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authorMichael Ellerman <michael@ellerman.id.au>2013-04-25 19:28:25 (GMT)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-04-26 06:11:08 (GMT)
commit33904054b40832908dfaeeece282f2f0ff636f14 (patch)
tree69651a659197f703c907cf94cd02b004e79aad21 /arch/powerpc/perf
parent5682c460264149b258b82105f0eefcb9878aa1e7 (diff)
powerpc/perf: Add an accessor for regs->result
Add an accessor for regs->result so we can use it to store more flags in future. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/core-book3s.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 2417fe2..5d30001 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -89,6 +89,11 @@ static inline int siar_valid(struct pt_regs *regs)
#endif /* CONFIG_PPC32 */
+static bool regs_use_siar(struct pt_regs *regs)
+{
+ return !!(regs->result & 1);
+}
+
/*
* Things that are specific to 64-bit implementations.
*/
@@ -162,7 +167,7 @@ static inline u32 perf_flags_from_msr(struct pt_regs *regs)
static inline u32 perf_get_misc_flags(struct pt_regs *regs)
{
- unsigned long use_siar = regs->result;
+ bool use_siar = regs_use_siar(regs);
if (!use_siar)
return perf_flags_from_msr(regs);
@@ -1425,7 +1430,7 @@ unsigned long perf_misc_flags(struct pt_regs *regs)
*/
unsigned long perf_instruction_pointer(struct pt_regs *regs)
{
- unsigned long use_siar = regs->result;
+ bool use_siar = regs_use_siar(regs);
if (use_siar && siar_valid(regs))
return mfspr(SPRN_SIAR) + perf_ip_adjust(regs);

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