4) current memory state of all system tasks [ 516.079544] [ 744] 0 744 9211 1345 114688 82 0 systemd-journal [ 516.082034] [ 787] 0 787 31764 0 143360 92 0 lvmetad [ 516.084465] [ 792] 0 792 10930 1 110592 208 -1000 systemd-udevd [ 516.086865] [ 1199] 0 1199 13866 0 131072 112 -1000 auditd [ 516.089190] [ 1222] 0 1222 31990 1 110592 157 0 smartd [ 516.091477] [ 1225] 0 1225 4864 85 81920 43 0 irqbalance [ 516.093712] [ 1226] 0 1226 52612 0 258048 426 0 abrtd [ 516.112128] [ 1280] 0 1280 109774 55 299008 400 0 NetworkManager [ 516.113998] [ 1295] 0 1295 28817 37 69632 24 0 ksmtuned [ 516.144596] [ 10718] 0 10718 2622484 1721372 15998976 267219 0 panic [ 516.145792] [ 10719] 0 10719 2622484 1164767 9818112 53576 0 panic [ 516.146977] [ 10720] 0 10720 2622484 1174361 9904128 53709 0 panic [ 516.148163] [ 10721] 0 10721 2622484 1209070 10194944 54824 0 panic [ 516.149329] [ 10722] 0 10722 2622484 1745799 14774272 91138 0 panic 5) oom context (contrains and the chosen victim). oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0-1,task=panic,pid=10737,uid=0 An admin can easily get the full oom context at a single line which makes parsing much easier. Link: http://lkml.kernel.org/r/1542799799-36184-1-git-send-email-ufo19890607@gmai… Signed-off-by: yuzhoujian <yuzhoujian(a)didichuxing.com> Acked-by: Michal Hocko <mhocko(a)suse.com> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: David Rientjes <rientjes(a)google.com> Cc: "Kirill A . Shutemov" <kirill.shutemov(a)linux.intel.com> Cc: Roman Gushchin <guro(a)fb.com> Cc: Tetsuo Handa <penguin-kernel(a)i-love.sakura.ne.jp> Cc: Yang Shi <yang.s(a)alibaba-inc.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> (cherry picked from commit ef8444ea01d7442652f8e1b8a8b94278cb57eafd) Signed-off-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Liu Shixin <liushixin2(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> (cherry picked from commit 985eab72d54b5ac73189d609486526b5e30125ac) Signed-off-by: Lu Jialin <lujialin4(a)huawei.com> Reviewed-by: Jing Xiangfeng <jingxiangfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/oom.h | 10 ++++++++++ kernel/cgroup/cpuset.c | 4 ++-- mm/oom_kill.c | 29 ++++++++++++++++++++--------- mm/page_alloc.c | 4 ++-- 4 files changed, 34 insertions(+), 13 deletions(-) diff --git a/include/linux/oom.h b/include/linux/oom.h index 2b2a40cc19bf4..123538b89dc8d 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -15,6 +15,13 @@ struct notifier_block; struct mem_cgroup; struct task_struct; +enum oom_constraint { + CONSTRAINT_NONE, + CONSTRAINT_CPUSET, + CONSTRAINT_MEMORY_POLICY, + CONSTRAINT_MEMCG, +}; + /* * Details of the page allocation that triggered the oom killer that are used to * determine what should be killed. @@ -42,6 +49,9 @@ struct oom_control { unsigned long totalpages; struct task_struct *chosen; unsigned long chosen_points; + + /* Used to print the constraint info. */ + enum oom_constraint constraint; }; extern struct mutex oom_lock; diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index a4ce9474a078c..feb91177247c8 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -2681,9 +2681,9 @@ void cpuset_print_current_mems_allowed(void) rcu_read_lock(); cgrp = task_cs(current)->css.cgroup; - pr_info("%s cpuset=", current->comm); + pr_cont(",cpuset="); pr_cont_cgroup_name(cgrp); - pr_cont(" mems_allowed=%*pbl\n", + pr_cont(",mems_allowed=%*pbl", nodemask_pr_args(&current->mems_allowed)); rcu_read_unlock(); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 2e09b03432c08..51104048b4e7f 