Messages in this thread Patch in this message | | | Subject | [RFC PATCH 3/3 v2] perf: Update perf tool to monitor uncore events | From | Lin Ming <> | Date | Sun, 21 Nov 2010 20:01:47 +0800 |
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Uncore events are monitored with raw events with "ru" prefix("u" for uncore).
$ ./perf stat -C 0 -e ru0101 -- ls
Performance counter stats for 'ls':
1033791 raw 0x101
0.003027583 seconds time elapsed
$ sudo ./perf top -e ru0101
-------------------------------------------------------------------------------------------------------------------- PerfTop: 22 irqs/sec kernel:68.2% exact: 0.0% [1000Hz raw 0x101], (all, 8 CPUs) --------------------------------------------------------------------------------------------------------------------
samples pcnt function DSO _______ _____ ______________________ ____________________________________
8.00 18.6% kallsyms_expand_symbol [kernel.kallsyms] 5.00 11.6% rb_next /home/mlin/linux-2.6/tools/perf/perf 5.00 11.6% clear_page_c [kernel.kallsyms]
Signed-off-by: Lin Ming <ming.m.lin@intel.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 898aa94..b03457a 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; } -- 1.7.2.3
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