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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-11 13:24:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-11 13:24:03 -0700
commit483e3cd6a34ad2d7e41100bc1b98614ac42a4567 (patch)
treeef544ccdd1e95991c32fd8b656714583b7398371 /include
parent774a694f8cd08115d130a290d73c6d8563f26b1b (diff)
parentd28daf923ac5e4a0d7cecebae56f3e339189366b (diff)
Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (105 commits) ring-buffer: only enable ring_buffer_swap_cpu when needed ring-buffer: check for swapped buffers in start of committing tracing: report error in trace if we fail to swap latency buffer tracing: add trace_array_printk for internal tracers to use tracing: pass around ring buffer instead of tracer tracing: make tracing_reset safe for external use tracing: use timestamp to determine start of latency traces tracing: Remove mentioning of legacy latency_trace file from documentation tracing/filters: Defer pred allocation, fix memory leak tracing: remove users of tracing_reset tracing: disable buffers and synchronize_sched before resetting tracing: disable update max tracer while reading trace tracing: print out start and stop in latency traces ring-buffer: disable all cpu buffers when one finds a problem ring-buffer: do not count discarded events ring-buffer: remove ring_buffer_event_discard ring-buffer: fix ring_buffer_read crossing pages ring-buffer: remove unnecessary cpu_relax ring-buffer: do not swap buffers during a commit ring-buffer: do not reset while in a commit ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/ftrace_event.h51
-rw-r--r--include/linux/module.h14
-rw-r--r--include/linux/perf_counter.h2
-rw-r--r--include/linux/ring_buffer.h24
-rw-r--r--include/linux/syscalls.h131
-rw-r--r--include/linux/tracepoint.h29
-rw-r--r--include/trace/define_trace.h7
-rw-r--r--include/trace/events/module.h126
-rw-r--r--include/trace/events/sched.h12
-rw-r--r--include/trace/events/syscalls.h70
-rw-r--r--include/trace/ftrace.h93
-rw-r--r--include/trace/syscall.h48
12 files changed, 518 insertions, 89 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index a81170de7f6..23f7179bf74 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -93,16 +93,22 @@ void tracing_generic_entry_update(struct trace_entry *entry,
unsigned long flags,
int pc);
struct ring_buffer_event *
-trace_current_buffer_lock_reserve(int type, unsigned long len,
+trace_current_buffer_lock_reserve(struct ring_buffer **current_buffer,
+ int type, unsigned long len,
unsigned long flags, int pc);
-void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
+void trace_current_buffer_unlock_commit(struct ring_buffer *buffer,
+ struct ring_buffer_event *event,
unsigned long flags, int pc);
-void trace_nowake_buffer_unlock_commit(struct ring_buffer_event *event,
+void trace_nowake_buffer_unlock_commit(struct ring_buffer *buffer,
+ struct ring_buffer_event *event,
unsigned long flags, int pc);
-void trace_current_buffer_discard_commit(struct ring_buffer_event *event);
+void trace_current_buffer_discard_commit(struct ring_buffer *buffer,
+ struct ring_buffer_event *event);
void tracing_record_cmdline(struct task_struct *tsk);
+struct event_filter;
+
struct ftrace_event_call {
struct list_head list;
char *name;
@@ -110,16 +116,18 @@ struct ftrace_event_call {
struct dentry *dir;
struct trace_event *event;
int enabled;
- int (*regfunc)(void);
- void (*unregfunc)(void);
+ int (*regfunc)(void *);
+ void (*unregfunc)(void *);
int id;
int (*raw_init)(void);
- int (*show_format)(struct trace_seq *s);
- int (*define_fields)(void);
+ int (*show_format)(struct ftrace_event_call *call,
+ struct trace_seq *s);
+ int (*define_fields)(struct ftrace_event_call *);
