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[PATCH OLK-6.6 0/2] cgroup v1 writeback enable
by chenridong 11 Dec '23

11 Dec '23

Lu Jialin (2): cgroup: support cgroup writeback on cgroupv1 openeuler_defconfig: enable CONFIG_CGROUP_V1_WRITEBACK in openeuler_defconfig for x86 and arm64 arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + block/blk-cgroup.c | 3 + block/blk-cgroup.h | 3 + include/linux/backing-dev.h | 29 +++++- include/linux/cgroup-defs.h | 2 + include/linux/cgroup.h | 1 + include/linux/memcontrol.h | 5 ++ init/Kconfig | 5 ++ kernel/cgroup/cgroup.c | 28 ++++-- mm/backing-dev.c | 117 ++++++++++++++++++++++++- mm/memcontrol.c | 83 +++++++++++++++++- 12 files changed, 264 insertions(+), 14 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/5] LoongArch: add cpufreq and ls2k500 bmc support
by Hongchen Zhang 11 Dec '23

11 Dec '23

Chong Qiao (4): fbdev: add ls2k500sfb driver for ls2k500 bmc. ipmi: add ls2k500 bmc ipmi support. LoongArch: defconfig: enable CONFIG_FB_LS2K500=m. LoongArch: fix ls2k500 bmc not work when installing iso liuyun (1): cpufreq: Add cpufreq driver for LoongArch arch/loongarch/Kconfig | 1 + arch/loongarch/configs/loongson3_defconfig | 5 + arch/loongarch/include/asm/fpu.h | 13 +- drivers/char/ipmi/Makefile | 4 + drivers/char/ipmi/btlock.h | 92 ++ drivers/char/ipmi/ipmi_si.h | 11 + drivers/char/ipmi/ipmi_si_intf.c | 4 + drivers/char/ipmi/ipmi_si_ls2k500.c | 173 +++ drivers/char/ipmi/kcs_bmc_ls2k500.h | 67 + drivers/cpufreq/Kconfig | 11 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/loongson3-acpi-cpufreq.c | 1527 ++++++++++++++++++++ drivers/gpu/drm/loongson/loongson_module.c | 15 + drivers/video/fbdev/Kconfig | 13 + drivers/video/fbdev/Makefile | 1 + drivers/video/fbdev/ls2k500sfb.c | 792 ++++++++++ 16 files changed, 2729 insertions(+), 1 deletion(-) create mode 100644 drivers/char/ipmi/btlock.h create mode 100644 drivers/char/ipmi/ipmi_si_ls2k500.c create mode 100644 drivers/char/ipmi/kcs_bmc_ls2k500.h create mode 100644 drivers/cpufreq/loongson3-acpi-cpufreq.c create mode 100644 drivers/video/fbdev/ls2k500sfb.c -- 2.33.0

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[PATCH 0/5] LoongArch: add cpufreq and ls2k500 bmc support
by Hongchen Zhang 11 Dec '23

11 Dec '23

Chong Qiao (4): fbdev: add ls2k500sfb driver for ls2k500 bmc. ipmi: add ls2k500 bmc ipmi support. LoongArch: defconfig: enable CONFIG_FB_LS2K500=m. LoongArch: fix ls2k500 bmc not work when installing iso liuyun (1): cpufreq: Add cpufreq driver for LoongArch arch/loongarch/Kconfig | 1 + arch/loongarch/configs/loongson3_defconfig | 5 + arch/loongarch/include/asm/fpu.h | 13 +- drivers/char/ipmi/Makefile | 4 + drivers/char/ipmi/btlock.h | 92 ++ drivers/char/ipmi/ipmi_si.h | 11 + drivers/char/ipmi/ipmi_si_intf.c | 4 + drivers/char/ipmi/ipmi_si_ls2k500.c | 173 +++ drivers/char/ipmi/kcs_bmc_ls2k500.h | 67 + drivers/cpufreq/Kconfig | 11 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/loongson3-acpi-cpufreq.c | 1527 ++++++++++++++++++++ drivers/gpu/drm/loongson/loongson_module.c | 15 + drivers/video/fbdev/Kconfig | 13 + drivers/video/fbdev/Makefile | 1 + drivers/video/fbdev/ls2k500sfb.c | 792 ++++++++++ 16 files changed, 2729 insertions(+), 1 deletion(-) create mode 100644 drivers/char/ipmi/btlock.h create mode 100644 drivers/char/ipmi/ipmi_si_ls2k500.c create mode 100644 drivers/char/ipmi/kcs_bmc_ls2k500.h create mode 100644 drivers/cpufreq/loongson3-acpi-cpufreq.c create mode 100644 drivers/video/fbdev/ls2k500sfb.c -- 2.33.0

