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perf: Drop the obsolete profile naming for trace events

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Drop the obsolete "profile" naming used by perf for trace events.
Perf can now do more than simple events counting, so generalize
the API naming.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
This commit is contained in:
Frederic Weisbecker 2010-03-05 05:35:37 +01:00
parent c530665c31
commit 97d5a22005
10 changed files with 119 additions and 119 deletions
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16
include/linux/ftrace_event.h
View File

@ -131,12 +131,12 @@ struct ftrace_event_call {
void *mod;
void *data;
int profile_count;
int (*profile_enable)(struct ftrace_event_call *);
void (*profile_disable)(struct ftrace_event_call *);
int perf_refcount;
int (*perf_event_enable)(struct ftrace_event_call *);
void (*perf_event_disable)(struct ftrace_event_call *);
};
#define FTRACE_MAX_PROFILE_SIZE 2048
#define PERF_MAX_TRACE_SIZE 2048
#define MAX_FILTER_PRED 32
#define MAX_FILTER_STR_VAL 256 /* Should handle KSYM_SYMBOL_LEN */
@ -190,17 +190,17 @@ struct perf_event;
DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
extern int ftrace_profile_enable(int event_id);
extern void ftrace_profile_disable(int event_id);
extern int perf_trace_enable(int event_id);
extern void perf_trace_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);
extern void *
ftrace_perf_buf_prepare(int size, unsigned short type, int *rctxp,
perf_trace_buf_prepare(int size, unsigned short type, int *rctxp,
unsigned long *irq_flags);
static inline void
ftrace_perf_buf_submit(void *raw_data, int size, int rctx, u64 addr,
perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
u64 count, unsigned long irq_flags, struct pt_regs *regs)
{
struct trace_entry *entry = raw_data;

24
include/linux/syscalls.h
View File

@ -101,18 +101,18 @@ struct perf_event_attr;
#ifdef CONFIG_PERF_EVENTS
#define TRACE_SYS_ENTER_PROFILE_INIT(sname) \
.profile_enable = prof_sysenter_enable, \
.profile_disable = prof_sysenter_disable,
#define TRACE_SYS_ENTER_PERF_INIT(sname) \
.perf_event_enable = perf_sysenter_enable, \
.perf_event_disable = perf_sysenter_disable,
#define TRACE_SYS_EXIT_PROFILE_INIT(sname) \
.profile_enable = prof_sysexit_enable, \
.profile_disable = prof_sysexit_disable,
#define TRACE_SYS_EXIT_PERF_INIT(sname) \
.perf_event_enable = perf_sysexit_enable, \
.perf_event_disable = perf_sysexit_disable,
#else
#define TRACE_SYS_ENTER_PROFILE(sname)
#define TRACE_SYS_ENTER_PROFILE_INIT(sname)
#define TRACE_SYS_EXIT_PROFILE(sname)
#define TRACE_SYS_EXIT_PROFILE_INIT(sname)
#define TRACE_SYS_ENTER_PERF(sname)
#define TRACE_SYS_ENTER_PERF_INIT(sname)
#define TRACE_SYS_EXIT_PERF(sname)
#define TRACE_SYS_EXIT_PERF_INIT(sname)
#endif /* CONFIG_PERF_EVENTS */
#ifdef CONFIG_FTRACE_SYSCALLS
@ -149,7 +149,7 @@ struct perf_event_attr;
.regfunc = reg_event_syscall_enter, \
.unregfunc = unreg_event_syscall_enter, \
.data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_ENTER_PROFILE_INIT(sname) \
TRACE_SYS_ENTER_PERF_INIT(sname) \
}
#define SYSCALL_TRACE_EXIT_EVENT(sname) \
@ -171,7 +171,7 @@ struct perf_event_attr;
.regfunc = reg_event_syscall_exit, \
.unregfunc = unreg_event_syscall_exit, \
.data = (void *)&__syscall_meta_##sname,\
TRACE_SYS_EXIT_PROFILE_INIT(sname) \
TRACE_SYS_EXIT_PERF_INIT(sname) \
}
#define SYSCALL_METADATA(sname, nb) \

