diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-20 15:54:37 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-20 15:54:37 -0700 |
commit | 467f9957d9283be40101d7255d06fae7e211ff4c (patch) | |
tree | 71d155ab52b3a78bc88d0c8088b09b3c37f9357a /tools/perf/util/header.c | |
parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) | |
parent | cdf8073d6b2c6c5a3cd6ce0e6c1297157f7f99ba (diff) |
Merge branch 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (58 commits)
perf_counter: Fix perf_copy_attr() pointer arithmetic
perf utils: Use a define for the maximum length of a trace event
perf: Add timechart help text and add timechart to "perf help"
tracing, x86, cpuidle: Move the end point of a C state in the power tracer
perf utils: Be consistent about minimum text size in the svghelper
perf timechart: Add "perf timechart record"
perf: Add the timechart tool
perf: Add a SVG helper library file
tracing, perf: Convert the power tracer into an event tracer
perf: Add a sample_event type to the event_union
perf: Allow perf utilities to have "callback" options without arguments
perf: Store trace event name/id pairs in perf.data
perf: Add a timestamp to fork events
sched_clock: Make it NMI safe
perf_counter: Fix up swcounter throttling
x86, perf_counter, bts: Optimize BTS overflow handling
perf sched: Add --input=file option to builtin-sched.c
perf trace: Sample timestamp and cpu when using record flag
perf tools: Increase MAX_EVENT_LENGTH
perf tools: Fix memory leak in read_ftrace_printk()
...
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r-- | tools/perf/util/header.c | 67 |
1 files changed, 63 insertions, 4 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index ec4d4c2f952..bb4fca3efcc 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -7,9 +7,8 @@ #include "header.h" /* - * + * Create new perf.data header attribute: */ - struct perf_header_attr *perf_header_attr__new(struct perf_counter_attr *attr) { struct perf_header_attr *self = malloc(sizeof(*self)); @@ -43,9 +42,8 @@ void perf_header_attr__add_id(struct perf_header_attr *self, u64 id) } /* - * + * Create new perf.data header: */ - struct perf_header *perf_header__new(void) { struct perf_header *self = malloc(sizeof(*self)); @@ -86,6 +84,46 @@ void perf_header__add_attr(struct perf_header *self, self->attr[pos] = attr; } +#define MAX_EVENT_NAME 64 + +struct perf_trace_event_type { + u64 event_id; + char name[MAX_EVENT_NAME]; +}; + +static int event_count; +static struct perf_trace_event_type *events; + +void perf_header__push_event(u64 id, const char *name) +{ + if (strlen(name) > MAX_EVENT_NAME) + printf("Event %s will be truncated\n", name); + + if (!events) { + events = malloc(sizeof(struct perf_trace_event_type)); + if (!events) + die("nomem"); + } else { + events = realloc(events, (event_count + 1) * sizeof(struct perf_trace_event_type)); + if (!events) + die("nomem"); + } + memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); + events[event_count].event_id = id; + strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); + event_count++; +} + +char *perf_header__find_event(u64 id) +{ + int i; + for (i = 0 ; i < event_count; i++) { + if (events[i].event_id == id) + return events[i].name; + } + return NULL; +} + static const char *__perf_magic = "PERFFILE"; #define PERF_MAGIC (*(u64 *)__perf_magic) @@ -106,6 +144,7 @@ struct perf_file_header { u64 attr_size; struct perf_file_section attrs; struct perf_file_section data; + struct perf_file_section event_types; }; static void do_write(int fd, void *buf, size_t size) @@ -154,6 +193,11 @@ void perf_header__write(struct perf_header *self, int fd) do_write(fd, &f_attr, sizeof(f_attr)); } + self->event_offset = lseek(fd, 0, SEEK_CUR); + self->event_size = event_count * sizeof(struct perf_trace_event_type); + if (events) + do_write(fd, events, self->event_size); + self->data_offset = lseek(fd, 0, SEEK_CUR); @@ -169,6 +213,10 @@ void perf_header__write(struct perf_header *self, int fd) .offset = self->data_offset, .size = self->data_size, }, + .event_types = { + .offset = self->event_offset, + .size = self->event_size, + }, }; lseek(fd, 0, SEEK_SET); @@ -234,6 +282,17 @@ struct perf_header *perf_header__read(int fd) lseek(fd, tmp, SEEK_SET); } + if (f_header.event_types.size) { + lseek(fd, f_header.event_types.offset, SEEK_SET); + events = malloc(f_header.event_types.size); + if (!events) + die("nomem"); + do_read(fd, events, f_header.event_types.size); + event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); + } + self->event_offset = f_header.event_types.offset; + self->event_size = f_header.event_types.size; + self->data_offset = f_header.data.offset; self->data_size = f_header.data.size; |