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Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Provide generic perf_sample_data initialization
  MAINTAINERS: Add Arnaldo as tools/perf/ co-maintainer
  perf trace: Don't use pager if scripting
  perf trace/scripting: Remove extraneous header read
  perf, ARM: Modify kuser rmb() call to compile for Thumb-2
  x86/stacktrace: Don't dereference bad frame pointers
  perf archive: Don't try to collect files without a build-id
  perf_events, x86: Fixup fixed counter constraints
  perf, x86: Restrict the ANY flag
  perf, x86: rename macro in ARCH_PERFMON_EVENTSEL_ENABLE
  perf, x86: add some IBS macros to perf_event.h
  perf, x86: make IBS macros available in perf_event.h
  hw-breakpoints: Remove stub unthrottle callback
  x86/hw-breakpoints: Remove the name field
  perf: Remove pointless breakpoint union
  perf lock: Drop the buffers multiplexing dependency
  perf lock: Fix and add misc documentally things
  percpu: Add __percpu sparse annotations to hw_breakpoint
This commit is contained in:
Linus Torvalds
2010-03-13 14:39:42 -08:00
parent 8cea4eb642 dc1d628a67
commit 9fdfbc2bff
27 changed files with 327 additions and 129 deletions
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11
kernel/hw_breakpoint.c
View File

@@ -413,17 +413,17 @@ EXPORT_SYMBOL_GPL(unregister_hw_breakpoint);
*
* @return a set of per_cpu pointers to perf events
*/
struct perf_event **
struct perf_event * __percpu *
register_wide_hw_breakpoint(struct perf_event_attr *attr,
perf_overflow_handler_t triggered)
{
struct perf_event **cpu_events, **pevent, *bp;
struct perf_event * __percpu *cpu_events, **pevent, *bp;
long err;
int cpu;
cpu_events = alloc_percpu(typeof(*cpu_events));
if (!cpu_events)
return ERR_PTR(-ENOMEM);
return (void __percpu __force *)ERR_PTR(-ENOMEM);
get_online_cpus();
for_each_online_cpu(cpu) {
@@ -451,7 +451,7 @@ fail:
put_online_cpus();
free_percpu(cpu_events);
return ERR_PTR(err);
return (void __percpu __force *)ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(register_wide_hw_breakpoint);
@@ -459,7 +459,7 @@ EXPORT_SYMBOL_GPL(register_wide_hw_breakpoint);
* unregister_wide_hw_breakpoint - unregister a wide breakpoint in the kernel
* @cpu_events: the per cpu set of events to unregister
*/
void unregister_wide_hw_breakpoint(struct perf_event **cpu_events)
void unregister_wide_hw_breakpoint(struct perf_event * __percpu *cpu_events)
{
int cpu;
struct perf_event **pevent;
@@ -489,5 +489,4 @@ struct pmu perf_ops_bp = {
.enable = arch_install_hw_breakpoint,
.disable = arch_uninstall_hw_breakpoint,
.read = hw_breakpoint_pmu_read,
.unthrottle = hw_breakpoint_pmu_unthrottle
};

36
kernel/perf_event.c
View File

@@ -56,21 +56,6 @@ static atomic_t nr_task_events __read_mostly;
*/
int sysctl_perf_event_paranoid __read_mostly = 1;
static inline bool perf_paranoid_tracepoint_raw(void)
{
return sysctl_perf_event_paranoid > -1;
}
static inline bool perf_paranoid_cpu(void)
{
return sysctl_perf_event_paranoid > 0;
}
static inline bool perf_paranoid_kernel(void)
{
return sysctl_perf_event_paranoid > 1;
}
int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
/*
@@ -4123,8 +4108,7 @@ void __perf_sw_event(u32 event_id, u64 nr, int nmi,
if (rctx < 0)
return;
data.addr = addr;
data.raw = NULL;
perf_sample_data_init(&data, addr);
do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi, &data, regs);
@@ -4169,11 +4153,10 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
struct perf_event *event;
u64 period;
event = container_of(hrtimer, struct perf_event, hw.hrtimer);
event = container_of(hrtimer, struct perf_event, hw.hrtimer);
event->pmu->read(event);
data.addr = 0;
data.raw = NULL;
perf_sample_data_init(&data, 0);
data.period = event->hw.last_period;
regs = get_irq_regs();
/*
@@ -4337,17 +4320,15 @@ static const struct pmu perf_ops_task_clock = {
void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
int entry_size)
{
struct pt_regs *regs = get_irq_regs();
struct perf_sample_data data;
struct perf_raw_record raw = {
.size = entry_size,
.data = record,
};
struct perf_sample_data data = {
.addr = addr,
.raw = &raw,
};
struct pt_regs *regs = get_irq_regs();
perf_sample_data_init(&data, addr);
data.raw = &raw;
if (!regs)
regs = task_pt_regs(current);
@@ -4463,8 +4444,7 @@ void perf_bp_event(struct perf_event *bp, void *data)
struct perf_sample_data sample;
struct pt_regs *regs = data;
sample.raw = NULL;
sample.addr = bp->attr.bp_addr;
perf_sample_data_init(&sample, bp->attr.bp_addr);
if (!perf_exclude_event(bp, regs))
perf_swevent_add(bp, 1, 1, &sample, regs);