diff mbox series

[v2,4/8] powerpc/signal64: Remove TM ifdefery in middle of if/else block

Message ID 20201105051701.25053-5-cmr@codefail.de (mailing list archive)
State Superseded
Headers show
Series Improve signal performance on PPC64 with KUAP | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (58b9041431fcf9f3f87c8def87ca82dd54cf80dd)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (3cea11cd5e3b00d91caf0b4730194039b45c5891)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (4ef8451b332662d004df269d4cdeb7d9f31419b5)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (1344a232016dbb0492be81f8517c4bf8fc1c6610)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linux-next (cf7cd542d1b538f6e9e83490bc090dd773f4266d)
snowpatch_ozlabs/apply_patch fail Failed to apply to any branch

Commit Message

Christopher M. Riedl Nov. 5, 2020, 5:16 a.m. UTC 
Similar to commit 1c32940f5220 ("powerpc/signal32: Remove ifdefery in
middle of if/else") for PPC32, remove the messy ifdef. Unlike PPC32, the
ifdef cannot be removed entirely since the uc_transact member of the
sigframe depends on CONFIG_PPC_TRANSACTIONAL_MEM=y.

Signed-off-by: Christopher M. Riedl <cmr@codefail.de>
---
 arch/powerpc/kernel/signal_64.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index ece1f982dd05..d3e9519b2e62 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -710,9 +710,7 @@  SYSCALL_DEFINE0(rt_sigreturn)
 	struct pt_regs *regs = current_pt_regs();
 	struct ucontext __user *uc = (struct ucontext __user *)regs->gpr[1];
 	sigset_t set;
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 	unsigned long msr;
-#endif
 
 	/* Always make any pending restarted system calls return -EINTR */
 	current->restart_block.fn = do_no_restart_syscall;
@@ -762,10 +760,12 @@  SYSCALL_DEFINE0(rt_sigreturn)
 	 * restore_tm_sigcontexts.
 	 */
 	regs->msr &= ~MSR_TS_MASK;
+#endif
 
 	if (__get_user(msr, &uc->uc_mcontext.gp_regs[PT_MSR]))
 		goto badframe;
 	if (MSR_TM_ACTIVE(msr)) {
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 		/* We recheckpoint on return. */
 		struct ucontext __user *uc_transact;
 
@@ -778,9 +778,8 @@  SYSCALL_DEFINE0(rt_sigreturn)
 		if (restore_tm_sigcontexts(current, &uc->uc_mcontext,
 					   &uc_transact->uc_mcontext))
 			goto badframe;
-	} else
 #endif
-	{
+	} else {
 		/*
 		 * Fall through, for non-TM restore
 		 *
@@ -818,10 +817,8 @@  int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
 	unsigned long newsp = 0;
 	long err = 0;
 	struct pt_regs *regs = tsk->thread.regs;
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 	/* Save the thread's msr before get_tm_stackpointer() changes it */
-	unsigned long msr = regs->msr;
-#endif
+	unsigned long msr __maybe_unused = regs->msr;
 
 	frame = get_sigframe(ksig, tsk, sizeof(*frame), 0);
 	if (!access_ok(frame, sizeof(*frame)))
@@ -836,8 +833,9 @@  int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __save_altstack(&frame->uc.uc_stack, regs->gpr[1]);
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+
 	if (MSR_TM_ACTIVE(msr)) {
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 		/* The ucontext_t passed to userland points to the second
 		 * ucontext_t (for transactional state) with its uc_link ptr.
 		 */
@@ -847,9 +845,8 @@  int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
 					    tsk, ksig->sig, NULL,
 					    (unsigned long)ksig->ka.sa.sa_handler,
 					    msr);
-	} else
 #endif
-	{
+	} else {
 		err |= __put_user(0, &frame->uc.uc_link);
 		prepare_setup_sigcontext(tsk, 1);
 		err |= setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,