From 1e88328111aae3ea408f346763ba9f9bad71f876 Mon Sep 17 00:00:00 2001 From: Matt Mackall Date: Mon, 4 Feb 2008 22:29:07 -0800 Subject: maps4: make page monitoring /proc file optional Make /proc/ page monitoring configurable This puts the following files under an embedded config option: /proc/pid/clear_refs /proc/pid/smaps /proc/pid/pagemap /proc/kpagecount /proc/kpageflags [akpm@linux-foundation.org: Kconfig fix] Signed-off-by: Matt Mackall Cc: Dave Hansen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/base.c | 4 ++-- fs/proc/proc_misc.c | 4 ++++ fs/proc/task_mmu.c | 2 ++ 3 files changed, 8 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/proc/base.c b/fs/proc/base.c index 9004db04efa..cd9f84c4bbf 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2249,7 +2249,7 @@ static const struct pid_entry tgid_base_stuff[] = { LNK("exe", exe), REG("mounts", S_IRUGO, mounts), REG("mountstats", S_IRUSR, mountstats), -#ifdef CONFIG_MMU +#ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, clear_refs), REG("smaps", S_IRUGO, smaps), REG("pagemap", S_IRUSR, pagemap), @@ -2578,7 +2578,7 @@ static const struct pid_entry tid_base_stuff[] = { LNK("root", root), LNK("exe", exe), REG("mounts", S_IRUGO, mounts), -#ifdef CONFIG_MMU +#ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, clear_refs), REG("smaps", S_IRUGO, smaps), REG("pagemap", S_IRUSR, pagemap), diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c index fd751ea37fc..51288db37a0 100644 --- a/fs/proc/proc_misc.c +++ b/fs/proc/proc_misc.c @@ -676,6 +676,7 @@ static const struct file_operations proc_sysrq_trigger_operations = { }; #endif +#ifdef CONFIG_PROC_PAGE_MONITOR #define KPMSIZE sizeof(u64) #define KPMMASK (KPMSIZE - 1) /* /proc/kpagecount - an array exposing page counts @@ -804,6 +805,7 @@ static struct file_operations proc_kpageflags_operations = { .llseek = mem_lseek, .read = kpageflags_read, }; +#endif /* CONFIG_PROC_PAGE_MONITOR */ struct proc_dir_entry *proc_root_kcore; @@ -885,8 +887,10 @@ void __init proc_misc_init(void) (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE; } #endif +#ifdef CONFIG_PROC_PAGE_MONITOR create_seq_entry("kpagecount", S_IRUSR, &proc_kpagecount_operations); create_seq_entry("kpageflags", S_IRUSR, &proc_kpageflags_operations); +#endif #ifdef CONFIG_PROC_VMCORE proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL); if (proc_vmcore) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index bbd9b145051..38338ed98cc 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -337,6 +337,7 @@ const struct file_operations proc_maps_operations = { */ #define PSS_SHIFT 12 +#ifdef CONFIG_PROC_PAGE_MONITOR struct mem_size_stats { struct vm_area_struct *vma; @@ -717,6 +718,7 @@ const struct file_operations proc_pagemap_operations = { .llseek = mem_lseek, /* borrow this */ .read = pagemap_read, }; +#endif /* CONFIG_PROC_PAGE_MONITOR */ #ifdef CONFIG_NUMA extern int show_numa_map(struct seq_file *m, void *v); -- cgit v1.2.3-70-g09d2