struct list_head fields;
int filter_active;
- void *filter;
+ struct event_filter *filter;
void *mod;
+ void *data;
atomic_t profile_count;
int (*profile_enable)(struct ftrace_event_call *);
@@ -129,15 +137,25 @@ struct ftrace_event_call {
#define MAX_FILTER_PRED 32
#define MAX_FILTER_STR_VAL 128
-extern int init_preds(struct ftrace_event_call *call);
extern void destroy_preds(struct ftrace_event_call *call);
extern int filter_match_preds(struct ftrace_event_call *call, void *rec);
-extern int filter_current_check_discard(struct ftrace_event_call *call,
+extern int filter_current_check_discard(struct ring_buffer *buffer,
+ struct ftrace_event_call *call,
void *rec,
struct ring_buffer_event *event);
-extern int trace_define_field(struct ftrace_event_call *call, char *type,
- char *name, int offset, int size, int is_signed);
+enum {
+ FILTER_OTHER = 0,
+ FILTER_STATIC_STRING,
+ FILTER_DYN_STRING,
+ 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);
#define is_signed_type(type) (((type)(-1)) < 0)
@@ -162,11 +180,4 @@ do { \
__trace_printk(ip, fmt, ##args); \
} while (0)
-#define __common_field(type, item, is_signed) \
- ret = trace_define_field(event_call, #type, "common_" #item, \
- offsetof(typeof(field.ent), item), \
- sizeof(field.ent.item), is_signed); \
- if (ret) \
- return ret;
-
#endif /* _LINUX_FTRACE_EVENT_H */
diff --git a/include/linux/module.h b/include/linux/module.h
index 098bdb7bfac..f8f92d015ef 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -17,10 +17,12 @@
#include <linux/moduleparam.h>
#include <linux/marker.h>
#include <linux/tracepoint.h>
-#include <asm/local.h>
+#include <asm/local.h>
#include <asm/module.h>
+#include <trace/events/module.h>
+
/* Not Yet Implemented */
#define MODULE_SUPPORTED_DEVICE(name)
@@ -462,7 +464,10 @@ static inline local_t *__module_ref_addr(struct module *mod, int cpu)
static inline void __module_get(struct module *module)
{
if (module) {
- local_inc(__module_ref_addr(module, get_cpu()));
+ unsigned int cpu = get_cpu();
+ local_inc(__module_ref_addr(module, cpu));
+ trace_module_get(module, _THIS_IP_,
+ local_read(__module_ref_addr(module, cpu)));
put_cpu();
}
}
@@ -473,8 +478,11 @@ static inline int try_module_get(struct module *module)
if (module) {
unsigned int cpu = get_cpu();
- if (likely(module_is_live(module)))
+ if (likely(module_is_live(module))) {
local_inc(__module_ref_addr(module, cpu));
+ trace_module_get(module, _THIS_IP_,
+ local_read(__module_ref_addr(module, cpu)));
+ }
else
ret = 0;
put_cpu();
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index e022b847c90..972f90d7a32 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -766,6 +766,8 @@ extern int sysctl_perf_counter_mlock;
extern int sysctl_perf_counter_sample_rate;
extern void perf_counter_init(void);
+extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
+ void *record, int entry_size);
#ifndef perf_misc_flags
#define perf_misc_flags(regs) (user_mode(regs) ? PERF_EVENT_MISC_USER : \
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 29f8599e6be..5fcc31ed577 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -75,20 +75,6 @@ ring_buffer_event_time_delta(struct ring_buffer_event *event)
}
/*
- * ring_buffer_event_discard can discard any event in the ring buffer.
- * it is up to the caller to protect against a reader from
- * consuming it or a writer from wrapping and replacing it.
- *
- * No external protection is needed if this is called before
- * the event is commited. But in that case it would be better to
- * use ring_buffer_discard_commit.
- *
- * Note, if an event that has not been committed is discarded
- * with ring_buffer_event_discard, it must still be committed.
