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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:30:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:30:02 -0800
commitb1286f4e9ac14c8973140b338b4d3c5691264d3b (patch)
tree5a67788bb2276cd67230d24b5a6994ddafb10707 /arch/arm/kernel/perf_event_v6.c
parent6facac1ab68fbf9cbad31a9d521f3a0d6aa9470e (diff)
parent0fa5d3996dbda1ee9653c43d39b7ef159fb57ee7 (diff)
downloadblackbird-op-linux-b1286f4e9ac14c8973140b338b4d3c5691264d3b.tar.gz
blackbird-op-linux-b1286f4e9ac14c8973140b338b4d3c5691264d3b.zip
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King: "Here's the updates for ARM for this merge window, which cover quite a variety of areas. There's a bunch of patch series from Will tackling various bugs like the PROT_NONE handling, ASID allocation, cluster boot protocol and ASID TLB tagging updates. We move to a build-time sorted exception table rather than doing the sorting at run-time, add support for the secure computing filter, and some updates to the perf code. We also have sorted out the placement of some headers, fixed some build warnings, fixed some hotplug problems with the per-cpu TWD code." * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (73 commits) ARM: 7594/1: Add .smp entry for REALVIEW_EB ARM: 7599/1: head: Remove boot-time HYP mode check for v5 and below ARM: 7598/1: net: bpf_jit_32: fix sp-relative load/stores offsets. ARM: 7595/1: syscall: rework ordering in syscall_trace_exit ARM: 7596/1: mmci: replace readsl/writesl with ioread32_rep/iowrite32_rep ARM: 7597/1: net: bpf_jit_32: fix kzalloc gfp/size mismatch. ARM: 7593/1: nommu: do not enable DCACHE_WORD_ACCESS when !CONFIG_MMU ARM: 7592/1: nommu: prevent generation of kernel unaligned memory accesses ARM: 7591/1: nommu: Enable the strict alignment (CR_A) bit only if ARCH < v6 ARM: 7590/1: /proc/interrupts: limit the display of IPIs to online CPUs only ARM: 7587/1: implement optimized percpu variable access ARM: 7589/1: integrator: pass the lm resource to amba ARM: 7588/1: amba: create a resource parent registrator ARM: 7582/2: rename kvm_seq to vmalloc_seq so to avoid confusion with KVM ARM: 7585/1: kernel: fix nr_cpu_ids check in DT logical map init ARM: 7584/1: perf: fix link error when CONFIG_HW_PERF_EVENTS is not selected ARM: gic: use a private mapping for CPU target interfaces ARM: kernel: add logical mappings look-up ARM: kernel: add cpu logical map DT init in setup_arch ARM: kernel: add device tree init map function ...
Diffstat (limited to 'arch/arm/kernel/perf_event_v6.c')
-rw-r--r--arch/arm/kernel/perf_event_v6.c126
1 files changed, 63 insertions, 63 deletions
diff --git a/arch/arm/kernel/perf_event_v6.c b/arch/arm/kernel/perf_event_v6.c
index 6ccc07971745..f3e22ff8b6a2 100644
--- a/arch/arm/kernel/perf_event_v6.c
+++ b/arch/arm/kernel/perf_event_v6.c
@@ -401,9 +401,10 @@ armv6_pmcr_counter_has_overflowed(unsigned long pmcr,
return ret;
}
-static inline u32
-armv6pmu_read_counter(int counter)
+static inline u32 armv6pmu_read_counter(struct perf_event *event)
{
+ struct hw_perf_event *hwc = &event->hw;
+ int counter = hwc->idx;
unsigned long value = 0;
if (ARMV6_CYCLE_COUNTER == counter)
