Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 11/18] tools, perf: Add a precise event qualifier v2 | Date | Fri, 25 Jan 2013 14:33:05 -0800 |
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From: Andi Kleen <ak@linux.intel.com>
Add a precise qualifier, like cpu/event=0x3c,precise=1/
This is needed so that the kernel can request enabling PEBS for TSX events. The parser bails out on any sysfs parse errors, so this is needed in any case to handle any event on the TSX perf kernel.
v2: Allow 3 as value Signed-off-by: Andi Kleen <ak@linux.intel.com> --- tools/perf/util/parse-events.c | 6 ++++++ tools/perf/util/parse-events.h | 1 + tools/perf/util/parse-events.l | 1 + 3 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 02f6421..f6f6aaa 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -568,6 +568,12 @@ do { \ case PARSE_EVENTS__TERM_TYPE_NAME: CHECK_TYPE_VAL(STR); break; + case PARSE_EVENTS__TERM_TYPE_PRECISE: + CHECK_TYPE_VAL(NUM); + if ((unsigned)term->val.num > 3) + return -EINVAL; + attr->precise_ip = term->val.num; + break; default: return -EINVAL; } diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 2cd2c42..9d526cf 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -48,6 +48,7 @@ enum { PARSE_EVENTS__TERM_TYPE_NAME, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE, + PARSE_EVENTS__TERM_TYPE_PRECISE, }; struct parse_events_term { diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index e9d1134..32a9000 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -169,6 +169,7 @@ period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } , { return ','; } "/" { BEGIN(INITIAL); return '/'; } +precise { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_PRECISE); } {name_minus} { return str(yyscanner, PE_NAME); } } -- 1.7.7.6
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