- */
-void ring_buffer_event_discard(struct ring_buffer_event *event);
-
-/*
* ring_buffer_discard_commit will remove an event that has not
* ben committed yet. If this is used, then ring_buffer_unlock_commit
* must not be called on the discarded event. This function
@@ -154,8 +140,17 @@ unsigned long ring_buffer_size(struct ring_buffer *buffer);
void ring_buffer_reset_cpu(struct ring_buffer *buffer, int cpu);
void ring_buffer_reset(struct ring_buffer *buffer);
+#ifdef CONFIG_RING_BUFFER_ALLOW_SWAP
int ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
struct ring_buffer *buffer_b, int cpu);
+#else
+static inline int
+ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
+ struct ring_buffer *buffer_b, int cpu)
+{
+ return -ENODEV;
+}
+#endif
int ring_buffer_empty(struct ring_buffer *buffer);
int ring_buffer_empty_cpu(struct ring_buffer *buffer, int cpu);
@@ -170,7 +165,6 @@ unsigned long ring_buffer_overruns(struct ring_buffer *buffer);
unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);
unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu);
unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu);
-unsigned long ring_buffer_nmi_dropped_cpu(struct ring_buffer *buffer, int cpu);
u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu);
void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer,
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 80de7003d8c..a8e37821cc6 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -64,6 +64,7 @@ struct perf_counter_attr;
#include <linux/sem.h>
#include <asm/siginfo.h>
#include <asm/signal.h>
+#include <linux/unistd.h>
#include <linux/quota.h>
#include <linux/key.h>
#include <trace/syscall.h>
@@ -97,6 +98,53 @@ struct perf_counter_attr;
#define __SC_TEST5(t5, a5, ...) __SC_TEST(t5); __SC_TEST4(__VA_ARGS__)
#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(struct ftrace_event_call *event_call) \
+{ \
+ int ret = 0; \
+ if (!atomic_inc_return(&event_enter_##sname.profile_count)) \
+ ret = reg_prof_syscall_enter("sys"#sname); \
+ return ret; \
+} \
+ \
+static void prof_sysenter_disable_##sname(struct ftrace_event_call *event_call)\
+{ \
+ if (atomic_add_negative(-1, &event_enter_##sname.profile_count)) \
+ unreg_prof_syscall_enter("sys"#sname); \
+}
+
+#define TRACE_SYS_EXIT_PROFILE(sname) \
+static int prof_sysexit_enable_##sname(struct ftrace_event_call *event_call) \
+{ \
+ int ret = 0; \
+ if (!atomic_inc_return(&event_exit_##sname.profile_count)) \
+ ret = reg_prof_syscall_exit("sys"#sname); \
+ return ret; \
+} \
+ \
+static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \
+{ \
+ if (atomic_add_negative(-1, &event_exit_##sname.profile_count)) \
+ 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,
+
+#define TRACE_SYS_EXIT_PROFILE_INIT(sname) \
+ .profile_count = ATOMIC_INIT(-1), \
+ .profile_enable = prof_sysexit_enable_##sname, \
+ .profile_disable = prof_sysexit_disable_##sname,
+#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)
+#endif
+
#ifdef CONFIG_FTRACE_SYSCALLS
#define __SC_STR_ADECL1(t, a) #a
#define __SC_STR_ADECL2(t, a, ...) #a, __SC_STR_ADECL1(__VA_ARGS__)
@@ -112,7 +160,81 @@ struct perf_counter_attr;
#define __SC_STR_TDECL5(t, a, ...) #t, __SC_STR_TDECL4(__VA_ARGS__)
#define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__)
+#define SYSCALL_TRACE_ENTER_EVENT(sname) \
+ static struct ftrace_event_call event_enter_##sname; \
+ 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, \
+ .show_format = syscall_enter_format, \
+ .define_fields = syscall_enter_define_fields, \
+ .regfunc = reg_event_syscall_enter, \
+ .unregfunc = unreg_event_syscall_enter, \
+ .data = "sys"#sname, \
+ TRACE_SYS_ENTER_PROFILE_INIT(sname) \
+ }
+
+#define SYSCALL_TRACE_EXIT_EVENT(sname) \
