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[PATCH openEuler-22.03-LTS-SP1 0/5] md: protect md_thread with rcu
by Li Lingfeng 05 Jan '24

05 Jan '24

Protect md_thread with rcu. Yu Kuai (5): md: factor out a helper to wake up md_thread directly dm-raid: remove useless checking in raid_message() md/bitmap: always wake up md_thread in timeout_store md/bitmap: factor out a helper to set timeout md: protect md_thread with rcu drivers/md/dm-raid.c | 4 +- drivers/md/md-bitmap.c | 43 +++++++++++-------- drivers/md/md-cluster.c | 17 +++++--- drivers/md/md-multipath.c | 4 +- drivers/md/md.c | 88 +++++++++++++++++++++------------------ drivers/md/md.h | 8 ++-- drivers/md/raid1.c | 7 ++-- drivers/md/raid1.h | 2 +- drivers/md/raid10.c | 20 +++++---- drivers/md/raid10.h | 2 +- drivers/md/raid5-cache.c | 22 ++++++---- drivers/md/raid5.c | 15 +++---- drivers/md/raid5.h | 2 +- 13 files changed, 132 insertions(+), 102 deletions(-) -- 2.31.1

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[PATCH openEuler-22.03-LTS 0/5] md: protect md_thread with rcu
by Li Lingfeng 05 Jan '24

05 Jan '24

Protect md_thread with rcu. Yu Kuai (5): md: factor out a helper to wake up md_thread directly dm-raid: remove useless checking in raid_message() md/bitmap: always wake up md_thread in timeout_store md/bitmap: factor out a helper to set timeout md: protect md_thread with rcu drivers/md/dm-raid.c | 4 +- drivers/md/md-bitmap.c | 43 +++++++++++-------- drivers/md/md-cluster.c | 17 +++++--- drivers/md/md-multipath.c | 4 +- drivers/md/md.c | 88 +++++++++++++++++++++------------------ drivers/md/md.h | 8 ++-- drivers/md/raid1.c | 7 ++-- drivers/md/raid1.h | 2 +- drivers/md/raid10.c | 20 +++++---- drivers/md/raid10.h | 2 +- drivers/md/raid5-cache.c | 22 ++++++---- drivers/md/raid5.c | 15 +++---- drivers/md/raid5.h | 2 +- 13 files changed, 132 insertions(+), 102 deletions(-) -- 2.31.1

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[PATCH OLK-6.6 0/6] Backport etmem feature to OLK 6.6
by Yuchen Tang 04 Jan '24

04 Jan '24

Yuchen Tang (6): etmem: add etmem scan feature to openEuler mm: Export symbol reclaim_pages etmem: add etmem swap feature to openEuler etmem: add original kernel swap enabled options etmem: add swapcache reclaim to etmem etmem: enable etmem configurations arch/arm64/configs/openeuler_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 3 + fs/proc/Makefile | 3 + fs/proc/base.c | 8 + fs/proc/etmem_proc.c | 216 ++++ fs/proc/etmem_scan.c | 1383 ++++++++++++++++++++++++ fs/proc/etmem_scan.h | 149 +++ fs/proc/etmem_swap.c | 283 +++++ fs/proc/internal.h | 4 + include/linux/etmem.h | 75 ++ include/linux/mm.h | 4 + include/linux/mm_types.h | 7 + include/linux/swap.h | 2 +- include/uapi/asm-generic/mman-common.h | 4 + mm/Kconfig | 33 + mm/Makefile | 1 + mm/etmem.c | 384 +++++++ mm/huge_memory.c | 3 + mm/internal.h | 1 - mm/madvise.c | 16 + mm/pagewalk.c | 3 + mm/swap_state.c | 4 + mm/vmscan.c | 20 + virt/kvm/kvm_main.c | 6 + 24 files changed, 2613 insertions(+), 2 deletions(-) create mode 100644 fs/proc/etmem_proc.c create mode 100644 fs/proc/etmem_scan.c create mode 100644 fs/proc/etmem_scan.h create mode 100644 fs/proc/etmem_swap.c create mode 100644 include/linux/etmem.h create mode 100644 mm/etmem.c -- 2.33.0

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[PATCH OLK-5.10 0/3] cppc_cpufreq: use policy->cpu in cppc_set_perf()
by Zeng Heng 04 Jan '24

04 Jan '24

Ionela Voinescu (2): cppc_cpufreq: clean up cpu, cpu_num and cpunum variable use cppc_cpufreq: use policy->cpu as driver of frequency setting Zeng Heng (1): cppc_cpufreq: get cpunum from fb_ctrs instead of smp_processor_id() drivers/cpufreq/cppc_cpufreq.c | 166 +++++++++++++++++---------------- 1 file changed, 85 insertions(+), 81 deletions(-) -- 2.25.1

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[PATCH OLK-6.6] arm64: clear_page: Add cmdline option for clear_page() by STNP
by Wei Li 04 Jan '24

