Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...

[firefly-linux-kernel-4.4.55.git] / arch / c6x / kernel / signal.c

diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c
index cf37478c1169c59411bc6926142c020a6348ec26..3d8f3c22a94fa0adf7e66fe2a793a65326759990 100644 (file)
--- a/arch/c6x/kernel/signal.c
+++ b/arch/c6x/kernel/signal.c
@@ -20,8 +20,6 @@
 #include <asm/cacheflush.h>
 
 
-#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
 /*
  * Do a signal return, undo the signal stack.
  */
@@ -87,7 +85,6 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs)
        if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
                goto badframe;
 
-       sigdelsetmask(&set, ~_BLOCKABLE);
        set_current_blocked(&set);
 
        if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
@@ -248,10 +245,9 @@ do_restart:
 /*
  * handle the actual delivery of a signal to userspace
  */
-static int handle_signal(int sig,
+static void handle_signal(int sig,
                         siginfo_t *info, struct k_sigaction *ka,
-                        sigset_t *oldset, struct pt_regs *regs,
-                        int syscall)
+                        struct pt_regs *regs, int syscall)
 {
        int ret;
 
@@ -278,11 +274,9 @@ static int handle_signal(int sig,
        }
 
        /* Set up the stack frame */
-       ret = setup_rt_frame(sig, ka, info, oldset, regs);
-       if (ret == 0)
-               block_sigmask(ka, sig);
-
-       return ret;
+       if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0)
+               return;
+       signal_delivered(sig, info, ka, regs, 0);
 }
 
 /*
@@ -292,7 +286,6 @@ static void do_signal(struct pt_regs *regs, int syscall)
 {
        struct k_sigaction ka;
        siginfo_t info;
-       sigset_t *oldset;
        int signr;
 
        /* we want the common case to go fast, which is why we may in certain
@@ -300,25 +293,9 @@ static void do_signal(struct pt_regs *regs, int syscall)
        if (!user_mode(regs))
                return;
 
-       if (test_thread_flag(TIF_RESTORE_SIGMASK))
-               oldset = &current->saved_sigmask;
-       else
-               oldset = &current->blocked;
-
        signr = get_signal_to_deliver(&info, &ka, regs, NULL);
        if (signr > 0) {
-               if (handle_signal(signr, &info, &ka, oldset,
-                                 regs, syscall) == 0) {
-                       /* a signal was successfully delivered; the saved
-                        * sigmask will have been stored in the signal frame,
-                        * and will be restored by sigreturn, so we can simply
-                        * clear the TIF_RESTORE_SIGMASK flag */
-                       if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                               clear_thread_flag(TIF_RESTORE_SIGMASK);
-
-                       tracehook_signal_handler(signr, &info, &ka, regs, 0);
-               }
-
+               handle_signal(signr, &info, &ka, regs, syscall);
                return;
        }
 
@@ -343,10 +320,7 @@ static void do_signal(struct pt_regs *regs, int syscall)
 
        /* if there's no signal to deliver, we just put the saved sigmask
         * back */
-       if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-               clear_thread_flag(TIF_RESTORE_SIGMASK);
-               sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-       }
+       restore_saved_sigmask();
 }
 
 /*
@@ -357,14 +331,11 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
                                 int syscall)
 {
        /* deal with pending signal delivery */
-       if (thread_info_flags & ((1 << TIF_SIGPENDING) |
-                                (1 << TIF_RESTORE_SIGMASK)))
+       if (thread_info_flags & (1 << TIF_SIGPENDING))
                do_signal(regs, syscall);
 
        if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) {
                clear_thread_flag(TIF_NOTIFY_RESUME);
                tracehook_notify_resume(regs);
-               if (current->replacement_session_keyring)
-                       key_replace_session_keyring();
        }
 }