linux-kernel - [PATCH 15/30] perf kvm: Use perf_session

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Message-Id: <1348502384-14442-16-git-send-email-acme@infradead.org>
Date:	Mon, 24 Sep 2012 12:59:29 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Namhyung Kim <namhyung.kim@....com>,
	Namhyung Kim <namhyung@...nel.org>,
	David Ahern <dsahern@...il.com>,
	Dong Hao <haodong@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>,
	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 15/30] perf kvm: Use perf_session_env for reading cpuid

From: Namhyung Kim <namhyung.kim@....com>

We have processed and saved cpuid information to perf_session_env so
reuse it for get_cpu_isa().

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Dong Hao <haodong@...ux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1348474503-15070-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-kvm.c |   10 +---------
 1 files changed, 1 insertions(+), 9 deletions(-)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 3eb53e3..a28c9ca 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -664,16 +664,9 @@ static struct perf_tool eops = {
 
 static int get_cpu_isa(struct perf_session *session)
 {
-	char *cpuid;
+	char *cpuid = session->header.env.cpuid;
 	int isa;
 
-	cpuid = perf_header__read_feature(session, HEADER_CPUID);
-
-	if (!cpuid) {
-		pr_err("read HEADER_CPUID failed.\n");
-		return -ENOTSUP;
-	}
-
 	if (strstr(cpuid, "Intel"))
 		isa = 1;
 	else if (strstr(cpuid, "AMD"))
@@ -683,7 +676,6 @@ static int get_cpu_isa(struct perf_session *session)
 		isa = -ENOTSUP;
 	}
 
-	free(cpuid);
 	return isa;
 }
 
-- 
1.7.1

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