diff options
| -rw-r--r-- | fs/proc/base.c | 4 | ||||
| -rw-r--r-- | fs/proc/proc_misc.c | 4 | ||||
| -rw-r--r-- | fs/proc/task_mmu.c | 2 | ||||
| -rw-r--r-- | init/Kconfig | 10 | ||||
| -rw-r--r-- | mm/Makefile | 3 |
5 files changed, 20 insertions, 3 deletions
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); diff --git a/init/Kconfig b/init/Kconfig index dc28836d9d0..aaa7e7d5305 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -678,6 +678,16 @@ config MARKERS source "arch/Kconfig" +config PROC_PAGE_MONITOR + default y + depends on PROC_FS && MMU + bool "Enable /proc page monitoring" if EMBEDDED + help + Various /proc files exist to monitor process memory utilization: + /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap, + /proc/kpagecount, and /proc/kpageflags. Disabling these + interfaces will reduce the size of the kernel by approximately 4kb. + endmenu # General setup config SLABINFO diff --git a/mm/Makefile b/mm/Makefile index 07f12132f8e..44e2528af70 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -5,7 +5,7 @@ mmu-y := nommu.o mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \ mlock.o mmap.o mprotect.o mremap.o msync.o rmap.o \ - vmalloc.o pagewalk.o + vmalloc.o obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \ page_alloc.o page-writeback.o pdflush.o \ @@ -13,6 +13,7 @@ obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \ prio_tree.o util.o mmzone.o vmstat.o backing-dev.o \ page_isolation.o $(mmu-y) +obj-$(CONFIG_PROC_PAGE_MONITOR) += pagewalk.o obj-$(CONFIG_BOUNCE) += bounce.o obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.o obj-$(CONFIG_HUGETLBFS) += hugetlb.o |