Merge tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd

[karo-tx-linux.git] / arch / x86 / kernel / cpu / perf_event_intel_lbr.c

diff --git a/arch/x86/kernel/cpu/perf_event_intel_lbr.c b/arch/x86/kernel/cpu/perf_event_intel_lbr.c
index bfd0b717e944ce012b7a0abe19c89f5294d284e1..659f01e165d57520f33b09ba68818f72cd206a4d 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_intel_lbr.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_lbr.c
@@ -239,7 +239,7 @@ static void __intel_pmu_lbr_restore(struct x86_perf_task_context *task_ctx)
        }
 
        mask = x86_pmu.lbr_nr - 1;
-       tos = intel_pmu_lbr_tos();
+       tos = task_ctx->tos;
        for (i = 0; i < tos; i++) {
                lbr_idx = (tos - i) & mask;
                wrmsrl(x86_pmu.lbr_from + lbr_idx, task_ctx->lbr_from[i]);
@@ -247,6 +247,7 @@ static void __intel_pmu_lbr_restore(struct x86_perf_task_context *task_ctx)
                if (x86_pmu.intel_cap.lbr_format == LBR_FORMAT_INFO)
                        wrmsrl(MSR_LBR_INFO_0 + lbr_idx, task_ctx->lbr_info[i]);
        }
+       wrmsrl(x86_pmu.lbr_tos, tos);
        task_ctx->lbr_stack_state = LBR_NONE;
 }
 
@@ -270,6 +271,7 @@ static void __intel_pmu_lbr_save(struct x86_perf_task_context *task_ctx)
                if (x86_pmu.intel_cap.lbr_format == LBR_FORMAT_INFO)
                        rdmsrl(MSR_LBR_INFO_0 + lbr_idx, task_ctx->lbr_info[i]);
        }
+       task_ctx->tos = tos;
        task_ctx->lbr_stack_state = LBR_VALID;
 }