sh: Add ftrace syscall tracing support

Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 3392e835a374..c198eceaee94 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -34,6 +34,8 @@
 #include <asm/syscalls.h>
 #include <asm/fpu.h>
 
+#include <trace/syscall.h>
+
 /*
  * This routine will get a word off of the process kernel stack.
  */
@@ -459,6 +461,9 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
                  */
                 ret = -1L;
 
+        if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
+                ftrace_syscall_enter(regs);
+
         if (unlikely(current->audit_context))
                 audit_syscall_entry(audit_arch(), regs->regs[3],
                                     regs->regs[4], regs->regs[5],
@@ -475,6 +480,9 @@ asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
                 audit_syscall_exit(AUDITSC_RESULT(regs->regs[0]),
                                    regs->regs[0]);
 
+        if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
+                ftrace_syscall_exit(regs);
+
         step = test_thread_flag(TIF_SINGLESTEP);
         if (step || test_thread_flag(TIF_SYSCALL_TRACE))
                 tracehook_report_syscall_exit(regs, step);