The patch titled
maps: make /proc/pid/clear_refs option under CONFIG_EMBEDDED
has been removed from the -mm tree. Its filename was
maps2-make-proc-pid-clear_refs-option-under-config_embedded.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
Subject: maps: make /proc/pid/clear_refs option 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/smaps,
this save a few K.
Signed-off-by: Matt Mackall <mpm@xxxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/base.c | 4 ++++
fs/proc/task_mmu.c | 2 ++
init/Kconfig | 9 +++++++++
3 files changed, 15 insertions(+)
diff -puN fs/proc/base.c~maps2-make-proc-pid-clear_refs-option-under-config_embedded fs/proc/base.c
--- a/fs/proc/base.c~maps2-make-proc-pid-clear_refs-option-under-config_embedded
+++ a/fs/proc/base.c
@@ -2033,7 +2033,9 @@ static const struct pid_entry tgid_base_
REG("mounts", S_IRUGO, mounts),
REG("mountstats", S_IRUSR, mountstats),
#ifdef CONFIG_MMU
+#ifdef CONFIG_PROC_CLEAR_REFS
REG("clear_refs", S_IWUSR, clear_refs),
+#endif
#ifdef CONFIG_PROC_SMAPS
REG("smaps", S_IRUGO, smaps),
#endif
@@ -2321,7 +2323,9 @@ static const struct pid_entry tid_base_s
LNK("exe", exe),
REG("mounts", S_IRUGO, mounts),
#ifdef CONFIG_MMU
+#ifdef CONFIG_PROC_CLEAR_REFS
REG("clear_refs", S_IWUSR, clear_refs),
+#endif
#ifdef CONFIG_PROC_SMAPS
REG("smaps", S_IRUGO, smaps),
#endif
diff -puN fs/proc/task_mmu.c~maps2-make-proc-pid-clear_refs-option-under-config_embedded fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~maps2-make-proc-pid-clear_refs-option-under-config_embedded
+++ a/fs/proc/task_mmu.c
@@ -424,6 +424,7 @@ const struct file_operations proc_smaps_
};
#endif
+#ifdef CONFIG_PROC_CLEAR_REFS
static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, void *private)
{
@@ -493,6 +494,7 @@ static ssize_t clear_refs_write(struct f
const struct file_operations proc_clear_refs_operations = {
.write = clear_refs_write,
};
+#endif
#ifdef CONFIG_NUMA
extern int show_numa_map(struct seq_file *m, void *v);
diff -puN init/Kconfig~maps2-make-proc-pid-clear_refs-option-under-config_embedded init/Kconfig
--- a/init/Kconfig~maps2-make-proc-pid-clear_refs-option-under-config_embedded
+++ a/init/Kconfig
@@ -604,6 +604,15 @@ config PROC_SMAPS
shared memory per mapping. Disabling this interface will reduce
the size of the kernel for small machines.
+config PROC_CLEAR_REFS
+ default y
+ bool "Enable /proc/pid/clear_refs support" if EMBEDDED && PROC_FS && MMU
+ help
+ The /proc/pid/clear_refs interface allows clearing the
+ referenced bits on a process's memory maps to allow monitoring
+ working set size. 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
origin.patch
maps2-make-proc-pid-clear_refs-option-under-config_embedded.patch
maps2-add-proc-pid-pagemap-interface.patch
maps2-add-proc-pid-pagemap-interface-fix-proc-pid-pagemap-return-length-calculation.patch
maps2-add-proc-pid-pagemap-interface-fix-proc-pid-pagemap-end-address-calculation.patch
maps2-add-proc-pid-pagemap-interface-fix-proc-pid-pagemap-header-copy-to-userspace.patch
maps2-add-proc-kpagemap-interface.patch
mmaps2-vma-out-of-mem_size_stats.patch
maps2-make-proc-pid-smaps-optional-under-config_embeddedpatch.patch
maps2-make-proc-pid-smaps-optional-under-config_embeddedpatch-fix.patch
maps-pssproportional-set-size-accounting-in-smaps.patch
lib-sortc-optimization.patch
sparse-pointer-use-of-zero-as-null.patch
sparse-pointer-use-of-zero-as-null-checkpatch-fixes.patch
-
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