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[PATCH OLK-5.10] smart_grid: cpufreq: clear offline and isolated CPU in warm CPUs
by Yipeng Zou 11 Dec '23

11 Dec '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8MFO6 CVE: NA ---------------------------------------- When there has some CPU has been offline or isolated, the warm zone CPUs will not clear these CPUs. Because of the warm zone were saluted by a complement of hot zone. So, we need to clear offline and isolated CPUs in every time's warm zone CPUs update. Fixes: 6a00891859d8 ("smart_grid: cpufreq: introduce smart_grid cpufreq control") Signed-off-by: Yipeng Zou <zouyipeng(a)huawei.com> --- kernel/sched/grid/qos.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/sched/grid/qos.c b/kernel/sched/grid/qos.c index f8c5deffd3ea..7ee3687347ce 100644 --- a/kernel/sched/grid/qos.c +++ b/kernel/sched/grid/qos.c @@ -179,6 +179,7 @@ int sched_grid_zone_update(bool is_locked) raw_spin_lock_irqsave(&sg_zone.lock, flags); cpumask_clear(&sg_zone.cpus[SMART_GRID_ZONE_HOT]); + cpumask_clear(&sg_zone.cpus[SMART_GRID_ZONE_WARM]); list_for_each(pos, &sg_zone.af_list_head) { af_pos = list_entry(pos, struct auto_affinity, af_list); @@ -190,10 +191,14 @@ int sched_grid_zone_update(bool is_locked) cpumask_or(&sg_zone.cpus[SMART_GRID_ZONE_HOT], &sg_zone.cpus[SMART_GRID_ZONE_HOT], af_pos->ad.domains[af_pos->ad.curr_level]); + /* Update warm zone CPUs to max level first */ + cpumask_or(&sg_zone.cpus[SMART_GRID_ZONE_WARM], &sg_zone.cpus[SMART_GRID_ZONE_WARM], + af_pos->ad.domains[af_pos->ad.dcount - 1]); } - cpumask_complement(&sg_zone.cpus[SMART_GRID_ZONE_WARM], - &sg_zone.cpus[SMART_GRID_ZONE_HOT]); + /* Then reset warm zone CPUs without hot zone CPUs */ + cpumask_andnot(&sg_zone.cpus[SMART_GRID_ZONE_WARM], &sg_zone.cpus[SMART_GRID_ZONE_WARM], + &sg_zone.cpus[SMART_GRID_ZONE_HOT]); if (!is_locked) raw_spin_unlock_irqrestore(&sg_zone.lock, flags); -- 2.34.1

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[PATCH OLK-6.6 0/4]cgroupv1 enable writeback
by chenridong 10 Dec '23

10 Dec '23

Lu Jialin (3): cgroup: Add cgroup1_get_from_id() cgroup: support cgroup writeback on cgroupv1 openeuler_defconfig: enable CONFIG_CGROUP_V1_WRITEBACK in openeuler_defconfig for x86 and arm64 chenridong (1): drop cgroup1_get_from_id, unify cgroup_get_from_id arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + block/blk-cgroup.c | 3 + block/blk-cgroup.h | 3 + include/linux/backing-dev.h | 29 +++++- include/linux/cgroup-defs.h | 2 + include/linux/cgroup.h | 1 + include/linux/memcontrol.h | 5 ++ init/Kconfig | 5 ++ kernel/cgroup/cgroup.c | 28 ++++-- mm/backing-dev.c | 117 ++++++++++++++++++++++++- mm/memcontrol.c | 83 +++++++++++++++++- 12 files changed, 264 insertions(+), 14 deletions(-) -- 2.34.1

