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authorWu Fengguang <fengguang.wu@intel.com>2010-12-06 22:34:29 -0600
committerWu Fengguang <fengguang.wu@intel.com>2011-07-09 22:09:03 -0700
commite1cbe236013c82bcf9a156e98d7b47efb89d2674 (patch)
treec2f1764a3d07fd01fdbe6fd7d6ecd647557808d5 /mm/page-writeback.c
parentffd1f609ab10532e8137b4b981fdf903ef4d0b32 (diff)
writeback: trace global_dirty_state
Add trace event balance_dirty_state for showing the global dirty page counts and thresholds at each global_dirty_limits() invocation. This will cover the callers throttle_vm_writeout(), over_bground_thresh() and each balance_dirty_pages() loop. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'mm/page-writeback.c')
-rw-r--r--mm/page-writeback.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 798842a22474..f9d9f5476d58 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -447,6 +447,7 @@ void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty)
}
*pbackground = background;
*pdirty = dirty;
+ trace_global_dirty_state(background, dirty);
}
/**