From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 4 Mar 2010 12:57:24 +0000 (+0100)
Subject: perf: Add attr->precise support to raw event parsing
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=69fef0d2e2c2c049ef4207a52e78b50d527bd85a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

perf: Add attr->precise support to raw event parsing

Minimal userspace interface to the new 'precise' events flag.

Can be used like "perf top -e r00c0p" which will use PEBS to sample
retired instructions.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
LKML-Reference: <20100304140100.468665803@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 05d0c5c2030c..a2014459125a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -656,6 +656,10 @@ parse_raw_event(const char **strp, struct perf_event_attr *attr)
 		return EVT_FAILED;
 	n = hex2u64(str + 1, &config);
 	if (n > 0) {
+		if (str[n+1] == 'p') {
+			attr->precise = 1;
+			n++;
+		}
 		*strp = str + n + 1;
 		attr->type = PERF_TYPE_RAW;
 		attr->config = config;