04 Jan '24

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I3ZN72 CVE: NA --------------------------- Generally, clear_page() clear the page through 'dc zva', while the page may not be used immediately mostly, so the cache flush is in vain. Commit f0616abd4e67 ("arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1") introduced an alternative implementation by 'stnp', also bring performance profit in some case. Make it switchable through boot cmdline 'mm.use_clearpage_stnp'. In the hugetlb clear test, we gained about 53.7% performance improvement: Set mm.use_clearpage_stnp = 0 | Set mm.use_clearpage_stnp = 1 [root@localhost liwei]# ./a.out 50 20 | [root@localhost liwei]# ./a.out 50 20 size is 50 Gib, test times is 20 | size is 50 Gib, test times is 20 test_time[0] : use 8.438046 sec | test_time[0] : use 3.722682 sec test_time[1] : use 8.028493 sec | test_time[1] : use 3.640274 sec test_time[2] : use 8.646547 sec | test_time[2] : use 4.095052 sec test_time[3] : use 8.122490 sec | test_time[3] : use 3.998446 sec test_time[4] : use 8.053038 sec | test_time[4] : use 4.084259 sec test_time[5] : use 8.843512 sec | test_time[5] : use 3.933871 sec test_time[6] : use 8.308906 sec | test_time[6] : use 3.934334 sec test_time[7] : use 8.093817 sec | test_time[7] : use 3.869142 sec test_time[8] : use 8.303504 sec | test_time[8] : use 3.902916 sec test_time[9] : use 8.178336 sec | test_time[9] : use 3.541885 sec test_time[10] : use 8.003625 sec | test_time[10] : use 3.595554 sec test_time[11] : use 8.163807 sec | test_time[11] : use 3.583813 sec test_time[12] : use 8.267464 sec | test_time[12] : use 3.863033 sec test_time[13] : use 8.055326 sec | test_time[13] : use 3.770953 sec test_time[14] : use 8.246986 sec | test_time[14] : use 3.808006 sec test_time[15] : use 8.546992 sec | test_time[15] : use 3.653194 sec test_time[16] : use 8.727256 sec | test_time[16] : use 3.722395 sec test_time[17] : use 8.288951 sec | test_time[17] : use 3.683508 sec test_time[18] : use 8.019322 sec | test_time[18] : use 4.253087 sec test_time[19] : use 8.250685 sec | test_time[19] : use 4.082845 sec hugetlb test end! | hugetlb test end! Signed-off-by: Wei Li <liwei391(a)huawei.com> --- arch/arm64/kernel/cpufeature.c | 24 ++++++++++++++++++++++++ arch/arm64/lib/clear_page.S | 3 ++- arch/arm64/tools/cpucaps | 1 + 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 455e72ce080a..3517dd2b0358 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2242,6 +2242,24 @@ cpucap_panic_on_conflict(const struct arm64_cpu_capabilities *cap) return !!(cap->type & ARM64_CPUCAP_PANIC_ON_CONFLICT); } +static bool use_clearpage_stnp; + +static int __init early_use_clearpage_stnp(char *p) +{ + return strtobool(p, &use_clearpage_stnp); +} +early_param("mm.use_clearpage_stnp", early_use_clearpage_stnp); + +static bool is_datazero_prohibited(const struct arm64_cpu_capabilities *entry, + int scope) +{ + /* Active if DC ZVA is prohibited */ + if (read_sysreg(dczid_el0) & BIT(DCZID_EL0_DZP_SHIFT)) + return true; + + return use_clearpage_stnp; +} + static const struct arm64_cpu_capabilities arm64_features[] = { { .capability = ARM64_ALWAYS_BOOT, @@ -2722,6 +2740,12 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .matches = has_cpuid_feature, ARM64_CPUID_FIELDS(ID_AA64MMFR2_EL1, EVT, IMP) }, + { + .desc = "Data Zero Prohibited", + .capability = ARM64_HAS_NO_DCZVA, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = is_datazero_prohibited, + }, {}, }; diff --git a/arch/arm64/lib/clear_page.S b/arch/arm64/lib/clear_page.S index ebde40e7fa2b..3884572296d6 100644 --- a/arch/arm64/lib/clear_page.S +++ b/arch/arm64/lib/clear_page.S @@ -7,6 +7,7 @@ #include <linux/const.h> #include <asm/assembler.h> #include <asm/page.h> +#include <asm/alternative.h> /* * Clear page @dest @@ -16,7 +17,7 @@ */ SYM_FUNC_START(__pi_clear_page) mrs x1, dczid_el0 - tbnz x1, #4, 2f /* Branch if DC ZVA is prohibited */ + ALTERNATIVE("nop", "b 2f", ARM64_HAS_NO_DCZVA) and w1, w1, #0xf mov x2, #4 lsl x1, x2, x1 diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 569ecec76c16..88f1f4022b8f 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -39,6 +39,7 @@ HAS_LDAPR HAS_LSE_ATOMICS HAS_MOPS HAS_NESTED_VIRT +HAS_NO_DCZVA HAS_NO_FPSIMD HAS_NO_HW_PREFETCH HAS_PAN -- 2.25.1

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[PATCH OLK-6.6 0/4] KABI reservation for driver
by Yi Yang 04 Jan '24

