perf tools: Introduce event selectors

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>

1 files changed, 4 insertions, 5 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 16a16021eaa6..ecb5a8444f42 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -461,7 +461,7 @@ static int perf_header__adds_write(struct perf_header *self, int fd)
 
                 /* Write trace info */
                 trace_sec->offset = lseek(fd, 0, SEEK_CUR);
-                read_tracing_data(fd, attrs, nr_counters);
+                read_tracing_data(fd, &evsel_list);
                 trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
         }
 
@@ -1131,8 +1131,7 @@ int event__process_event_type(event_t *self,
         return 0;
 }
 
-int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
-                                   int nb_events,
+int event__synthesize_tracing_data(int fd, struct list_head *pattrs,
                                    event__handler_t process,
                                    struct perf_session *session __unused)
 {
@@ -1143,7 +1142,7 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
         memset(&ev, 0, sizeof(ev));
 
         ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
-        size = read_tracing_data_size(fd, pattrs, nb_events);
+        size = read_tracing_data_size(fd, pattrs);
         if (size <= 0)
                 return size;
         aligned_size = ALIGN(size, sizeof(u64));
@@ -1153,7 +1152,7 @@ int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
 
         process(&ev, NULL, session);
 
-        err = read_tracing_data(fd, pattrs, nb_events);
+        err = read_tracing_data(fd, pattrs);
         write_padded(fd, NULL, 0, padding);
 
         return aligned_size;