perf tools: Unify page_size usage

Making page_size global from the util object.

Removing the not needed one.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379003976-5839-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -70,7 +70,6 @@ struct perf_record {
 	struct perf_session	*session;
 	const char		*progname;
 	int			output;
-	unsigned int		page_size;
 	int			realtime_prio;
 	bool			no_buildid;
 	bool			no_buildid_cache;
@@ -119,7 +118,7 @@ static int perf_record__mmap_read(struct perf_record *rec,
 {
 	unsigned int head = perf_mmap__read_head(md);
 	unsigned int old = md->prev;
-	unsigned char *data = md->base + rec->page_size;
+	unsigned char *data = md->base + page_size;
 	unsigned long size;
 	void *buf;
 	int rc = 0;
@@ -360,8 +359,6 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 
 	rec->progname = argv[0];
 
-	rec->page_size = sysconf(_SC_PAGE_SIZE);
-
 	on_exit(perf_record__sig_exit, rec);
 	signal(SIGCHLD, sig_handler);
 	signal(SIGINT, sig_handler);

tools/perf/perf.c

@@ -456,6 +456,7 @@ int main(int argc, const char **argv)
 {
 	const char *cmd;
 
+	/* The page_size is placed in util object. */
 	page_size = sysconf(_SC_PAGE_SIZE);
 
 	cmd = perf_extract_argv0_path(argv[0]);

tools/perf/util/python.c

@@ -1036,6 +1036,7 @@ PyMODINIT_FUNC initperf(void)
 	    pyrf_cpu_map__setup_types() < 0)
 		return;
 
+	/* The page_size is placed in util object. */
 	page_size = sysconf(_SC_PAGE_SIZE);
 
 	Py_INCREF(&pyrf_evlist__type);