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Commit 8be3f9a2 authored by Mark Rutland's avatar Mark Rutland Committed by Will Deacon
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ARM: perf: remove cpu-related misnomers 

Currently struct cpu_hw_events stores data on events running on a
PMU associated with a CPU. As this data is general enough to be used
for system PMUs, this name is a misnomer, and may cause confusion when
it is used for system PMUs.

Additionally, 'armpmu' is commonly used as a parameter name for an
instance of struct arm_pmu. The name is also used for a global instance
which represents the CPU's PMU.

As cpu_hw_events is now not tied to CPU PMUs, it is renamed to
pmu_hw_events, with instances of it renamed similarly. As the global
'armpmu' is CPU-specfic, it is renamed to cpu_pmu. This should make it
clearer which code is generic, and which is coupled with the CPU.
Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Reviewed-by: default avatarWill Deacon <will.deacon@arm.com>
Reviewed-by: default avatarJamie Iles <jamie@jamieiles.com>
Reviewed-by: default avatarAshwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 3fc2c830
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Inline Side-by-side
Showing with 78 additions and 78 deletions
arch/arm/kernel/perf_event.c
View file @ 8be3f9a2
......@@ -37,10 +37,10 @@
*/
#define ARMPMU_MAX_HWEVENTS 32
/* The events for a given CPU. */
struct cpu_hw_events {
/* The events for a given PMU register set. */
struct pmu_hw_events {
/*
* The events that are active on the CPU for the given index.
* The events that are active on the PMU for the given index.
*/
struct perf_event **events;
......@@ -59,7 +59,7 @@ struct cpu_hw_events {
static DEFINE_PER_CPU(struct perf_event * [ARMPMU_MAX_HWEVENTS], hw_events);
static DEFINE_PER_CPU(unsigned long [BITS_TO_LONGS(ARMPMU_MAX_HWEVENTS)], used_mask);
static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
static DEFINE_PER_CPU(struct pmu_hw_events, cpu_hw_events);
struct arm_pmu {
struct pmu pmu;
......@@ -70,7 +70,7 @@ struct arm_pmu {
irqreturn_t (*handle_irq)(int irq_num, void *dev);
void (*enable)(struct hw_perf_event *evt, int idx);
void (*disable)(struct hw_perf_event *evt, int idx);
int (*get_event_idx)(struct cpu_hw_events *cpuc,
int (*get_event_idx)(struct pmu_hw_events *hw_events,
struct hw_perf_event *hwc);
int (*set_event_filter)(struct hw_perf_event *evt,
struct perf_event_attr *attr);
......@@ -85,21 +85,21 @@ struct arm_pmu {
struct mutex reserve_mutex;
u64 max_period;
struct platform_device *plat_device;
struct cpu_hw_events *(*get_hw_events)(void);
struct pmu_hw_events *(*get_hw_events)(void);
};
#define to_arm_pmu(p) (container_of(p, struct arm_pmu, pmu))
/* Set at runtime when we know what CPU type we are. */
static struct arm_pmu *armpmu;
static struct arm_pmu *cpu_pmu;
enum arm_perf_pmu_ids
armpmu_get_pmu_id(void)
{
int id = -ENODEV;
if (armpmu != NULL)
id = armpmu->id;
if (cpu_pmu != NULL)
id = cpu_pmu->id;
return id;
}
......@@ -110,8 +110,8 @@ armpmu_get_max_events(void)
{
int max_events = 0;
if (armpmu != NULL)
max_events = armpmu->num_events;
if (cpu_pmu != NULL)
max_events = cpu_pmu->num_events;
return max_events;
}
......@@ -319,15 +319,15 @@ static void
armpmu_del(struct perf_event *event, int flags)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct cpu_hw_events *cpuc = armpmu->get_hw_events();
struct pmu_hw_events *hw_events = armpmu->get_hw_events();
struct hw_perf_event *hwc = &event->hw;
int idx = hwc->idx;
WARN_ON(idx < 0);
armpmu_stop(event, PERF_EF_UPDATE);
cpuc->events[idx] = NULL;
clear_bit(idx, cpuc->used_mask);
hw_events->events[idx] = NULL;
clear_bit(idx, hw_events->used_mask);
perf_event_update_userpage(event);
}
......@@ -336,7 +336,7 @@ static int
armpmu_add(struct perf_event *event, int flags)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct cpu_hw_events *cpuc = armpmu->get_hw_events();
struct pmu_hw_events *hw_events = armpmu->get_hw_events();
struct hw_perf_event *hwc = &event->hw;
int idx;
int err = 0;
......@@ -344,7 +344,7 @@ armpmu_add(struct perf_event *event, int flags)
perf_pmu_disable(event->pmu);
/* If we don't have a space for the counter then finish early. */
idx = armpmu->get_event_idx(cpuc, hwc);
idx = armpmu->get_event_idx(hw_events, hwc);