+ static struct ftrace_event_call event_exit_##sname; \
+ 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, \
+ .show_format = syscall_exit_format, \
+ .define_fields = syscall_exit_define_fields, \
+ .regfunc = reg_event_syscall_exit, \
+ .unregfunc = unreg_event_syscall_exit, \
+ .data = "sys"#sname, \
+ TRACE_SYS_EXIT_PROFILE_INIT(sname) \
+ }
+
#define SYSCALL_METADATA(sname, nb) \
+ SYSCALL_TRACE_ENTER_EVENT(sname); \
+ SYSCALL_TRACE_EXIT_EVENT(sname); \
static const struct syscall_metadata __used \
__attribute__((__aligned__(4))) \
__attribute__((section("__syscalls_metadata"))) \
@@ -121,18 +243,23 @@ struct perf_counter_attr;
.nb_args = nb, \
.types = types_##sname, \
.args = args_##sname, \
- }
+ .enter_event = &event_enter_##sname, \
+ .exit_event = &event_exit_##sname, \
+ };
#define SYSCALL_DEFINE0(sname) \
+ SYSCALL_TRACE_ENTER_EVENT(_##sname); \
+ SYSCALL_TRACE_EXIT_EVENT(_##sname); \
static const struct syscall_metadata __used \
__attribute__((__aligned__(4))) \
__attribute__((section("__syscalls_metadata"))) \
__syscall_meta_##sname = { \
.name = "sys_"#sname, \
.nb_args = 0, \
+ .enter_event = &event_enter__##sname, \
+ .exit_event = &event_exit__##sname, \
}; \
asmlinkage long sys_##sname(void)
-
#else
#define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void)
#endif
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index b9dc4ca0246..63a3f7a8058 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -23,6 +23,8 @@ struct tracepoint;
struct tracepoint {
const char *name; /* Tracepoint name */
int state; /* State. */
+ void (*regfunc)(void);
+ void (*unregfunc)(void);
void **funcs;
} __attribute__((aligned(32))); /*
* Aligned on 32 bytes because it is
@@ -78,12 +80,16 @@ struct tracepoint {
return tracepoint_probe_unregister(#name, (void *)probe);\
}
-#define DEFINE_TRACE(name) \
+
+#define DEFINE_TRACE_FN(name, reg, unreg) \
static const char __tpstrtab_##name[] \
__attribute__((section("__tracepoints_strings"))) = #name; \
struct tracepoint __tracepoint_##name \
__attribute__((section("__tracepoints"), aligned(32))) = \
- { __tpstrtab_##name, 0, NULL }
+ { __tpstrtab_##name, 0, reg, unreg, NULL }
+
+#define DEFINE_TRACE(name) \
+ DEFINE_TRACE_FN(name, NULL, NULL);
#define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \
EXPORT_SYMBOL_GPL(__tracepoint_##name)
@@ -108,6 +114,7 @@ extern void tracepoint_update_probe_range(struct tracepoint *begin,
return -ENOSYS; \
}
+#define DEFINE_TRACE_FN(name, reg, unreg)
#define DEFINE_TRACE(name)
#define EXPORT_TRACEPOINT_SYMBOL_GPL(name)
#define EXPORT_TRACEPOINT_SYMBOL(name)
@@ -158,6 +165,15 @@ static inline void tracepoint_synchronize_unregister(void)
#define PARAMS(args...) args
+#endif /* _LINUX_TRACEPOINT_H */
+
+/*
+ * Note: we keep the TRACE_EVENT outside the include file ifdef protection.
+ * This is due to the way trace events work. If a file includes two
+ * trace event headers under one "CREATE_TRACE_POINTS" the first include
+ * will override the TRACE_EVENT and break the second include.
+ */
+
#ifndef TRACE_EVENT
/*
* For use with the TRACE_EVENT macro:
@@ -259,10 +275,15 @@ static inline void tracepoint_synchronize_unregister(void)
* can also by used by generic instrumentation like SystemTap), and
* it is also used to expose a structured trace record in
* /sys/kernel/debug/tracing/events/.
+ *
+ * A set of (un)registration functions can be passed to the variant
+ * TRACE_EVENT_FN to perform any (un)registration work.
*/
#define TRACE_EVENT(name, proto, args, struct, assign, print) \
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
-#endif
+#define TRACE_EVENT_FN(name, proto, args, struct, \
+ assign, print, reg, unreg) \
+ DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
