[PATCH][GIT PULL] tracing: Fix uninitialized variable of tracing/trace output
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From: Steven Rostedt on 9 Apr 2010 17:10 Ingo, Please pull the latest tip/tracing/core tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git tip/tracing/core Lai Jiangshan (1): tracing: Fix uninitialized variable of tracing/trace output ---- kernel/trace/trace.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) --------------------------- commit aa27497c2fb4c7f57706099bd489e683e5cc3e3b Author: Lai Jiangshan <laijs(a)cn.fujitsu.com> Date: Mon Apr 5 17:11:05 2010 +0800 tracing: Fix uninitialized variable of tracing/trace output Because a local variable is not initialized, I got these when I did 'cat tracing/trace'. (not trace_pipe): CPU:0 [LOST 18446744071579453134 EVENTS] ps-3099 [000] 560.770221: lock_acquire: ffff880030865010 &(&dentry->d_lock)->rlock CPU:0 [LOST 18446744071579453134 EVENTS] ps-3099 [000] 560.770221: lock_release: ffff880030865010 &(&dentry->d_lock)->rlock CPU:0 [LOST 18446612133255294080 EVENTS] ps-3099 [000] 560.770221: lock_acquire: ffff880030865010 &(&dentry->d_lock)->rlock CPU:0 [LOST 18446744071579453134 EVENTS] ps-3099 [000] 560.770222: lock_release: ffff880030865010 &(&dentry->d_lock)->rlock CPU:0 [LOST 18446744071579453134 EVENTS] ps-3099 [000] 560.770222: lock_release: ffffffff816cfb98 dcache_lock See peek_next_entry(), it does not set *lost_events when we 'cat tracing/trace' Signed-off-by: Lai Jiangshan <laijs(a)cn.fujitsu.com> LKML-Reference: <4BB9A929.2000303(a)cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt(a)goodmis.org> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 0498beb..b9be232 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1571,7 +1571,7 @@ __find_next_entry(struct trace_iterator *iter, int *ent_cpu, { struct ring_buffer *buffer = iter->tr->buffer; struct trace_entry *ent, *next = NULL; - unsigned long lost_events, next_lost = 0; + unsigned long lost_events = 0, next_lost = 0; int cpu_file = iter->cpu_file; u64 next_ts = 0, ts; int next_cpu = -1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |