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

Browse Source 
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (470 commits)
  x86: Fix comments of register/stack access functions
  perf tools: Replace %m with %a in sscanf
  hw-breakpoints: Keep track of user disabled breakpoints
  tracing/syscalls: Make syscall events print callbacks static
  tracing: Add DEFINE_EVENT(), DEFINE_SINGLE_EVENT() support to docbook
  perf: Don't free perf_mmap_data until work has been done
  perf_event: Fix compile error
  perf tools: Fix _GNU_SOURCE macro related strndup() build error
  trace_syscalls: Remove unused syscall_name_to_nr()
  trace_syscalls: Simplify syscall profile
  trace_syscalls: Remove duplicate init_enter_##sname()
  trace_syscalls: Add syscall_nr field to struct syscall_metadata
  trace_syscalls: Remove enter_id exit_id
  trace_syscalls: Set event_enter_##sname->data to its metadata
  trace_syscalls: Remove unused event_syscall_enter and event_syscall_exit
  perf_event: Initialize data.period in perf_swevent_hrtimer()
  perf probe: Simplify event naming
  perf probe: Add --list option for listing current probe events
  perf probe: Add argv_split() from lib/argv_split.c
  perf probe: Move probe event utility functions to probe-event.c
  ...
This commit is contained in:
Linus Torvalds
2009-12-05 15:30:21 -08:00
parent 96fa2b508d d103d01e4b
commit c3fa27d136
251 changed files with 21200 additions and 6210 deletions
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38
include/linux/ftrace_event.h
View File

@@ -117,12 +117,12 @@ struct ftrace_event_call {
struct dentry *dir;
struct trace_event *event;
int enabled;
int (*regfunc)(void *);
void (*unregfunc)(void *);
int (*regfunc)(struct ftrace_event_call *);
void (*unregfunc)(struct ftrace_event_call *);
int id;
int (*raw_init)(void);
int (*show_format)(struct ftrace_event_call *call,
struct trace_seq *s);
int (*raw_init)(struct ftrace_event_call *);
int (*show_format)(struct ftrace_event_call *,
struct trace_seq *);
int (*define_fields)(struct ftrace_event_call *);
struct list_head fields;
int filter_active;
@@ -131,20 +131,20 @@ struct ftrace_event_call {
void *data;
atomic_t profile_count;
int (*profile_enable)(void);
void (*profile_disable)(void);
int (*profile_enable)(struct ftrace_event_call *);
void (*profile_disable)(struct ftrace_event_call *);
};
#define FTRACE_MAX_PROFILE_SIZE 2048
extern char *trace_profile_buf;
extern char *trace_profile_buf_nmi;
extern char *perf_trace_buf;
extern char *perf_trace_buf_nmi;
#define MAX_FILTER_PRED 32
#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */
extern void destroy_preds(struct ftrace_event_call *call);
extern int filter_match_preds(struct ftrace_event_call *call, void *rec);
extern int filter_match_preds(struct event_filter *filter, void *rec);
extern int filter_current_check_discard(struct ring_buffer *buffer,
struct ftrace_event_call *call,
void *rec,
@@ -157,11 +157,12 @@ enum {
FILTER_PTR_STRING,
};
extern int trace_define_field(struct ftrace_event_call *call,
const char *type, const char *name,
int offset, int size, int is_signed,
int filter_type);
extern int trace_define_common_fields(struct ftrace_event_call *call);
extern int trace_define_field(struct ftrace_event_call *call, const char *type,
const char *name, int offset, int size,
int is_signed, int filter_type);
extern int trace_add_event_call(struct ftrace_event_call *call);
extern void trace_remove_event_call(struct ftrace_event_call *call);
#define is_signed_type(type) (((type)(-1)) < 0)
@@ -186,4 +187,13 @@ do { \
__trace_printk(ip, fmt, ##args); \
} while (0)
#ifdef CONFIG_EVENT_PROFILE
struct perf_event;
extern int ftrace_profile_enable(int event_id);
extern void ftrace_profile_disable(int event_id);
extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
char *filter_str);
extern void ftrace_profile_free_filter(struct perf_event *event);
#endif
#endif /* _LINUX_FTRACE_EVENT_H */