-#endif
+#endif /* ifdef TRACE_EVENT (see note above) */
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index f7a7ae1e8f9..2a4b3bf7403 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -26,6 +26,11 @@
#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
DEFINE_TRACE(name)
+#undef TRACE_EVENT_FN
+#define TRACE_EVENT_FN(name, proto, args, tstruct, \
+ assign, print, reg, unreg) \
+ DEFINE_TRACE_FN(name, reg, unreg)
+
#undef DECLARE_TRACE
#define DECLARE_TRACE(name, proto, args) \
DEFINE_TRACE(name)
@@ -56,6 +61,8 @@
#include <trace/ftrace.h>
#endif
+#undef TRACE_EVENT
+#undef TRACE_EVENT_FN
#undef TRACE_HEADER_MULTI_READ
/* Only undef what we defined in this file */
diff --git a/include/trace/events/module.h b/include/trace/events/module.h
new file mode 100644
index 00000000000..84160fb1847
--- /dev/null
+++ b/include/trace/events/module.h
@@ -0,0 +1,126 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM module
+
+#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MODULE_H
+
+#include <linux/tracepoint.h>
+
+#ifdef CONFIG_MODULES
+
+struct module;
+
+#define show_module_flags(flags) __print_flags(flags, "", \
+ { (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \
+ { (1UL << TAINT_FORCED_MODULE), "F" }, \
+ { (1UL << TAINT_CRAP), "C" })
+
+TRACE_EVENT(module_load,
+
+ TP_PROTO(struct module *mod),
+
+ TP_ARGS(mod),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, taints )
+ __string( name, mod->name )
+ ),
+
+ TP_fast_assign(
+ __entry->taints = mod->taints;
+ __assign_str(name, mod->name);
+ ),
+
+ TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
+);
+
+TRACE_EVENT(module_free,
+
+ TP_PROTO(struct module *mod),
+
+ TP_ARGS(mod),
+
+ TP_STRUCT__entry(
+ __string( name, mod->name )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, mod->name);
+ ),
+
+ TP_printk("%s", __get_str(name))
+);
+
+TRACE_EVENT(module_get,
+
+ TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
+
+ TP_ARGS(mod, ip, refcnt),
+
+ TP_STRUCT__entry(
+ __field( unsigned long, ip )
+ __field( int, refcnt )
+ __string( name, mod->name )
+ ),
+
+ TP_fast_assign(
+ __entry->ip = ip;
+ __entry->refcnt = refcnt;
+ __assign_str(name, mod->name);
+ ),
+
+ TP_printk("%s call_site=%pf refcnt=%d",
+ __get_str(name), (void *)__entry->ip, __entry->refcnt)
+);
+
+TRACE_EVENT(module_put,
+
+ TP_PROTO(struct module *mod, unsigned long ip, int refcnt),
+
+ TP_ARGS(mod, ip, refcnt),
+
+ TP_STRUCT__entry(
+ __field( unsigned long, ip )
+ __field( int, refcnt )
+ __string( name, mod->name )
+ ),
+
+ TP_fast_assign(
+ __entry->ip = ip;
+ __entry->refcnt = refcnt;
+ __assign_str(name, mod->name);
+ ),
+
+ TP_printk("%s call_site=%pf refcnt=%d",
+ __get_str(name), (void *)__entry->ip, __entry->refcnt)
+);
+
+TRACE_EVENT(module_request,
+
+ TP_PROTO(char *name, bool wait, unsigned long ip),
+
+ TP_ARGS(name, wait, ip),
+
+ TP_STRUCT__entry(
+ __field( bool, wait )
+ __field( unsigned long, ip )
+ __string( name, name )
+ ),
+
+ TP_fast_assign(
+ __entry->wait = wait;
+ __entry->ip = ip;
+ __assign_str(name, name);
+ ),
+
+ TP_printk("%s wait=%d call_site=%pf",
+ __get_str(name), (int)__entry->wait, (void *)__entry->ip)
+);
+
+#endif /* CONFIG_MODULES */
+
+#endif /* _TRACE_MODULE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
+
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index a4c369ec328..b48f1ad7c94 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -94,6 +94,7 @@ TRACE_EVENT(sched_wakeup,
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
+ __field( int, cpu )
),
TP_fast_assign(
@@ -101,11 +102,12 @@ TRACE_EVENT(sched_wakeup,
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
+ __entry->cpu = task_cpu(p);
),
