powerpc: perf_event: Log invalid data addresses as all 1s

When we take an exception and the SDAR isn't synchronised we currently
log 0 as the address.  Unfortunately this is a pretty common value, so
use ~0UL instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index bbcbae1..73c3b73 100644 (file)
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -1162,7 +1162,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
         */
        if (record) {
                struct perf_sample_data data = {
-                       .addr   = 0,
+                       .addr   = ~0ULL,
                        .period = event->hw.last_period,
                };