- Kernel - mailweb.openeuler.org

[PATCH V2 OLK-6.6 0/6] Add support for hisi HBM devices
by Zhang Zekun 14 Dec '23

14 Dec '23

Add support for HISI HBM device, and HBM ACLS repair. The patch set includes three functionalities. 1. Add support for hbm device hotplug. 2. provide extra information with hbm locality information 3. Add support for HBM acls repair. Zhang Zekun (6): ACPI: OSL: Export the symbol of acpi_hotplug_schedule soc: hisilicon: hisi_hbmdev: Add power domain control methods ACPI: memhotplug: export the state of each hotplug device soc: hisilicon: hisi_hbmdev: Provide extra memory topology information soc: hbmcache: Add support for online and offline the hbm cache soc: hisilicon: hisi_hbmdev: Add hbm acls repair and query methods drivers/acpi/acpi_memhotplug.c | 30 ++ drivers/acpi/internal.h | 1 - drivers/acpi/osl.c | 1 + drivers/base/container.c | 3 + drivers/soc/hisilicon/Kconfig | 36 +++ drivers/soc/hisilicon/Makefile | 3 + drivers/soc/hisilicon/hisi_hbmcache.c | 147 +++++++++ drivers/soc/hisilicon/hisi_hbmdev.c | 435 ++++++++++++++++++++++++++ drivers/soc/hisilicon/hisi_internal.h | 31 ++ include/linux/acpi.h | 1 + include/linux/memory_hotplug.h | 4 + 11 files changed, 691 insertions(+), 1 deletion(-) create mode 100644 drivers/soc/hisilicon/hisi_hbmcache.c create mode 100644 drivers/soc/hisilicon/hisi_hbmdev.c create mode 100644 drivers/soc/hisilicon/hisi_internal.h -- 2.17.1

3 9

[PATCH OLK-6.6] fs/dirty_pages: dump the number of dirty pages for each inode
by Zizhi Wo 14 Dec '23