- TP_printk("task %s:%d [%d] success=%d",
+ TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
- __entry->success)
+ __entry->success, __entry->cpu)
);
/*
@@ -125,6 +127,7 @@ TRACE_EVENT(sched_wakeup_new,
__field( pid_t, pid )
__field( int, prio )
__field( int, success )
+ __field( int, cpu )
),
TP_fast_assign(
@@ -132,11 +135,12 @@ TRACE_EVENT(sched_wakeup_new,
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->success = success;
+ __entry->cpu = task_cpu(p);
),
- TP_printk("task %s:%d [%d] success=%d",
+ TP_printk("task %s:%d [%d] success=%d [%03d]",
__entry->comm, __entry->pid, __entry->prio,
- __entry->success)
+ __entry->success, __entry->cpu)
);
/*
diff --git a/include/trace/events/syscalls.h b/include/trace/events/syscalls.h
new file mode 100644
index 00000000000..397dff2dbd5
--- /dev/null
+++ b/include/trace/events/syscalls.h
@@ -0,0 +1,70 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM syscalls
+
+#if !defined(_TRACE_EVENTS_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_EVENTS_SYSCALLS_H
+
+#include <linux/tracepoint.h>
+
+#include <asm/ptrace.h>
+#include <asm/syscall.h>
+
+
+#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
+
+extern void syscall_regfunc(void);
+extern void syscall_unregfunc(void);
+
+TRACE_EVENT_FN(sys_enter,
+
+ TP_PROTO(struct pt_regs *regs, long id),
+
+ TP_ARGS(regs, id),
+
+ TP_STRUCT__entry(
+ __field( long, id )
+ __array( unsigned long, args, 6 )
+ ),
+
+ TP_fast_assign(
+ __entry->id = id;
+ syscall_get_arguments(current, regs, 0, 6, __entry->args);
+ ),
+
+ TP_printk("NR %ld (%lx, %lx, %lx, %lx, %lx, %lx)",
+ __entry->id,
+ __entry->args[0], __entry->args[1], __entry->args[2],
+ __entry->args[3], __entry->args[4], __entry->args[5]),
+
+ syscall_regfunc, syscall_unregfunc
+);
+
+TRACE_EVENT_FN(sys_exit,
+
+ TP_PROTO(struct pt_regs *regs, long ret),
+
+ TP_ARGS(regs, ret),
+
+ TP_STRUCT__entry(
+ __field( long, id )
+ __field( long, ret )
+ ),
+
+ TP_fast_assign(
+ __entry->id = syscall_get_nr(current, regs);
+ __entry->ret = ret;
+ ),
+
+ TP_printk("NR %ld = %ld",
+ __entry->id, __entry->ret),
+
+ syscall_regfunc, syscall_unregfunc
+);
+
+#endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
+
+#endif /* _TRACE_EVENTS_SYSCALLS_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
+
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index f64fbaae781..308bafd9332 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -21,11 +21,14 @@
#undef __field
#define __field(type, item) type item;
+#undef __field_ext
+#define __field_ext(type, item, filter_type) type item;
+
#undef __array
#define __array(type, item, len) type item[len];
#undef __dynamic_array
-#define __dynamic_array(type, item, len) unsigned short __data_loc_##item;
+#define __dynamic_array(type, item, len) u32 __data_loc_##item;
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
@@ -42,6 +45,16 @@
}; \
static struct ftrace_event_call event_##name
+#undef __cpparg
+#define __cpparg(arg...) arg
+
+/* Callbacks are meaningless to ftrace. */
+#undef TRACE_EVENT_FN
+#define TRACE_EVENT_FN(name, proto, args, tstruct, \
+ assign, print, reg, unreg) \
+ TRACE_EVENT(name, __cpparg(proto), __cpparg(args), \
+ __cpparg(tstruct), __cpparg(assign), __cpparg(print)) \
+
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -51,23 +64,27 @@
* Include the following:
*
* struct ftrace_data_offsets_<call> {
- * int <item1>;
- * int <item2>;
+ * u32 <item1>;
+ * u32 <item2>;
* [...]
* };
*
- * The __dynamic_array() macro will create each int <item>, this is
+ * The __dynamic_array() macro will create each u32 <item>, this is
* to keep the offset of each array from the beginning of the event.
+ * The size of an array is also encoded, in the higher 16 bits of <item>.
