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authorJason Baron <jbaron@redhat.com>2009-08-10 20:52:31 (GMT)
committerFrederic Weisbecker <fweisbec@gmail.com>2009-08-11 18:35:26 (GMT)
commita871bd33a6c0bc86fb47cd02ea2650dd43d3d95f (patch)
treeb5720cdb3168ba0894b4bd2c1acc004cb19a692c /arch/x86/kernel/ptrace.c
parent63fbdab3157b72467013fe4dcf88c85e45280ef7 (diff)
downloadlinux-a871bd33a6c0bc86fb47cd02ea2650dd43d3d95f.tar.xz
tracing: Add syscall tracepoints
add two tracepoints in syscall exit and entry path, conditioned on TIF_SYSCALL_FTRACE. Supports the syscall trace event code. 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 'arch/x86/kernel/ptrace.c')
-rw-r--r--arch/x86/kernel/ptrace.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 09ecbde..34dd6f1 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -37,6 +37,9 @@
#include <trace/syscall.h>
+DEFINE_TRACE(syscall_enter);
+DEFINE_TRACE(syscall_exit);
+
#include "tls.h"
enum x86_regset {
@@ -1498,7 +1501,7 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs)
ret = -1L;
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
- ftrace_syscall_enter(regs);
+ trace_syscall_enter(regs, regs->orig_ax);
if (unlikely(current->audit_context)) {
if (IS_IA32)
@@ -1524,7 +1527,7 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
- ftrace_syscall_exit(regs);
+ trace_syscall_exit(regs, regs->ax);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);