August 2023 - Kernel - mailweb.openeuler.org

[PATCH OLK-5.10] arm64/mpam: mark partid non-exclusive if self-owned
by Yu Liao 14 Aug '23

14 Aug '23

From: Wang ShaoBo <bobo.shaobowang(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7SVKK -------------------------------- MPAM manages RMID in a matrix using PARTID as columns and PMG as rows. ------------row----------------------> | | RMID 0 1 2 3 ... 255 | 256 257 258 259 ... 511 | 512 513 514 515 ... 767 v 768 769 770 771 ... 1023 Each time mon_groups is created, a new PARTID will be consumed until all PARTID are exhausted and PMG still has remaining. As a result, RMID greater than 255 cannot be used. mon_groups in the same resource group should reuse PARTID to avoid rmid waste. Fix it by adding 'exclusive' parameter to rmid_remap_bmp_find_step_entry() 1) Allocate non-exclusive rmid for rmid_alloc() 2) Allocate exclusive rmid when 'partid = old_reqpartid' for resctrl_group_rmid_write(). Otherwise, allocate non-exclusive rmid. Signed-off-by: Wang ShaoBo <bobo.shaobowang(a)huawei.com> Signed-off-by: Yu Liao <liaoyu15(a)huawei.com> --- arch/arm64/kernel/mpam/mpam_resctrl.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/arch/arm64/kernel/mpam/mpam_resctrl.c b/arch/arm64/kernel/mpam/mpam_resctrl.c index 4a1e376ec497..bb241d8071d7 100644 --- a/arch/arm64/kernel/mpam/mpam_resctrl.c +++ b/arch/arm64/kernel/mpam/mpam_resctrl.c @@ -919,7 +919,7 @@ static int is_rmid_remap_bmp_full(unsigned long *bmp) bitmap_full(bmp, rmid_remap_matrix.rows)); } -static int rmid_remap_bmp_find_step_entry(int partid) +static int rmid_remap_bmp_find_step_entry(int partid, bool exclusive) { int x, y; unsigned long **bmp; @@ -931,7 +931,7 @@ static int rmid_remap_bmp_find_step_entry(int partid) /* step entry should be non-occupied and aligned */ bmp = __rmid_remap_bmp(partid); if (bmp) - return (is_rmid_remap_bmp_occ(*bmp) || + return ((exclusive && is_rmid_remap_bmp_occ(*bmp)) || !__step_align(partid)) ? -ENOSPC : partid; for_each_rmid_transform_point_from(bmp, x, y, 0) { @@ -1024,7 +1024,7 @@ static int rmid_to_partid_pmg(int rmid, int *partid, int *pmg) return 0; } -static int __rmid_alloc(int partid, int pmg) +static int __rmid_alloc(int partid, int pmg, bool exclusive) { int x, y, step, ret, rmid; bool checkpmg = false; @@ -1034,7 +1034,7 @@ static int __rmid_alloc(int partid, int pmg) checkpmg = true; /* traverse from first non-occupied and step-aligned entry */ - ret = rmid_remap_bmp_find_step_entry(partid); + ret = rmid_remap_bmp_find_step_entry(partid, exclusive); if (ret < 0) goto out; partid = ret; @@ -1084,7 +1084,7 @@ static int __rmid_alloc(int partid, int pmg) int rmid_alloc(int partid) { - return __rmid_alloc(partid, -1); + return __rmid_alloc(partid, -1, false); } void rmid_free(int rmid) @@ -1914,6 +1914,7 @@ static ssize_t resctrl_group_rmid_write(struct kernfs_open_file *of, struct rdtgroup *rdtgrp; int ret = 0; int partid; + bool exclusive; int pmg; int rmid; int old_rmid; @@ -1954,15 +1955,16 @@ static ssize_t resctrl_group_rmid_write(struct kernfs_open_file *of, goto unlock; } - ret = __rmid_alloc(partid, pmg); + old_rmid = rdtgrp->mon.rmid; + old_reqpartid = rdtgrp->closid.reqpartid; + + exclusive = (partid == old_reqpartid) ? false : true; + ret = __rmid_alloc(partid, pmg, exclusive); if (ret < 0) { rdt_last_cmd_puts("set rmid failed\n"); goto unlock; } - old_rmid = rdtgrp->mon.rmid; - old_reqpartid = rdtgrp->closid.reqpartid; - /* * we use intpartid as group control, use reqpartid for config * synchronization and monitor, only update the reqpartid -- 2.25.1