14 Dec '23

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8OHM4?from=project-issue --------------------------- In order to analyse the IO performance when using buffer IO, it's useful to obtain the number of dirty pages for each inode in the filesystem. This feature depends on 'CONFIG_DIRTY_PAGES'. It creates 2 interfaces by using profs. /proc/dirty/page_threshold to filter result and /proc/dirty/dirty_list to get dirty pages. Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + fs/Kconfig | 13 ++ fs/Makefile | 1 + fs/dirty_pages.c | 275 +++++++++++++++++++++++++ 5 files changed, 291 insertions(+) create mode 100644 fs/dirty_pages.c diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 3781d138c3e3..ce101e7d8fcc 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -6881,6 +6881,7 @@ CONFIG_PROC_PAGE_MONITOR=y CONFIG_PROC_CHILDREN=y CONFIG_KERNFS=y CONFIG_SYSFS=y +CONFIG_DIRTY_PAGES=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_TMPFS_XATTR=y diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index e19bf53c0bd9..76b87ed62579 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -8088,6 +8088,7 @@ CONFIG_PROC_PID_ARCH_STATUS=y CONFIG_PROC_CPU_RESCTRL=y CONFIG_KERNFS=y CONFIG_SYSFS=y +CONFIG_DIRTY_PAGES=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_TMPFS_XATTR=y diff --git a/fs/Kconfig b/fs/Kconfig index aa7e03cc1941..a2280cf98729 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -170,6 +170,19 @@ source "fs/proc/Kconfig" source "fs/kernfs/Kconfig" source "fs/sysfs/Kconfig" +config DIRTY_PAGES + bool "Dumps the number of dirty pages of each file" + depends on PROC_FS + default y + help + This config supports the rendering of dirty page data to the user, + which may be useful to analyze the IO performance when using buffer + IO. + + It create 3 interfaces by using procfs. /proc/dirty/buffer_size for + buffer allocation and release; /proc/dirty/page_threshold to filter + result; /proc/dirty/dirty_list to get dirty pages. + config TMPFS bool "Tmpfs virtual memory file system support (former shm fs)" depends on SHMEM diff --git a/fs/Makefile b/fs/Makefile index f9541f40be4e..6246e173e1e4 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -44,6 +44,7 @@ obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o obj-$(CONFIG_NFS_COMMON) += nfs_common/ obj-$(CONFIG_COREDUMP) += coredump.o obj-$(CONFIG_SYSCTL) += drop_caches.o sysctls.o +obj-$(CONFIG_DIRTY_PAGES) += dirty_pages.o obj-$(CONFIG_FHANDLE) += fhandle.o obj-y += iomap/ diff --git a/fs/dirty_pages.c b/fs/dirty_pages.c new file mode 100644 index 000000000000..4edcba2bf1d0 --- /dev/null +++ b/fs/dirty_pages.c @@ -0,0 +1,275 @@ +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/uaccess.h> +#include <linux/pagemap.h> +#include <linux/pagevec.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/proc_fs.h> +#include <linux/kdev_t.h> +#include <linux/vmalloc.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include "internal.h" + +static int buff_limit; /* filter threshold of dirty pages*/ + +static struct proc_dir_entry *dirty_dir; + +/* proc root directory */ +#define DIRTY_ROOT "dirty" +/* proc file to obtain diry pages of each inode */ +#define DIRTY_PAGES "dirty_list" +/* proc file to filter result */ +#define DIRTY_LIMIT "page_threshold" + +static void seq_set_overflow(struct seq_file *m) +{ + m->count = m->size; +} + +static unsigned long dump_dirtypages_inode(struct inode *inode) +{ + struct folio_batch fbatch; + unsigned long nr_dirtys = 0; + unsigned int nr_folios; + pgoff_t index = 0; + + folio_batch_init(&fbatch); + + while (1) { + nr_folios = filemap_get_folios_tag(inode->i_mapping, &index, + (pgoff_t)-1, PAGECACHE_TAG_DIRTY, &fbatch); + if (!nr_folios) + break; + + folio_batch_release(&fbatch); + cond_resched(); + + nr_dirtys += nr_folios; + } + + return nr_dirtys; +} + +static char *inode_filename(struct inode *inode, char *tmpname) +{ + struct dentry *dentry; + char *filename; + + dentry = d_find_alias(inode); + if (!dentry) + return ERR_PTR(-ENOENT); + + tmpname[PATH_MAX-1] = '\0'; + filename = dentry_path_raw(dentry, tmpname, PATH_MAX); + + dput(dentry); + + return filename; +} + +static inline bool is_sb_writable(struct super_block *sb) +{ + if (sb_rdonly(sb)) + return false; + + if (sb->s_writers.frozen == SB_FREEZE_COMPLETE) + return false; + + return true; +} + +/* + * dump_dirtypages_sb - dump the dirty pages of each inode