linux-kernel - [PATCH 1/5] perf, tools: Remove obsolete dummy execve

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Date:	Fri,  2 Aug 2013 17:41:09 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	acme@...radead.org
Cc:	eranian@...gle.com, jolsa@...hat.com, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 1/5] perf, tools: Remove obsolete dummy execve

From: Andi Kleen <ak@...ux.intel.com>

Minor cleanup.

The dummy execve to pre-resolve the PLT is obsolete since
"enable_on_execve" was added. The counters are only
running after the execve anyways. So just remove it.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/evlist.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 8065ce8..62efec9 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -783,13 +783,6 @@ int perf_evlist__prepare_workload(struct perf_evlist *evlist,
 		fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
 
 		/*
-		 * Do a dummy execvp to get the PLT entry resolved,
-		 * so we avoid the resolver overhead on the real
-		 * execvp call.
-		 */
-		execvp("", (char **)argv);
-
-		/*
 		 * Tell the parent we're ready to go
 		 */
 		close(child_ready_pipe[1]);
-- 
1.8.3.1

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