if (idx < 0) {
err = idx;
goto out;
......@@ -356,7 +356,7 @@ armpmu_add(struct perf_event *event, int flags)
*/
event->hw.idx = idx;
armpmu->disable(hwc, idx);
cpuc->events[idx] = event;
hw_events->events[idx] = event;
hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE;
if (flags & PERF_EF_START)
......@@ -371,7 +371,7 @@ armpmu_add(struct perf_event *event, int flags)
}
static int
validate_event(struct cpu_hw_events *cpuc,
validate_event(struct pmu_hw_events *hw_events,
struct perf_event *event)
{
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
......@@ -381,14 +381,14 @@ validate_event(struct cpu_hw_events *cpuc,
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
return 1;
return armpmu->get_event_idx(cpuc, &fake_event) >= 0;
return armpmu->get_event_idx(hw_events, &fake_event) >= 0;
}
static int
validate_group(struct perf_event *event)
{
struct perf_event *sibling, *leader = event->group_leader;
struct cpu_hw_events fake_pmu;
struct pmu_hw_events fake_pmu;
memset(&fake_pmu, 0, sizeof(fake_pmu));
......@@ -604,13 +604,13 @@ static int armpmu_event_init(struct perf_event *event)
static void armpmu_enable(struct pmu *pmu)
{
struct arm_pmu *armpmu = to_arm_pmu(pmu);
/* Enable all of the perf events on hardware. */
struct arm_pmu *armpmu = to_arm_pmu(pmu);
int idx, enabled = 0;
struct cpu_hw_events *cpuc = armpmu->get_hw_events();
struct pmu_hw_events *hw_events = armpmu->get_hw_events();
for (idx = 0; idx < armpmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct perf_event *event = hw_events->events[idx];
if (!event)
continue;
......@@ -662,13 +662,13 @@ static int __init armpmu_register(struct arm_pmu *armpmu, char *name, int type)
* This requires SMP to be available, so exists as a separate initcall.
*/
static int __init
armpmu_reset(void)
cpu_pmu_reset(void)
{
if (armpmu && armpmu->reset)
return on_each_cpu(armpmu->reset, NULL, 1);
if (cpu_pmu && cpu_pmu->reset)
return on_each_cpu(cpu_pmu->reset, NULL, 1);
return 0;
}
arch_initcall(armpmu_reset);
arch_initcall(cpu_pmu_reset);
/*
* PMU platform driver and devicetree bindings.
......@@ -688,7 +688,7 @@ static struct platform_device_id armpmu_plat_device_ids[] = {
static int __devinit armpmu_device_probe(struct platform_device *pdev)
{
armpmu->plat_device = pdev;
cpu_pmu->plat_device = pdev;
return 0;
}
......@@ -707,7 +707,7 @@ static int __init register_pmu_driver(void)
}
device_initcall(register_pmu_driver);
static struct cpu_hw_events *armpmu_get_cpu_events(void)
static struct pmu_hw_events *armpmu_get_cpu_events(void)
{
return &__get_cpu_var(cpu_hw_events);
}
......@@ -716,7 +716,7 @@ static void __init cpu_pmu_init(struct arm_pmu *armpmu)
{
int cpu;
for_each_possible_cpu(cpu) {
struct cpu_hw_events *events = &per_cpu(cpu_hw_events, cpu);
struct pmu_hw_events *events = &per_cpu(cpu_hw_events, cpu);
events->events = per_cpu(hw_events, cpu);
events->used_mask = per_cpu(used_mask, cpu);
raw_spin_lock_init(&events->pmu_lock);
......@@ -741,22 +741,22 @@ init_hw_perf_events(void)
case 0xB360: /* ARM1136 */
case 0xB560: /* ARM1156 */
case 0xB760: /* ARM1176 */
armpmu = armv6pmu_init();
cpu_pmu = armv6pmu_init();
break;
case 0xB020: /* ARM11mpcore */
armpmu = armv6mpcore_pmu_init();
cpu_pmu = armv6mpcore_pmu_init();
break;
case 0xC080: /* Cortex-A8 */
armpmu = armv7_a8_pmu_init();
cpu_pmu = armv7_a8_pmu_init();
break;
case 0xC090: /* Cortex-A9 */
armpmu = armv7_a9_pmu_init();
cpu_pmu = armv7_a9_pmu_init();
break;
case 0xC050: /* Cortex-A5 */
armpmu = armv7_a5_pmu_init();
cpu_pmu = armv7_a5_pmu_init();
break;
case 0xC0F0: /* Cortex-A15 */
armpmu = armv7_a15_pmu_init();
cpu_pmu = armv7_a15_pmu_init();
break;
}
/* Intel CPUs [xscale]. */
......@@ -764,19 +764,19 @@ init_hw_perf_events(void)
part_number = (cpuid >> 13) & 0x7;
switch (part_number) {
case 1:
armpmu = xscale1pmu_init();
cpu_pmu = xscale1pmu_init();
break;
case 2:
armpmu = xscale2pmu_init();
cpu_pmu = xscale2pmu_init();
break;
}
}
if (armpmu) {
if (cpu_pmu) {
pr_info("enabled with %s PMU driver, %d counters available\n",
armpmu->name, armpmu->num_events);
cpu_pmu_init(armpmu);
armpmu_register(armpmu, "cpu", PERF_TYPE_RAW);
cpu_pmu->name, cpu_pmu->num_events);
cpu_pmu_init(cpu_pmu);
armpmu_register(cpu_pmu, "cpu", PERF_TYPE_RAW);
} else {
pr_info("no hardware support available\n");
}
......