in the sb + * @sb the super block + * @m the seq_file witch is initialized in proc_dpages_open + * + * For each inode in the sb, call dump_dirtypages_pages to get the number + * of dirty pages. And use seq_printf to store the result in the buffer + * if it's not less than the threshold. The inode in unusual state will + * be skipped. + */ +static void dump_dirtypages_sb(struct super_block *sb, struct seq_file *m) +{ + struct inode *inode, *toput_inode = NULL; + unsigned long nr_dirtys; + const char *fstype; + char *filename; + char *tmpname; + int limit = READ_ONCE(buff_limit); + + if (!is_sb_writable(sb)) + return; + + tmpname = kmalloc(PATH_MAX, GFP_KERNEL); + if (!tmpname) + return; + + spin_lock(&sb->s_inode_list_lock); + list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { + spin_lock(&inode->i_lock); + + /* + * We must skip inodes in unusual state. We may also skip + * inodes without pages but we deliberately won't in case + * we need to reschedule to avoid softlockups. + */ + if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) || + (inode->i_mapping->nrpages == 0 && !need_resched())) { + spin_unlock(&inode->i_lock); + continue; + } + __iget(inode); + spin_unlock(&inode->i_lock); + spin_unlock(&sb->s_inode_list_lock); + + cond_resched(); + + nr_dirtys = dump_dirtypages_inode(inode); + if (!nr_dirtys || nr_dirtys < limit) + goto skip; + + filename = inode_filename(inode, tmpname); + if (IS_ERR_OR_NULL(filename)) + filename = "unknown"; + + if (sb->s_type && sb->s_type->name) + fstype = sb->s_type->name; + else + fstype = "unknown"; + /* + * seq_printf return nothing, if the buffer is exhausted + * (m->size <= m->count), seq_printf will not store + * anything, just set m->count = m->size and return. In + * that case, log a warn message in buffer to remind users. + */ + if (m->size <= m->count) { + seq_set_overflow(m); + strncpy(m->buf+m->count-12, "terminated\n\0", 12); + iput(inode); + goto done; + } + seq_printf(m, "FSType: %s, Dev ID: %u(%u:%u) ino %lu, dirty pages %lu, path %s\n", + fstype, sb->s_dev, MAJOR(sb->s_dev), + MINOR(sb->s_dev), inode->i_ino, + nr_dirtys, filename); +skip: + iput(toput_inode); + toput_inode = inode; + spin_lock(&sb->s_inode_list_lock); + } + spin_unlock(&sb->s_inode_list_lock); +done: + iput(toput_inode); + kfree(tmpname); +} + +static int proc_dpages_show(struct seq_file *m, void *v) +{ + iterate_supers((void *)dump_dirtypages_sb, (void *)m); + return 0; +} + +static int proc_dpages_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, proc_dpages_show, NULL); +} + +static const struct proc_ops proc_dpages_operations = { + .proc_open = proc_dpages_open, + .proc_read = seq_read, + .proc_release = single_release, +}; + +static int proc_limit_show(struct seq_file *m, void *v) +{ + seq_printf(m, "%d\n", READ_ONCE(buff_limit)); + return 0; +} + +static int proc_limit_open(struct inode *inode, struct file *filp) +{ + return single_open(filp, proc_limit_show, NULL); +} + +static ssize_t write_limit_proc( + struct file *filp, + const char *buf, + size_t count, + loff_t *offp) +{ + char *msg; + int ret = 0; + long temp; + + if (count > PAGE_SIZE) { + ret = -EINVAL; + goto error; + } + + msg = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!msg) { + ret = -ENOMEM; + goto error; + } + + if (copy_from_user(msg, buf, count)) { + ret = -EINVAL; + goto free; + } + ret = kstrtol(msg, 10, &temp); + if (ret != 0 || temp < 0 || temp > INT_MAX) { + ret = -EINVAL; + goto free; + } + + WRITE_ONCE(buff_limit, temp); + ret = count; + +free: + kfree(msg); +error: + return ret; +} + +static const struct proc_ops proc_limit_operations = { + .proc_open = proc_limit_open, + .proc_read = seq_read, + .proc_write = write_limit_proc, + .proc_lseek = seq_lseek, + .proc_release = single_release, +}; + +static int __init dpages_proc_init(void) +{ + static struct proc_dir_entry *proc_file; + + dirty_dir = proc_mkdir(DIRTY_ROOT, NULL); + if (!dirty_dir) + goto fail_dir; + + proc_file = proc_create(DIRTY_PAGES, 0440, + dirty_dir, &proc_dpages_operations); + if (!proc_file) + goto fail_pages; + + proc_file = proc_create(DIRTY_LIMIT, 0640, + dirty_dir, &proc_limit_operations); + if (!proc_file) + goto fail_limit; + + return 0; + +fail_limit: + remove_proc_entry(DIRTY_PAGES, dirty_dir); +fail_pages: + remove_proc_entry(DIRTY_ROOT, NULL); +fail_dir: + return -ENOMEM; +} + +subsys_initcall(dpages_proc_init); -- 2.39.2

