2009-11-19 21:54:23

by Frank Rowand

Subject: [PATCH] LOCKSTAT: Add usage info to Documentation/lockstat.txt

Add usage info to Documentation/lockstat.txt

Signed-off-by: Frank Rowand <[email protected]>

---
Documentation/lockstat.txt | 12 12 + 0 - 0 !
1 files changed, 12 insertions(+)

Index: b/Documentation/lockstat.txt
===================================================================
--- a/Documentation/lockstat.txt
+++ b/Documentation/lockstat.txt
@@ -62,8 +62,20 @@ applicable).
It also tracks 4 contention points per class. A contention point is a call site
that had to wait on lock acquisition.

+ - CONFIGURATION
+
+Lock statistics are enabled via CONFIG_LOCK_STATS.
+
- USAGE

+Enable collection of statistics:
+
+# echo 1 >/proc/sys/kernel/lock_stat
+
+Disable collection of statistics:
+
+# echo 0 >/proc/sys/kernel/lock_stat
+
Look at the current lock statistics:

( line numbers not part of actual output, done for clarity in the explanation

2009-12-06 13:04:29

by Frank Rowand

Subject: [tip:core/urgent] lockstat: Add usage info to Documentation/lockstat.txt

Commit-ID: f5754bfd107b08edddaf871d676ec6fe0792d07a
Gitweb: http://git.kernel.org/tip/f5754bfd107b08edddaf871d676ec6fe0792d07a
Author: Frank Rowand <[email protected]>
AuthorDate: Thu, 19 Nov 2009 13:54:05 -0800
Committer: Ingo Molnar <[email protected]>
CommitDate: Sun, 6 Dec 2009 13:20:02 +0100

lockstat: Add usage info to Documentation/lockstat.txt

Add usage info to Documentation/lockstat.txt

Signed-off-by: Frank Rowand <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
Documentation/lockstat.txt | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/Documentation/lockstat.txt b/Documentation/lockstat.txt
index 9cb9138..65f4c79 100644
--- a/Documentation/lockstat.txt
+++ b/Documentation/lockstat.txt
@@ -62,8 +62,20 @@ applicable).
It also tracks 4 contention points per class. A contention point is a call site
that had to wait on lock acquisition.

+ - CONFIGURATION
+
+Lock statistics are enabled via CONFIG_LOCK_STATS.
+
- USAGE

+Enable collection of statistics:
+
+# echo 1 >/proc/sys/kernel/lock_stat
+
+Disable collection of statistics:
+
+# echo 0 >/proc/sys/kernel/lock_stat
+
Look at the current lock statistics:

( line numbers not part of actual output, done for clarity in the explanation