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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-03-03 09:55:04 -0500
committerIngo Molnar <mingo@elte.hu>2010-03-10 07:22:23 -0500
commitdc1d628a67a8f042e711ea5accc0beedc3ef0092 (patch)
tree728f72a5f9a8368b225890a95ea947c1c8cda301 /arch/powerpc
parent548b84166917d6f5e2296123b85ad24aecd3801d (diff)
perf: Provide generic perf_sample_data initialization
This makes it easier to extend perf_sample_data and fixes a bug on arm and sparc, which failed to set ->raw to NULL, which can cause crashes when combined with PERF_SAMPLE_RAW. It also optimizes PowerPC and tracepoint, because the struct initialization is forced to zero out the whole structure. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Jean Pihet <jpihet@mvista.com> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: Jamie Iles <jamie.iles@picochip.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> Cc: stable@kernel.org LKML-Reference: <20100304140100.315416040@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/perf_event.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index b6cf8f1f4d35..5120bd44f69a 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -1164,10 +1164,10 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
1164 * Finally record data if requested. 1164 * Finally record data if requested.
1165 */ 1165 */
1166 if (record) { 1166 if (record) {
1167 struct perf_sample_data data = { 1167 struct perf_sample_data data;
1168 .addr = ~0ULL, 1168
1169 .period = event->hw.last_period, 1169 perf_sample_data_init(&data, ~0ULL);
1170 }; 1170 data.period = event->hw.last_period;
1171 1171
1172 if (event->attr.sample_type & PERF_SAMPLE_ADDR) 1172 if (event->attr.sample_type & PERF_SAMPLE_ADDR)
1173 perf_get_data_addr(regs, &data.addr); 1173 perf_get_data_addr(regs, &data.addr);