38
include/trace/ftrace.h
View File

@ -401,18 +401,18 @@ static inline notrace int ftrace_get_offsets_##call( \
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, name, proto, args) \
\
static void ftrace_profile_##name(proto); \
static void perf_trace_##name(proto); \
\
static notrace int \
ftrace_profile_enable_##name(struct ftrace_event_call *unused) \
perf_trace_enable_##name(struct ftrace_event_call *unused) \
{ \
return register_trace_##name(ftrace_profile_##name); \
return register_trace_##name(perf_trace_##name); \
} \
\
static notrace void \
ftrace_profile_disable_##name(struct ftrace_event_call *unused) \
perf_trace_disable_##name(struct ftrace_event_call *unused) \
{ \
unregister_trace_##name(ftrace_profile_##name); \
unregister_trace_##name(perf_trace_##name); \
}
#undef DEFINE_EVENT_PRINT
@ -507,12 +507,12 @@ ftrace_profile_disable_##name(struct ftrace_event_call *unused) \
#ifdef CONFIG_PERF_EVENTS
#define _TRACE_PROFILE_INIT(call) \
.profile_enable = ftrace_profile_enable_##call, \
.profile_disable = ftrace_profile_disable_##call,
#define _TRACE_PERF_INIT(call) \
.perf_event_enable = perf_trace_enable_##call, \
.perf_event_disable = perf_trace_disable_##call,
#else
#define _TRACE_PROFILE_INIT(call)
#define _TRACE_PERF_INIT(call)
#endif /* CONFIG_PERF_EVENTS */
#undef __entry
@ -638,7 +638,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.unregfunc = ftrace_raw_unreg_event_##call, \
.print_fmt = print_fmt_##template, \
.define_fields = ftrace_define_fields_##template, \
_TRACE_PROFILE_INIT(call) \
_TRACE_PERF_INIT(call) \
}
#undef DEFINE_EVENT_PRINT
@ -657,18 +657,18 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.unregfunc = ftrace_raw_unreg_event_##call, \
.print_fmt = print_fmt_##call, \
.define_fields = ftrace_define_fields_##template, \
_TRACE_PROFILE_INIT(call) \
_TRACE_PERF_INIT(call) \
}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
/*
* Define the insertion callback to profile events
* Define the insertion callback to perf events
*
* The job is very similar to ftrace_raw_event_<call> except that we don't
* insert in the ring buffer but in a perf counter.
*
* static void ftrace_profile_<call>(proto)
* static void ftrace_perf_<call>(proto)
* {
* struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
* struct ftrace_event_call *event_call = &event_<call>;
@ -757,7 +757,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
static notrace void \
ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
perf_trace_templ_##call(struct ftrace_event_call *event_call, \
proto) \
{ \
struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
@ -774,10 +774,10 @@ ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
sizeof(u64)); \
__entry_size -= sizeof(u32); \
\
if (WARN_ONCE(__entry_size > FTRACE_MAX_PROFILE_SIZE, \
if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \
"profile buffer not large enough")) \
return; \
entry = (struct ftrace_raw_##call *)ftrace_perf_buf_prepare( \
entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \
__entry_size, event_call->id, &rctx, &irq_flags); \
if (!entry) \
return; \
@ -788,17 +788,17 @@ ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
__regs = &__get_cpu_var(perf_trace_regs); \
perf_fetch_caller_regs(__regs, 2); \
\
ftrace_perf_buf_submit(entry, __entry_size, rctx, __addr, \
perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
__count, irq_flags, __regs); \
}
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
static notrace void ftrace_profile_##call(proto) \
static notrace void perf_trace_##call(proto) \
{ \
struct ftrace_event_call *event_call = &event_##call; \
\
ftrace_profile_templ_##template(event_call, args); \
perf_trace_templ_##template(event_call, args); \
}
#undef DEFINE_EVENT_PRINT

8
include/trace/syscall.h
View File

@ -47,10 +47,10 @@ enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
#endif
#ifdef CONFIG_PERF_EVENTS
int prof_sysenter_enable(struct ftrace_event_call *call);
void prof_sysenter_disable(struct ftrace_event_call *call);
int prof_sysexit_enable(struct ftrace_event_call *call);
void prof_sysexit_disable(struct ftrace_event_call *call);
int perf_sysenter_enable(struct ftrace_event_call *call);
void perf_sysenter_disable(struct ftrace_event_call *call);
int perf_sysexit_enable(struct ftrace_event_call *call);
void perf_sysexit_disable(struct ftrace_event_call *call);
#endif
#endif /* _TRACE_SYSCALL_H */

