perf, x86: Change x86_pmu.{enable,disable} calling convention

Pass the full perf_event into the x86_pmu functions so that those may
make use of more than the hw_perf_event, and while doing this, remove the
superfluous second argument.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
LKML-Reference: <20100304140100.165166129@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 086127b..2dd704f 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -133,8 +133,8 @@ struct x86_pmu {
        int             (*handle_irq)(struct pt_regs *);
        void            (*disable_all)(void);
        void            (*enable_all)(void);
-       void            (*enable)(struct hw_perf_event *, int);
-       void            (*disable)(struct hw_perf_event *, int);
+       void            (*enable)(struct perf_event *);
+       void            (*disable)(struct perf_event *);
        unsigned        eventsel;
        unsigned        perfctr;
        u64             (*event_map)(int);
@@ -845,7 +845,7 @@ void hw_perf_enable(void)
                        set_bit(hwc->idx, cpuc->active_mask);
                        cpuc->events[hwc->idx] = event;
 
-                       x86_pmu.enable(hwc, hwc->idx);
+                       x86_pmu.enable(event);
                        perf_event_update_userpage(event);
                }
                cpuc->n_added = 0;
@@ -858,15 +858,16 @@ void hw_perf_enable(void)
        x86_pmu.enable_all();
 }
 
-static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc, int idx)
+static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc)
 {
-       (void)checking_wrmsrl(hwc->config_base + idx,
+       (void)checking_wrmsrl(hwc->config_base + hwc->idx,
                              hwc->config | ARCH_PERFMON_EVENTSEL_ENABLE);
 }
 
-static inline void x86_pmu_disable_event(struct hw_perf_event *hwc, int idx)
+static inline void x86_pmu_disable_event(struct perf_event *event)
 {
-       (void)checking_wrmsrl(hwc->config_base + idx, hwc->config);
+       struct hw_perf_event *hwc = &event->hw;
+       (void)checking_wrmsrl(hwc->config_base + hwc->idx, hwc->config);
 }
 
 static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left);
@@ -927,11 +928,11 @@ x86_perf_event_set_period(struct perf_event *event)
        return ret;
 }
 
-static void x86_pmu_enable_event(struct hw_perf_event *hwc, int idx)
+static void x86_pmu_enable_event(struct perf_event *event)
 {
        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
        if (cpuc->enabled)
-               __x86_pmu_enable_event(hwc, idx);
+               __x86_pmu_enable_event(&event->hw);
 }
 
 /*
@@ -974,13 +975,11 @@ static int x86_pmu_enable(struct perf_event *event)
 
 static int x86_pmu_start(struct perf_event *event)
 {
-       struct hw_perf_event *hwc = &event->hw;
-
-       if (hwc->idx == -1)
+       if (event->hw.idx == -1)
                return -EAGAIN;
 
        x86_perf_event_set_period(event);
-       x86_pmu.enable(hwc, hwc->idx);
+       x86_pmu.enable(event);
 
        return 0;
 }
@@ -994,7 +993,7 @@ static void x86_pmu_unthrottle(struct perf_event *event)
                                cpuc->events[hwc->idx] != event))
                return;
 
-       x86_pmu.enable(hwc, hwc->idx);
+       x86_pmu.enable(event);
 }
 
 void perf_event_print_debug(void)
@@ -1059,7 +1058,7 @@ static void x86_pmu_stop(struct perf_event *event)
         * could reenable again:
         */
        clear_bit(idx, cpuc->active_mask);
-       x86_pmu.disable(hwc, idx);
+       x86_pmu.disable(event);
 
        /*
         * Drain the remaining delta count out of a event
@@ -1127,7 +1126,7 @@ static int x86_pmu_handle_irq(struct pt_regs *regs)
                        continue;
 
                if (perf_event_overflow(event, 1, &data, regs))
-                       x86_pmu.disable(hwc, idx);
+                       x86_pmu.disable(event);
        }
 
        if (handled)