2 1

[PATCH OLK-6.6 0/2] sync pin memory and pid reserve's code from
by Liu Chao 14 Dec '23

14 Dec '23

euleros inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8NXQM ------------------------------ Liu Chao (2): mm: add pin memory method for checkpoint add restore pid: add pid reserve method for checkpoint and recover arch/arm64/configs/openeuler_defconfig | 3 + arch/arm64/kernel/setup.c | 2 + arch/arm64/mm/init.c | 6 + drivers/char/Kconfig | 7 + drivers/char/Makefile | 1 + drivers/char/pin_memory.c | 209 +++++ fs/proc/task_mmu.c | 136 +++ include/linux/page-flags.h | 9 + include/linux/pin_mem.h | 117 +++ include/trace/events/mmflags.h | 9 +- kernel/pid.c | 4 + mm/Kconfig | 19 + mm/Makefile | 1 + mm/huge_memory.c | 64 ++ mm/memory.c | 59 ++ mm/pin_mem.c | 1194 ++++++++++++++++++++++++ mm/rmap.c | 3 +- 17 files changed, 1841 insertions(+), 2 deletions(-) create mode 100644 drivers/char/pin_memory.c create mode 100644 include/linux/pin_mem.h create mode 100644 mm/pin_mem.c -- 2.33.0

2 3

[PATCH OLK-6.6] ACPI / APEI: Notify all ras err to driver
by Yuan Can 14 Dec '23

14 Dec '23

From: Weilong Chen <chenweilong(a)huawei.com> ascend inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8NC0E CVE: NA ------------------------------------------------- Customization deliver all types error to driver. As the driver need to process the errors in process context. Signed-off-by: Weilong Chen <chenweilong(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + drivers/acpi/apei/Kconfig | 7 +++++++ drivers/acpi/apei/ghes.c | 8 +++++++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 3781d138c3e3..5775069d6844 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -653,6 +653,7 @@ CONFIG_ACPI_HMAT=y CONFIG_HAVE_ACPI_APEI=y CONFIG_ACPI_APEI=y CONFIG_ACPI_APEI_GHES=y +CONFIG_ACPI_APEI_GHES_NOTIFY_ALL_RAS_ERR=y CONFIG_ACPI_APEI_PCIEAER=y CONFIG_ACPI_APEI_SEA=y CONFIG_ACPI_APEI_MEMORY_FAILURE=y diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index 6b18f8bc7be3..1dce3ad7c9bd 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -33,6 +33,13 @@ config ACPI_APEI_GHES by firmware to produce more valuable hardware error information for Linux. +config ACPI_APEI_GHES_NOTIFY_ALL_RAS_ERR + bool "Notify all ras err to driver" + depends on ARM64 && ACPI_APEI_GHES + default n + help + Deliver all types of error to driver. + config ACPI_APEI_PCIEAER bool "APEI PCIe AER logging/recovering support" depends on ACPI_APEI && PCIEAER diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 63ad0541db38..bf1b9252a8da 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -692,12 +692,18 @@ static bool ghes_do_proc(struct ghes *ghes, queued = ghes_handle_arm_hw_error(gdata, sev); } else { void *err = acpi_hest_get_payload(gdata); - +#ifndef CONFIG_ACPI_APEI_GHES_NOTIFY_ALL_RAS_ERR ghes_defer_non_standard_event(gdata, sev); +#endif log_non_standard_event(sec_type, fru_id, fru_text, sec_sev, err, gdata->error_data_length); } + +#ifdef CONFIG_ACPI_APEI_GHES_NOTIFY_ALL_RAS_ERR + /* Customization deliver all types error to driver. */ + ghes_defer_non_standard_event(gdata, sev); +#endif } return queued; -- 2.17.1

2 1

[PATCH OLK-6.6 v2 0/4] xfs: fix some growfs problems
by Long Li 14 Dec '23

14 Dec '23

This patch set fix some growfs problems: Long Li (1): xfs: fix dir3 block read verify fail during log recover Wu Guanghao (1): xfs: fix the problem of mount failure caused by not refreshing mp->m_sb yangerkun (2): xfs: fix mounting failed caused by sequencing problem in the log records xfs: keep growfs sb log item active until ail flush success fs/xfs/libxfs/xfs_log_recover.h | 1 + fs/xfs/xfs_buf_item.c | 2 +- fs/xfs/xfs_buf_item.h | 8 +++++++- fs/xfs/xfs_buf_item_recover.c | 36 +++++++++++++++++++++++++++------ fs/xfs/xfs_log_recover.c | 26 +++++++++++++++++++++--- fs/xfs/xfs_trans.c | 8 ++++++++ 6 files changed, 70 insertions(+), 11 deletions(-) -- 2.31.1