4
kernel/perf_event.c
View File

@ -4347,7 +4347,7 @@ static int perf_tp_event_match(struct perf_event *event,
static void tp_perf_event_destroy(struct perf_event *event)
{
ftrace_profile_disable(event->attr.config);
perf_trace_disable(event->attr.config);
}
static const struct pmu *tp_perf_event_init(struct perf_event *event)
@ -4361,7 +4361,7 @@ static const struct pmu *tp_perf_event_init(struct perf_event *event)
!capable(CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
if (ftrace_profile_enable(event->attr.config))
if (perf_trace_enable(event->attr.config))
return NULL;
event->destroy = tp_perf_event_destroy;

2
kernel/trace/Makefile
View File

@ -52,7 +52,7 @@ obj-$(CONFIG_EVENT_TRACING) += trace_events.o
obj-$(CONFIG_EVENT_TRACING) += trace_export.o
obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
ifeq ($(CONFIG_PERF_EVENTS),y)
obj-$(CONFIG_EVENT_TRACING) += trace_event_profile.o
obj-$(CONFIG_EVENT_TRACING) += trace_event_perf.o
endif
obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
obj-$(CONFIG_KPROBE_EVENT) += trace_kprobe.o

44
kernel/trace/trace_event_profile.c → kernel/trace/trace_event_perf.c
View File

@ -1,5 +1,5 @@
/*
* trace event based perf counter profiling
* trace event based perf event profiling/tracing
*
* Copyright (C) 2009 Red Hat Inc, Peter Zijlstra <pzijlstr@redhat.com>
* Copyright (C) 2009-2010 Frederic Weisbecker <fweisbec@gmail.com>
@ -14,20 +14,20 @@ DEFINE_PER_CPU(struct pt_regs, perf_trace_regs);
static char *perf_trace_buf;
static char *perf_trace_buf_nmi;
typedef typeof(char [FTRACE_MAX_PROFILE_SIZE]) perf_trace_t ;
typedef typeof(char [PERF_MAX_TRACE_SIZE]) perf_trace_t ;
/* Count the events in use (per event id, not per instance) */
static int total_profile_count;
static int total_ref_count;
static int ftrace_profile_enable_event(struct ftrace_event_call *event)
static int perf_trace_event_enable(struct ftrace_event_call *event)
{
char *buf;
int ret = -ENOMEM;
if (event->profile_count++ > 0)
if (event->perf_refcount++ > 0)
return 0;
if (!total_profile_count) {
if (!total_ref_count) {
buf = (char *)alloc_percpu(perf_trace_t);
if (!buf)
goto fail_buf;
@ -41,35 +41,35 @@ static int ftrace_profile_enable_event(struct ftrace_event_call *event)
rcu_assign_pointer(perf_trace_buf_nmi, buf);
}
ret = event->profile_enable(event);
ret = event->perf_event_enable(event);
if (!ret) {
total_profile_count++;
total_ref_count++;
return 0;
}
fail_buf_nmi:
if (!total_profile_count) {
if (!total_ref_count) {
free_percpu(perf_trace_buf_nmi);
free_percpu(perf_trace_buf);
perf_trace_buf_nmi = NULL;
perf_trace_buf = NULL;
}
fail_buf:
event->profile_count--;
event->perf_refcount--;
return ret;
}
int ftrace_profile_enable(int event_id)
int perf_trace_enable(int event_id)
{
struct ftrace_event_call *event;
int ret = -EINVAL;
mutex_lock(&event_mutex);
list_for_each_entry(event, &ftrace_events, list) {
if (event->id == event_id && event->profile_enable &&
if (event->id == event_id && event->perf_event_enable &&
try_module_get(event->mod)) {
ret = ftrace_profile_enable_event(event);
ret = perf_trace_event_enable(event);
break;
}
}
@ -78,16 +78,16 @@ int ftrace_profile_enable(int event_id)
return ret;
}
static void ftrace_profile_disable_event(struct ftrace_event_call *event)
static void perf_trace_event_disable(struct ftrace_event_call *event)
{
char *buf, *nmi_buf;
if (--event->profile_count > 0)
if (--event->perf_refcount > 0)
return;
event->profile_disable(event);
event->perf_event_disable(event);
if (!--total_profile_count) {
if (!--total_ref_count) {
buf = perf_trace_buf;
rcu_assign_pointer(perf_trace_buf, NULL);
@ -105,14 +105,14 @@ static void ftrace_profile_disable_event(struct ftrace_event_call *event)
}
}
void ftrace_profile_disable(int event_id)
void perf_trace_disable(int event_id)
{
struct ftrace_event_call *event;
mutex_lock(&event_mutex);
list_for_each_entry(event, &ftrace_events, list) {
if (event->id == event_id) {
ftrace_profile_disable_event(event);
perf_trace_event_disable(event);
module_put(event->mod);
break;
}
@ -120,8 +120,8 @@ void ftrace_profile_disable(int event_id)
mutex_unlock(&event_mutex);
}
__kprobes void *ftrace_perf_buf_prepare(int size, unsigned short type,
int *rctxp, unsigned long *irq_flags)
__kprobes void *perf_trace_buf_prepare(int size, unsigned short type,
int *rctxp, unsigned long *irq_flags)
{
struct trace_entry *entry;
char *trace_buf, *raw_data;
@ -162,4 +162,4 @@ __kprobes void *ftrace_perf_buf_prepare(int size, unsigned short type,
local_irq_restore(*irq_flags);
return NULL;
}
EXPORT_SYMBOL_GPL(ftrace_perf_buf_prepare);
EXPORT_SYMBOL_GPL(perf_trace_buf_prepare);