*/
#undef __field
-#define __field(type, item);
+#define __field(type, item)
+
+#undef __field_ext
+#define __field_ext(type, item, filter_type)
#undef __array
#define __array(type, item, len)
#undef __dynamic_array
-#define __dynamic_array(type, item, len) int item;
+#define __dynamic_array(type, item, len) u32 item;
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
@@ -109,6 +126,9 @@
if (!ret) \
return 0;
+#undef __field_ext
+#define __field_ext(type, item, filter_type) __field(type, item)
+
#undef __array
#define __array(type, item, len) \
ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
@@ -120,7 +140,7 @@
#undef __dynamic_array
#define __dynamic_array(type, item, len) \
- ret = trace_seq_printf(s, "\tfield:__data_loc " #item ";\t" \
+ ret = trace_seq_printf(s, "\tfield:__data_loc " #type "[] " #item ";\t"\
"offset:%u;\tsize:%u;\n", \
(unsigned int)offsetof(typeof(field), \
__data_loc_##item), \
@@ -150,7 +170,8 @@
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
static int \
-ftrace_format_##call(struct trace_seq *s) \
+ftrace_format_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
{ \
struct ftrace_raw_##call field __attribute__((unused)); \
int ret = 0; \
@@ -210,7 +231,7 @@ ftrace_format_##call(struct trace_seq *s) \
#undef __get_dynamic_array
#define __get_dynamic_array(field) \
- ((void *)__entry + __entry->__data_loc_##field)
+ ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
#undef __get_str
#define __get_str(field) (char *)__get_dynamic_array(field)
@@ -263,28 +284,33 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#undef __field
-#define __field(type, item) \
+#undef __field_ext
+#define __field_ext(type, item, filter_type) \
ret = trace_define_field(event_call, #type, #item, \
offsetof(typeof(field), item), \
- sizeof(field.item), is_signed_type(type)); \
+ sizeof(field.item), \
+ is_signed_type(type), filter_type); \
if (ret) \
return ret;
+#undef __field
+#define __field(type, item) __field_ext(type, item, FILTER_OTHER)
+
#undef __array
#define __array(type, item, len) \
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
ret = trace_define_field(event_call, #type "[" #len "]", #item, \
offsetof(typeof(field), item), \
- sizeof(field.item), 0); \
+ sizeof(field.item), 0, FILTER_OTHER); \
if (ret) \
return ret;
#undef __dynamic_array
#define __dynamic_array(type, item, len) \
- ret = trace_define_field(event_call, "__data_loc" "[" #type "]", #item,\
- offsetof(typeof(field), __data_loc_##item), \
- sizeof(field.__data_loc_##item), 0);
+ ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
+ offsetof(typeof(field), __data_loc_##item), \
+ sizeof(field.__data_loc_##item), 0, \
+ FILTER_OTHER);
#undef __string
#define __string(item, src) __dynamic_array(char, item, -1)
@@ -292,17 +318,14 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
int \
-ftrace_define_fields_##call(void) \
+ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
struct ftrace_raw_##call field; \
- struct ftrace_event_call *event_call = &event_##call; \
int ret; \
\
- __common_field(int, type, 1); \
- __common_field(unsigned char, flags, 0); \
- __common_field(unsigned char, preempt_count, 0); \
- __common_field(int, pid, 1); \
- __common_field(int, tgid, 1); \
+ ret = trace_define_common_fields(event_call); \
+ if (ret) \
+ return ret; \
\
tstruct; \
\
@@ -321,6 +344,9 @@ ftrace_define_fields_##call(void) \
#undef __field
#define __field(type, item)
+#undef __field_ext
+#define __field_ext(type, item, filter_type)
+
#undef __array
#define __array(type, item, len)
@@ -328,6 +354,7 @@ ftrace_define_fields_##call(void) \
#define __dynamic_array(type, item, len) \
__data_offsets->item = __data_size + \
offsetof(typeof(*entry), __data); \
+ __data_offsets->item |= (len * sizeof(type)) << 16; \
__data_size += (len) * sizeof(type);
#undef __string
@@ -433,13 +460,15 @@ static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
* {
* struct ring_buffer_event *event;
* struct ftrace_raw_<call> *entry; <-- defined in stage 1
+ * struct ring_buffer *buffer;
* unsigned long irq_flags;
* int pc;
*
* local_save_flags(irq_flags);
* pc = preempt_count();
*
- * event = trace_current_buffer_lock_reserve(event_<call>.id,
+ * event = trace_current_buffer_lock_reserve(&buffer,
+ * event_<call>.id,
* sizeof(struct ftrace_raw_<call>),
* irq_flags, pc);
* if (!event)
@@ -449,7 +478,7 @@ static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
* <assign>; <-- Here we assign the entries by the __field and
* __array macros.
