* + mm-smaps-export-mlock-information.patch added to -mm tree
@ 2010-08-20 0:25 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2010-08-20 0:25 UTC (permalink / raw)
To: mm-commits; +Cc: knikanth, balbir, fengguang.wu, mpm
The patch titled
mm: smaps: export mlock information
has been added to the -mm tree. Its filename is
mm-smaps-export-mlock-information.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: smaps: export mlock information
From: Nikanth Karthikesan <knikanth@suse.de>
Currently there is no way to find whether a process has locked its pages
in memory or not. And which of the memory regions are locked in memory.
Add a new field "Locked" to export this information via the smaps file.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
Documentation/filesystems/proc.txt | 3 +++
fs/proc/task_mmu.c | 7 +++++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff -puN Documentation/filesystems/proc.txt~mm-smaps-export-mlock-information Documentation/filesystems/proc.txt
--- a/Documentation/filesystems/proc.txt~mm-smaps-export-mlock-information
+++ a/Documentation/filesystems/proc.txt
@@ -373,6 +373,7 @@ Referenced: 892 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
+Locked: 374 kB
The first of these lines shows the same information as is displayed for the
mapping in /proc/PID/maps. The remaining lines show the size of the mapping,
@@ -397,6 +398,8 @@ To clear the bits for the file mapped pa
> echo 3 > /proc/PID/clear_refs
Any other value written to /proc/PID/clear_refs will have no effect.
+The "Locked" indicates whether the mapping is locked in memory or not.
+
1.2 Kernel data
---------------
diff -puN fs/proc/task_mmu.c~mm-smaps-export-mlock-information fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~mm-smaps-export-mlock-information
+++ a/fs/proc/task_mmu.c
@@ -411,7 +411,8 @@ static int show_smap(struct seq_file *m,
"Referenced: %8lu kB\n"
"Swap: %8lu kB\n"
"KernelPageSize: %8lu kB\n"
- "MMUPageSize: %8lu kB\n",
+ "MMUPageSize: %8lu kB\n"
+ "Locked: %8lu kB\n",
(vma->vm_end - vma->vm_start) >> 10,
mss.resident >> 10,
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
@@ -422,7 +423,9 @@ static int show_smap(struct seq_file *m,
mss.referenced >> 10,
mss.swap >> 10,
vma_kernel_pagesize(vma) >> 10,
- vma_mmu_pagesize(vma) >> 10);
+ vma_mmu_pagesize(vma) >> 10,
+ (vma->vm_flags & VM_LOCKED) ?
+ (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
_
Patches currently in -mm which might be from knikanth@suse.de are
linux-next.patch
mm-smaps-export-mlock-information.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
* + mm-smaps-export-mlock-information.patch added to -mm tree
@ 2010-09-16 19:38 akpm
0 siblings, 0 replies; 2+ messages in thread
From: akpm @ 2010-09-16 19:38 UTC (permalink / raw)
To: mm-commits; +Cc: knikanth, balbir, fengguang.wu, mpm
The patch titled
mm: smaps: export mlock information
has been added to the -mm tree. Its filename is
mm-smaps-export-mlock-information.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: smaps: export mlock information
From: Nikanth Karthikesan <knikanth@suse.de>
Currently there is no way to find whether a process has locked its pages
in memory or not. And which of the memory regions are locked in memory.
Add a new field "Locked" to export this information via the smaps file.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
Documentation/filesystems/proc.txt | 3 +++
fs/proc/task_mmu.c | 7 +++++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff -puN Documentation/filesystems/proc.txt~mm-smaps-export-mlock-information Documentation/filesystems/proc.txt
--- a/Documentation/filesystems/proc.txt~mm-smaps-export-mlock-information
+++ a/Documentation/filesystems/proc.txt
@@ -373,6 +373,7 @@ Referenced: 892 kB
Swap: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
+Locked: 374 kB
The first of these lines shows the same information as is displayed
for the mapping in /proc/PID/maps. The remaining lines show the size
@@ -398,6 +399,8 @@ To clear the bits for the file mapped pa
> echo 3 > /proc/PID/clear_refs
Any other value written to /proc/PID/clear_refs will have no effect.
+The "Locked" indicates whether the mapping is locked in memory or not.
+
1.2 Kernel data
---------------
diff -puN fs/proc/task_mmu.c~mm-smaps-export-mlock-information fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~mm-smaps-export-mlock-information
+++ a/fs/proc/task_mmu.c
@@ -416,7 +416,8 @@ static int show_smap(struct seq_file *m,
"Referenced: %8lu kB\n"
"Swap: %8lu kB\n"
"KernelPageSize: %8lu kB\n"
- "MMUPageSize: %8lu kB\n",
+ "MMUPageSize: %8lu kB\n"
+ "Locked: %8lu kB\n",
(vma->vm_end - vma->vm_start) >> 10,
mss.resident >> 10,
(unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
@@ -427,7 +428,9 @@ static int show_smap(struct seq_file *m,
mss.referenced >> 10,
mss.swap >> 10,
vma_kernel_pagesize(vma) >> 10,
- vma_mmu_pagesize(vma) >> 10);
+ vma_mmu_pagesize(vma) >> 10,
+ (vma->vm_flags & VM_LOCKED) ?
+ (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);
if (m->count < m->size) /* vma is copied successfully */
m->version = (vma != get_gate_vma(task)) ? vma->vm_start : 0;
_
Patches currently in -mm which might be from knikanth@suse.de are
linux-next.patch
proc-pid-smaps-after-swapout-swapin-private-dirty-mappings-are-reported-clean.patch
documentation-filesystems-proctxt-improve-smaps-field-documentation.patch
mm-smaps-export-mlock-information.patch
^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-08-20 0:25 + mm-smaps-export-mlock-information.patch added to -mm tree akpm
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2010-09-16 19:38 akpm
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