diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-04-05 17:01:10 -0400 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-04-08 10:34:26 -0400 |
commit | e9e94e3bd862d31777335722e747e97d9821bc1d (patch) | |
tree | 950e87eb9870450f94e10c598eb320f450ff16ca /tools/perf/util | |
parent | 854c5548dfad017920a36201d40449fdbad90bfb (diff) |
perf trace: Ignore "overwrite" field if present in /events/header_page
That is not used in perf where we have the LOST events.
Without this patch we get:
[root@doppio ~]# perf lock report | head -3
Warning: Error: expected 'data' but read 'overwrite'
So, to make the same perf command work with kernels with and without
this field, introduce variants for the parsing routines to not warn the
user in such case.
Discussed-with: Steven Rostedt <rostedt@goodmis.org>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r-- | tools/perf/util/trace-event-parse.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index 9b3c20f42f98..3b81250ffedb 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c | |||
@@ -37,6 +37,8 @@ int header_page_ts_offset; | |||
37 | int header_page_ts_size; | 37 | int header_page_ts_size; |
38 | int header_page_size_offset; | 38 | int header_page_size_offset; |
39 | int header_page_size_size; | 39 | int header_page_size_size; |
40 | int header_page_overwrite_offset; | ||
41 | int header_page_overwrite_size; | ||
40 | int header_page_data_offset; | 42 | int header_page_data_offset; |
41 | int header_page_data_size; | 43 | int header_page_data_size; |
42 | 44 | ||
@@ -628,23 +630,32 @@ static int test_type(enum event_type type, enum event_type expect) | |||
628 | return 0; | 630 | return 0; |
629 | } | 631 | } |
630 | 632 | ||
631 | static int test_type_token(enum event_type type, char *token, | 633 | static int __test_type_token(enum event_type type, char *token, |
632 | enum event_type expect, const char *expect_tok) | 634 | enum event_type expect, const char *expect_tok, |
635 | bool warn) | ||
633 | { | 636 | { |
634 | if (type != expect) { | 637 | if (type != expect) { |
635 | warning("Error: expected type %d but read %d", | 638 | if (warn) |
636 | expect, type); | 639 | warning("Error: expected type %d but read %d", |
640 | expect, type); | ||
637 | return -1; | 641 | return -1; |
638 | } | 642 | } |
639 | 643 | ||
640 | if (strcmp(token, expect_tok) != 0) { | 644 | if (strcmp(token, expect_tok) != 0) { |
641 | warning("Error: expected '%s' but read '%s'", | 645 | if (warn) |
642 | expect_tok, token); | 646 | warning("Error: expected '%s' but read '%s'", |
647 | expect_tok, token); | ||
643 | return -1; | 648 | return -1; |
644 | } | 649 | } |
645 | return 0; | 650 | return 0; |
646 | } | 651 | } |
647 | 652 | ||
653 | static int test_type_token(enum event_type type, char *token, | ||
654 | enum event_type expect, const char *expect_tok) | ||
655 | { | ||
656 | return __test_type_token(type, token, expect, expect_tok, true); | ||
657 | } | ||
658 | |||
648 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | 659 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) |
649 | { | 660 | { |
650 | enum event_type type; | 661 | enum event_type type; |
@@ -661,7 +672,8 @@ static int read_expect_type(enum event_type expect, char **tok) | |||
661 | return __read_expect_type(expect, tok, 1); | 672 | return __read_expect_type(expect, tok, 1); |
662 | } | 673 | } |
663 | 674 | ||
664 | static int __read_expected(enum event_type expect, const char *str, int newline_ok) | 675 | static int __read_expected(enum event_type expect, const char *str, |
676 | int newline_ok, bool warn) | ||
665 | { | 677 | { |
666 | enum event_type type; | 678 | enum event_type type; |
667 | char *token; | 679 | char *token; |
@@ -672,21 +684,26 @@ static int __read_expected(enum event_type expect, const char *str, int newline_ | |||
672 | else | 684 | else |
673 | type = read_token_item(&token); | 685 | type = read_token_item(&token); |
674 | 686 | ||
675 | ret = test_type_token(type, token, expect, str); | 687 | ret = __test_type_token(type, token, expect, str, warn); |
676 | 688 | ||
677 | free_token(token); | 689 | free_token(token); |
678 | 690 | ||
679 | return ret; | 691 | return ret; |
680 | } | 692 | } |
681 | 693 | ||
694 | static int read_expected_warn(enum event_type expect, const char *str, bool warn) | ||
695 | { | ||
696 | return __read_expected(expect, str, 1, warn); | ||
697 | } | ||
698 | |||
682 | static int read_expected(enum event_type expect, const char *str) | 699 | static int read_expected(enum event_type expect, const char *str) |
683 | { | 700 | { |
684 | return __read_expected(expect, str, 1); | 701 | return __read_expected(expect, str, 1, true); |
685 | } | 702 | } |
686 | 703 | ||
687 | static int read_expected_item(enum event_type expect, const char *str) | 704 | static int read_expected_item(enum event_type expect, const char *str) |
688 | { | 705 | { |
689 | return __read_expected(expect, str, 0); | 706 | return __read_expected(expect, str, 0, true); |
690 | } | 707 | } |
691 | 708 | ||
692 | static char *event_read_name(void) | 709 | static char *event_read_name(void) |
@@ -3088,7 +3105,7 @@ static void print_args(struct print_arg *args) | |||
3088 | } | 3105 | } |
3089 | 3106 | ||
3090 | static void parse_header_field(const char *field, | 3107 | static void parse_header_field(const char *field, |
3091 | int *offset, int *size) | 3108 | int *offset, int *size, bool warn) |
3092 | { | 3109 | { |
3093 | char *token; | 3110 | char *token; |
3094 | int type; | 3111 | int type; |
@@ -3103,7 +3120,7 @@ static void parse_header_field(const char *field, | |||
3103 | goto fail; | 3120 | goto fail; |
3104 | free_token(token); | 3121 | free_token(token); |
3105 | 3122 | ||
3106 | if (read_expected(EVENT_ITEM, field) < 0) | 3123 | if (read_expected_warn(EVENT_ITEM, field, warn) < 0) |
3107 | return; | 3124 | return; |
3108 | if (read_expected(EVENT_OP, ";") < 0) | 3125 | if (read_expected(EVENT_OP, ";") < 0) |
3109 | return; | 3126 | return; |
@@ -3160,11 +3177,13 @@ int parse_header_page(char *buf, unsigned long size) | |||
3160 | init_input_buf(buf, size); | 3177 | init_input_buf(buf, size); |
3161 | 3178 | ||
3162 | parse_header_field("timestamp", &header_page_ts_offset, | 3179 | parse_header_field("timestamp", &header_page_ts_offset, |
3163 | &header_page_ts_size); | 3180 | &header_page_ts_size, true); |
3164 | parse_header_field("commit", &header_page_size_offset, | 3181 | parse_header_field("commit", &header_page_size_offset, |
3165 | &header_page_size_size); | 3182 | &header_page_size_size, true); |
3183 | parse_header_field("overwrite", &header_page_overwrite_offset, | ||
3184 | &header_page_overwrite_size, false); | ||
3166 | parse_header_field("data", &header_page_data_offset, | 3185 | parse_header_field("data", &header_page_data_offset, |
3167 | &header_page_data_size); | 3186 | &header_page_data_size, true); |
3168 | 3187 | ||
3169 | return 0; | 3188 | return 0; |
3170 | } | 3189 | } |