@@ -418,10 +419,11 @@ armv6pmu_read_counter(int counter)
return value;
}
-static inline void
-armv6pmu_write_counter(int counter,
- u32 value)
+static inline void armv6pmu_write_counter(struct perf_event *event, u32 value)
{
+ struct hw_perf_event *hwc = &event->hw;
+ int counter = hwc->idx;
+
if (ARMV6_CYCLE_COUNTER == counter)
asm volatile("mcr p15, 0, %0, c15, c12, 1" : : "r"(value));
else if (ARMV6_COUNTER0 == counter)
@@ -432,12 +434,13 @@ armv6pmu_write_counter(int counter,
WARN_ONCE(1, "invalid counter number (%d)\n", counter);
}
-static void
-armv6pmu_enable_event(struct hw_perf_event *hwc,
- int idx)
+static void armv6pmu_enable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
+ struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
+ struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
+ int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = 0;
@@ -473,7 +476,8 @@ armv6pmu_handle_irq(int irq_num,
{
unsigned long pmcr = armv6_pmcr_read();
struct perf_sample_data data;
- struct pmu_hw_events *cpuc;
+ struct arm_pmu *cpu_pmu = (struct arm_pmu *)dev;
+ struct pmu_hw_events *cpuc = cpu_pmu->get_hw_events();
struct pt_regs *regs;
int idx;
@@ -489,7 +493,6 @@ armv6pmu_handle_irq(int irq_num,
*/
armv6_pmcr_write(pmcr);
- cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
@@ -506,13 +509,13 @@ armv6pmu_handle_irq(int irq_num,
continue;
hwc = &event->hw;
- armpmu_event_update(event, hwc, idx);
+ armpmu_event_update(event);
perf_sample_data_init(&data, 0, hwc->last_period);
- if (!armpmu_event_set_period(event, hwc, idx))
+ if (!armpmu_event_set_period(event))
continue;
if (perf_event_overflow(event, &data, regs))
- cpu_pmu->disable(hwc, idx);
+ cpu_pmu->disable(event);
}
/*
@@ -527,8 +530,7 @@ armv6pmu_handle_irq(int irq_num,
return IRQ_HANDLED;
}
-static void
-armv6pmu_start(void)
+static void armv6pmu_start(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@@ -540,8 +542,7 @@ armv6pmu_start(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
-static void
-armv6pmu_stop(void)
+static void armv6pmu_stop(struct arm_pmu *cpu_pmu)
{
unsigned long flags, val;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
@@ -555,10 +556,11 @@ armv6pmu_stop(void)
static int
armv6pmu_get_event_idx(struct pmu_hw_events *cpuc,
- struct hw_perf_event *event)
+ struct perf_event *event)
{
+ struct hw_perf_event *hwc = &event->hw;
/* Always place a cycle counter into the cycle counter. */
- if (ARMV6_PERFCTR_CPU_CYCLES == event->config_base) {
+ if (ARMV6_PERFCTR_CPU_CYCLES == hwc->config_base) {
if (test_and_set_bit(ARMV6_CYCLE_COUNTER, cpuc->used_mask))
return -EAGAIN;
@@ -579,12 +581,13 @@ armv6pmu_get_event_idx(struct pmu_hw_events *cpuc,
}
}
-static void
-armv6pmu_disable_event(struct hw_perf_event *hwc,
- int idx)
+static void armv6pmu_disable_event(struct perf_event *event)
{
unsigned long val, mask, evt, flags;
+ struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
+ struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
+ int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;
@@ -613,12 +616,13 @@ armv6pmu_disable_event(struct hw_perf_event *hwc,
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
-static void
-armv6mpcore_pmu_disable_event(struct hw_perf_event *hwc,
