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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-26 13:27:23 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-26 13:28:40 -0300 |
| commit | c2a218c63ba36946aca5943c0c8ebd3a42e3dc4b (patch) | |
| tree | 1c428ee55eb4d9dc48e7026ad0841c519b016235 /tools | |
| parent | 042a181086077bdb83e38626b35fb96adbe45039 (diff) | |
| download | linux-c2a218c63ba36946aca5943c0c8ebd3a42e3dc4b.tar.bz2 | |
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/bench/mem-functions.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/tools/perf/bench/mem-functions.c b/tools/perf/bench/mem-functions.c index a91aa85d80ff..2b54d0f2672a 100644 --- a/tools/perf/bench/mem-functions.c +++ b/tools/perf/bench/mem-functions.c @@ -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; |