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[PATCH openEuler-23.09 v2 0/7] sched: Support dynamic affinity in scheduler
by Hui Tang 14 Aug '23

14 Aug '23

This pathchset support dynamic affinity feature. Dynamic affinity set preferred cpus for task. When the utilization of taskgroup's preferred cpu is low, task only run in cpus preferred to enhance cpu resource locality and reduce interference between task cgroups, otherwise task can burst preferred cpus to use external cpu within cpus allowed. v1 -> v2 - some cleanup fix Hui Tang (1): sched: Add cmdline for dynamic affinity tanghui (6): sched: Introduce dynamic affinity for cfs scheduler cpuset: Introduce new interface for scheduler dynamic affinity sched: Adjust wakeup cpu range according CPU util dynamicly sched: Adjust cpu allowed in load balance dynamicly sched: Add statistics for scheduler dynamic affinity config: enable CONFIG_QOS_SCHED_DYNAMIC_AFFINITY by default arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/proc/base.c | 73 +++++++++++ include/linux/sched.h | 22 ++++ include/linux/sched/sysctl.h | 3 + init/Kconfig | 10 ++ init/init_task.c | 3 + kernel/cgroup/cpuset.c | 153 ++++++++++++++++++++++- kernel/fork.c | 16 +++ kernel/sched/core.c | 98 +++++++++++++++ kernel/sched/debug.c | 6 + kernel/sched/fair.c | 162 +++++++++++++++++++++++++ kernel/sysctl.c | 11 ++ 13 files changed, 558 insertions(+), 1 deletion(-) -- 2.17.1

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[PATCH OLK-5.10 0/3] fix CVE-2023-4128 in OLK510
by Liu Jian 14 Aug '23

14 Aug '23

fix CVE-2023-4128 in OLK510 valis (3): net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free net/sched/cls_fw.c | 1 - net/sched/cls_route.c | 1 - net/sched/cls_u32.c | 1 - 3 files changed, 3 deletions(-) -- 2.34.1

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[PATCH openEuler-1.0-LTS 0/2] tun/tap: fix CVE-2023-4194
by Dong Chenchen 14 Aug '23

14 Aug '23

The original patches fixing CVE-2023-1076 are incorrect. The patches in this series are supposed to "re-fix" CVE-2023-1076 New CVE is CVE-2023-4194. Laszlo Ersek (2): net: tun_chr_open(): set sk_uid from current_fsuid() net: tap_open(): set sk_uid from current_fsuid() drivers/net/tap.c | 2 +- drivers/net/tun.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) -- 2.25.1

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[PATCH openEuler-1.0-LTS 0/3] fix CVE-2023-4128
by Liu Jian 14 Aug '23

14 Aug '23

fix CVE-2023-4128 in openEuler1.0 valis (3): net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after-free net/sched/cls_fw.c | 1 - net/sched/cls_route.c | 1 - net/sched/cls_u32.c | 1 - 3 files changed, 3 deletions(-) -- 2.34.1

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[PATCH OLK-5.10 v4 00/15] add support for timer_shutdown() api
by Yu Liao 11 Aug '23

11 Aug '23

timer_shutdown_sync() function is useful for final teardown of an infrastructure where the timer is subject to a circular dependency problem. A common pattern for this is a timer and a workqueue where the timer can schedule work and work can arm the timer. On shutdown the workqueue must be destroyed and the timer must be prevented from rearming. Unless the code has conditionals like 'if (mything->in_shutdown)' to prevent that there is no way to get this correct with timer_delete_sync(). timer_shutdown_sync() is solving the problem. The correct ordering of calls in this case is: timer_shutdown_sync(&mything->timer); workqueue_destroy(&mything->workqueue); After this 'mything' can be safely freed. Steven Rostedt (Google) (3): ARM: spear: Do not use timer namespace for timer_shutdown() function clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer_shutdown() function clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function Thomas Gleixner (10): timers: Get rid of del_singleshot_timer_sync() timers: Replace BUG_ON()s timers: Update kernel-doc for various functions timers: Use del_timer_sync() even on UP timers: Rename del_timer_sync() to timer_delete_sync() timers: Rename del_timer() to timer_delete() timers: Silently ignore timers with a NULL function timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode timers: Add shutdown mechanism to the internal functions timers: Provide timer_shutdown[_sync]() Yu Liao (2): sw64: Do not use timer namespace for timer_shutdown() function timers: Keep del_timer[_sync]() exported arch/arm/mach-spear/time.c | 8 +- arch/sw_64/kernel/timer.c | 8 +- drivers/char/tpm/tpm-dev-common.c | 4 +- drivers/clocksource/arm_arch_timer.c | 12 +- drivers/clocksource/timer-sp804.c | 6 +- drivers/misc/sgi-xp/xpc_partition.c | 2 +- drivers/staging/wlan-ng/hfa384x_usb.c | 4 +- drivers/staging/wlan-ng/prism2usb.c | 6 +- include/linux/timer.h | 15 +- kernel/time/timer.c | 449 ++++++++++++++++++++------ net/sunrpc/xprt.c | 2 +- 11 files changed, 386 insertions(+), 130 deletions(-) -- 2.25.1

