diff --git a/drivers/base/node.c b/drivers/base/node.c index c3968e2d0a98..a6aeba4253cf 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -114,6 +114,9 @@ static ssize_t node_read_meminfo(struct device *dev, "Node %d AnonPages: %8lu kB\n" "Node %d Shmem: %8lu kB\n" "Node %d KernelStack: %8lu kB\n" +#ifdef CONFIG_SHADOW_CALL_STACK + "Node %d ShadowCallStack:%8lu kB\n" +#endif "Node %d PageTables: %8lu kB\n" "Node %d NFS_Unstable: %8lu kB\n" "Node %d Bounce: %8lu kB\n" @@ -134,6 +137,9 @@ static ssize_t node_read_meminfo(struct device *dev, nid, K(node_page_state(pgdat, NR_ANON_MAPPED)), nid, K(i.sharedram), nid, sum_zone_node_page_state(nid, NR_KERNEL_STACK_KB), +#ifdef CONFIG_SHADOW_CALL_STACK + nid, sum_zone_node_page_state(nid, NR_KERNEL_SCS_BYTES) / 1024, +#endif nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)), nid, K(node_page_state(pgdat, NR_UNSTABLE_NFS)), nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)), diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 172536c84817..56f4482c897a 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -104,6 +104,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v) global_node_page_state(NR_SLAB_UNRECLAIMABLE)); seq_printf(m, "KernelStack: %8lu kB\n", global_zone_page_state(NR_KERNEL_STACK_KB)); +#ifdef CONFIG_SHADOW_CALL_STACK + seq_printf(m, "ShadowCallStack:%8lu kB\n", + global_zone_page_state(NR_KERNEL_SCS_BYTES) / 1024); +#endif show_val_kb(m, "PageTables: ", global_zone_page_state(NR_PAGETABLE)); #ifdef CONFIG_QUICKLIST diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 4e46ff268cb1..bbdee2161004 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -142,6 +142,9 @@ enum zone_stat_item { NR_MLOCK, /* mlock()ed pages found and moved off LRU */ NR_PAGETABLE, /* used for pagetables */ NR_KERNEL_STACK_KB, /* measured in KiB */ +#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK) + NR_KERNEL_SCS_BYTES, /* measured in bytes */ +#endif /* Second 128 byte cacheline */ NR_BOUNCE, #if IS_ENABLED(CONFIG_ZSMALLOC) diff --git a/kernel/scs.c b/kernel/scs.c index 28abed21950c..5245e992c692 100644 --- a/kernel/scs.c +++ b/kernel/scs.c @@ -12,6 +12,7 @@ #include #include #include +#include #include static inline void *__scs_base(struct task_struct *tsk) @@ -89,6 +90,11 @@ static void scs_free(void *s) vfree_atomic(s); } +static struct page *__scs_page(struct task_struct *tsk) +{ + return vmalloc_to_page(__scs_base(tsk)); +} + static int scs_cleanup(unsigned int cpu) { int i; @@ -135,6 +141,11 @@ static inline void scs_free(void *s) kmem_cache_free(scs_cache, s); } +static struct page *__scs_page(struct task_struct *tsk) +{ + return virt_to_page(__scs_base(tsk)); +} + void __init scs_init(void) { scs_cache = kmem_cache_create("scs_cache", SCS_SIZE, SCS_SIZE, @@ -153,6 +164,12 @@ void scs_task_reset(struct task_struct *tsk) task_set_scs(tsk, __scs_base(tsk)); } +static void scs_account(struct task_struct *tsk, int account) +{ + mod_zone_page_state(page_zone(__scs_page(tsk)), NR_KERNEL_SCS_BYTES, + account * SCS_SIZE); +} + int scs_prepare(struct task_struct *tsk, int node) { void *s; @@ -162,6 +179,8 @@ int scs_prepare(struct task_struct *tsk, int node) return -ENOMEM; task_set_scs(tsk, s); + scs_account(tsk, 1); + return 0; } @@ -182,6 +201,7 @@ void scs_release(struct task_struct *tsk) WARN_ON(scs_corrupted(tsk)); + scs_account(tsk, -1); task_set_scs(tsk, NULL); scs_free(s); } diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 43f13adf8587..57160a595580 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5073,6 +5073,9 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) " managed:%lukB" " mlocked:%lukB" " kernel_stack:%lukB" +#ifdef CONFIG_SHADOW_CALL_STACK + " shadow_call_stack:%lukB" +#endif " pagetables:%lukB" " bounce:%lukB" " free_pcp:%lukB" @@ -5094,6 +5097,9 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) K(zone->managed_pages), K(zone_page_state(zone, NR_MLOCK)), zone_page_state(zone, NR_KERNEL_STACK_KB), +#ifdef CONFIG_SHADOW_CALL_STACK + zone_page_state(zone, NR_KERNEL_SCS_BYTES) / 1024, +#endif K(zone_page_state(zone, NR_PAGETABLE)), K(zone_page_state(zone, NR_BOUNCE)), K(free_pcp), diff --git a/mm/vmstat.c b/mm/vmstat.c index 27e40b4cc3b8..49225d4fd95b 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1117,6 +1117,9 @@ const char * const vmstat_text[] = { "nr_mlock", "nr_page_table_pages", "nr_kernel_stack", +#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK) + "nr_shadow_call_stack_bytes", +#endif "nr_bounce", #if IS_ENABLED(CONFIG_ZSMALLOC) "nr_zspages",