linux-kernel - Re: Re: [PATCH] Breaks the redundant loop in kernel/marker.c

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Message-ID: <48FC3083.8020104@cn.fujitsu.com>
Date:	Mon, 20 Oct 2008 15:17:23 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Re: [PATCH] Breaks the redundant loop in kernel/marker.c

Ingo Molnar wrote:
> hm, could you describe the necessity of this patch some more? This has 
> the change to change behavior, which might even be a bugfix: is there 
> any chance that the closure-loop in the e->ptype != NULL branch does not 
> exit? Before your patch we'd continue the iteration - which _probably_ 
> does not lead to any more matches (e->name is supposed to be unique).

Because e->name is unique in list, we don't need to continue the iteration
after matched.
This is a cleanup.

Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
---
 kernel/marker.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/kernel/marker.c b/kernel/marker.c
index 7d1faec..2c3172d 100644
--- a/kernel/marker.c
+++ b/kernel/marker.c
@@ -836,8 +836,6 @@ void *marker_get_private_data(const char *name, marker_probe_func *probe,
 			if (!e->ptype) {
 				if (num == 0 && e->single.func == probe)
 					return e->single.probe_private;
-				else
-					break;
 			} else {
 				struct marker_probe_closure *closure;
 				int match = 0;
@@ -849,6 +847,7 @@ void *marker_get_private_data(const char *name, marker_probe_func *probe,
 						return closure[i].probe_private;
 				}
 			}
+			break;
 		}
 	}
 	return ERR_PTR(-ENOENT);
-- 
1.5.5.3


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