- int idx)
+static void armv6mpcore_pmu_disable_event(struct perf_event *event)
{
unsigned long val, mask, flags, evt = 0;
+ struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
+ struct hw_perf_event *hwc = &event->hw;
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
+ int idx = hwc->idx;
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;
@@ -649,24 +653,22 @@ static int armv6_map_event(struct perf_event *event)
&armv6_perf_cache_map, 0xFF);
}
-static struct arm_pmu armv6pmu = {
- .name = "v6",
- .handle_irq = armv6pmu_handle_irq,
- .enable = armv6pmu_enable_event,
- .disable = armv6pmu_disable_event,
- .read_counter = armv6pmu_read_counter,
- .write_counter = armv6pmu_write_counter,
- .get_event_idx = armv6pmu_get_event_idx,
- .start = armv6pmu_start,
- .stop = armv6pmu_stop,
- .map_event = armv6_map_event,
- .num_events = 3,
- .max_period = (1LLU << 32) - 1,
-};
-
-static struct arm_pmu *__devinit armv6pmu_init(void)
+static int __devinit armv6pmu_init(struct arm_pmu *cpu_pmu)
{
- return &armv6pmu;
+ cpu_pmu->name = "v6";
+ cpu_pmu->handle_irq = armv6pmu_handle_irq;
+ cpu_pmu->enable = armv6pmu_enable_event;
+ cpu_pmu->disable = armv6pmu_disable_event;
+ cpu_pmu->read_counter = armv6pmu_read_counter;
+ cpu_pmu->write_counter = armv6pmu_write_counter;
+ cpu_pmu->get_event_idx = armv6pmu_get_event_idx;
+ cpu_pmu->start = armv6pmu_start;
+ cpu_pmu->stop = armv6pmu_stop;
+ cpu_pmu->map_event = armv6_map_event;
+ cpu_pmu->num_events = 3;
+ cpu_pmu->max_period = (1LLU << 32) - 1;
+
+ return 0;
}
/*
@@ -683,33 +685,31 @@ static int armv6mpcore_map_event(struct perf_event *event)
&armv6mpcore_perf_cache_map, 0xFF);
}
-static struct arm_pmu armv6mpcore_pmu = {
- .name = "v6mpcore",
- .handle_irq = armv6pmu_handle_irq,
- .enable = armv6pmu_enable_event,
- .disable = armv6mpcore_pmu_disable_event,
- .read_counter = armv6pmu_read_counter,
- .write_counter = armv6pmu_write_counter,
- .get_event_idx = armv6pmu_get_event_idx,
- .start = armv6pmu_start,
- .stop = armv6pmu_stop,
- .map_event = armv6mpcore_map_event,
- .num_events = 3,
- .max_period = (1LLU << 32) - 1,
-};
-
-static struct arm_pmu *__devinit armv6mpcore_pmu_init(void)
+static int __devinit armv6mpcore_pmu_init(struct arm_pmu *cpu_pmu)
{
- return &armv6mpcore_pmu;
+ cpu_pmu->name = "v6mpcore";
+ cpu_pmu->handle_irq = armv6pmu_handle_irq;
+ cpu_pmu->enable = armv6pmu_enable_event;
+ cpu_pmu->disable = armv6mpcore_pmu_disable_event;
+ cpu_pmu->read_counter = armv6pmu_read_counter;
+ cpu_pmu->write_counter = armv6pmu_write_counter;
+ cpu_pmu->get_event_idx = armv6pmu_get_event_idx;
+ cpu_pmu->start = armv6pmu_start;
+ cpu_pmu->stop = armv6pmu_stop;
+ cpu_pmu->map_event = armv6mpcore_map_event;
+ cpu_pmu->num_events = 3;
+ cpu_pmu->max_period = (1LLU << 32) - 1;
+
+ return 0;
}
#else
-static struct arm_pmu *__devinit armv6pmu_init(void)
+static int armv6pmu_init(struct arm_pmu *cpu_pmu)
{
- return NULL;
+ return -ENODEV;
}
-static struct arm_pmu *__devinit armv6mpcore_pmu_init(void)
+static int armv6mpcore_pmu_init(struct arm_pmu *cpu_pmu)
{
- return NULL;
+ return -ENODEV;
}
#endif /* CONFIG_CPU_V6 || CONFIG_CPU_V6K */
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