x86: signal: introduce helper macro is_ia32

Introduce new macro is_ia32 for unification of setup_rt_frame().
No effect in binary, compiler will optimize.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 4 deletions

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index c5d80024a8f3..53f86d95985b 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -286,6 +286,12 @@ static int signr_convert(int sig)
         return sig;
 }
 
+#ifdef CONFIG_IA32_EMULATION
+#define is_ia32 test_thread_flag(TIF_IA32)
+#else
+#define is_ia32 0
+#endif
+
 static int
 setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
                sigset_t *set, struct pt_regs *regs)
@@ -293,15 +299,14 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
         int usig = signr_convert(sig);
         int ret;
 
-#ifdef CONFIG_IA32_EMULATION
-        if (test_thread_flag(TIF_IA32)) {
+        /* Set up the stack frame */
+        if (is_ia32) {
                 if (ka->sa.sa_flags & SA_SIGINFO)
                         ret = ia32_setup_rt_frame(usig, ka, info, set, regs);
                 else
                         ret = ia32_setup_frame(usig, ka, set, regs);
         } else
-#endif
-        ret = __setup_rt_frame(sig, ka, info, set, regs);
+                ret = __setup_rt_frame(sig, ka, info, set, regs);
 
         if (ret) {
                 force_sigsegv(sig, current);