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -250,11 +250,11 @@ unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg, return points > 0 ? points : 1; } -enum oom_constraint { - CONSTRAINT_NONE, - CONSTRAINT_CPUSET, - CONSTRAINT_MEMORY_POLICY, - CONSTRAINT_MEMCG, +static const char * const oom_constraint_text[] = { + [CONSTRAINT_NONE] = "CONSTRAINT_NONE", + [CONSTRAINT_CPUSET] = "CONSTRAINT_CPUSET", + [CONSTRAINT_MEMORY_POLICY] = "CONSTRAINT_MEMORY_POLICY", + [CONSTRAINT_MEMCG] = "CONSTRAINT_MEMCG", }; /* @@ -483,16 +483,25 @@ static void dump_tasks(struct mem_cgroup *memcg, const nodemask_t *nodemask) rcu_read_unlock(); } +static void dump_oom_summary(struct oom_control *oc, struct task_struct *victim) +{ + /* one line summary of the oom killer context. */ + pr_info("oom-kill:constraint=%s,nodemask=%*pbl", + oom_constraint_text[oc->constraint], + nodemask_pr_args(oc->nodemask)); + cpuset_print_current_mems_allowed(); + pr_cont(",task=%s,pid=%d,uid=%d\n", victim->comm, victim->pid, + from_kuid(&init_user_ns, task_uid(victim))); +} + static void dump_header(struct oom_control *oc, struct task_struct *p) { - pr_warn("%s invoked oom-killer: gfp_mask=%#x(%pGg), nodemask=%*pbl, order=%d, oom_score_adj=%hd\n", - current->comm, oc->gfp_mask, &oc->gfp_mask, - nodemask_pr_args(oc->nodemask), oc->order, + pr_warn("%s invoked oom-killer: gfp_mask=%#x(%pGg), order=%d, oom_score_adj=%hd\n", + current->comm, oc->gfp_mask, &oc->gfp_mask, oc->order, current->signal->oom_score_adj); if (!IS_ENABLED(CONFIG_COMPACTION) && oc->order) pr_warn("COMPACTION is disabled!!!\n"); - cpuset_print_current_mems_allowed(); dump_stack(); if (is_memcg_oom(oc)) mem_cgroup_print_oom_info(oc->memcg, p); @@ -503,6 +512,8 @@ static void dump_header(struct oom_control *oc, struct task_struct *p) } if (sysctl_oom_dump_tasks) dump_tasks(oc->memcg, oc->nodemask); + if (p) + dump_oom_summary(oc, p); } /* diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6bf3d4461430e..2b5a60a856680 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3529,13 +3529,13 @@ void warn_alloc(gfp_t gfp_mask, nodemask_t *nodemask, const char *fmt, ...) va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; - pr_warn("%s: %pV, mode:%#x(%pGg), nodemask=%*pbl\n", + pr_warn("%s: %pV, mode:%#x(%pGg), nodemask=%*pbl", current->comm, &vaf, gfp_mask, &gfp_mask, nodemask_pr_args(nodemask)); va_end(args); cpuset_print_current_mems_allowed(); - + pr_cont("\n"); dump_stack(); warn_alloc_show_mem(gfp_mask, nodemask); } -- 2.25.1

1 26

[PATCH openEuler-1.0-LTS 1/5] memcg: support priority for oom
by Yang Yingliang 30 Jun '21

30 Jun '21

From: Jing Xiangfeng <jingxiangfeng(a)huawei.com> hulk inclusion category: feature bugzilla: 51827 CVE: NA -------------------------------------- We first kill the process from the low priority memcg if OOM occurs. If the process is not found, then fallback to normal handle. Signed-off-by: Jing Xiangfeng <jingxiangfeng(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/memcontrol.h | 12 ++++ mm/Kconfig | 12 ++++ mm/memcontrol.c | 127 +++++++++++++++++++++++++++++++++++++ mm/oom_kill.c | 52 ++++++++++++++- 4 files changed, 202 insertions(+), 1 deletion(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index f354e76221db2..c4d4658c7d6df 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -287,6 +287,12 @@ struct mem_cgroup { bool tcpmem_active; int tcpmem_pressure; +#ifdef CONFIG_MEMCG_QOS + /* Currently support 0 and -1. + * in the future it can expand to other value. + */ + int