04 Jan '24

KABI reservation for tty/mtd/mmc/ipmi Yi Yang (4): tty: kabi: KABI reservation for tty mtd: kabi: KABI reservation for mtd mmc: kabi: KABI reservation for mmc ipmi: kabi: KABI reservation for ipmi drivers/char/ipmi/ipmi_msghandler.c | 6 ++++++ include/linux/ipmi.h | 2 ++ include/linux/ipmi_smi.h | 3 +++ include/linux/mmc/card.h | 6 ++++++ include/linux/mmc/host.h | 8 ++++++++ include/linux/mtd/mtd.h | 8 ++++++++ include/linux/mtd/partitions.h | 2 ++ include/linux/tty.h | 7 +++++++ include/linux/tty_buffer.h | 4 ++++ include/linux/tty_driver.h | 3 +++ include/linux/tty_ldisc.h | 3 +++ include/linux/tty_port.h | 3 +++ 12 files changed, 55 insertions(+) -- 2.25.1

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[PATCH OLK-6.6 0/2] kabi reserve for memcg and cgroup bpf
by Lu Jialin 04 Jan '24

04 Jan '24

Lu Jialin (2): memcg/kabi: reserve space for memcg related structures cgroup_bpf/kabi: reserve space for cgroup_bpf releated structure include/linux/bpf-cgroup-defs.h | 28 ++++++++++++++++++++++++++++ include/linux/bpf.h | 11 +++++++++++ include/linux/memcontrol.h | 28 ++++++++++++++++++++++++++++ mm/memcontrol.c | 7 +++++++ 4 files changed, 74 insertions(+) -- 2.34.1

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[PATCH OLK-6.6 00/12] Backport vDPA migration support patches
by Jiang Dongxu 04 Jan '24

04 Jan '24

From: jiangdongxu <jiangdongxu1(a)huawei.com> Backport vDPA migration support patches merged on branch OLK-5.10. jiangdongxu (12): vdpa: add log operations vhost-vdpa: add uAPI for logging vdpa: add device state operations vhost-vdpa: add uAPI for device buffer vdpa: add vdpa device migration status ops vhost-vdpa: add uAPI for device migration status vhost: add VHOST feature VHOST_BACKEND_F_BYTEMAPLOG vhost-vdpa: Allow transparent MSI IOV vhost-vdpa: fix msi irq request err vhost-vdpa: allow set feature VHOST_F_LOG_ALL when been negotiated. vhost-vdpa: add reset state params to indicate reset level vdpa: add vmstate header file drivers/vdpa/ifcvf/ifcvf_main.c | 2 +- drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 +- drivers/vdpa/vdpa_sim/vdpa_sim.c | 2 +- drivers/vdpa/virtio_pci/vp_vdpa.c | 2 +- drivers/vhost/vdpa.c | 233 +++++++++++++++++++++++++++--- drivers/virtio/virtio_vdpa.c | 2 +- include/linux/vdpa.h | 56 ++++++- include/linux/vdpa_vmstate.h | 182 +++++++++++++++++++++++ include/uapi/linux/vhost.h | 12 ++ include/uapi/linux/vhost_types.h | 19 +++ 10 files changed, 484 insertions(+), 28 deletions(-) create mode 100644 include/linux/vdpa_vmstate.h -- 2.27.0

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[PATCH OLK-6.6] scsi: sd: unregister device if device_add_disk() failed in sd_probe()
by Li Nan 04 Jan '24

04 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8TPCX ---------------------------------------- "if device_add() succeeds, you should call device_del() when you want to get rid of it." In sd_probe(), device_add_disk() fails when device_add() has already succeeded, so change put_device() to device_unregister() to ensure device resources are released. Fixes: 2a7a891f4c40 ("scsi: sd: Add error handling support for add_disk()") Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/scsi/sd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 6effa13039f3..72a7e80b6401 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3725,7 +3725,7 @@ static int sd_probe(struct device *dev) error = device_add_disk(dev, gd, NULL); if (error) { - put_device(&sdkp->disk_dev); + device_unregister(&sdkp->disk_dev); put_disk(gd); goto out; } -- 2.39.2

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[PATCH OLK-6.6] ubi: block: fix memleak in ubiblock_create()
by Li Nan 04 Jan '24

04 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8P68G ------------------------------- If idr_alloc() fails, dev->gd will be put after goto out_cleanup_disk in ubiblock_create(), but dev->gd has not been assigned yet at this time, and gd will not be put anymore. Fix it by putting gd directly. Signed-off-by: Li Nan <linan122(a)huawei.com> --- drivers/mtd/ubi/block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index 309a42aeaa4c..654bd7372cd8 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -434,7 +434,7 @@ int ubiblock_create(struct ubi_volume_info *vi) list_del(&dev->list); idr_remove(&ubiblock_minor_idr, gd->first_minor); out_cleanup_disk: - put_disk(dev->gd); + put_disk(gd); out_free_tags: blk_mq_free_tag_set(&dev->tag_set); out_free_dev: -- 2.39.2

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