diff options
| author | Andy Lutomirski <luto@MIT.EDU> | 2011-08-03 09:31:54 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-08-04 16:13:53 -0700 |
| commit | c149a665ac488e0dac22a42287f45ad1bda06ff1 (patch) | |
| tree | 0f2d945f47e98ae5aefb779850a39bb7462c4417 /arch/x86/kernel/vsyscall_trace.h | |
| parent | 318f5a2a672152328c9fb4dead504b89ec738a43 (diff) | |
x86-64: Add vsyscall:emulate_vsyscall trace event
Vsyscall emulation is slow, so make it easy to track down.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/cdaad7da946a80b200df16647c1700db3e1171e9.1312378163.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/vsyscall_trace.h')
| -rw-r--r-- | arch/x86/kernel/vsyscall_trace.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/kernel/vsyscall_trace.h b/arch/x86/kernel/vsyscall_trace.h new file mode 100644 index 00000000000..a8b2edec54f --- /dev/null +++ b/arch/x86/kernel/vsyscall_trace.h @@ -0,0 +1,29 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM vsyscall + +#if !defined(__VSYSCALL_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define __VSYSCALL_TRACE_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(emulate_vsyscall, + + TP_PROTO(int nr), + + TP_ARGS(nr), + + TP_STRUCT__entry(__field(int, nr)), + + TP_fast_assign( + __entry->nr = nr; + ), + + TP_printk("nr = %d", __entry->nr) +); + +#endif + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH ../../arch/x86/kernel +#define TRACE_INCLUDE_FILE vsyscall_trace +#include <trace/define_trace.h> |