memcg_priority; +#endif #ifdef CONFIG_MEMCG_KMEM /* Index in the kmem_cache->memcg_params.memcg_caches array */ int kmemcg_id; @@ -321,6 +327,12 @@ struct mem_cgroup_extension { struct mem_cgroup memcg; }; +#ifdef CONFIG_MEMCG_QOS +bool memcg_low_priority_scan_tasks(int (*)(struct task_struct *, void *), + void *); +void memcg_print_bad_task(void *arg, int ret); +#endif + /* * size of first charge trial. "32" comes from vmscan.c's magic value. * TODO: maybe necessary to use big numbers in big irons. diff --git a/mm/Kconfig b/mm/Kconfig index 92be0a1ad61f7..7edf3c4c1252b 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -512,6 +512,18 @@ config USERSWAP Support for User Swap. This is based on userfaultfd. We can implement our own swapout and swapin functions in usersapce. +config MEMCG_QOS + bool "Enable Memory Cgroup Priority" + depends on MEMCG + depends on X86 || ARM64 + default y + help + MEMCG_QOS means that we first kill the process from the low priority + memcg if OOM occurs. If the process is not found, then fallback to + normal handle. + + If unsure, say "n". + config CMA bool "Contiguous Memory Allocator" depends on HAVE_MEMBLOCK && MMU diff --git a/mm/memcontrol.c b/mm/memcontrol.c index f401be9d45a5c..31352be988114 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1105,6 +1105,9 @@ int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, break; } } +#ifdef CONFIG_MEMCG_QOS + memcg_print_bad_task(arg, ret); +#endif return ret; } @@ -3400,6 +3403,119 @@ static int mem_cgroup_move_charge_write(struct cgroup_subsys_state *css, } #endif +#ifdef CONFIG_MEMCG_QOS +static void memcg_qos_init(struct mem_cgroup *memcg) +{ + struct mem_cgroup *parent = parent_mem_cgroup(memcg); + + if (!parent) + return; + + if (parent->memcg_priority && parent->use_hierarchy) + memcg->memcg_priority = parent->memcg_priority; +} + +static s64 memcg_qos_read(struct cgroup_subsys_state *css, + struct cftype *cft) +{ + return mem_cgroup_from_css(css)->memcg_priority; +} + +static int memcg_qos_write(struct cgroup_subsys_state *css, + struct cftype *cft, s64 val) +{ + struct mem_cgroup *memcg = mem_cgroup_from_css(css); + + if (val >= 0) + memcg->memcg_priority = 0; + else + memcg->memcg_priority = -1; + + return 0; +} + +static struct mem_cgroup *memcg_find_max_usage(struct mem_cgroup *last) +{ + struct mem_cgroup *iter, *max_memcg = NULL; + struct cgroup_subsys_state *css; + unsigned long usage, max_usage = 0; + + rcu_read_lock(); + css_for_each_descendant_pre(css, &root_mem_cgroup->css) { + iter = mem_cgroup_from_css(css); + + if (!iter->memcg_priority || iter == root_mem_cgroup || + iter == last) + continue; + + usage = mem_cgroup_usage(iter, false); + if (usage > max_usage) { + max_usage = usage; + max_memcg = iter; + } + } + rcu_read_unlock(); + + return max_memcg; +} + +bool memcg_low_priority_scan_tasks(int (*fn)(struct task_struct *, void *), + void *arg) +{ + struct mem_cgroup *max, *last = NULL; + struct oom_control *oc = arg; + struct css_task_iter it; + struct task_struct *task; + int ret = 0; + bool retry = true; + +retry: + max = memcg_find_max_usage(last); + if (!max) + return false; + + css_task_iter_start(&max->css, 0, &it); + while (!ret && (task = css_task_iter_next(&it))) { + if (test_tsk_thread_flag(task, TIF_MEMDIE)) { + pr_info("task %s is dying.\n", task->comm); + continue; + } + + ret = fn(task, arg); + } + css_task_iter_end(&it); + + if (ret) + return false; + + if (!oc->chosen && retry) { + last = max; + retry = false; + goto retry; + } + + if (oc->chosen) + pr_info("The bad task [%d:%s] is from low-priority memcg.