2 5

[PATCH OLK-6.6 0/4] xfs: fix some growfs problems
by Long Li 14 Dec '23

14 Dec '23

This patch set fix some growfs problems: Long Li (1): xfs: fix dir3 block read verify fail during log recover Wu Guanghao (1): xfs: fix the problem of mount failure caused by not refreshing mp->m_sb yangerkun (2): xfs: fix mounting failed caused by sequencing problem in the log records xfs: keep growfs sb log item active until ail flush success fs/xfs/libxfs/xfs_log_recover.h | 1 + fs/xfs/xfs_buf_item.c | 2 +- fs/xfs/xfs_buf_item.h | 8 +++++++- fs/xfs/xfs_buf_item_recover.c | 36 +++++++++++++++++++++++++++------ fs/xfs/xfs_log_recover.c | 26 +++++++++++++++++++++--- fs/xfs/xfs_trans.c | 8 ++++++++ 6 files changed, 70 insertions(+), 11 deletions(-) -- 2.31.1

2 5

[PATCH OLK-6.6 0/2] Ascend feature
by Yuan Can 14 Dec '23

14 Dec '23

Ascend init all gicr feature. Xu Qiang (2): irq-gic-v3: Add support to init ts core GICR irq-gic-v3-its: It can't be initialized when the GICR had been cut drivers/irqchip/Kconfig | 7 + drivers/irqchip/irq-gic-v3-its.c | 254 ++++++++++++++++++++++++++++- drivers/irqchip/irq-gic-v3.c | 101 +++++++++++- include/linux/irqchip/arm-gic-v3.h | 5 + 4 files changed, 359 insertions(+), 8 deletions(-) -- 2.17.1

2 3

[PATCH OLK-6.6 1/2] irq-gic-v3: Add support to init ts core GICR
by Yuan Can 14 Dec '23