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[PATCH OLK-5.10 v3 00/15] add support for timer_shutdown() api
by Yu Liao 11 Aug '23

11 Aug '23

timer_shutdown_sync() function is useful for final teardown of an infrastructure where the timer is subject to a circular dependency problem. A common pattern for this is a timer and a workqueue where the timer can schedule work and work can arm the timer. On shutdown the workqueue must be destroyed and the timer must be prevented from rearming. Unless the code has conditionals like 'if (mything->in_shutdown)' to prevent that there is no way to get this correct with timer_delete_sync(). timer_shutdown_sync() is solving the problem. The correct ordering of calls in this case is: timer_shutdown_sync(&mything->timer); workqueue_destroy(&mything->workqueue); After this 'mything' can be safely freed. Steven Rostedt (Google) (3): ARM: spear: Do not use timer namespace for timer_shutdown() function clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer_shutdown() function clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function Thomas Gleixner (10): timers: Get rid of del_singleshot_timer_sync() timers: Replace BUG_ON()s timers: Update kernel-doc for various functions timers: Use del_timer_sync() even on UP timers: Rename del_timer_sync() to timer_delete_sync() timers: Rename del_timer() to timer_delete() timers: Silently ignore timers with a NULL function timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode timers: Add shutdown mechanism to the internal functions timers: Provide timer_shutdown[_sync]() Yu Liao (2): sw64: Do not use timer namespace for timer_shutdown() function timers: Keep del_timer[_sync]() exported arch/arm/mach-spear/time.c | 8 +- arch/sw_64/kernel/timer.c | 8 +- drivers/char/tpm/tpm-dev-common.c | 4 +- drivers/clocksource/arm_arch_timer.c | 12 +- drivers/clocksource/timer-sp804.c | 6 +- drivers/misc/sgi-xp/xpc_partition.c | 2 +- drivers/staging/wlan-ng/hfa384x_usb.c | 4 +- drivers/staging/wlan-ng/prism2usb.c | 6 +- include/linux/timer.h | 15 +- kernel/time/timer.c | 449 ++++++++++++++++++++------ net/sunrpc/xprt.c | 2 +- 11 files changed, 386 insertions(+), 130 deletions(-) -- 2.25.1

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[PATCH v2 OLK-5.10 00/13] add support for timer_shutdown() api
by Yu Liao 11 Aug '23

11 Aug '23

timer_shutdown_sync() function is useful for final teardown of an infrastructure where the timer is subject to a circular dependency problem. A common pattern for this is a timer and a workqueue where the timer can schedule work and work can arm the timer. On shutdown the workqueue must be destroyed and the timer must be prevented from rearming. Unless the code has conditionals like 'if (mything->in_shutdown)' to prevent that there is no way to get this correct with timer_delete_sync(). timer_shutdown_sync() is solving the problem. The correct ordering of calls in this case is: timer_shutdown_sync(&mything->timer); workqueue_destroy(&mything->workqueue); After this 'mything' can be safely freed. Steven Rostedt (Google) (2): clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer_shutdown() function clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function Thomas Gleixner (10): timers: Get rid of del_singleshot_timer_sync() timers: Replace BUG_ON()s timers: Update kernel-doc for various functions timers: Use del_timer_sync() even on UP timers: Rename del_timer_sync() to timer_delete_sync() timers: Rename del_timer() to timer_delete() timers: Silently ignore timers with a NULL function timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode timers: Add shutdown mechanism to the internal functions timers: Provide timer_shutdown[_sync]() Yu Liao (1): timers: Keep del_timer[_sync]() exported drivers/char/tpm/tpm-dev-common.c | 4 +- drivers/clocksource/arm_arch_timer.c | 12 +- drivers/clocksource/timer-sp804.c | 6 +- drivers/misc/sgi-xp/xpc_partition.c | 2 +- drivers/staging/wlan-ng/hfa384x_usb.c | 4 +- drivers/staging/wlan-ng/prism2usb.c | 6 +- include/linux/timer.h | 15 +- kernel/time/timer.c | 449 ++++++++++++++++++++------ net/sunrpc/xprt.c | 2 +- 9 files changed, 378 insertions(+), 122 deletions(-) -- 2.25.1