*
- * trace_current_buffer_unlock_commit(event, irq_flags, pc);
+ * trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc);
* }
*
* static int ftrace_raw_reg_event_<call>(void)
@@ -541,6 +570,7 @@ static void ftrace_raw_event_##call(proto) \
struct ftrace_event_call *event_call = &event_##call; \
struct ring_buffer_event *event; \
struct ftrace_raw_##call *entry; \
+ struct ring_buffer *buffer; \
unsigned long irq_flags; \
int __data_size; \
int pc; \
@@ -550,7 +580,8 @@ static void ftrace_raw_event_##call(proto) \
\
__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
\
- event = trace_current_buffer_lock_reserve(event_##call.id, \
+ event = trace_current_buffer_lock_reserve(&buffer, \
+ event_##call.id, \
sizeof(*entry) + __data_size, \
irq_flags, pc); \
if (!event) \
@@ -562,11 +593,12 @@ static void ftrace_raw_event_##call(proto) \
\
{ assign; } \
\
- if (!filter_current_check_discard(event_call, entry, event)) \
- trace_nowake_buffer_unlock_commit(event, irq_flags, pc); \
+ if (!filter_current_check_discard(buffer, event_call, entry, event)) \
+ trace_nowake_buffer_unlock_commit(buffer, \
+ event, irq_flags, pc); \
} \
\
-static int ftrace_raw_reg_event_##call(void) \
+static int ftrace_raw_reg_event_##call(void *ptr) \
{ \
int ret; \
\
@@ -577,7 +609,7 @@ static int ftrace_raw_reg_event_##call(void) \
return ret; \
} \
\
-static void ftrace_raw_unreg_event_##call(void) \
+static void ftrace_raw_unreg_event_##call(void *ptr) \
{ \
unregister_trace_##call(ftrace_raw_event_##call); \
} \
@@ -595,7 +627,6 @@ static int ftrace_raw_init_event_##call(void) \
return -ENODEV; \
event_##call.id = id; \
INIT_LIST_HEAD(&event_##call.fields); \
- init_preds(&event_##call); \
return 0; \
} \
\
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 8cfe515cbc4..5dc283ba5ae 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -1,8 +1,13 @@
#ifndef _TRACE_SYSCALL_H
#define _TRACE_SYSCALL_H
+#include <linux/tracepoint.h>
+#include <linux/unistd.h>
+#include <linux/ftrace_event.h>
+
#include <asm/ptrace.h>
+
/*
* A syscall entry in the ftrace syscalls array.
*
@@ -10,26 +15,49 @@
* @nb_args: number of parameters it takes
* @types: list of types as strings
* @args: list of args as strings (args[i] matches types[i])
+ * @enter_id: associated ftrace enter event id
+ * @exit_id: associated ftrace exit event id
+ * @enter_event: associated syscall_enter trace event
+ * @exit_event: associated syscall_exit trace event
*/
struct syscall_metadata {
const char *name;
int nb_args;
const char **types;
const char **args;
+ int enter_id;
+ int exit_id;
+
+ struct ftrace_event_call *enter_event;
+ struct ftrace_event_call *exit_event;
};
#ifdef CONFIG_FTRACE_SYSCALLS
-extern void arch_init_ftrace_syscalls(void);
extern struct syscall_metadata *syscall_nr_to_meta(int nr);
-extern void start_ftrace_syscalls(void);
-extern void stop_ftrace_syscalls(void);
-extern void ftrace_syscall_enter(struct pt_regs *regs);
-extern void ftrace_syscall_exit(struct pt_regs *regs);
-#else
-static inline void start_ftrace_syscalls(void) { }
-static inline void stop_ftrace_syscalls(void) { }
-static inline void ftrace_syscall_enter(struct pt_regs *regs) { }
-static inline void ftrace_syscall_exit(struct pt_regs *regs) { }
+extern int syscall_name_to_nr(char *name);
+void set_syscall_enter_id(int num, int id);
+void set_syscall_exit_id(int num, int id);
+extern struct trace_event event_syscall_enter;
+extern struct trace_event event_syscall_exit;
+extern int reg_event_syscall_enter(void *ptr);
+extern void unreg_event_syscall_enter(void *ptr);
+extern int reg_event_syscall_exit(void *ptr);
+extern void unreg_event_syscall_exit(void *ptr);
+extern int syscall_enter_format(struct ftrace_event_call *call,
+ struct trace_seq *s);
+extern int syscall_exit_format(struct ftrace_event_call *call,
+ struct trace_seq *s);
+extern int syscall_enter_define_fields(struct ftrace_event_call *call);
+extern int syscall_exit_define_fields(struct ftrace_event_call *call);
+enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
+enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
+#endif
+#ifdef CONFIG_EVENT_PROFILE
+int reg_prof_syscall_enter(char *name);
+void unreg_prof_syscall_enter(char *name);
+int reg_prof_syscall_exit(char *name);
+void unreg_prof_syscall_exit(char *name);
+
#endif
#endif /* _TRACE_SYSCALL_H */