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perf bench: Remove one more die() call 

Propagate the error instead.

Cc: David Ahern <dsahern@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-z6erjg35d1gekevwujoa0223@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2016-04-26 13:27:23 -03:00
parent 042a181086
commit c2a218c63b
1 changed files with 15 additions and 7 deletions
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22
tools/perf/bench/mem-functions.c
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@ -6,6 +6,7 @@
* Written by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
*/
#include "debug.h"
#include "../perf.h"
#include "../util/util.h"
#include <subcmd/parse-options.h>
@ -63,14 +64,16 @@ static struct perf_event_attr cycle_attr = {
.config = PERF_COUNT_HW_CPU_CYCLES
};
static void init_cycles(void)
static int init_cycles(void)
{
cycles_fd = sys_perf_event_open(&cycle_attr, getpid(), -1, -1, perf_event_open_cloexec_flag());
if (cycles_fd < 0 && errno == ENOSYS)
die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
else
BUG_ON(cycles_fd < 0);
if (cycles_fd < 0 && errno == ENOSYS) {
pr_debug("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
return -1;
}
return cycles_fd;
}
static u64 get_cycles(void)
@ -155,8 +158,13 @@ static int bench_mem_common(int argc, const char **argv, struct bench_mem_info *
argc = parse_options(argc, argv, options, info->usage, 0);
if (use_cycles)
init_cycles();
if (use_cycles) {
i = init_cycles();
if (i < 0) {
fprintf(stderr, "Failed to open cycles counter\n");
return i;
}
}
size = (size_t)perf_atoll((char *)size_str);
size_total = (double)size * nr_loops;