14 Dec '23

From: Xu Qiang <xuqiang36(a)huawei.com> ascend inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8NC0E CVE: NA ------------ For Ascend platform, other NON-OS managed GICRs need be initialized in OS. Signed-off-by: Xu Qiang <xuqiang36(a)huawei.com> --- drivers/irqchip/Kconfig | 7 + drivers/irqchip/irq-gic-v3-its.c | 227 ++++++++++++++++++++++++++++- drivers/irqchip/irq-gic-v3.c | 101 ++++++++++++- include/linux/irqchip/arm-gic-v3.h | 5 + 4 files changed, 332 insertions(+), 8 deletions(-) diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index f7149d0f3d45..3ba9ed9e1be1 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -159,6 +159,13 @@ config HISILICON_IRQ_MBIGEN select ARM_GIC_V3 select ARM_GIC_V3_ITS +config ASCEND_INIT_ALL_GICR + bool "Enable init all GICR for Ascend" + depends on ASCEND_FEATURES + depends on ARM_GIC_V3 + depends on ARM_GIC_V3_ITS + default n + config IMGPDC_IRQ bool select GENERIC_IRQ_CHIP diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index a8c89df1a997..b7c5bbd209f3 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -193,6 +193,14 @@ static DEFINE_RAW_SPINLOCK(vmovp_lock); static DEFINE_IDA(its_vpeid_ida); +#ifdef CONFIG_ASCEND_INIT_ALL_GICR +static bool init_all_gicr; +static int nr_gicr; +#else +#define init_all_gicr false +#define nr_gicr 0 +#endif + #define gic_data_rdist() (raw_cpu_ptr(gic_rdists->rdist)) #define gic_data_rdist_cpu(cpu) (per_cpu_ptr(gic_rdists->rdist, cpu)) #define gic_data_rdist_rd_base() (gic_data_rdist()->rd_base) @@ -1558,6 +1566,11 @@ static __maybe_unused u32 its_read_lpi_count(struct irq_data *d, int cpu) static void its_inc_lpi_count(struct irq_data *d, int cpu) { +#ifdef CONFIG_ASCEND_INIT_ALL_GICR + if (cpu >= nr_cpu_ids) + return; +#endif + if (irqd_affinity_is_managed(d)) atomic_inc(&per_cpu_ptr(&cpu_lpi_count, cpu)->managed); else @@ -1566,6 +1579,11 @@ static void its_inc_lpi_count(struct irq_data *d, int cpu) static void its_dec_lpi_count(struct irq_data *d, int cpu) { +#ifdef CONFIG_ASCEND_INIT_ALL_GICR + if (cpu >= nr_cpu_ids) + return; +#endif + if (irqd_affinity_is_managed(d)) atomic_dec(&per_cpu_ptr(&cpu_lpi_count, cpu)->managed); else @@ -1665,6 +1683,26 @@ static int its_select_cpu(struct irq_data *d, return cpu; } +#ifdef CONFIG_ASCEND_INIT_ALL_GICR +static int its_select_cpu_other(const struct cpumask *mask_val) +{ + int cpu; + + if (!init_all_gicr) + return -EINVAL; + + cpu = find_first_bit(cpumask_bits(mask_val), NR_CPUS); + if (cpu >= nr_gicr) + cpu = -EINVAL; + return cpu; +} +#else +static int its_select_cpu_other(const struct cpumask *mask_val) +{ + return -EINVAL; +} +#endif + static int its_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bool force) { @@ -1686,6 +1724,9 @@ static int its_set_affinity(struct irq_data *d, const struct cpumask *mask_val, cpu = cpumask_pick_least_loaded(d, mask_val); if (cpu < 0 || cpu >= nr_cpu_ids) + cpu = its_select_cpu_other(mask_val); + + if (cpu < 0) goto err; /* don't set the affinity when the target cpu is same as current one */ @@ -2951,8 +2992,12 @@ static int allocate_vpe_l1_table(void) static int its_alloc_collections(struct its_node *its) { int i; + int cpu_nr = nr_cpu_ids; + + if (init_all_gicr) + cpu_nr = CONFIG_NR_CPUS; - its->collections = kcalloc(nr_cpu_ids, sizeof(*its->collections), + its->collections = kcalloc(cpu_nr, sizeof(*its->collections), GFP_KERNEL); if (!its->collections) return -ENOMEM; @@ -3263,6 +3308,186 @@ static void its_cpu_init_collections(void) raw_spin_unlock(&its_lock); } +#ifdef CONFIG_ASCEND_INIT_ALL_GICR +void its_set_gicr_nr(int nr) +{ + nr_gicr = nr; +} + +static int __init its_enable_init_all_gicr(char *str) +{ + init_all_gicr = true; + return 1; +} + +__setup("init_all_gicr", its_enable_init_all_gicr); + +bool its_init_all_gicr(void) +{ + return init_all_gicr; +} + +static void its_cpu_init_lpis_others(void __iomem *rbase, int cpu) +{ + struct page *pend_page; + phys_addr_t paddr; + u64 val, tmp; + + if (!init_all_gicr) + return; + + val = readl_relaxed(rbase + GICR_CTLR); + if ((gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED) && + (val & GICR_CTLR_ENABLE_LPIS)) { + /* + * Check that we get the same property table on all + * RDs. If we don't, this is hopeless. + */ + paddr = gicr_read_propbaser(rbase + GICR_PROPBASER); + paddr &= GENMASK_ULL(51, 12); + if (WARN_ON(gic_rdists->prop_table_pa != paddr)) + add_taint(TAINT_CRAP, LOCKDEP_STILL_OK); + + paddr = gicr_read_pendbaser(rbase + GICR_PENDBASER); + paddr &= GENMASK_ULL(51, 16); + + WARN_ON(!gic_check_reserved_range(paddr, LPI_PENDBASE_SZ)); + + goto out; + } + + /* If we didn't allocate the pending table yet, do it now */ + pend_page = its_allocate_pending_table(GFP_NOWAIT); + if (!pend_page) { + pr_err("Failed to allocate PENDBASE for GICR:%p\n", rbase); + return; + } + + paddr = page_to_phys(pend_page); + pr_info("GICR:%p using LPI pending table @%pa\n", + rbase, &paddr); + + WARN_ON(gic_reserve_range(paddr, LPI_PENDBASE_SZ)); + + /* Disable LPIs */ + val = readl_relaxed(rbase + GICR_CTLR); + val &= ~GICR_CTLR_ENABLE_LPIS; + writel_relaxed(val, rbase + GICR_CTLR); + + /* + * Make sure any change to the table is observable by the GIC. + */ + dsb(sy); + + /* set PROPBASE */ + val = (gic_rdists->prop_table_pa | + GICR_PROPBASER_InnerShareable | + GICR_PROPBASER_RaWaWb | + ((LPI_NRBITS - 1) & GICR_PROPBASER_IDBITS_MASK)); + + gicr_write_propbaser(val, rbase + GICR_PROPBASER); + tmp = gicr_read_propbaser(rbase + GICR_PROPBASER); + + if ((tmp ^ val) & GICR_PROPBASER_SHAREABILITY_MASK) { + if (!(tmp & GICR_PROPBASER_SHAREABILITY_MASK)) { + /* + * The HW reports non-shareable, we must + * remove the cacheability attributes as + * well. + */ + val &= ~(GICR_PROPBASER_SHAREABILITY_MASK | + GICR_PROPBASER_CACHEABILITY_MASK); + val |= GICR_PROPBASER_nC; + gicr_write_propbaser(val, rbase + GICR_PROPBASER); + } + pr_info_once("GIC: using cache flushing for LPI property table\n"); + gic_rdists->flags |= RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING; + } + + /* set PENDBASE */ + val = (page_to_phys(pend_page) | + GICR_PENDBASER_InnerShareable | + GICR_PENDBASER_RaWaWb); + + gicr_write_pendbaser(val, rbase + GICR_PENDBASER); + tmp = gicr_read_pendbaser(rbase + GICR_PENDBASER); + + if (!