When run "perf record -e", the number of samples showed up is wrong on some 32 bit systems, i.e. powerpc and arm.
For example, run the below commands on 32 bit powerpc:
perf probe -x /lib/libc.so.6 malloc perf record -e probe_libc:malloc -a ls perf.data [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.036 MB perf.data (13829241621624967218 samples) ]
Actually, "perf script" just shows 21 samples. The number of samples is also absurd since samples is long type, but it is printed as PRIu64.
Build test is run on x86-64, x86, aarch64, arm, mips, ppc and ppc64.
Signed-off-by: Yang Shi yang.shi@linaro.org --- tools/perf/builtin-record.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 142eeb3..e54aa4c 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -49,7 +49,7 @@ struct record { int realtime_prio; bool no_buildid; bool no_buildid_cache; - long samples; + unsigned long long samples; };
static int record__write(struct record *rec, void *bf, size_t size)