\n", + oc->chosen->pid, oc->chosen->comm); + + return oc->chosen ? true : false; +} + +void memcg_print_bad_task(void *arg, int ret) +{ + struct oom_control *oc = arg; + + if (!ret && oc->chosen) { + struct mem_cgroup *memcg; + + memcg = mem_cgroup_from_task(oc->chosen); + if (memcg->memcg_priority) + pr_info("The bad task [%d:%s] is from low-priority memcg.\n", + oc->chosen->pid, oc->chosen->comm); + } +} +#endif + #ifdef CONFIG_NUMA static int memcg_numa_stat_show(struct seq_file *m, void *v) { @@ -4324,6 +4440,13 @@ static struct cftype mem_cgroup_legacy_files[] = { { .name = "pressure_level", }, +#ifdef CONFIG_MEMCG_QOS + { + .name = "qos_level", + .read_s64 = memcg_qos_read, + .write_s64 = memcg_qos_write, + }, +#endif #ifdef CONFIG_NUMA { .name = "numa_stat", @@ -4657,6 +4780,10 @@ static int mem_cgroup_css_online(struct cgroup_subsys_state *css) return -ENOMEM; } +#ifdef CONFIG_MEMCG_QOS + memcg_qos_init(memcg); +#endif + /* Online state pins memcg ID, memcg ID pins CSS */ atomic_set(&memcg->id.ref, 1); css_get(css); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 1c8236cbb9022..22a6f88d1f4d9 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -317,6 +317,49 @@ static enum oom_constraint constrained_alloc(struct oom_control *oc) return CONSTRAINT_NONE; } +#ifdef CONFIG_MEMCG_QOS +/** + * We choose the task in low-priority memcg firstly. For the same state, we + * choose the task with the highest number of 'points'. + */ +static bool oom_next_task(struct task_struct *task, struct oom_control *oc, + unsigned long points) +{ + struct mem_cgroup *cur_memcg; + struct mem_cgroup *oc_memcg; + + + if (!points) + return true; + + if (!oc->chosen) + return false; + + oc_memcg = mem_cgroup_from_task(oc->chosen); + cur_memcg = mem_cgroup_from_task(task); + + if (cur_memcg->memcg_priority == oc_memcg->memcg_priority) { + if (points < oc->chosen_points) + return true; + return false; + } + /* if oc is low-priority, so skip the task */ + if (oc_memcg->memcg_priority) + return true; + + return false; +} +#else +static inline bool oom_next_task(struct task_struct *task, + struct oom_control *oc, unsigned long points) +{ + if (!points || points < oc->chosen_points) + return true; + + return false; +} +#endif + static int oom_evaluate_task(struct task_struct *task, void *arg) { struct oom_control *oc = arg; @@ -347,7 +390,7 @@ static int oom_evaluate_task(struct task_struct *task, void *arg) } points = oom_badness(task, NULL, oc->nodemask, oc->totalpages); - if (!points || points < oc->chosen_points) + if (oom_next_task(task, oc, points)) goto next; select: @@ -376,6 +419,13 @@ static void select_bad_process(struct oom_control *oc) else { struct task_struct *p; +#ifdef CONFIG_MEMCG_QOS + if (memcg_low_priority_scan_tasks(oom_evaluate_task, oc)) { + oc->chosen_points = + oc->chosen_points * 1000 / oc->totalpages; + return; + } +#endif rcu_read_lock(); for_each_process(p) if (oom_evaluate_task(p, oc)) -- 2.25.1

1 4

[PATCH kernel-4.19 1/4] memcg: support priority for oom
by Yang Yingliang 30 Jun '21

30 Jun '21