arch/arm/kernel/perf_event_v6.c
View file @ 8be3f9a2
......@@ -433,7 +433,7 @@ armv6pmu_enable_event(struct hw_perf_event *hwc,
int idx)
{
unsigned long val, mask, evt, flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
if (ARMV6_CYCLE_COUNTER == idx) {
mask = 0;
......@@ -486,7 +486,7 @@ armv6pmu_handle_irq(int irq_num,
{
unsigned long pmcr = armv6_pmcr_read();
struct perf_sample_data data;
struct cpu_hw_events *cpuc;
struct pmu_hw_events *cpuc;
struct pt_regs *regs;
int idx;
......@@ -505,7 +505,7 @@ armv6pmu_handle_irq(int irq_num,
perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < armpmu->num_events; ++idx) {
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
......@@ -526,7 +526,7 @@ armv6pmu_handle_irq(int irq_num,
continue;
if (perf_event_overflow(event, &data, regs))
armpmu->disable(hwc, idx);
cpu_pmu->disable(hwc, idx);
}
/*
......@@ -545,7 +545,7 @@ static void
armv6pmu_start(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = armv6_pmcr_read();
......@@ -558,7 +558,7 @@ static void
armv6pmu_stop(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = armv6_pmcr_read();
......@@ -568,7 +568,7 @@ armv6pmu_stop(void)
}
static int
armv6pmu_get_event_idx(struct cpu_hw_events *cpuc,
armv6pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
{
/* Always place a cycle counter into the cycle counter. */
......@@ -598,7 +598,7 @@ armv6pmu_disable_event(struct hw_perf_event *hwc,
int idx)
{
unsigned long val, mask, evt, flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;
......@@ -632,7 +632,7 @@ armv6mpcore_pmu_disable_event(struct hw_perf_event *hwc,
int idx)
{
unsigned long val, mask, flags, evt = 0;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
if (ARMV6_CYCLE_COUNTER == idx) {
mask = ARMV6_PMCR_CCOUNT_IEN;
......
arch/arm/kernel/perf_event_v7.c
View file @ 8be3f9a2
......@@ -683,7 +683,7 @@ static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
*/
#define ARMV7_IDX_CYCLE_COUNTER 0
#define ARMV7_IDX_COUNTER0 1
#define ARMV7_IDX_COUNTER_LAST (ARMV7_IDX_CYCLE_COUNTER + armpmu->num_events - 1)
#define ARMV7_IDX_COUNTER_LAST (ARMV7_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
#define ARMV7_MAX_COUNTERS 32
#define ARMV7_COUNTER_MASK (ARMV7_MAX_COUNTERS - 1)
......@@ -936,7 +936,7 @@ static void armv7_pmnc_dump_regs(void)
static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
/*
* Enable counter and interrupt, and set the counter to count
......@@ -973,7 +973,7 @@ static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
static void armv7pmu_disable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
/*
* Disable counter and interrupt
......@@ -997,7 +997,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
{
u32 pmnc;
struct perf_sample_data data;
struct cpu_hw_events *cpuc;
struct pmu_hw_events *cpuc;
struct pt_regs *regs;
int idx;
......@@ -1020,7 +1020,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < armpmu->num_events; ++idx) {
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
......@@ -1038,7 +1038,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
continue;
if (perf_event_overflow(event, &data, regs))
armpmu->disable(hwc, idx);
cpu_pmu->disable(hwc, idx);
}
/*
......@@ -1056,7 +1056,7 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
static void armv7pmu_start(void)
{
unsigned long flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
/* Enable all counters */
......@@ -1067,7 +1067,7 @@ static void armv7pmu_start(void)
static void armv7pmu_stop(void)
{
unsigned long flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
/* Disable all counters */
......@@ -1075,7 +1075,7 @@ static void armv7pmu_stop(void)
raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
}
static int armv7pmu_get_event_idx(struct cpu_hw_events *cpuc,
static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
{
int idx;
......@@ -1093,7 +1093,7 @@ static int armv7pmu_get_event_idx(struct cpu_hw_events *cpuc,
* For anything other than a cycle counter, try and use
* the events counters
*/
for (idx = ARMV7_IDX_COUNTER0; idx < armpmu->num_events; ++idx) {
for (idx = ARMV7_IDX_COUNTER0; idx < cpu_pmu->num_events; ++idx) {
if (!test_and_set_bit(idx, cpuc->used_mask))
return idx;
}
......@@ -1130,7 +1130,7 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event,
static void armv7pmu_reset(void *info)
{
u32 idx, nb_cnt = armpmu->num_events;
u32 idx, nb_cnt = cpu_pmu->num_events;
/* The counter and interrupt enable registers are unknown at reset. */
for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx)
......
