The MSR variable type can be "unsigned int", which uses less memory than
the longer unsigned long. The lbr nr won't be a negative number, so make
it "unsigned int" as well.
Suggested-by: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Wei Wang <wei.w.w...@intel.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Andi Kleen <a...@linux.intel.com>
---
arch/x86/events/perf_event.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index a6ac2f4..186c1c7 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -682,8 +682,8 @@ struct x86_pmu {
/*
* Intel LBR
*/
- unsigned long lbr_tos, lbr_from, lbr_to; /* MSR base regs */
- int lbr_nr; /* hardware stack size */
+ unsigned int lbr_tos, lbr_from, lbr_to,
+ lbr_nr; /* lbr stack and size */
u64 lbr_sel_mask; /* LBR_SELECT valid bits */
const int *lbr_sel_map; /* lbr_select mappings */
bool lbr_double_abort; /* duplicated lbr aborts */
--
2.7.4