From: Jing Xiangfeng <jingxiangfeng(a)huawei.com> hulk inclusion category: feature bugzilla: 51827 CVE: NA -------------------------------------- We first kill the process from the low priority memcg if OOM occurs. If the process is not found, then fallback to normal handle. Signed-off-by: Jing Xiangfeng <jingxiangfeng(a)huawei.com> Reviewed-by: Liu Shixin <liushixin2(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/memcontrol.h | 12 ++++ mm/Kconfig | 12 ++++ mm/memcontrol.c | 127 +++++++++++++++++++++++++++++++++++++ mm/oom_kill.c | 49 +++++++++++++- 4 files changed, 199 insertions(+), 1 deletion(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 0a55493f41da0..d59ce25206de4 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -296,6 +296,12 @@ struct mem_cgroup { bool tcpmem_active; int tcpmem_pressure; +#ifdef CONFIG_MEMCG_QOS + /* Currently support 0 and -1. + * in the future it can expand to other value. + */ + int memcg_priority; +#endif #ifdef CONFIG_MEMCG_KMEM /* Index in the kmem_cache->memcg_params.memcg_caches array */ int kmemcg_id; @@ -327,6 +333,12 @@ struct mem_cgroup { /* WARNING: nodeinfo must be the last member here */ }; +#ifdef CONFIG_MEMCG_QOS +bool memcg_low_priority_scan_tasks(int (*)(struct task_struct *, void *), + void *); +void memcg_print_bad_task(void *arg, int ret); +#endif + /* * size of first charge trial. "32" comes from vmscan.c's magic value. * TODO: maybe necessary to use big numbers in big irons. diff --git a/mm/Kconfig b/mm/Kconfig index 8225489c6439d..12601505c4a4a 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -516,6 +516,18 @@ config USERSWAP Support for User Swap. This is based on userfaultfd. We can implement our own swapout and swapin functions in usersapce. +config MEMCG_QOS + bool "Enable Memory Cgroup Priority" + depends on MEMCG + depends on X86 || ARM64 + default y + help + MEMCG_QOS means that we first kill the process from the low priority + memcg if OOM occurs. If the process is not found, then fallback to + normal handle. + + If unsure, say "n". + config CMA bool "Contiguous Memory Allocator" depends on HAVE_MEMBLOCK && MMU diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 6b4b487f6ce75..5b90dd9871878 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1240,6 +1240,9 @@ int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, break; } } +#ifdef CONFIG_MEMCG_QOS + memcg_print_bad_task(arg, ret); +#endif return ret; } @@ -3641,6 +3644,119 @@ static int mem_cgroup_move_charge_write(struct cgroup_subsys_state *css, } #endif +#ifdef CONFIG_MEMCG_QOS +static void memcg_qos_init(struct mem_cgroup *memcg) +{ + struct mem_cgroup *parent = parent_mem_cgroup(memcg); + + if (!parent) + return; + + if (parent->memcg_priority && parent->use_hierarchy) + memcg->memcg_priority = parent->memcg_priority; +} + +static s64 memcg_qos_read(struct cgroup_subsys_state *css, + struct cftype *cft) +{ + return mem_cgroup_from_css(css)->memcg_priority; +} + +static int memcg_qos_write(struct cgroup_subsys_state *css, + struct cftype *cft, s64 val) +{ + struct mem_cgroup *memcg = mem_cgroup_from_css(css); + + if (val >= 0) + memcg->memcg_priority = 0; + else + memcg->memcg_priority = -1; + + return 0; +} + +static struct mem_cgroup *memcg_find_max_usage(struct mem_cgroup *last) +{ + struct mem_cgroup *iter, *max_memcg = NULL; + struct cgroup_subsys_state *css; + unsigned long usage, max_usage = 0; + + rcu_read_lock(); + css_for_each_descendant_pre(css, &root_mem_cgroup->css) { + iter = mem_cgroup_from_css(css); + + if (!iter->memcg_priority || iter == root_mem_cgroup || + iter == last) + continue; + + usage = mem_cgroup_usage(iter, false); + if (usage > max_usage) { + max_usage = usage; + max_memcg = iter; + } + } + rcu_read_unlock(); + + return max_memcg; +} + +bool memcg_low_priority_scan_tasks(int (*fn)(struct task_struct *, void *), + void *arg) +{ + struct mem_cgroup *max, *last = NULL; + struct oom_control *oc = arg; + struct css_task_iter it; + struct task_struct *task; + int ret = 0; + bool retry = true; + +retry: + max = memcg_find_max_usage(last); + if (!max) + return false; + + css_task_iter_start(&max->css, 0, &it); + while (!ret && (task = css_task_iter_next(&it))) { + if (test_tsk_thread_flag(task, TIF_MEMDIE)) { + pr_info("task %s is dying.