2
kernel/trace/trace_events.c
View File

@ -938,7 +938,7 @@ event_create_dir(struct ftrace_event_call *call, struct dentry *d_events,
trace_create_file("enable", 0644, call->dir, call,
enable);
if (call->id && call->profile_enable)
if (call->id && call->perf_event_enable)
trace_create_file("id", 0444, call->dir, call,
id);

28
kernel/trace/trace_kprobe.c
View File

@ -1214,7 +1214,7 @@ static int set_print_fmt(struct trace_probe *tp)
#ifdef CONFIG_PERF_EVENTS
/* Kprobe profile handler */
static __kprobes void kprobe_profile_func(struct kprobe *kp,
static __kprobes void kprobe_perf_func(struct kprobe *kp,
struct pt_regs *regs)
{
struct trace_probe *tp = container_of(kp, struct trace_probe, rp.kp);
@ -1227,11 +1227,11 @@ static __kprobes void kprobe_profile_func(struct kprobe *kp,
__size = SIZEOF_KPROBE_TRACE_ENTRY(tp->nr_args);
size = ALIGN(__size + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
"profile buffer not large enough"))
return;
entry = ftrace_perf_buf_prepare(size, call->id, &rctx, &irq_flags);
entry = perf_trace_buf_prepare(size, call->id, &rctx, &irq_flags);
if (!entry)
return;
@ -1240,11 +1240,11 @@ static __kprobes void kprobe_profile_func(struct kprobe *kp,
for (i = 0; i < tp->nr_args; i++)
entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
ftrace_perf_buf_submit(entry, size, rctx, entry->ip, 1, irq_flags, regs);
perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, irq_flags, regs);
}
/* Kretprobe profile handler */
static __kprobes void kretprobe_profile_func(struct kretprobe_instance *ri,
static __kprobes void kretprobe_perf_func(struct kretprobe_instance *ri,
struct pt_regs *regs)
{
struct trace_probe *tp = container_of(ri->rp, struct trace_probe, rp);
@ -1257,11 +1257,11 @@ static __kprobes void kretprobe_profile_func(struct kretprobe_instance *ri,
__size = SIZEOF_KRETPROBE_TRACE_ENTRY(tp->nr_args);
size = ALIGN(__size + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
"profile buffer not large enough"))
return;
entry = ftrace_perf_buf_prepare(size, call->id, &rctx, &irq_flags);
entry = perf_trace_buf_prepare(size, call->id, &rctx, &irq_flags);
if (!entry)
return;
@ -1271,11 +1271,11 @@ static __kprobes void kretprobe_profile_func(struct kretprobe_instance *ri,
for (i = 0; i < tp->nr_args; i++)
entry->args[i] = call_fetch(&tp->args[i].fetch, regs);
ftrace_perf_buf_submit(entry, size, rctx, entry->ret_ip, 1,
perf_trace_buf_submit(entry, size, rctx, entry->ret_ip, 1,
irq_flags, regs);
}
static int probe_profile_enable(struct ftrace_event_call *call)
static int probe_perf_enable(struct ftrace_event_call *call)
{
struct trace_probe *tp = (struct trace_probe *)call->data;
@ -1287,7 +1287,7 @@ static int probe_profile_enable(struct ftrace_event_call *call)
return enable_kprobe(&tp->rp.kp);
}
static void probe_profile_disable(struct ftrace_event_call *call)
static void probe_perf_disable(struct ftrace_event_call *call)
{
struct trace_probe *tp = (struct trace_probe *)call->data;
@ -1312,7 +1312,7 @@ int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs)
kprobe_trace_func(kp, regs);
#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kprobe_profile_func(kp, regs);
kprobe_perf_func(kp, regs);
#endif
return 0; /* We don't tweek kernel, so just return 0 */
}
@ -1326,7 +1326,7 @@ int kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs)
kretprobe_trace_func(ri, regs);
#ifdef CONFIG_PERF_EVENTS
if (tp->flags & TP_FLAG_PROFILE)
kretprobe_profile_func(ri, regs);
kretprobe_perf_func(ri, regs);
#endif
return 0; /* We don't tweek kernel, so just return 0 */
}
@ -1359,8 +1359,8 @@ static int register_probe_event(struct trace_probe *tp)
call->unregfunc = probe_event_disable;
#ifdef CONFIG_PERF_EVENTS
call->profile_enable = probe_profile_enable;
call->profile_disable = probe_profile_disable;
call->perf_event_enable = probe_perf_enable;
call->perf_event_disable = probe_perf_disable;
#endif
call->data = tp;
ret = trace_add_event_call(call);