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[PATCH V2 OLK-5.10 0/6] Make the rcache depot scale better
by Zhang Zekun 10 Dec '23

10 Dec '23

Recently we have meet a problem when running FIO test. In our kunpeng server with 320 cores, about 80% cpus comes to- 100% usage, and soft lockup appears in the kernel message, which shows it stuck in __alloc_and_insert_iova_range(). Both the call trace and high cpu occupy rate implys that the iova_rcache behaves poorly to alloc iovas. A similar problem has been addressed in early months this year, the solution is just to enlarge the MAX_GLOBAL_MAGS to 128, but it requires to growth with the cpu cores, and it is hard to set a accurate val for a specific machine. So, it is better to use solutions from the linux community, use a list to replace the array of iova_rcache->depot. It will push iova_magazine to depot list when the local cpu_rcache is full, and use schedul_delayed_work() to free it after 100ms. The minimum length of the depot list is the num of online_cpus(). The performance of this patch shows good. This patch set use a lot of timers to record the iova_magazine, and the delay of timers in system may increase when undering heavy work load, but it should not cause problem as timers itself allows a inaccurate delay for a range. v2: - change a comment in patch 5/6, no code change. We need to merge "iommu/iova: change IOVA_MAG_SIZE to 127 to save memory" first to resolve a compile error: error: static assertion failed: "!(sizeof(struct iova_magazine) & (sizeof(struct iova_magazine) - 1))" Feng Tang (1): iommu/iova: change IOVA_MAG_SIZE to 127 to save memory Zhang Zekun (5): Revert "iommu/iova: move IOVA_MAX_GLOBAL_MAGS outside of IOMMU_SUPPORT" Revert "config: enable set the max iova mag size to 128" Revert "iommu/iova: increase the iova_rcache depot max size to 128" iommu/iova: Make the rcache depot scale better iommu/iova: Manage the depot list size arch/arm64/configs/openeuler_defconfig | 1 - drivers/iommu/Kconfig | 10 ---- drivers/iommu/iova.c | 80 +++++++++++++++++++------- include/linux/iova.h | 7 ++- 4 files changed, 64 insertions(+), 34 deletions(-) -- 2.17.1

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[PATCH OLK-5.10] iommu/arm-smmu-v3: Add a SYNC command to avoid broken page table prefetch
by Zhang Zekun 10 Dec '23