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[PATCH OLK-5.10 00/17] add support for timer_shutdown() api
by Yu Liao 11 Aug '23

11 Aug '23

timer_shutdown_sync() function is useful for final teardown of an infrastructure where the timer is subject to a circular dependency problem. A common pattern for this is a timer and a workqueue where the timer can schedule work and work can arm the timer. On shutdown the workqueue must be destroyed and the timer must be prevented from rearming. Unless the code has conditionals like 'if (mything->in_shutdown)' to prevent that there is no way to get this correct with timer_delete_sync(). timer_shutdown_sync() is solving the problem. The correct ordering of calls in this case is: timer_shutdown_sync(&mything->timer); workqueue_destroy(&mything->workqueue); After this 'mything' can be safely freed. Steven Rostedt (Google) (4): ARM: spear: Do not use timer namespace for timer_shutdown() function clocksource/drivers/arm_arch_timer: Do not use timer namespace for timer_shutdown() function clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function timers: Update the documentation to reflect on the new timer_shutdown() API Thomas Gleixner (12): Documentation: Remove bogus claim about del_timer_sync() timers: Get rid of del_singleshot_timer_sync() timers: Replace BUG_ON()s timers: Update kernel-doc for various functions timers: Use del_timer_sync() even on UP timers: Rename del_timer_sync() to timer_delete_sync() timers: Rename del_timer() to timer_delete() Documentation: Replace del_timer/del_timer_sync() timers: Silently ignore timers with a NULL function timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode timers: Add shutdown mechanism to the internal functions timers: Provide timer_shutdown[_sync]() Yu Liao (1): timers: Keep del_timer[_sync]() exported .../RCU/Design/Requirements/Requirements.rst | 2 +- Documentation/core-api/local_ops.rst | 2 +- Documentation/kernel-hacking/locking.rst | 17 +- Documentation/timers/hrtimers.rst | 2 +- .../it_IT/kernel-hacking/locking.rst | 14 +- .../translations/zh_CN/core-api/local_ops.rst | 196 ++++++++ arch/arm/mach-spear/time.c | 8 +- drivers/char/tpm/tpm-dev-common.c | 4 +- drivers/clocksource/arm_arch_timer.c | 12 +- drivers/clocksource/timer-sp804.c | 6 +- drivers/misc/sgi-xp/xpc_partition.c | 2 +- drivers/staging/wlan-ng/hfa384x_usb.c | 4 +- drivers/staging/wlan-ng/prism2usb.c | 6 +- include/linux/timer.h | 15 +- kernel/time/timer.c | 449 ++++++++++++++---- net/sunrpc/xprt.c | 2 +- 16 files changed, 597 insertions(+), 144 deletions(-) create mode 100644 Documentation/translations/zh_CN/core-api/local_ops.rst -- 2.25.1

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[PATCH OLK-5.10 0/2] Cmdline for ARMv8 Pointer Authentication
by GONG, Ruiqi 11 Aug '23

11 Aug '23

GONG, Ruiqi (1): arm64: add cmdline to control ptrauth feature at boot Srinivas Ramana (1): arm64: Defer enabling pointer authentication on boot core arch/arm64/include/asm/pointer_auth.h | 10 +++++ arch/arm64/include/asm/stackprotector.h | 1 + arch/arm64/kernel/cpufeature.c | 54 ++++++++++++++++++++----- arch/arm64/kernel/head.S | 4 -- 4 files changed, 55 insertions(+), 14 deletions(-) -- 2.25.1

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