perf: export perf_trace_regs and perf_arch_fetch_caller_regs
[linux-2.6.git] / arch / x86 / kernel / cpu / perf_event.c
index c6bde7d..7645fae 100644 (file)
@@ -811,7 +811,6 @@ void hw_perf_enable(void)
                 * step2: reprogram moved events into new counters
                 */
                for (i = 0; i < n_running; i++) {
-
                        event = cpuc->event_list[i];
                        hwc = &event->hw;
 
@@ -826,21 +825,16 @@ void hw_perf_enable(void)
                                continue;
 
                        x86_pmu_stop(event);
-
-                       hwc->idx = -1;
                }
 
                for (i = 0; i < cpuc->n_events; i++) {
-
                        event = cpuc->event_list[i];
                        hwc = &event->hw;
 
-                       if (i < n_running &&
-                           match_prev_assignment(hwc, cpuc, i))
-                               continue;
-
-                       if (hwc->idx == -1)
+                       if (!match_prev_assignment(hwc, cpuc, i))
                                x86_assign_hw_event(event, cpuc, i);
+                       else if (i < n_running)
+                               continue;
 
                        x86_pmu_start(event);
                }
@@ -1719,3 +1713,4 @@ void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int ski
        regs->cs = __KERNEL_CS;
        local_save_flags(regs->flags);
 }
+EXPORT_SYMBOL_GPL(perf_arch_fetch_caller_regs);