10 Dec '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8MVBZ CVE: NA ----------------------------------------------- On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may prefetch and use a invalid PTE even the PTE is valid at that time. This will cause the device trigger fake pagefaults. If the SMMU works in terminate mode, transactions which occur fake pagefaults will be aborted, and could result in unexpected errors. To fix this problem, we need to add a SYNC command after smmu has map a iova, then smmu will always try to get the newest PTE. Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- Documentation/arm64/silicon-errata.rst | 2 ++ arch/arm64/Kconfig | 13 +++++++++++++ arch/arm64/include/asm/cpucaps.h | 1 + arch/arm64/kernel/cpu_errata.c | 14 ++++++++++++++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 20 ++++++++++++++++++++ 5 files changed, 50 insertions(+) diff --git a/Documentation/arm64/silicon-errata.rst b/Documentation/arm64/silicon-errata.rst index a9441bfebb0d..1f06e18a1859 100644 --- a/Documentation/arm64/silicon-errata.rst +++ b/Documentation/arm64/silicon-errata.rst @@ -156,6 +156,8 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | Hisilicon | LINXICORE9100 | #162100125 | HISILICON_ERRATUM_162100125 | +----------------+-----------------+-----------------+-----------------------------+ +| Hisilicon | LINXICORE9100 | #162100602 | HISILICON_ERRATUM_162100602 | ++----------------+-----------------+-----------------+-----------------------------+ | Hisilicon | HIP09 | #162102203 | HISILICON_ERRATUM_162102203 | +----------------+-----------------+-----------------+-----------------------------+ | Qualcomm Tech. | Kryo/Falkor v1 | E1003 | QCOM_FALKOR_ERRATUM_1003 | diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c5eca65c27fc..851d24a35e4e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -836,6 +836,19 @@ config HISILICON_ERRATUM_162102203 If unsure, say N. +config HISILICON_ERRATUM_162100602 + bool "Hisilicon erratum 162100602" + depends on ARM_SMMU_V3 + default y + help + On Hisilicon LINXICORE9100 cores, SMMU pagetable prefetch features may + prefetch and use a invalid PTE even the PTE is valid at that time. This + will cause the device trigger fake pagefaults. If the SMMU works in + terminate mode, transactions which occur fake pagefaults will be aborted, + and could result in unexpected errors. + + If unsure, say Y. + config QCOM_FALKOR_ERRATUM_1003 bool "Falkor E1003: Incorrect translation due to ASID change" default y diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index ce9fbf260a3c..0220f10cddd7 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -81,6 +81,7 @@ #define ARM64_HAS_PBHA_STAGE2 73 #define ARM64_SME 74 #define ARM64_SME_FA64 75 +#define ARM64_WORKAROUND_HISILICON_ERRATUM_162100602 76 #define ARM64_NCAPS 80 diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 7f175b3aac15..6a3e948d5c2c 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -331,6 +331,13 @@ static const struct midr_range hisilicon_erratum_162100125_cpus[] = { }; #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static const struct midr_range hisilicon_erratum_162100602_cpus[] = { + MIDR_REV(MIDR_HISI_LINXICORE9100, 0, 0), + {}, +}; +#endif + #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 static const struct arm64_cpu_capabilities qcom_erratum_1003_list[] = { { @@ -533,6 +540,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = { ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100125_cpus), }, #endif +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + { + .desc = "Hisilicon erratum 162100602", + .capability = ARM64_WORKAROUND_HISILICON_ERRATUM_162100602, + ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100602_cpus), + }, +#endif #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 { .desc = "Qualcomm Technologies Falkor/Kryo erratum 1003", diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index a55c2dab72f8..458151b7fab2 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2941,6 +2941,23 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain, gather->pgsize, true, smmu_domain); } +#ifdef CONFIG_HISILICON_ERRATUM_162100602 +static void arm_smmu_iotlb_sync_map(struct iommu_domain *domain, + unsigned long iova, size_t size) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + size_t granule_size; + + if (!cpus_have_const_cap(ARM64_WORKAROUND_HISILICON_ERRATUM_162100602)) + return; + + granule_size = 1 << __ffs(smmu_domain->domain.pgsize_bitmap); + + /* Add a SYNC command to sync io-pgtale to avoid errors in pgtable prefetch*/ + arm_smmu_tlb_inv_range_domain(iova, granule_size, granule_size, true, smmu_domain); +} +#endif + static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { @@ -3970,6 +3987,9 @@ static struct iommu_ops arm_smmu_ops = { .unmap = arm_smmu_unmap, .flush_iotlb_all = arm_smmu_flush_iotlb_all, .iotlb_sync = arm_smmu_iotlb_sync, +#ifdef CONFIG_HISILICON_ERRATUM_162100602 + .iotlb_sync_map = arm_smmu_iotlb_sync_map, +#endif .iova_to_phys = arm_smmu_iova_to_phys, .probe_device = arm_smmu_probe_device, .release_device = arm_smmu_release_device, -- 2.17.1

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[PATCH OLK-6.6 0/6] support userswap feature
by Peng Zhang 10 Dec '23

