[tip:perf/pebs] perf: Add attr->precise support to raw event parsing

[tip-bot for Peter Zijlstra]

Commit-ID:  69fef0d2e2c2c049ef4207a52e78b50d527bd85a
Gitweb:     http://git.kernel.org/tip/69fef0d2e2c2c049ef4207a52e78b50d527bd85a
Author:     Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
AuthorDate: Thu, 4 Mar 2010 13:57:24 +0100
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Wed, 10 Mar 2010 13:23:32 +0100

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@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxx>
Cc: paulus@xxxxxxxxx
Cc: eranian@xxxxxxxxxx
Cc: robert.richter@xxxxxxx
Cc: fweisbec@xxxxxxxxx
LKML-Reference: <20100304140100.468665803@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
 tools/perf/util/parse-events.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 05d0c5c..a201445 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;
--
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