perf, x86: Call x86_setup_perfctr() from .hw_config()

The perfctr setup calls are in the corresponding .hw_config()
functions now. This makes it possible to introduce config functions
for other pmu events that are not perfctr specific.

Also, all of a sudden the code looks much nicer.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1271190201-25705-4-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 3 insertions, 8 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 3d3bceb9e830..c2c1e10f7b03 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -505,7 +505,7 @@ static int x86_pmu_hw_config(struct perf_event *event)
         if (event->attr.type == PERF_TYPE_RAW)
                 event->hw.config |= event->attr.config & X86_RAW_EVENT_MASK;
 
-        return 0;
+        return x86_setup_perfctr(event);
 }
 
 /*
@@ -543,12 +543,7 @@ static int __hw_perf_event_init(struct perf_event *event)
         event->hw.last_cpu = -1;
         event->hw.last_tag = ~0ULL;
 
-        /* Processor specifics */
-        err = x86_pmu.hw_config(event);
-        if (err)
-                return err;
-
-        return x86_setup_perfctr(event);
+        return x86_pmu.hw_config(event);
 }
 
 static void x86_pmu_disable_all(void)
diff --git a/arch/x86/kernel/cpu/perf_event_p4.c b/arch/x86/kernel/cpu/perf_event_p4.c
index 15367cce66bd..9e002054cb5f 100644
--- a/arch/x86/kernel/cpu/perf_event_p4.c
+++ b/arch/x86/kernel/cpu/perf_event_p4.c
@@ -455,7 +455,7 @@ static int p4_hw_config(struct perf_event *event)
                 (p4_config_pack_escr(P4_ESCR_MASK_HT) |
                  p4_config_pack_cccr(P4_CCCR_MASK_HT));
 
-        return 0;
+        return x86_setup_perfctr(event);
 }
 
 static inline void p4_pmu_clear_cccr_ovf(struct hw_perf_event *hwc)