10 Dec '23

From: ZhangPeng <zhangpeng362(a)huawei.com> This patch series support userswap feature including registration, unregistration, swap-out and swap-in. Userswap feature depends on CONFIG_USERSWAP and can be enabled by cmdline enable_userswap. We tested the concurrent scenario of multi-threaded page fault and multi-threaded swap-in in the uswap demo;and the remapping in the swap-out phase and the copy-free function in the swap-in phase were ok. During the test, related debugging functions including CONFIG_DEBUG_VM, lockdep, slub debug, kasan and kmemleak are enabled. ZhangPeng (6): mm/userswap: add VM_USWAP and SWP_USERSWAP_ENTRY mm/userswap: add enable_userswap boot option mm/userswap: introduce MREMAP_USWAP_SET_PTE mm/userswap: support userswap via userfaultfd mm/userswap: introduce UFFDIO_COPY_MODE_DIRECT_MAP mm/userswap: provide cpu info in userfault msg fs/proc/task_mmu.c | 3 + fs/userfaultfd.c | 43 ++- include/linux/mm.h | 8 + include/linux/swap.h | 14 +- include/linux/swapops.h | 16 + include/linux/userfaultfd_k.h | 5 + include/linux/userswap.h | 60 ++++ include/trace/events/mmflags.h | 7 + include/uapi/linux/mman.h | 1 + include/uapi/linux/userfaultfd.h | 3 + mm/Kconfig | 10 + mm/Makefile | 1 + mm/memory.c | 8 + mm/mremap.c | 8 +- mm/userfaultfd.c | 12 + mm/userswap.c | 552 +++++++++++++++++++++++++++++++ 16 files changed, 745 insertions(+), 6 deletions(-) create mode 100644 include/linux/userswap.h create mode 100644 mm/userswap.c -- 2.25.1

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[PATCH OLK-6.6 0/6] support userswap feature
by Peng Zhang 10 Dec '23

10 Dec '23

From: ZhangPeng <zhangpeng362(a)huawei.com> This patch series support userswap feature including registration, unregistration, swap-out and swap-in. Userswap feature depends on CONFIG_USERSWAP and can be enabled by cmdline enable_userswap. We tested the concurrent scenario of multi-threaded page fault and multi-threaded swap-in in the uswap demo;and the remapping in the swap-out phase and the copy-free function in the swap-in phase were ok. During the test, related debugging functions including CONFIG_DEBUG_VM, lockdep, slub debug, kasan and kmemleak are enabled. ZhangPeng (6): mm/userswap: add VM_USWAP and SWP_USERSWAP_ENTRY mm/userswap: add enable_userswap boot option mm/userswap: introduce MREMAP_USWAP_SET_PTE mm/userswap: support userswap via userfaultfd mm/userswap: introduce UFFDIO_COPY_MODE_DIRECT_MAP mm/userswap: provide cpu info in userfault msg fs/proc/task_mmu.c | 3 + fs/userfaultfd.c | 43 ++- include/linux/mm.h | 8 + include/linux/swap.h | 14 +- include/linux/swapops.h | 16 + include/linux/userfaultfd_k.h | 5 + include/linux/userswap.h | 60 ++++ include/trace/events/mmflags.h | 7 + include/uapi/linux/mman.h | 1 + include/uapi/linux/userfaultfd.h | 3 + mm/Kconfig | 10 + mm/Makefile | 1 + mm/memory.c | 8 + mm/mremap.c | 8 +- mm/userfaultfd.c | 12 + mm/userswap.c | 552 +++++++++++++++++++++++++++++++ 16 files changed, 745 insertions(+), 6 deletions(-) create mode 100644 include/linux/userswap.h create mode 100644 mm/userswap.c -- 2.25.1

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[PATCH OLK-6.6 v2 0/8] memcg reclaim and cgroup kill
by Lu Jialin 09 Dec '23

09 Dec '23

Chen Wandun (1): memcg: introduce per-memcg reclaim interface for cgroup v1 Lu Jialin (7): cgroup: Export cgroup.kill from cgroupv2 to cgroupv1 memcg: Export memcg.{min/low} from cgroupv2 to cgroupv1 memcg: Export memcg.high from cgroupv2 to cgroupv1 memcg: Export memory.events{local} from cgroupv2 to cgroupv1 memcg: enable memcg async reclaim memcg: export high_async_ratio to userland config: enable CONFIG_MEMCG_V1_RECLAIM and CONFIG_CGROUP_V1_KILL arch/arm64/configs/openeuler_defconfig | 2 + arch/x86/configs/openeuler_defconfig | 2 + include/linux/memcontrol.h | 24 +- init/Kconfig | 10 + kernel/cgroup/cgroup-internal.h | 3 + kernel/cgroup/cgroup-v1.c | 7 + kernel/cgroup/cgroup.c | 4 +- mm/memcontrol.c | 471 +++++++++++++++++-------- 8 files changed, 369 insertions(+), 154 deletions(-) -- 2.34.1

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