linux-kernel - [PATCH v2 4/6] perf: Remove perf_event

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Message-Id: <1310740503-15608-5-git-send-email-ming.m.lin@intel.com>
Date:	Fri, 15 Jul 2011 14:35:01 +0000
From:	Lin Ming <ming.m.lin@...el.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 4/6] perf: Remove perf_event_attr::type check

PMU type id can be allocated dynamically, so perf_event_attr::type check
when copying attribute from userspace to kernel is not valid.

Signed-off-by: Lin Ming <ming.m.lin@...el.com>
---
 kernel/events/core.c |    7 -------
 1 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 9f4f463..7bd8d5d 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5928,13 +5928,6 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
 	if (ret)
 		return -EFAULT;
 
-	/*
-	 * If the type exists, the corresponding creation will verify
-	 * the attr->config.
-	 */
-	if (attr->type >= PERF_TYPE_MAX)
-		return -EINVAL;
-
 	if (attr->__reserved_1)
 		return -EINVAL;
 
-- 
1.7.5.1

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