(tmp & GICR_PENDBASER_SHAREABILITY_MASK)) { + /* + * The HW reports non-shareable, we must remove the + * cacheability attributes as well. + */ + val &= ~(GICR_PENDBASER_SHAREABILITY_MASK | + GICR_PENDBASER_CACHEABILITY_MASK); + val |= GICR_PENDBASER_nC; + gicr_write_pendbaser(val, rbase + GICR_PENDBASER); + } + + /* Enable LPIs */ + val = readl_relaxed(rbase + GICR_CTLR); + val |= GICR_CTLR_ENABLE_LPIS; + writel_relaxed(val, rbase + GICR_CTLR); + + /* Make sure the GIC has seen the above */ + dsb(sy); +out: + pr_info("GICv3: CPU%d: using %s LPI pending table @%pa\n", + cpu, pend_page ? "allocated" : "reserved", &paddr); +} + +static void its_cpu_init_collection_others(void __iomem *rbase, + phys_addr_t phys_base, int cpu) +{ + struct its_node *its; + + if (!init_all_gicr) + return; + + raw_spin_lock(&its_lock); + + list_for_each_entry(its, &its_nodes, entry) { + u64 target; + + /* + * We now have to bind each collection to its target + * redistributor. + */ + if (gic_read_typer(its->base + GITS_TYPER) & GITS_TYPER_PTA) { + /* + * This ITS wants the physical address of the + * redistributor. + */ + target = phys_base; + } else { + /* + * This ITS wants a linear CPU number. + */ + target = gic_read_typer(rbase + GICR_TYPER); + target = GICR_TYPER_CPU_NUMBER(target) << 16; + } + + /* Perform collection mapping */ + its->collections[cpu].target_address = target; + its->collections[cpu].col_id = cpu; + + its_send_mapc(its, &its->collections[cpu], 1); + its_send_invall(its, &its->collections[cpu]); + } + + raw_spin_unlock(&its_lock); +} + +int its_cpu_init_others(void __iomem *base, phys_addr_t phys_base, int cpu) +{ + if (!list_empty(&its_nodes)) { + its_cpu_init_lpis_others(base, cpu); + its_cpu_init_collection_others(base, phys_base, cpu); + } + + return 0; +} +#endif + static struct its_device *its_find_device(struct its_node *its, u32 dev_id) { struct its_device *its_dev = NULL, *tmp; diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index f59ac9586b7b..59d5c736be81 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -281,17 +281,11 @@ static u64 __maybe_unused gic_read_iar(void) } #endif -static void gic_enable_redist(bool enable) +static void __gic_enable_redist(void __iomem *rbase, bool enable) { - void __iomem *rbase; u32 count = 1000000; /* 1s! */ u32 val; - if (gic_data.flags & FLAGS_WORKAROUND_GICR_WAKER_MSM8996) - return; - - rbase = gic_data_rdist_rd_base(); - val = readl_relaxed(rbase + GICR_WAKER); if (enable) /* Wake up this CPU redistributor */ @@ -318,6 +312,14 @@ static void gic_enable_redist(bool enable) enable ? "wakeup" : "sleep"); } +static void gic_enable_redist(bool enable) +{ + if (gic_data.flags & FLAGS_WORKAROUND_GICR_WAKER_MSM8996) + return; + + __gic_enable_redist(gic_data_rdist_rd_base(), enable); +} + /* * Routines to disable, enable, EOI and route interrupts */ @@ -1288,6 +1290,89 @@ static void gic_cpu_init(void) gic_cpu_sys_reg_init(); } +#ifdef CONFIG_ASCEND_INIT_ALL_GICR +static int __gic_compute_nr_gicr(struct redist_region *region, void __iomem *ptr) +{ + static int gicr_nr; + + its_set_gicr_nr(++gicr_nr); + + return 1; +} + +static void gic_compute_nr_gicr(void) +{ + gic_iterate_rdists(__gic_compute_nr_gicr); +} + +static int gic_rdist_cpu(void __iomem *ptr, unsigned int cpu) +{ + unsigned long mpidr = cpu_logical_map(cpu); + u64 typer; + u32 aff; + + /* + * Convert affinity to a 32bit value that can be matched to + * GICR_TYPER bits [63:32]. + */ + aff = (MPIDR_AFFINITY_LEVEL(mpidr, 3) << 24 | + MPIDR_AFFINITY_LEVEL(mpidr, 2) << 16 | + MPIDR_AFFINITY_LEVEL(mpidr, 1) << 8 | + MPIDR_AFFINITY_LEVEL(mpidr, 0)); + + typer = gic_read_typer(ptr + GICR_TYPER); + if ((typer >> 32) == aff) + return 0; + + return 1; +} + +static int gic_rdist_cpus(void __iomem *ptr) +{ + unsigned int i; + + for (i = 0; i < nr_cpu_ids; i++) { + if (gic_rdist_cpu(ptr, i) == 0) + return 0; + } + + return 1; +} + +static int gic_cpu_init_other(struct redist_region *region, void __iomem *ptr) +{ + u64 offset; + phys_addr_t phys_base; + static int cpu; + + if (cpu == 0) + cpu = nr_cpu_ids; + + if (gic_rdist_cpus(ptr) == 1) { + offset = ptr - region->redist_base; + phys_base = region->phys_base + offset; + __gic_enable_redist(ptr, true); + if (gic_dist_supports_lpis()) + its_cpu_init_others(ptr, phys_base, cpu); + cpu++; + } + + return 1; +} + +static void gic_cpu_init_others(void) +{ + if (!its_init_all_gicr()) + return; + + gic_iterate_rdists(gic_cpu_init_other); +} +#else +static inline void gic_compute_nr_gicr(void) {} + +static inline void gic_cpu_init_others(void) {} +#endif + #ifdef CONFIG_SMP #define MPIDR_TO_SGI_RS(mpidr) (MPIDR_RS(mpidr) << ICC_SGI1R_RS_SHIFT) @@ -2052,6 +2137,7 @@ static int __init gic_init_bases(phys_addr_t dist_phys_base, gic_data.rdists.has_direct_lpi = true; gic_data.rdists.has_vpend_valid_dirty = true; } + gic_compute_nr_gicr(); if (WARN_ON(!gic_data.domain) || WARN_ON(!gic_data.rdists.rdist)) { err = -ENOMEM; @@ -2087,6 +2173,7 @@ static int __init gic_init_bases(phys_addr_t dist_phys_base, } gic_enable_nmi_support(); + gic_cpu_init_others(); return 0; diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 728691365464..33e098c70952 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -637,6 +637,11 @@ struct irq_domain; struct fwnode_handle; int __init its_lpi_memreserve_init(void); int its_cpu_init(void); +#ifdef CONFIG_ASCEND_INIT_ALL_GICR +void its_set_gicr_nr(int nr); +bool its_init_all_gicr(void); +int its_cpu_init_others(void __iomem *base, phys_addr_t phys_base, int idx); +#endif int its_init(struct fwnode_handle *handle, struct rdists *rdists, struct irq_domain *domain); int mbi_init(struct fwnode_handle *fwnode, struct irq_domain *parent); -- 2.17.1

