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Date: Fri, 9 Nov 2012 17:27:41 -0800 From: Andi Kleen <andi@...stfloor.org> To: linux-kernel@...r.kernel.org Cc: acme@...hat.com, peterz@...radead.org, jolsa@...hat.com, eranian@...gle.com, mingo@...nel.org, namhyung@...nel.org, Andi Kleen <ak@...ux.intel.com> Subject: [PATCH 25/32] tools, perf: Add a precise event qualifier From: Andi Kleen <ak@...ux.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. Signed-off-by: Andi Kleen <ak@...ux.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 c0b785b..5b97a2b 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -526,6 +526,12 @@ 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 > 2) + 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 ac9a6aa..c1166dd 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -49,6 +49,7 @@ 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 66959fa..892297f 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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