\n", task->comm); + continue; + } + + ret = fn(task, arg); + } + css_task_iter_end(&it); + + if (ret) + return false; + + if (!oc->chosen && retry) { + last = max; + retry = false; + goto retry; + } + + if (oc->chosen) + pr_info("The bad task [%d:%s] is from low-priority memcg.\n", + oc->chosen->pid, oc->chosen->comm); + + return oc->chosen ? true : false; +} + +void memcg_print_bad_task(void *arg, int ret) +{ + struct oom_control *oc = arg; + + if (!ret && oc->chosen) { + struct mem_cgroup *memcg; + + memcg = mem_cgroup_from_task(oc->chosen); + if (memcg->memcg_priority) + pr_info("The bad task [%d:%s] is from low-priority memcg.\n", + oc->chosen->pid, oc->chosen->comm); + } +} +#endif + #ifdef CONFIG_NUMA #define LRU_ALL_FILE (BIT(LRU_INACTIVE_FILE) | BIT(LRU_ACTIVE_FILE)) @@ -4596,6 +4712,13 @@ static struct cftype mem_cgroup_legacy_files[] = { { .name = "pressure_level", }, +#ifdef CONFIG_MEMCG_QOS + { + .name = "qos_level", + .read_s64 = memcg_qos_read, + .write_s64 = memcg_qos_write, + }, +#endif #ifdef CONFIG_NUMA { .name = "numa_stat", @@ -4947,6 +5070,10 @@ static int mem_cgroup_css_online(struct cgroup_subsys_state *css) return -ENOMEM; } +#ifdef CONFIG_MEMCG_QOS + memcg_qos_init(memcg); +#endif + /* Online state pins memcg ID, memcg ID pins CSS */ atomic_set(&memcg->id.ref, 1); css_get(css); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 0dbd6d2a31733..f46c8fa9a1254 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -318,6 +318,49 @@ static enum oom_constraint constrained_alloc(struct oom_control *oc) return CONSTRAINT_NONE; } +#ifdef CONFIG_MEMCG_QOS +/** + * We choose the task in low-priority memcg firstly. For the same state, we + * choose the task with the highest number of 'points'. + */ +static bool oom_next_task(struct task_struct *task, struct oom_control *oc, + unsigned long points) +{ + struct mem_cgroup *cur_memcg; + struct mem_cgroup *oc_memcg; + + + if (!points) + return true; + + if (!oc->chosen) + return false; + + oc_memcg = mem_cgroup_from_task(oc->chosen); + cur_memcg = mem_cgroup_from_task(task); + + if (cur_memcg->memcg_priority == oc_memcg->memcg_priority) { + if (points < oc->chosen_points) + return true; + return false; + } + /* if oc is low-priority, so skip the task */ + if (oc_memcg->memcg_priority) + return true; + + return false; +} +#else +static inline bool oom_next_task(struct task_struct *task, + struct oom_control *oc, unsigned long points) +{ + if (!points || points < oc->chosen_points) + return true; + + return false; +} +#endif + static int oom_evaluate_task(struct task_struct *task, void *arg) { struct oom_control *oc = arg; @@ -348,7 +391,7 @@ static int oom_evaluate_task(struct task_struct *task, void *arg) } points = oom_badness(task, NULL, oc->nodemask, oc->totalpages); - if (!points || points < oc->chosen_points) + if (oom_next_task(task, oc, points)) goto next; select: @@ -377,6 +420,10 @@ static void select_bad_process(struct oom_control *oc) else { struct task_struct *p; +#ifdef CONFIG_MEMCG_QOS + if (memcg_low_priority_scan_tasks(oom_evaluate_task, oc)) + return; +#endif rcu_read_lock(); for_each_process(p) if (oom_evaluate_task(p, oc)) -- 2.25.1

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