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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-11 20:47:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-11 20:47:30 -0800
commit6f696eb17be741668810fe1f798135c7cf6733e2 (patch)
treef9bcfe5831dfcaaad50ca68d7f04d80d8236fa56 /include
parentc4e194e3b71ff4fed01d727c32ee1071921d28a3 (diff)
parent125580380f418000b1a06d9a54700f1191b6e561 (diff)
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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
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (57 commits) x86, perf events: Check if we have APIC enabled perf_event: Fix variable initialization in other codepaths perf kmem: Fix unused argument build warning perf symbols: perf_header__read_build_ids() offset'n'size should be u64 perf symbols: dsos__read_build_ids() should read both user and kernel buildids perf tools: Align long options which have no short forms perf kmem: Show usage if no option is specified sched: Mark sched_clock() as notrace perf sched: Add max delay time snapshot perf tools: Correct size given to memset perf_event: Fix perf_swevent_hrtimer() variable initialization perf sched: Fix for getting task's execution time tracing/kprobes: Fix field creation's bad error handling perf_event: Cleanup for cpu_clock_perf_event_update() perf_event: Allocate children's perf_event_ctxp at the right time perf_event: Clean up __perf_event_init_context() hw-breakpoints: Modify breakpoints without unregistering them perf probe: Update perf-probe document perf probe: Support --del option trace-kprobe: Support delete probe syntax ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/hw_breakpoint.h40
-rw-r--r--include/linux/perf_event.h41
-rw-r--r--include/linux/sched.h3
3 files changed, 39 insertions, 45 deletions
diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index a03daed08c5..69f07a9f127 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -20,19 +20,18 @@ enum {
#ifdef CONFIG_HAVE_HW_BREAKPOINT
-/* As it's for in-kernel or ptrace use, we want it to be pinned */
-#define DEFINE_BREAKPOINT_ATTR(name) \
-struct perf_event_attr name = { \
- .type = PERF_TYPE_BREAKPOINT, \
- .size = sizeof(name), \
- .pinned = 1, \
-};
-
static inline void hw_breakpoint_init(struct perf_event_attr *attr)
{
+ memset(attr, 0, sizeof(*attr));
+
attr->type = PERF_TYPE_BREAKPOINT;
attr->size = sizeof(*attr);
+ /*
+ * As it's for in-kernel or ptrace use, we want it to be pinned
+ * and to call its callback every hits.
+ */
attr->pinned = 1;
+ attr->sample_period = 1;
}
static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
@@ -52,27 +51,24 @@ static inline int hw_breakpoint_len(struct perf_event *bp)
extern struct perf_event *
register_user_hw_breakpoint(struct perf_event_attr *attr,
- perf_callback_t triggered,
+ perf_overflow_handler_t triggered,
struct task_struct *tsk);
/* FIXME: only change from the attr, and don't unregister */
-extern struct perf_event *
-modify_user_hw_breakpoint(struct perf_event *bp,
- struct perf_event_attr *attr,
- perf_callback_t triggered,
- struct task_struct *tsk);
+extern int
+modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr);
/*
* Kernel breakpoints are not associated with any particular thread.
