From 15268138e334bd0362f8395edac4822351714a22 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Thu, 17 Jan 2013 09:11:30 -0800 Subject: [PATCH] perf tools: Fix PMU format parsing test failure On POWER, the 'perf format parsing' test always fails. Looks like it is because memset() is being passed number of longs rather than number of bytes. It is interesting that the test always passes on my x86 box. With this patch, the test passes on POWER and continues to pass on x86. Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Anton Blanchard Cc: Jiri Olsa Cc: Paul Mackerras Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130117172814.GA18882@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/include/linux/bitops.h | 1 + tools/perf/util/pmu.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h index a55d8cf083c..45cf10a562b 100644 --- a/tools/perf/util/include/linux/bitops.h +++ b/tools/perf/util/include/linux/bitops.h @@ -14,6 +14,7 @@ #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) #define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u64)) #define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u32)) +#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE) #define for_each_set_bit(bit, addr, size) \ for ((bit) = find_first_bit((addr), (size)); \ diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 9bdc60c6f13..b93ff146766 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -548,7 +548,7 @@ void perf_pmu__set_format(unsigned long *bits, long from, long to) if (!to) to = from; - memset(bits, 0, BITS_TO_LONGS(PERF_PMU_FORMAT_BITS)); + memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); for (b = from; b <= to; b++) set_bit(b, bits); } -- 2.20.1