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perf tools: Introduce event selectors

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Out of ad-hoc code and global arrays with hard coded sizes.

This is the first step on having a library that will be first
used on regression tests in the 'perf test' tool.

[acme@felicio linux]$ size /tmp/perf.before
   text	   data	    bss	    dec	    hex	filename
1273776	  97384	5104416	6475576	 62cf38	/tmp/perf.before
[acme@felicio linux]$ size /tmp/perf.new
   text	   data	    bss	    dec	    hex	filename
1275422	  97416	1392416	2765254	 2a31c6	/tmp/perf.new

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-01-03 16:39:04 -02:00
parent 56f4c40034
commit 69aad6f1ee
14 changed files with 432 additions and 244 deletions
Download patch file Download diff file Expand all files Collapse all files

30
tools/perf/util/trace-event-info.c
View file

@ -34,11 +34,13 @@
#include <ctype.h>
#include <errno.h>
#include <stdbool.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include "../perf.h"
#include "trace-event.h"
#include "debugfs.h"
#include "evsel.h"
#define VERSION "0.5"
@ -469,16 +471,17 @@ out:
}
static struct tracepoint_path *
get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
get_tracepoints_path(struct list_head *pattrs)
{
struct tracepoint_path path, *ppath = &path;
int i, nr_tracepoints = 0;
struct perf_evsel *pos;
int nr_tracepoints = 0;
for (i = 0; i < nb_events; i++) {
if (pattrs[i].type != PERF_TYPE_TRACEPOINT)
list_for_each_entry(pos, pattrs, node) {
if (pos->attr.type != PERF_TYPE_TRACEPOINT)
continue;
++nr_tracepoints;
ppath->next = tracepoint_id_to_path(pattrs[i].config);
ppath->next = tracepoint_id_to_path(pos->attr.config);
if (!ppath->next)
die("%s\n", "No memory to alloc tracepoints list");
ppath = ppath->next;
@ -487,21 +490,21 @@ get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
return nr_tracepoints > 0 ? path.next : NULL;
}
bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events)
bool have_tracepoints(struct list_head *pattrs)
{
int i;
struct perf_evsel *pos;
for (i = 0; i < nb_events; i++)
if (pattrs[i].type == PERF_TYPE_TRACEPOINT)
list_for_each_entry(pos, pattrs, node)
if (pos->attr.type == PERF_TYPE_TRACEPOINT)
return true;
return false;
}
int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
int read_tracing_data(int fd, struct list_head *pattrs)
{
char buf[BUFSIZ];
struct tracepoint_path *tps = get_tracepoints_path(pattrs, nb_events);
struct tracepoint_path *tps = get_tracepoints_path(pattrs);
/*
* What? No tracepoints? No sense writing anything here, bail out.
@ -545,14 +548,13 @@ int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
return 0;
}
ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs,
int nb_events)
ssize_t read_tracing_data_size(int fd, struct list_head *pattrs)
{
ssize_t size;
int err = 0;
calc_data_size = 1;
err = read_tracing_data(fd, pattrs, nb_events);
err = read_tracing_data(fd, pattrs);
size = calc_data_size - 1;
calc_data_size = 0;