arch/arm/kernel/perf_event_xscale.c
View file @ 8be3f9a2
......@@ -222,7 +222,7 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
{
unsigned long pmnc;
struct perf_sample_data data;
struct cpu_hw_events *cpuc;
struct pmu_hw_events *cpuc;
struct pt_regs *regs;
int idx;
......@@ -249,7 +249,7 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < armpmu->num_events; ++idx) {
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
......@@ -263,7 +263,7 @@ xscale1pmu_handle_irq(int irq_num, void *dev)
continue;
if (perf_event_overflow(event, &data, regs))
armpmu->disable(hwc, idx);
cpu_pmu->disable(hwc, idx);
}
irq_work_run();
......@@ -281,7 +281,7 @@ static void
xscale1pmu_enable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long val, mask, evt, flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
switch (idx) {
case XSCALE_CYCLE_COUNTER:
......@@ -315,7 +315,7 @@ static void
xscale1pmu_disable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long val, mask, evt, flags;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
switch (idx) {
case XSCALE_CYCLE_COUNTER:
......@@ -344,7 +344,7 @@ xscale1pmu_disable_event(struct hw_perf_event *hwc, int idx)
}
static int
xscale1pmu_get_event_idx(struct cpu_hw_events *cpuc,
xscale1pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
{
if (XSCALE_PERFCTR_CCNT == event->config_base) {
......@@ -367,7 +367,7 @@ static void
xscale1pmu_start(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = xscale1pmu_read_pmnc();
......@@ -380,7 +380,7 @@ static void
xscale1pmu_stop(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = xscale1pmu_read_pmnc();
......@@ -565,7 +565,7 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
{
unsigned long pmnc, of_flags;
struct perf_sample_data data;
struct cpu_hw_events *cpuc;
struct pmu_hw_events *cpuc;
struct pt_regs *regs;
int idx;
......@@ -586,7 +586,7 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
perf_sample_data_init(&data, 0);
cpuc = &__get_cpu_var(cpu_hw_events);
for (idx = 0; idx < armpmu->num_events; ++idx) {
for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
struct perf_event *event = cpuc->events[idx];
struct hw_perf_event *hwc;
......@@ -600,7 +600,7 @@ xscale2pmu_handle_irq(int irq_num, void *dev)
continue;
if (perf_event_overflow(event, &data, regs))
armpmu->disable(hwc, idx);
cpu_pmu->disable(hwc, idx);
}
irq_work_run();
......@@ -618,7 +618,7 @@ static void
xscale2pmu_enable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long flags, ien, evtsel;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ien = xscale2pmu_read_int_enable();
evtsel = xscale2pmu_read_event_select();
......@@ -662,7 +662,7 @@ static void
xscale2pmu_disable_event(struct hw_perf_event *hwc, int idx)
{
unsigned long flags, ien, evtsel;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
ien = xscale2pmu_read_int_enable();
evtsel = xscale2pmu_read_event_select();
......@@ -703,7 +703,7 @@ xscale2pmu_disable_event(struct hw_perf_event *hwc, int idx)
}
static int
xscale2pmu_get_event_idx(struct cpu_hw_events *cpuc,
xscale2pmu_get_event_idx(struct pmu_hw_events *cpuc,
struct hw_perf_event *event)
{
int idx = xscale1pmu_get_event_idx(cpuc, event);
......@@ -722,7 +722,7 @@ static void
xscale2pmu_start(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = xscale2pmu_read_pmnc() & ~XSCALE_PMU_CNT64;
......@@ -735,7 +735,7 @@ static void
xscale2pmu_stop(void)
{
unsigned long flags, val;
struct cpu_hw_events *events = armpmu->get_hw_events();
struct pmu_hw_events *events = cpu_pmu->get_hw_events();
raw_spin_lock_irqsave(&events->pmu_lock, flags);
val = xscale2pmu_read_pmnc();
......
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