From: Matt Mackall <mpm@selenic.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 11/13] maps#2: Make /proc/pid/clear_refs option under CONFIG_EMBEDDED
Date: Fri, 06 Apr 2007 17:03:12 -0500 [thread overview]
Message-ID: <12.469046093@selenic.com> (raw)
In-Reply-To: <1.469046093@selenic.com>
Make /proc/pid/clear_refs option under CONFIG_EMBEDDED
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@selenic.com>
Index: mm/fs/proc/base.c
===================================================================
--- mm.orig/fs/proc/base.c 2007-04-03 14:50:33.000000000 -0500
+++ mm/fs/proc/base.c 2007-04-03 18:04:59.000000000 -0500
@@ -2000,7 +2000,9 @@ 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
@@ -2285,7 +2287,9 @@ 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
Index: mm/fs/proc/task_mmu.c
===================================================================
--- mm.orig/fs/proc/task_mmu.c 2007-04-03 14:50:33.000000000 -0500
+++ mm/fs/proc/task_mmu.c 2007-04-03 18:04:59.000000000 -0500
@@ -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);
Index: mm/init/Kconfig
===================================================================
--- mm.orig/init/Kconfig 2007-04-03 14:50:33.000000000 -0500
+++ mm/init/Kconfig 2007-04-03 18:04:59.000000000 -0500
@@ -593,6 +593,15 @@ 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
next prev parent reply other threads:[~2007-04-06 22:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-06 22:03 [PATCH 0/13] maps#2: pagemap, kpagemap, and related cleanups take 2 Matt Mackall
2007-04-06 22:03 ` [PATCH 1/13] maps#2: Uninline some functions in the page walker Matt Mackall
2007-04-06 22:03 ` [PATCH 2/13] maps#2: Eliminate the pmd_walker struct " Matt Mackall
2007-04-06 22:03 ` [PATCH 3/13] maps#2: Remove vma from args " Matt Mackall
2007-04-06 22:03 ` [PATCH 4/13] maps#2: Propagate errors from callback in " Matt Mackall
2007-04-06 22:03 ` [PATCH 5/13] maps#2: Add callbacks for each level to " Matt Mackall
2007-04-06 22:03 ` [PATCH 6/13] maps#2: Move the page walker code to lib/ Matt Mackall
2007-04-11 6:35 ` Nick Piggin
2007-04-11 7:17 ` Andrew Morton
2007-04-11 7:33 ` Nick Piggin
2007-04-11 14:40 ` Matt Mackall
2007-04-12 6:38 ` Nick Piggin
2007-04-17 20:45 ` Matt Mackall
2007-04-17 21:26 ` Permanent Kgdb integration into the kernel - lets get with it Jason Wessel
2007-04-17 22:09 ` Andi Kleen
2007-04-06 22:03 ` [PATCH 7/13] maps#2: Simplify interdependence of /proc/pid/maps and smaps Matt Mackall
2007-04-06 22:03 ` [PATCH 8/13] maps#2: Move clear_refs code to task_mmu.c Matt Mackall
2007-04-06 22:03 ` [PATCH 9/13] maps#2: Regroup task_mmu by interface Matt Mackall
2007-04-06 22:03 ` [PATCH 10/13] maps#2: Make /proc/pid/smaps optional under CONFIG_EMBEDDED Matt Mackall
2007-04-06 22:03 ` Matt Mackall [this message]
2007-04-07 5:41 ` [PATCH 11/13] maps#2: Make /proc/pid/clear_refs option " David Rientjes
2007-04-06 22:03 ` [PATCH 12/13] maps#2: Add /proc/pid/pagemap interface Matt Mackall
2007-04-07 6:55 ` Andrew Morton
2007-04-07 16:36 ` Matt Mackall
2007-04-19 19:12 ` Dave Hansen
2007-04-19 19:58 ` Matt Mackall
2007-04-06 22:03 ` [PATCH 13/13] maps#2: Add /proc/kpagemap interface Matt Mackall
2007-04-19 19:06 ` Dave Hansen
2007-04-19 20:02 ` Matt Mackall
2007-04-19 20:25 ` Dave Hansen
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