lkml.org 
[lkml]   [2009]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH v2 2/5]: trace_event: export HZ in timer's tracepoint format
Export HZ in timer's tracepoint, we can use it to get
TIMER/ITIMER_VIRTUAL/ITIMER_PROF exact latency and it's
suggested by Ingo

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
include/trace/events/timer.h | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
index 13ec15a..7749ae5 100644
--- a/include/trace/events/timer.h
+++ b/include/trace/events/timer.h
@@ -74,14 +74,17 @@ TRACE_EVENT(timer_expire_entry,
TP_STRUCT__entry(
__field( void *, timer )
__field( unsigned long, now )
+ __field( int, hz )
),

TP_fast_assign(
__entry->timer = timer;
__entry->now = jiffies;
+ __entry->hz = HZ;
),

- TP_printk("timer=%p now=%lu", __entry->timer, __entry->now)
+ TP_printk("timer=%p now=%lu HZ=%d", __entry->timer, __entry->now,
+ __entry->hz)
);

/**
--
1.6.1.2



\
 
 \ /
  Last update: 2009-12-22 14:07    [W:0.096 / U:0.048 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site