131
include/linux/hw_breakpoint.h Normal file
View File

@@ -0,0 +1,131 @@
#ifndef _LINUX_HW_BREAKPOINT_H
#define _LINUX_HW_BREAKPOINT_H
enum {
HW_BREAKPOINT_LEN_1 = 1,
HW_BREAKPOINT_LEN_2 = 2,
HW_BREAKPOINT_LEN_4 = 4,
HW_BREAKPOINT_LEN_8 = 8,
};
enum {
HW_BREAKPOINT_R = 1,
HW_BREAKPOINT_W = 2,
HW_BREAKPOINT_X = 4,
};
#ifdef __KERNEL__
#include <linux/perf_event.h>
#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)
{
attr->type = PERF_TYPE_BREAKPOINT;
attr->size = sizeof(*attr);
attr->pinned = 1;
}
static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
{
return bp->attr.bp_addr;
}
static inline int hw_breakpoint_type(struct perf_event *bp)
{
return bp->attr.bp_type;
}
static inline int hw_breakpoint_len(struct perf_event *bp)
{
return bp->attr.bp_len;
}
extern struct perf_event *
register_user_hw_breakpoint(struct perf_event_attr *attr,
perf_callback_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);
/*
* 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,
int cpu);
extern struct perf_event **
register_wide_hw_breakpoint(struct perf_event_attr *attr,
perf_callback_t triggered);
extern int register_perf_hw_breakpoint(struct perf_event *bp);
extern int __register_perf_hw_breakpoint(struct perf_event *bp);
extern void unregister_hw_breakpoint(struct perf_event *bp);
extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events);
extern int reserve_bp_slot(struct perf_event *bp);
extern void release_bp_slot(struct perf_event *bp);
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
{
return &bp->hw.info;
}
#else /* !CONFIG_HAVE_HW_BREAKPOINT */
static inline struct perf_event *
register_user_hw_breakpoint(struct perf_event_attr *attr,
perf_callback_t triggered,
struct task_struct *tsk) { return NULL; }
static inline struct perf_event *
modify_user_hw_breakpoint(struct perf_event *bp,
struct perf_event_attr *attr,
perf_callback_t triggered,
struct task_struct *tsk) { return NULL; }
static inline struct perf_event *
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
perf_callback_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; }
static inline int
register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
static inline int
__register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
static inline void unregister_hw_breakpoint(struct perf_event *bp) { }
static inline void
unregister_wide_hw_breakpoint(struct perf_event **cpu_events) { }
static inline int
reserve_bp_slot(struct perf_event *bp) {return -ENOSYS; }
static inline void release_bp_slot(struct perf_event *bp) { }
static inline void flush_ptrace_hw_breakpoint(struct task_struct *tsk) { }
static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
{
return NULL;
}
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
#endif /* __KERNEL__ */
#endif /* _LINUX_HW_BREAKPOINT_H */

2
include/linux/kprobes.h
View File

@@ -296,6 +296,8 @@ void recycle_rp_inst(struct kretprobe_instance *ri, struct hlist_head *head);
int disable_kprobe(struct kprobe *kp);
int enable_kprobe(struct kprobe *kp);
void dump_kprobe(struct kprobe *kp);
#else /* !CONFIG_KPROBES: */
static inline int kprobes_built_in(void)

3
include/linux/perf_counter.h
View File

@@ -106,6 +106,8 @@ enum perf_sw_ids {
PERF_COUNT_SW_CPU_MIGRATIONS = 4,
PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
PERF_COUNT_SW_EMULATION_FAULTS = 8,
PERF_COUNT_SW_MAX, /* non-ABI */
};
@@ -225,6 +227,7 @@ struct perf_counter_attr {
#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5)
#define PERF_COUNTER_IOC_SET_FILTER _IOW('$', 6, char *)
enum perf_counter_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,

