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| author | Jason Baron <jbaron@redhat.com> | 2009-08-10 16:52:47 -0400 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-11 20:35:28 +0200 |
| commit | fb34a08c3469b2be9eae626ccb96476b4687b810 (patch) | |
| tree | f308cd109de2c967a1f8bd485eb9c398992a9414 /include/trace/syscall.h | |
| parent | 69fd4f0eb2ececbf8ade55e31a933e174965745e (diff) | |
| download | lwn-fb34a08c3469b2be9eae626ccb96476b4687b810.tar.gz lwn-fb34a08c3469b2be9eae626ccb96476b4687b810.zip | |
tracing: Add trace events for each syscall entry/exit
Layer Frederic's syscall tracer on tracepoints. We create trace events
via hooking into the SYSCALL_DEFINE macros. This allows us to
individually toggle syscall entry and exit points on/off.
Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jiaying Zhang <jiayingz@google.com>
Cc: Martin Bligh <mbligh@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'include/trace/syscall.h')
| -rw-r--r-- | include/trace/syscall.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 3951d774de18..73fb8b4a9955 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -2,6 +2,8 @@ #define _TRACE_SYSCALL_H #include <linux/tracepoint.h> +#include <linux/unistd.h> +#include <linux/ftrace_event.h> #include <asm/ptrace.h> @@ -40,15 +42,13 @@ struct syscall_metadata { #ifdef CONFIG_FTRACE_SYSCALLS 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); +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); #endif #endif /* _TRACE_SYSCALL_H */ |