linux-kernel - RE: [PATCH] : eliminate code duplication in kernel/tracepoint.c

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Message-ID: <DDFD17CC94A9BD49A82147DDF7D545C501EA9047@exchange.ZeugmaSystems.local>
Date:	Tue, 25 Aug 2009 07:00:02 -0700
From:	"Anirban Sinha" <ASinha@...gmasystems.com>
To:	"Ingo Molnar" <mingo@...e.hu>, "Li Zefan" <lizf@...fujitsu.com>
Cc:	<linux-kernel@...r.kernel.org>, "Oleg Nesterov" <oleg@...sign.ru>
Subject: RE: [PATCH] : eliminate code duplication in kernel/tracepoint.c


>> I still think it's better not to remove this break. every "case"
>> should have a break or a return, expect for the falling throught
>> cases.
>
>Correct. That might seem like a superfluous statement, but when we
>add new cases it stays robust while with the missing break one can
>create an unintended fall-through codepath.
>
>	Ingo

Thanks a lot Li and Ingo for all the feedback. Final patch goes below:

>From f9826874841a5b15b553cfb6540d1ecfa6b55531 Mon Sep 17 00:00:00 2001
From: Anirban Sinha <asinha@...gmasystems.com>
Date: Tue, 25 Aug 2009 06:50:54 -0700
Subject: cleanup: eliminate code duplication in kernel/tracepoint.c


Signed-off-by: Anirban Sinha <asinha@...gmasystems.com>
Reviewed-by: Li Zefan <lizf@...fujitsu.com>
---
 kernel/tracepoint.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 1ef5d3a..4840ab6 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -554,9 +554,6 @@ int tracepoint_module_notify(struct notifier_block
*self,
 
 	switch (val) {
 	case MODULE_STATE_COMING:
-		tracepoint_update_probe_range(mod->tracepoints,
-			mod->tracepoints + mod->num_tracepoints);
-		break;
 	case MODULE_STATE_GOING:
 		tracepoint_update_probe_range(mod->tracepoints,
 			mod->tracepoints + mod->num_tracepoints);
-- 
1.6.4

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