59
include/linux/perf_event.h
View File

@@ -18,6 +18,10 @@
#include <linux/ioctl.h>
#include <asm/byteorder.h>
#ifdef CONFIG_HAVE_HW_BREAKPOINT
#include <asm/hw_breakpoint.h>
#endif
/*
* User-space ABI bits:
*/
@@ -31,6 +35,7 @@ enum perf_type_id {
PERF_TYPE_TRACEPOINT = 2,
PERF_TYPE_HW_CACHE = 3,
PERF_TYPE_RAW = 4,
PERF_TYPE_BREAKPOINT = 5,
PERF_TYPE_MAX, /* non-ABI */
};
@@ -102,6 +107,8 @@ enum perf_sw_ids {
PERF_COUNT_SW_CPU_MIGRATIONS = 4,
PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
PERF_COUNT_SW_EMULATION_FAULTS = 8,
PERF_COUNT_SW_MAX, /* non-ABI */
};
@@ -207,6 +214,15 @@ struct perf_event_attr {
__u32 wakeup_events; /* wakeup every n events */
__u32 wakeup_watermark; /* bytes before wakeup */
};
union {
struct { /* Hardware breakpoint info */
__u64 bp_addr;
__u32 bp_type;
__u32 bp_len;
};
};
__u32 __reserved_2;
__u64 __reserved_3;
@@ -219,8 +235,9 @@ struct perf_event_attr {
#define PERF_EVENT_IOC_DISABLE _IO ('$', 1)
#define PERF_EVENT_IOC_REFRESH _IO ('$', 2)
#define PERF_EVENT_IOC_RESET _IO ('$', 3)
#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, u64)
#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64)
#define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5)
#define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *)
enum perf_event_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
@@ -475,6 +492,11 @@ struct hw_perf_event {
s64 remaining;
struct hrtimer hrtimer;
};
#ifdef CONFIG_HAVE_HW_BREAKPOINT
union { /* breakpoint */
struct arch_hw_breakpoint info;
};
#endif
};
atomic64_t prev_count;
u64 sample_period;
@@ -543,6 +565,10 @@ struct perf_pending_entry {
void (*func)(struct perf_pending_entry *);
};
typedef void (*perf_callback_t)(struct perf_event *, void *);
struct perf_sample_data;
/**
* struct perf_event - performance event kernel representation:
*/
@@ -585,7 +611,7 @@ struct perf_event {
u64 tstamp_running;
u64 tstamp_stopped;
struct perf_event_attr attr;
struct perf_event_attr attr;
struct hw_perf_event hw;
struct perf_event_context *ctx;
@@ -633,7 +659,20 @@ 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);
#ifdef CONFIG_EVENT_PROFILE
struct event_filter *filter;
#endif
perf_callback_t callback;
perf_callback_t event_callback;
#endif /* CONFIG_PERF_EVENTS */
};
/**
@@ -706,7 +745,6 @@ struct perf_output_handle {
int nmi;
int sample;
int locked;
unsigned long flags;
};
#ifdef CONFIG_PERF_EVENTS
@@ -738,6 +776,14 @@ extern int hw_perf_group_sched_in(struct perf_event *group_leader,
struct perf_cpu_context *cpuctx,
struct perf_event_context *ctx, int cpu);
extern void perf_event_update_userpage(struct perf_event *event);
extern int perf_event_release_kernel(struct perf_event *event);
extern struct perf_event *
perf_event_create_kernel_counter(struct perf_event_attr *attr,
int cpu,
pid_t pid,
perf_callback_t callback);
extern u64 perf_event_read_value(struct perf_event *event,
u64 *enabled, u64 *running);
struct perf_sample_data {
u64 type;
@@ -814,6 +860,7 @@ extern int sysctl_perf_event_sample_rate;
extern void perf_event_init(void);
extern void perf_tp_event(int event_id, u64 addr, u64 count,
void *record, int entry_size);
extern void perf_bp_event(struct perf_event *event, void *data);
#ifndef perf_misc_flags
#define perf_misc_flags(regs) (user_mode(regs) ? PERF_RECORD_MISC_USER : \
@@ -827,6 +874,8 @@ extern int perf_output_begin(struct perf_output_handle *handle,
extern void perf_output_end(struct perf_output_handle *handle);
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);
#else
static inline void
perf_event_task_sched_in(struct task_struct *task, int cpu) { }
@@ -848,11 +897,15 @@ static inline int perf_event_task_enable(void) { return -EINVAL; }
static inline void
perf_sw_event(u32 event_id, u64 nr, int nmi,
struct pt_regs *regs, u64 addr) { }
static inline void
perf_bp_event(struct perf_event *event, void *data) { }
static inline void perf_event_mmap(struct vm_area_struct *vma) { }
static inline void perf_event_comm(struct task_struct *tsk) { }
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) { }
#endif