72
kernel/trace/trace_syscalls.c
View File

@ -428,12 +428,12 @@ core_initcall(init_ftrace_syscalls);
#ifdef CONFIG_PERF_EVENTS
static DECLARE_BITMAP(enabled_prof_enter_syscalls, NR_syscalls);
static DECLARE_BITMAP(enabled_prof_exit_syscalls, NR_syscalls);
static int sys_prof_refcount_enter;
static int sys_prof_refcount_exit;
static DECLARE_BITMAP(enabled_perf_enter_syscalls, NR_syscalls);
static DECLARE_BITMAP(enabled_perf_exit_syscalls, NR_syscalls);
static int sys_perf_refcount_enter;
static int sys_perf_refcount_exit;
static void prof_syscall_enter(struct pt_regs *regs, long id)
static void perf_syscall_enter(struct pt_regs *regs, long id)
{
struct syscall_metadata *sys_data;
struct syscall_trace_enter *rec;
@ -443,7 +443,7 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
int size;
syscall_nr = syscall_get_nr(current, regs);
if (!test_bit(syscall_nr, enabled_prof_enter_syscalls))
if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
@ -455,11 +455,11 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
size = ALIGN(size + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
"profile buffer not large enough"))
if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
"perf buffer not large enough"))
return;
rec = (struct syscall_trace_enter *)ftrace_perf_buf_prepare(size,
rec = (struct syscall_trace_enter *)perf_trace_buf_prepare(size,
sys_data->enter_event->id, &rctx, &flags);
if (!rec)
return;
@ -467,10 +467,10 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
rec->nr = syscall_nr;
syscall_get_arguments(current, regs, 0, sys_data->nb_args,
(unsigned long *)&rec->args);
ftrace_perf_buf_submit(rec, size, rctx, 0, 1, flags, regs);
perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
}
int prof_sysenter_enable(struct ftrace_event_call *call)
int perf_sysenter_enable(struct ftrace_event_call *call)
{
int ret = 0;
int num;
@ -478,34 +478,34 @@ int prof_sysenter_enable(struct ftrace_event_call *call)
num = ((struct syscall_metadata *)call->data)->syscall_nr;
mutex_lock(&syscall_trace_lock);
if (!sys_prof_refcount_enter)
ret = register_trace_sys_enter(prof_syscall_enter);
if (!sys_perf_refcount_enter)
ret = register_trace_sys_enter(perf_syscall_enter);
if (ret) {
pr_info("event trace: Could not activate"
"syscall entry trace point");
} else {
set_bit(num, enabled_prof_enter_syscalls);
sys_prof_refcount_enter++;
set_bit(num, enabled_perf_enter_syscalls);
sys_perf_refcount_enter++;
}
mutex_unlock(&syscall_trace_lock);
return ret;
}
void prof_sysenter_disable(struct ftrace_event_call *call)
void perf_sysenter_disable(struct ftrace_event_call *call)
{
int num;
num = ((struct syscall_metadata *)call->data)->syscall_nr;
mutex_lock(&syscall_trace_lock);
sys_prof_refcount_enter--;
clear_bit(num, enabled_prof_enter_syscalls);
if (!sys_prof_refcount_enter)