*/
extern struct perf_event *
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
- perf_callback_t triggered,
+ perf_overflow_handler_t triggered,
int cpu);
extern struct perf_event **
register_wide_hw_breakpoint(struct perf_event_attr *attr,
- perf_callback_t triggered);
+ perf_overflow_handler_t triggered);
extern int register_perf_hw_breakpoint(struct perf_event *bp);
extern int __register_perf_hw_breakpoint(struct perf_event *bp);
@@ -93,20 +89,18 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
static inline struct perf_event *
register_user_hw_breakpoint(struct perf_event_attr *attr,
- perf_callback_t triggered,
+ perf_overflow_handler_t triggered,
struct task_struct *tsk) { return NULL; }
-static inline struct perf_event *
+static inline int
modify_user_hw_breakpoint(struct perf_event *bp,
- struct perf_event_attr *attr,
- perf_callback_t triggered,
- struct task_struct *tsk) { return NULL; }
+ struct perf_event_attr *attr) { return NULL; }
static inline struct perf_event *
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
- perf_callback_t triggered,
+ perf_overflow_handler_t triggered,
int cpu) { return NULL; }
static inline struct perf_event **
register_wide_hw_breakpoint(struct perf_event_attr *attr,
- perf_callback_t triggered) { return NULL; }
+ perf_overflow_handler_t triggered) { return NULL; }
static inline int
register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
static inline int
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 43adbd7f001..64a53f74c9a 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -18,10 +18,6 @@
#include <linux/ioctl.h>
#include <asm/byteorder.h>
-#ifdef CONFIG_HAVE_HW_BREAKPOINT
-#include <asm/hw_breakpoint.h>
-#endif
-
/*
* User-space ABI bits:
*/
@@ -215,12 +211,12 @@ struct perf_event_attr {
__u32 wakeup_watermark; /* bytes before wakeup */
};
- union {
- struct { /* Hardware breakpoint info */
- __u64 bp_addr;
- __u32 bp_type;
- __u32 bp_len;
- };
+ struct { /* Hardware breakpoint info */
+ __u64 bp_addr;
+ __u32 bp_type;
+ __u32 bp_len;
+ __u64 __bp_reserved_1;
+ __u64 __bp_reserved_2;
};
__u32 __reserved_2;
@@ -451,6 +447,10 @@ enum perf_callchain_context {
# include <asm/perf_event.h>
#endif
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+#include <asm/hw_breakpoint.h>
+#endif
+
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rculist.h>
@@ -565,10 +565,12 @@ struct perf_pending_entry {
void (*func)(struct perf_pending_entry *);
};
-typedef void (*perf_callback_t)(struct perf_event *, void *);
-
struct perf_sample_data;
+typedef void (*perf_overflow_handler_t)(struct perf_event *, int,
+ struct perf_sample_data *,
+ struct pt_regs *regs);
+
/**
* struct perf_event - performance event kernel representation:
*/
@@ -660,18 +662,12 @@ struct perf_event {
struct pid_namespace *ns;
u64 id;
- void (*overflow_handler)(struct perf_event *event,
- int nmi, struct perf_sample_data *data,
- struct pt_regs *regs);
+ perf_overflow_handler_t overflow_handler;
#ifdef CONFIG_EVENT_PROFILE
struct event_filter *filter;
#endif
- perf_callback_t callback;
-
- perf_callback_t event_callback;
-
#endif /* CONFIG_PERF_EVENTS */
};
@@ -781,7 +777,7 @@ extern struct perf_event *
perf_event_create_kernel_counter(struct perf_event_attr *attr,
int cpu,
pid_t pid,
- perf_callback_t callback);
+ perf_overflow_handler_t callback);
extern u64 perf_event_read_value(struct perf_event *event,
u64 *enabled, u64 *running);
@@ -876,6 +872,8 @@ extern void perf_output_copy(struct perf_output_handle *handle,
const void *buf, unsigned int len);
extern int perf_swevent_get_recursion_context(void);
extern void perf_swevent_put_recursion_context(int rctx);
+extern void perf_event_enable(struct perf_event *event);
+extern void perf_event_disable(struct perf_event *event);
#else
static inline void
perf_event_task_sched_in(struct task_struct *task, int cpu) { }
@@ -906,7 +904,8 @@ static inline void perf_event_fork(struct task_struct *tsk) { }
static inline void perf_event_init(void) { }
static inline int perf_swevent_get_recursion_context(void) { return -1; }
static inline void perf_swevent_put_recursion_context(int rctx) { }
-
+static inline void perf_event_enable(struct perf_event *event) { }
+static inline void perf_event_disable(struct perf_event *event) { }
#endif
#define perf_output_put(handle, x) \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 89115ec7d43..3f4fa73b512 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1840,7 +1840,8 @@ static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
extern int sched_clock_stable;
#endif
-extern unsigned long long sched_clock(void);
+/* ftrace calls sched_clock() directly */
+extern unsigned long long notrace sched_clock(void);
extern void sched_clock_init(void);
extern u64 sched_clock_cpu(int cpu);