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index a4c9f16..a840948 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -548,9 +548,9 @@ static inline void intel_pmu_ack_status(u64 ack)
 }
 
 static inline void
-intel_pmu_disable_fixed(struct hw_perf_event *hwc, int __idx)
+intel_pmu_disable_fixed(struct hw_perf_event *hwc)
 {
-       int idx = __idx - X86_PMC_IDX_FIXED;
+       int idx = hwc->idx - X86_PMC_IDX_FIXED;
        u64 ctrl_val, mask;
 
        mask = 0xfULL << (idx * 4);
@@ -621,26 +621,28 @@ static void intel_pmu_drain_bts_buffer(void)
 }
 
 static inline void
-intel_pmu_disable_event(struct hw_perf_event *hwc, int idx)
+intel_pmu_disable_event(struct perf_event *event)
 {
-       if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) {
+       struct hw_perf_event *hwc = &event->hw;
+
+       if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
                intel_pmu_disable_bts();
                intel_pmu_drain_bts_buffer();
                return;
        }
 
        if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
-               intel_pmu_disable_fixed(hwc, idx);
+               intel_pmu_disable_fixed(hwc);
                return;
        }
 
-       x86_pmu_disable_event(hwc, idx);
+       x86_pmu_disable_event(event);
 }
 
 static inline void
-intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx)
+intel_pmu_enable_fixed(struct hw_perf_event *hwc)
 {
-       int idx = __idx - X86_PMC_IDX_FIXED;
+       int idx = hwc->idx - X86_PMC_IDX_FIXED;
        u64 ctrl_val, bits, mask;
        int err;
 
@@ -670,9 +672,11 @@ intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx)
        err = checking_wrmsrl(hwc->config_base, ctrl_val);
 }
 
-static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx)
+static void intel_pmu_enable_event(struct perf_event *event)
 {
-       if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) {
+       struct hw_perf_event *hwc = &event->hw;
+
+       if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
                if (!__get_cpu_var(cpu_hw_events).enabled)
                        return;
 
@@ -681,11 +685,11 @@ static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx)
        }
 
        if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
-               intel_pmu_enable_fixed(hwc, idx);
+               intel_pmu_enable_fixed(hwc);
                return;
        }
 
-       __x86_pmu_enable_event(hwc, idx);
+       __x86_pmu_enable_event(hwc);
 }
 
 /*
@@ -771,7 +775,7 @@ again:
                data.period = event->hw.last_period;
 
                if (perf_event_overflow(event, 1, &data, regs))
-                       intel_pmu_disable_event(&event->hw, bit);
+                       intel_pmu_disable_event(event);
        }
 
        intel_pmu_ack_status(ack);

diff --git a/arch/x86/kernel/cpu/perf_event_p6.c b/arch/x86/kernel/cpu/perf_event_p6.c
index a4e67b9..a330485 100644 (file)
--- a/arch/x86/kernel/cpu/perf_event_p6.c
+++ b/arch/x86/kernel/cpu/perf_event_p6.c
@@ -77,27 +77,29 @@ static void p6_pmu_enable_all(void)
 }
 
 static inline void
-p6_pmu_disable_event(struct hw_perf_event *hwc, int idx)
+p6_pmu_disable_event(struct perf_event *event)
 {
        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct hw_perf_event *hwc = &event->hw;
        u64 val = P6_NOP_EVENT;
 
        if (cpuc->enabled)
                val |= ARCH_PERFMON_EVENTSEL_ENABLE;
 
-       (void)checking_wrmsrl(hwc->config_base + idx, val);
+       (void)checking_wrmsrl(hwc->config_base + hwc->idx, val);
 }
 
-static void p6_pmu_enable_event(struct hw_perf_event *hwc, int idx)
+static void p6_pmu_enable_event(struct perf_event *event)
 {
        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+       struct hw_perf_event *hwc = &event->hw;
        u64 val;
 
        val = hwc->config;
        if (cpuc->enabled)
                val |= ARCH_PERFMON_EVENTSEL_ENABLE;
 
-       (void)checking_wrmsrl(hwc->config_base + idx, val);
+       (void)checking_wrmsrl(hwc->config_base + hwc->idx, val);
 }
 
 static __initconst struct x86_pmu p6_pmu = {