Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753239AbZLVNDt (ORCPT ); Tue, 22 Dec 2009 08:03:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753024AbZLVNDs (ORCPT ); Tue, 22 Dec 2009 08:03:48 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:51352 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752742AbZLVNDr (ORCPT ); Tue, 22 Dec 2009 08:03:47 -0500 Message-ID: <4B30C347.4080503@cn.fujitsu.com> Date: Tue, 22 Dec 2009 21:01:59 +0800 From: Xiao Guangrong User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: Ingo Molnar CC: Frederic Weisbecker , Thomas Gleixner , Peter Zijlstra , Steven Rostedt , Paul Mackerras , LKML Subject: [PATCH v2 1/5] perf_event: fix getting point References: <4B27702F.1080507@cn.fujitsu.com> <20091215142325.GC5833@nowhere> <4B30C2D1.4030006@cn.fujitsu.com> In-Reply-To: <4B30C2D1.4030006@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3377 Lines: 101 The point that got by raw_field_ptr() is point to @data offset not tracepoint saved. Introduce raw_field_array() to get array data Changlog v1->v2: - fix the typo 'arry' -> 'array' that is pointed out by Frederic Weisbecker - use '(void *)(unsigned long)value' instead of 'memcpy()' as Frederic Weisbecker's suggestion Signed-off-by: Xiao Guangrong --- tools/perf/builtin-sched.c | 3 +-- tools/perf/util/trace-event-parse.c | 23 ++++++++++++++++++++--- tools/perf/util/trace-event.h | 3 +++ 3 files changed, 24 insertions(+), 5 deletions(-) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 80209df..c083e88 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -630,8 +630,7 @@ static void test_calibrations(void) #define FILL_ARRAY(ptr, array, event, data) \ do { \ - void *__array = raw_field_ptr(event, #array, data); \ - memcpy(ptr.array, __array, sizeof(ptr.array)); \ + raw_field_array(event, #array, data, ptr.array, sizeof(ptr.array));\ } while(0) #define FILL_COMMON_FIELDS(ptr, event, data) \ diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index c5c32be..037bbe3 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -840,7 +840,7 @@ static int event_read_fields(struct event *event, struct format_field **fields) field->flags |= FIELD_IS_ARRAY; type = read_token(&token); - while (strcmp(token, "]") != 0) { + while (strcmp(token, "]") != 0) { if (last_type == EVENT_ITEM && type == EVENT_ITEM) len = 2; @@ -1919,13 +1919,30 @@ raw_field_value(struct event *event, const char *name, void *data) void *raw_field_ptr(struct event *event, const char *name, void *data) { + unsigned long long value; + + value = raw_field_value(event, name, data); + + if (!value) + return NULL; + + return (void *)(unsigned long)value; +} + +unsigned long long +raw_field_array(struct event *event, const char *name, void *data, + void *array, int array_size) +{ + int len; struct format_field *field; field = find_any_field(event, name); if (!field) - return NULL; + return 0ULL; - return data + field->offset; + len = min(array_size, field->size); + memcpy(array, data + field->offset, len); + return len; } static int get_common_info(const char *type, int *offset, int *size) diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index 6ad4056..c3b5c39 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -255,6 +255,9 @@ unsigned long long read_size(void *ptr, int size); unsigned long long raw_field_value(struct event *event, const char *name, void *data); void *raw_field_ptr(struct event *event, const char *name, void *data); +unsigned long long +raw_field_array(struct event *event, const char *name, void *data, + void *array, int array_size); unsigned long long eval_flag(const char *flag); int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events); -- 1.6.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/