linux-kernel - [DRAFT PATCH 3/3] perf: Update perf tool to monitor uncore events

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Date:	Tue, 02 Nov 2010 15:28:53 +0800
From:	Lin Ming <ming.m.lin@...el.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Stephane Eranian <eranian@...gle.com>, robert.richter@....com,
	Cyrill Gorcunov <gorcunov@...il.com>, paulus@...ba.org,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: [DRAFT PATCH 3/3] perf: Update perf tool to monitor uncore events

Uncore events are monitored with raw events with "ru" prefix("u" for uncore).

./perf stat -e ru0101 -- ls

Performance counter stats for 'ls':

             795920  raw 0x101               

        0.002110130  seconds time elapsed

Signed-off-by: Lin Ming <ming.m.lin@...el.com>
---
 tools/perf/util/parse-events.c |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 4af5bd5..637266a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -278,7 +278,7 @@ const char *__event_name(int type, u64 config)
 {
 	static char buf[32];
 
-	if (type == PERF_TYPE_RAW) {
+	if (type == PERF_TYPE_RAW || type == PERF_TYPE_UNCORE) {
 		sprintf(buf, "raw 0x%llx", config);
 		return buf;
 	}
@@ -655,14 +655,20 @@ parse_raw_event(const char **strp, struct perf_event_attr *attr)
 {
 	const char *str = *strp;
 	u64 config;
+	int uncore = 0;
 	int n;
 
 	if (*str != 'r')
 		return EVT_FAILED;
-	n = hex2u64(str + 1, &config);
+	if (*(str+1) == 'u')
+		uncore = 1;
+	n = hex2u64(str + 1 + uncore, &config);
 	if (n > 0) {
-		*strp = str + n + 1;
-		attr->type = PERF_TYPE_RAW;
+		*strp = str + n + 1 + uncore;
+		if (!uncore)
+			attr->type = PERF_TYPE_RAW;
+		else
+			attr->type = PERF_TYPE_UNCORE;
 		attr->config = config;
 		return EVT_HANDLED;
 	}
-- 
1.7.1




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