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From: Peter Zijlstra on 3 Mar 2010 11:50

Sorta works, the PEBS-LBR-fixup stuff makes my machine unhappy, but I could
have made a silly mistake there..

Can be tested using the below patchlet and something like: perf top -e r00c0p

---
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 05d0c5c..f8314e6 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -656,6 +656,11 @@ 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;
+ printf("precise\n");
+ n++;
+ }
*strp = str + n + 1;
attr->type = PERF_TYPE_RAW;
attr->config = config;


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Prev: sched: make runtime balancing code more EDF-friendly
Next: x86: Manage ENERGY_PERF_BIAS based on cpufreq governor