unregister_trace_sys_enter(prof_syscall_enter);
sys_perf_refcount_enter--;
clear_bit(num, enabled_perf_enter_syscalls);
if (!sys_perf_refcount_enter)
unregister_trace_sys_enter(perf_syscall_enter);
mutex_unlock(&syscall_trace_lock);
}
static void prof_syscall_exit(struct pt_regs *regs, long ret)
static void perf_syscall_exit(struct pt_regs *regs, long ret)
{
struct syscall_metadata *sys_data;
struct syscall_trace_exit *rec;
@ -515,7 +515,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
int size;
syscall_nr = syscall_get_nr(current, regs);
if (!test_bit(syscall_nr, enabled_prof_exit_syscalls))
if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
@ -530,11 +530,11 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
* Impossible, but be paranoid with the future
* How to put this check outside runtime?
*/
if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE,
"exit event has grown above profile buffer size"))
if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
"exit event has grown above perf buffer size"))
return;
rec = (struct syscall_trace_exit *)ftrace_perf_buf_prepare(size,
rec = (struct syscall_trace_exit *)perf_trace_buf_prepare(size,
sys_data->exit_event->id, &rctx, &flags);
if (!rec)
return;
@ -542,10 +542,10 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
rec->nr = syscall_nr;
rec->ret = syscall_get_return_value(current, regs);
ftrace_perf_buf_submit(rec, size, rctx, 0, 1, flags, regs);
perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
}
int prof_sysexit_enable(struct ftrace_event_call *call)
int perf_sysexit_enable(struct ftrace_event_call *call)
{
int ret = 0;
int num;
@ -553,30 +553,30 @@ int prof_sysexit_enable(struct ftrace_event_call *call)
num = ((struct syscall_metadata *)call->data)->syscall_nr;
mutex_lock(&syscall_trace_lock);
if (!sys_prof_refcount_exit)
ret = register_trace_sys_exit(prof_syscall_exit);
if (!sys_perf_refcount_exit)
ret = register_trace_sys_exit(perf_syscall_exit);
if (ret) {
pr_info("event trace: Could not activate"
"syscall exit trace point");
} else {
set_bit(num, enabled_prof_exit_syscalls);
sys_prof_refcount_exit++;
set_bit(num, enabled_perf_exit_syscalls);
sys_perf_refcount_exit++;
}
mutex_unlock(&syscall_trace_lock);
return ret;
}
void prof_sysexit_disable(struct ftrace_event_call *call)
void perf_sysexit_disable(struct ftrace_event_call *call)
{
int num;
num = ((struct syscall_metadata *)call->data)->syscall_nr;
mutex_lock(&syscall_trace_lock);
sys_prof_refcount_exit--;
clear_bit(num, enabled_prof_exit_syscalls);
if (!sys_prof_refcount_exit)
unregister_trace_sys_exit(prof_syscall_exit);
sys_perf_refcount_exit--;
clear_bit(num, enabled_perf_exit_syscalls);
if (!sys_perf_refcount_exit)
unregister_trace_sys_exit(perf_syscall_exit);
mutex_unlock(&syscall_trace_lock);
}