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authorPaul Mackerras <paulus@samba.org>2010-09-09 19:02:40 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2010-11-22 11:03:00 -0800
commita5f0a8deb4dbf091ae60377459c751663a0bf240 (patch)
tree20a8094abf5fab5874e428b9f4803cedd6175b0b /arch/powerpc
parent603cb849c8c657e08cead0bb6c93e1fa88025c78 (diff)
powerpc/perf: Fix sampling enable for PPC970
commit 9f5f9ffe50e90ed73040d2100db8bfc341cee352 upstream. The logic to distinguish marked instruction events from ordinary events on PPC970 and derivatives was flawed. The result is that instruction sampling didn't get enabled in the PMU for some marked instruction events, so they would never trigger. This fixes it by adding the appropriate break statements in the switch statement. Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/ppc970-pmu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c
index 8eff48e20db..3fee685de4d 100644
--- a/arch/powerpc/kernel/ppc970-pmu.c
+++ b/arch/powerpc/kernel/ppc970-pmu.c
@@ -169,9 +169,11 @@ static int p970_marked_instr_event(u64 event)
switch (unit) {
case PM_VPU:
mask = 0x4c; /* byte 0 bits 2,3,6 */
+ break;
case PM_LSU0:
/* byte 2 bits 0,2,3,4,6; all of byte 1 */
mask = 0x085dff00;
+ break;
case PM_LSU1L:
mask = 0x50 << 24; /* byte 3 bits 4,6 */
break;