The patch titled
maps: make /proc/pid/smaps optional under CONFIG_EMBEDDED
has been added to the -mm tree. Its filename is
maps2-make-proc-pid-smaps-optional-under-config_embedded.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: maps: make /proc/pid/smaps optional under CONFIG_EMBEDDED
From: Matt Mackall <mpm@xxxxxxxxxxx>
This interface is primarily useful for doing memory profiling and not much use
on deployed embedded boxes. Make it optional. Together with
/proc/pid/clear_refs, this save a few K.
Signed-off-by: Matt Mackall <mpm@xxxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/base.c | 4 ++++
fs/proc/task_mmu.c | 2 ++
init/Kconfig | 8 ++++++++
3 files changed, 14 insertions(+)
diff -puN fs/proc/base.c~maps2-make-proc-pid-smaps-optional-under-config_embedded fs/proc/base.c
--- a/fs/proc/base.c~maps2-make-proc-pid-smaps-optional-under-config_embedded
+++ a/fs/proc/base.c
@@ -1853,8 +1853,10 @@ static struct pid_entry tgid_base_stuff[
REG("mountstats", S_IRUSR, mountstats),
#ifdef CONFIG_MMU
REG("clear_refs", S_IWUSR, clear_refs),
+#ifdef CONFIG_PROC_SMAPS
REG("smaps", S_IRUGO, smaps),
#endif
+#endif
#ifdef CONFIG_SECURITY
DIR("attr", S_IRUGO|S_IXUGO, attr_dir),
#endif
@@ -2135,8 +2137,10 @@ static struct pid_entry tid_base_stuff[]
REG("mounts", S_IRUGO, mounts),
#ifdef CONFIG_MMU
REG("clear_refs", S_IWUSR, clear_refs),
+#ifdef CONFIG_PROC_SMAPS
REG("smaps", S_IRUGO, smaps),
#endif
+#endif
#ifdef CONFIG_SECURITY
DIR("attr", S_IRUGO|S_IXUGO, attr_dir),
#endif
diff -puN fs/proc/task_mmu.c~maps2-make-proc-pid-smaps-optional-under-config_embedded fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~maps2-make-proc-pid-smaps-optional-under-config_embedded
+++ a/fs/proc/task_mmu.c
@@ -310,6 +310,7 @@ const struct file_operations proc_maps_o
.release = seq_release_private,
};
+#ifdef CONFIG_PROC_SMAPS
struct mem_size_stats
{
struct vm_area_struct *vma;
@@ -417,6 +418,7 @@ const struct file_operations proc_smaps_
.llseek = seq_lseek,
.release = seq_release_private,
};
+#endif
static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, void *private)
diff -puN init/Kconfig~maps2-make-proc-pid-smaps-optional-under-config_embedded init/Kconfig
--- a/init/Kconfig~maps2-make-proc-pid-smaps-optional-under-config_embedded
+++ a/init/Kconfig
@@ -492,6 +492,14 @@ config VM_EVENT_COUNTERS
on EMBEDDED systems. /proc/vmstat will only show page counts
if VM event counters are disabled.
+config PROC_SMAPS
+ default y
+ bool "Enable /proc/pid/smaps support" if EMBEDDED && PROC_FS && MMU
+ help
+ The /proc/pid/smaps interface reports a process's private and
+ shared memory per mapping. Disabling this interface will reduce
+ the size of the kernel for small machines.
+
endmenu # General setup
config RT_MUTEXES
_
Patches currently in -mm which might be from mpm@xxxxxxxxxxx are
slab-introduce-krealloc.patch
slab-introduce-krealloc-fix.patch
smaps-add-clear_refs-file-to-clear-reference-cleanup.patch
maps2-uninline-some-functions-in-the-page-walker.patch
maps2-eliminate-the-pmd_walker-struct-in-the-page-walker.patch
maps2-remove-vma-from-args-in-the-page-walker.patch
maps2-propagate-errors-from-callback-in-page-walker.patch
maps2-add-callbacks-for-each-level-to-page-walker.patch
maps2-move-the-page-walker-code-to-lib.patch
maps2-simplify-interdependence-of-proc-pid-maps-and-smaps.patch
maps2-move-clear_refs-code-to-task_mmuc.patch
maps2-regroup-task_mmu-by-interface.patch
maps2-make-proc-pid-smaps-optional-under-config_embedded.patch
maps2-make-proc-pid-clear_refs-option-under-config_embedded.patch
maps2-add-proc-pid-pagemap-interface.patch
maps2-add-proc-kpagemap-interface.patch
-
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