diff options
author | Jiri Olsa <jolsa@kernel.org> | 2017-01-09 10:51:55 +0100 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-01-11 16:48:01 -0300 |
commit | 9808143ba2e54818a3cf445d9b69b3f5f15451ee (patch) | |
tree | 00c2425c5e06608fda53fc24d875cd4e1dabce63 /tools/perf/tests/unit_number__scnprintf.c | |
parent | e978be9ea2990f1af60fe10eadd2312a6250e0b8 (diff) |
perf tools: Add unit_number__scnprintf function
Add unit_number__scnprintf function to display size units and use it in
-m option info message.
Before:
$ perf record -m 10M ls
rounding mmap pages size to 16777216 bytes (4096 pages)
...
After:
$ perf record -m 10M ls
rounding mmap pages size to 16M (4096 pages)
...
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1483955520-29063-2-git-send-email-jolsa@kernel.org
[ Rename it to unit_number__scnprintf for consistency ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/unit_number__scnprintf.c')
-rw-r--r-- | tools/perf/tests/unit_number__scnprintf.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tools/perf/tests/unit_number__scnprintf.c b/tools/perf/tests/unit_number__scnprintf.c new file mode 100644 index 000000000000..623c2aa53c4a --- /dev/null +++ b/tools/perf/tests/unit_number__scnprintf.c @@ -0,0 +1,37 @@ +#include <linux/compiler.h> +#include <linux/types.h> +#include "tests.h" +#include "util.h" +#include "debug.h" + +int test__unit_number__scnprint(int subtest __maybe_unused) +{ + struct { + u64 n; + const char *str; + } test[] = { + { 1, "1B" }, + { 10*1024, "10K" }, + { 20*1024*1024, "20M" }, + { 30*1024*1024*1024ULL, "30G" }, + { 0, "0B" }, + { 0, NULL }, + }; + unsigned i = 0; + + while (test[i].str) { + char buf[100]; + + unit_number__scnprintf(buf, sizeof(buf), test[i].n); + + pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n", + test[i].n, test[i].str, buf); + + if (strcmp(test[i].str, buf)) + return TEST_FAIL; + + i++; + } + + return TEST_OK; +} |