linux-kernel - [tip:perf/core] x86, perf: P4 PMU -- Get rid of redundant check for array index

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Message-ID: <tip-3f51b7119d052827dbb0e40c966acdf2bdc6f47f@git.kernel.org>
Date:	Sat, 8 May 2010 16:10:17 GMT
From:	tip-bot for Cyrill Gorcunov <gorcunov@...nvz.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	gorcunov@...nvz.org, peterz@...radead.org, fweisbec@...il.com,
	ming.m.lin@...el.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] x86, perf: P4 PMU -- Get rid of redundant check for array index

Commit-ID:  3f51b7119d052827dbb0e40c966acdf2bdc6f47f
Gitweb:     http://git.kernel.org/tip/3f51b7119d052827dbb0e40c966acdf2bdc6f47f
Author:     Cyrill Gorcunov <gorcunov@...nvz.org>
AuthorDate: Sat, 8 May 2010 15:25:53 +0400
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sat, 8 May 2010 14:17:53 +0200

x86, perf: P4 PMU -- Get rid of redundant check for array index

The caller already has done such a check.
And it was wrong anyway, it had to be '>=' rather than '>'

Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Lin Ming <ming.m.lin@...el.com>
LKML-Reference: <20100508112717.130386882@...nvz.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/cpu/perf_event_p4.c |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index ca40180..b8c2d37 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -406,11 +406,6 @@ static u64 p4_pmu_event_map(int hw_event)
 	unsigned int esel;
 	u64 config;
 
-	if (hw_event > ARRAY_SIZE(p4_general_events)) {
-		printk_once(KERN_ERR "P4 PMU: Bad index: %i\n", hw_event);
-		return 0;
-	}
-
 	config = p4_general_events[hw_event];
 	bind = p4_config_get_bind(config);
 	esel = P4_OPCODE_ESEL(bind->opcode);
--
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