2 3

[PATCH OLK-6.6] arm64/ascend: Add new enable_oom_killer interface for oom contrl
by Yuan Can 14 Dec '23

14 Dec '23

From: Weilong Chen <chenweilong(a)huawei.com> ascend inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8NC0E CVE: NA ------------------------------------------------- Support disable oom-killer, and report oom events to bbox vm.enable_oom_killer: 0: disable oom killer 1: enable oom killer (default,compatible with mainline) Signed-off-by: Weilong Chen <chenweilong(a)huawei.com> --- include/linux/oom.h | 24 +++++++++++++++++++ mm/Kconfig | 10 ++++++++ mm/memcontrol.c | 20 ++++++++++++++++ mm/oom_kill.c | 57 +++++++++++++++++++++++++++++++++++++++++++++ mm/util.c | 2 ++ 5 files changed, 113 insertions(+) diff --git a/include/linux/oom.h b/include/linux/oom.h index 7d0c9c48a0c5..b9210e272651 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -112,4 +112,28 @@ extern void oom_killer_enable(void); extern struct task_struct *find_lock_task_mm(struct task_struct *p); +#define OOM_TYPE_NOMEM 0 +#define OOM_TYPE_OVERCOMMIT 1 +#define OOM_TYPE_CGROUP 2 + +#ifdef CONFIG_ASCEND_OOM +int register_hisi_oom_notifier(struct notifier_block *nb); +int unregister_hisi_oom_notifier(struct notifier_block *nb); +int oom_type_notifier_call(unsigned int type, struct oom_control *oc); +#else +static inline int register_hisi_oom_notifier(struct notifier_block *nb) +{ + return -EINVAL; +} + +static inline int unregister_hisi_oom_notifier(struct notifier_block *nb) +{ + return -EINVAL; +} + +static inline int oom_type_notifier_call(unsigned int type, struct oom_control *oc) +{ + return -EINVAL; +} +#endif #endif /* _INCLUDE_LINUX_OOM_H */ diff --git a/mm/Kconfig b/mm/Kconfig index 0f68e5bbeb89..48f4aeeaeff9 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1302,6 +1302,16 @@ config SHARE_POOL in kernel and user level, which is only enabled for ascend platform. To enable this feature, enable_ascend_share_pool bootarg is needed. +config ASCEND_OOM + bool "Enable support for disable oom killer" + default n + help + In some cases we hopes that the oom will not kill the process when it occurs, + be able to notify the black box to report the event, and be able to trigger + the panic to locate the problem. + vm.enable_oom_killer: + 0: disable oom killer + 1: enable oom killer (default,compatible with mainline) source "mm/damon/Kconfig" diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 8a881ab21f6c..fec6f37e61da 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1955,6 +1955,7 @@ static bool mem_cgroup_oom(struct mem_cgroup *memcg, gfp_t mask, int order) current->memcg_in_oom = memcg; current->memcg_oom_gfp_mask = mask; current->memcg_oom_order = order; + oom_type_notifier_call(OOM_TYPE_CGROUP, NULL); } return false; } @@ -2019,6 +2020,8 @@ bool mem_cgroup_oom_synchronize(bool handle) if (locked) mem_cgroup_oom_notify(memcg); + oom_type_notifier_call(OOM_TYPE_CGROUP, NULL); + schedule(); mem_cgroup_unmark_under_oom(memcg); finish_wait(&memcg_oom_waitq, &owait.wait); @@ -3140,6 +3143,20 @@ int __memcg_kmem_charge_page(struct page *page, gfp_t gfp, int order) return ret; } +#ifdef CONFIG_ASCEND_OOM +void hisi_oom_recover(struct obj_cgroup *objcg) +{ + struct mem_cgroup *memcg; + + memcg = get_mem_cgroup_from_objcg(objcg); + if (!mem_cgroup_is_root(memcg)) + memcg_oom_recover(memcg); + css_put(&memcg->css); +} +#else +static inline void hisi_oom_recover(struct obj_cgroup *objcg) { } +#endif + /** * __memcg_kmem_uncharge_page: uncharge a kmem page * @page: page to uncharge @@ -3156,6 +3173,9 @@ void __memcg_kmem_uncharge_page(struct page *page, int order) objcg = __folio_objcg(folio); obj_cgroup_uncharge_pages(objcg, nr_pages); + + hisi_oom_recover(objcg); + folio->memcg_data = 0; obj_cgroup_put(objcg); } diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 44bde56ecd02..607056d49595 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -55,6 +55,7 @@ static int sysctl_panic_on_oom; static int sysctl_oom_kill_allocating_task; static int sysctl_oom_dump_tasks = 1; +static int sysctl_enable_oom_killer = 1; /* * Serializes oom killer invocations (out_of_memory()) from all contexts to @@ -724,6 +725,17 @@ static struct ctl_table vm_oom_kill_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, +#ifdef CONFIG_ASCEND_OOM + { + .procname = "enable_oom_killer", + .data = &sysctl_enable_oom_killer, + .maxlen = sizeof(sysctl_enable_oom_killer), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }, +#endif {} }; #endif @@ -1073,6 +1085,7 @@ static void check_panic_on_oom(struct oom_control *oc) if (is_sysrq_oom(oc)) return; dump_header(oc, NULL); + oom_type_notifier_call(0, oc); panic("Out of memory: %s panic_on_oom is enabled\n", sysctl_panic_on_oom == 2 ? "compulsory" : "system-wide"); } @@ -1091,6 +1104,45 @@ int unregister_oom_notifier(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(unregister_oom_notifier); +#ifdef CONFIG_ASCEND_OOM +static BLOCKING_NOTIFIER_HEAD(oom_type_notify_list); + +int register_hisi_oom_notifier(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&oom_type_notify_list, nb); +} +EXPORT_SYMBOL_GPL(register_hisi_oom_notifier); + +int unregister_hisi_oom_notifier(struct notifier_block *nb) +{ + return blocking_notifier_chain_unregister(&oom_type_notify_list, nb); +} +EXPORT_SYMBOL_GPL(unregister_hisi_oom_notifier); + +int oom_type_notifier_call(unsigned int type, struct oom_control *oc) +{ + struct oom_control oc_tmp = { 0 }; + static unsigned long caller_jiffies; + + if (sysctl_enable_oom_killer) + return -EINVAL; + + if (oc) + type = is_memcg_oom(oc) ? OOM_TYPE_CGROUP : OOM_TYPE_NOMEM; + else + oc = &oc_tmp; + + if (printk_timed_ratelimit(&caller_jiffies, 10000)) { + pr_err("OOM_NOTIFIER: oom type %u\n", type); + dump_stack(); + show_mem(); + dump_tasks(oc); + } + + return blocking_notifier_call_chain(&oom_type_notify_list, type, NULL); +} +#endif + /** * out_of_memory - kill the "best" process when we run out of memory * @oc: pointer to struct oom_control @@ -1107,6 +1159,11 @@ bool out_of_memory(struct oom_control *oc) if (oom_killer_disabled) return false; + if (!sysctl_enable_oom_killer) { + oom_type_notifier_call(0, oc); + return false; + } + if (!is_memcg_oom(oc)) { blocking_notifier_call_chain(&oom_notify_list, 0, &freed); if (freed > 0 && !is_sysrq_oom(oc)) diff --git a/mm/util.c b/mm/util.c index 90250cbc82fe..e41ac8a58eb5 100644 --- a/mm/util.c +++ b/mm/util.c @@ -26,6 +26,7 @@ #include <linux/share_pool.h> #include <linux/uaccess.h> +#include <linux/oom.h> #include "internal.h" #include "swap.h" @@ -981,6 +982,7 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) error: pr_warn_ratelimited("%s: pid: %d, comm: %s, not enough memory for the allocation\n", __func__, current->pid, current->comm); + oom_type_notifier_call(OOM_TYPE_OVERCOMMIT, NULL); vm_unacct_memory(pages); return -ENOMEM; -- 2.17.1

2 1

[PATCH OLK-6.6] nbd_genl_status: null check for nla_nest_start
by Yuan Can 14 Dec '23

14 Dec '23

From: Navid Emamdoost <navid.emamdoost(a)gmail.com> maillist inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8NC0E CVE: CVE-2019-16089 Reference: https://lore.kernel.org/lkml/20190911164013.27364-1-navid.emamdoost@gmail.c… --------------------------- nla_nest_start may fail and return NULL. The check is inserted, and errno is selected based on other call sites within the same source code. Update: removed extra new line. v3 Update: added release reply, thanks to Michal Kubecek for pointing out. Signed-off-by: Navid Emamdoost <navid.emamdoost(a)gmail.com> Reviewed-by: Michal Kubecek <mkubecek(a)suse.cz> --- drivers/block/nbd.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 855fdf5c3b4e..b99c169890d5 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -2408,6 +2408,12 @@ static int nbd_genl_status(struct sk_buff *skb, struct genl_info *info) } dev_list = nla_nest_start_noflag(reply, NBD_ATTR_DEVICE_LIST); + if (!dev_list) { + nlmsg_free(reply); + ret = -EMSGSIZE; + goto out; + } + if (index == -1) { ret = idr_for_each(&nbd_index_idr, &status_cb, reply); if (ret) { -- 2.17.1

2 1