77
include/linux/syscalls.h
View File

@@ -99,37 +99,16 @@ struct perf_event_attr;
#define __SC_TEST6(t6, a6, ...) __SC_TEST(t6); __SC_TEST5(__VA_ARGS__)
#ifdef CONFIG_EVENT_PROFILE
#define TRACE_SYS_ENTER_PROFILE(sname) \
static int prof_sysenter_enable_##sname(void) \
{ \
return reg_prof_syscall_enter("sys"#sname); \
} \
\
static void prof_sysenter_disable_##sname(void) \
{ \
unreg_prof_syscall_enter("sys"#sname); \
}
#define TRACE_SYS_EXIT_PROFILE(sname) \
static int prof_sysexit_enable_##sname(void) \
{ \
return reg_prof_syscall_exit("sys"#sname); \
} \
\
static void prof_sysexit_disable_##sname(void) \
{ \
unreg_prof_syscall_exit("sys"#sname); \
}
#define TRACE_SYS_ENTER_PROFILE_INIT(sname) \
.profile_count = ATOMIC_INIT(-1), \
.profile_enable = prof_sysenter_enable_##sname, \
.profile_disable = prof_sysenter_disable_##sname,
.profile_enable = prof_sysenter_enable, \
.profile_disable = prof_sysenter_disable,
#define TRACE_SYS_EXIT_PROFILE_INIT(sname) \
.profile_count = ATOMIC_INIT(-1), \
.profile_enable = prof_sysexit_enable_##sname, \
.profile_disable = prof_sysexit_disable_##sname,
.profile_enable = prof_sysexit_enable, \
.profile_disable = prof_sysexit_disable,
#else
#define TRACE_SYS_ENTER_PROFILE(sname)
#define TRACE_SYS_ENTER_PROFILE_INIT(sname)
@@ -153,74 +132,46 @@ static void prof_sysexit_disable_##sname(void) \
#define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__)
#define SYSCALL_TRACE_ENTER_EVENT(sname) \
static const struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call event_enter_##sname; \
struct trace_event enter_syscall_print_##sname = { \
static struct trace_event enter_syscall_print_##sname = { \
.trace = print_syscall_enter, \
}; \
static int init_enter_##sname(void) \
{ \
int num, id; \
num = syscall_name_to_nr("sys"#sname); \
if (num < 0) \
return -ENOSYS; \
id = register_ftrace_event(&enter_syscall_print_##sname);\
if (!id) \
return -ENODEV; \
event_enter_##sname.id = id; \
set_syscall_enter_id(num, id); \
INIT_LIST_HEAD(&event_enter_##sname.fields); \
return 0; \
} \
TRACE_SYS_ENTER_PROFILE(sname); \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_enter_##sname = { \
.name = "sys_enter"#sname, \
.system = "syscalls", \
.event = &event_syscall_enter, \
.raw_init = init_enter_##sname, \
.event = &enter_syscall_print_##sname, \
.raw_init = init_syscall_trace, \
.show_format = syscall_enter_format, \
.define_fields = syscall_enter_define_fields, \
.regfunc = reg_event_syscall_enter, \
.unregfunc = unreg_event_syscall_enter, \
.data = "sys"#sname, \
.data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_ENTER_PROFILE_INIT(sname) \
}
#define SYSCALL_TRACE_EXIT_EVENT(sname) \
static const struct syscall_metadata __syscall_meta_##sname; \
static struct ftrace_event_call event_exit_##sname; \
struct trace_event exit_syscall_print_##sname = { \
static struct trace_event exit_syscall_print_##sname = { \
.trace = print_syscall_exit, \
}; \
static int init_exit_##sname(void) \
{ \
int num, id; \
num = syscall_name_to_nr("sys"#sname); \
if (num < 0) \
return -ENOSYS; \
id = register_ftrace_event(&exit_syscall_print_##sname);\
if (!id) \
return -ENODEV; \
event_exit_##sname.id = id; \
set_syscall_exit_id(num, id); \
INIT_LIST_HEAD(&event_exit_##sname.fields); \
return 0; \
} \
TRACE_SYS_EXIT_PROFILE(sname); \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) \
event_exit_##sname = { \
.name = "sys_exit"#sname, \
.system = "syscalls", \
.event = &event_syscall_exit, \
.raw_init = init_exit_##sname, \
.event = &exit_syscall_print_##sname, \
.raw_init = init_syscall_trace, \
.show_format = syscall_exit_format, \
.define_fields = syscall_exit_define_fields, \
.regfunc = reg_event_syscall_exit, \
.unregfunc = unreg_event_syscall_exit, \
.data = "sys"#sname, \
.data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_EXIT_PROFILE_INIT(sname) \
}

6
include/linux/tracepoint.h
View File

@@ -280,6 +280,12 @@ static inline void tracepoint_synchronize_unregister(void)
* TRACE_EVENT_FN to perform any (un)registration work.
*/
#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print)
#define DEFINE_EVENT(template, name, proto, args) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#define TRACE_EVENT(name, proto, args, struct, assign, print) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#define TRACE_EVENT_FN(name, proto, args, struct, \