diff options
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/Kconfig | 6 | ||||
| -rw-r--r-- | fs/proc/base.c | 4 | ||||
| -rw-r--r-- | fs/proc/consoles.c | 4 | ||||
| -rw-r--r-- | fs/proc/meminfo.c | 14 | ||||
| -rw-r--r-- | fs/proc/page.c | 14 | ||||
| -rw-r--r-- | fs/proc/task_mmu.c | 7 |
6 files changed, 34 insertions, 15 deletions
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig index 6a0068841d96..15af6222f8a4 100644 --- a/fs/proc/Kconfig +++ b/fs/proc/Kconfig @@ -1,5 +1,5 @@ config PROC_FS - bool "/proc file system support" if EMBEDDED + bool "/proc file system support" if EXPERT default y help This is a virtual file system providing information about the status @@ -40,7 +40,7 @@ config PROC_VMCORE Exports the dump image of crashed kernel in ELF format. config PROC_SYSCTL - bool "Sysctl support (/proc/sys)" if EMBEDDED + bool "Sysctl support (/proc/sys)" if EXPERT depends on PROC_FS select SYSCTL default y @@ -61,7 +61,7 @@ config PROC_SYSCTL config PROC_PAGE_MONITOR default y depends on PROC_FS && MMU - bool "Enable /proc page monitoring" if EMBEDDED + bool "Enable /proc page monitoring" if EXPERT help Various /proc files exist to monitor process memory utilization: /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap, diff --git a/fs/proc/base.c b/fs/proc/base.c index 93f1cdd5d3d7..9d096e82b201 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1151,7 +1151,7 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf, goto err_task_lock; } - if (oom_score_adj < task->signal->oom_score_adj && + if (oom_score_adj < task->signal->oom_score_adj_min && !capable(CAP_SYS_RESOURCE)) { err = -EACCES; goto err_sighand; @@ -1164,6 +1164,8 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf, atomic_dec(&task->mm->oom_disable_count); } task->signal->oom_score_adj = oom_score_adj; + if (has_capability_noaudit(current, CAP_SYS_RESOURCE)) + task->signal->oom_score_adj_min = oom_score_adj; /* * Scale /proc/pid/oom_adj appropriately ensuring that OOM_DISABLE is * always attainable. diff --git a/fs/proc/consoles.c b/fs/proc/consoles.c index eafc22ab1fdd..b701eaa482bf 100644 --- a/fs/proc/consoles.c +++ b/fs/proc/consoles.c @@ -67,7 +67,7 @@ static void *c_start(struct seq_file *m, loff_t *pos) struct console *con; loff_t off = 0; - acquire_console_sem(); + console_lock(); for_each_console(con) if (off++ == *pos) break; @@ -84,7 +84,7 @@ static void *c_next(struct seq_file *m, void *v, loff_t *pos) static void c_stop(struct seq_file *m, void *v) { - release_console_sem(); + console_unlock(); } static const struct seq_operations consoles_op = { diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index a65239cfd97e..ed257d141568 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -101,6 +101,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_MEMORY_FAILURE "HardwareCorrupted: %5lu kB\n" #endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + "AnonHugePages: %8lu kB\n" +#endif , K(i.totalram), K(i.freeram), @@ -128,7 +131,12 @@ static int meminfo_proc_show(struct seq_file *m, void *v) K(i.freeswap), K(global_page_state(NR_FILE_DIRTY)), K(global_page_state(NR_WRITEBACK)), - K(global_page_state(NR_ANON_PAGES)), + K(global_page_state(NR_ANON_PAGES) +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * + HPAGE_PMD_NR +#endif + ), K(global_page_state(NR_FILE_MAPPED)), K(global_page_state(NR_SHMEM)), K(global_page_state(NR_SLAB_RECLAIMABLE) + @@ -151,6 +159,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_MEMORY_FAILURE ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10) #endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * + HPAGE_PMD_NR) +#endif ); hugetlb_report_meminfo(m); diff --git a/fs/proc/page.c b/fs/proc/page.c index b06c674624e6..6d8e6a9e93ab 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -116,15 +116,17 @@ u64 stable_page_flags(struct page *page) if (PageHuge(page)) u |= 1 << KPF_HUGE; - u |= kpf_copy_bit(k, KPF_LOCKED, PG_locked); - /* - * Caveats on high order pages: - * PG_buddy will only be set on the head page; SLUB/SLQB do the same - * for PG_slab; SLOB won't set PG_slab at all on compound pages. + * Caveats on high order pages: page->_count will only be set + * -1 on the head page; SLUB/SLQB do the same for PG_slab; + * SLOB won't set PG_slab at all on compound pages. */ + if (PageBuddy(page)) + u |= 1 << KPF_BUDDY; + + u |= kpf_copy_bit(k, KPF_LOCKED, PG_locked); + u |= kpf_copy_bit(k, KPF_SLAB, PG_slab); - u |= kpf_copy_bit(k, KPF_BUDDY, PG_buddy); u |= kpf_copy_bit(k, KPF_ERROR, PG_error); u |= kpf_copy_bit(k, KPF_DIRTY, PG_dirty); diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index c3755bd8dd3e..60b914860f81 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -418,7 +418,8 @@ static int show_smap(struct seq_file *m, void *v) "Anonymous: %8lu kB\n" "Swap: %8lu kB\n" "KernelPageSize: %8lu kB\n" - "MMUPageSize: %8lu kB\n", + "MMUPageSize: %8lu kB\n" + "Locked: %8lu kB\n", (vma->vm_end - vma->vm_start) >> 10, mss.resident >> 10, (unsigned long)(mss.pss >> (10 + PSS_SHIFT)), @@ -430,7 +431,9 @@ static int show_smap(struct seq_file *m, void *v) mss.anonymous >> 10, mss.swap >> 10, vma_kernel_pagesize(vma) >> 10, - vma_mmu_pagesize(vma) >> 10); + vma_mmu_pagesize(vma) >> 10, + (vma->vm_flags & VM_LOCKED) ? + (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); if (m->count < m->size) /* vma is copied successfully */ m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0; |