aboutsummaryrefslogtreecommitdiff
path: root/arch/xtensa
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2012-04-22 00:59:07 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-05-21 23:58:06 -0400
commit9ccc9c75c9117d18a9b1f71a21f0066b1eb9db6f (patch)
treebbc68a45dc8e98dd12339e4c7df6a088a342bbf3 /arch/xtensa
parent446cdd13275bfa38b858a1e99dbd61c07c9767c0 (diff)
downloadlinux-linaro-stable-9ccc9c75c9117d18a9b1f71a21f0066b1eb9db6f.tar.gz
xtensa: switch to generic rt_sigsuspend(2)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/syscall.h2
-rw-r--r--arch/xtensa/include/asm/unistd.h2
-rw-r--r--arch/xtensa/kernel/entry.S1
-rw-r--r--arch/xtensa/kernel/signal.c54
4 files changed, 16 insertions, 43 deletions
diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
index efcf33b92e4c..fc289f7e8ebc 100644
--- a/arch/xtensa/include/asm/syscall.h
+++ b/arch/xtensa/include/asm/syscall.h
@@ -15,8 +15,6 @@ asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*);
asmlinkage long xtensa_ptrace(long, long, long, long);
asmlinkage long xtensa_sigreturn(struct pt_regs*);
asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
-asmlinkage long xtensa_sigsuspend(struct pt_regs*);
-asmlinkage long xtensa_rt_sigsuspend(struct pt_regs*);
asmlinkage long xtensa_sigaction(int, const struct old_sigaction*,
struct old_sigaction*);
asmlinkage long xtensa_sigaltstack(struct pt_regs *regs);
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index 798ee6d285a1..bc7e005faa60 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -507,7 +507,7 @@ __SYSCALL(229, sys_rt_sigtimedwait, 4)
#define __NR_rt_sigqueueinfo 230
__SYSCALL(230, sys_rt_sigqueueinfo, 3)
#define __NR_rt_sigsuspend 231
-__SYSCALL(231, xtensa_rt_sigsuspend, 2)
+__SYSCALL(231, sys_rt_sigsuspend, 2)
/* Message */
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 6223f3346b5c..b1bb6d79d8b9 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -418,7 +418,6 @@ common_exception_return:
movi a4, do_signal # int do_signal(struct pt_regs*, sigset_t*)
mov a6, a1
- movi a7, 0
callx4 a4
j 1b
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index 44e9329a6484..bb00cc470ca9 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -31,8 +31,6 @@
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
-
extern struct task_struct *coproc_owners[];
struct rt_sigframe
@@ -429,37 +427,6 @@ give_sigsegv:
return -EFAULT;
}
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-
-asmlinkage long xtensa_rt_sigsuspend(sigset_t __user *unewset,
- size_t sigsetsize,
- long a2, long a3, long a4, long a5,
- struct pt_regs *regs)
-{
- sigset_t saveset, newset;
-
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
-
- sigdelsetmask(&newset, ~_BLOCKABLE);
- saveset = current->blocked;
- set_current_blocked(&newset);
-
- regs->areg[2] = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(regs, &saveset))
- return -EINTR;
- }
-}
-
asmlinkage long xtensa_sigaltstack(const stack_t __user *uss,
stack_t __user *uoss,
long a2, long a3, long a4, long a5,
@@ -479,19 +446,22 @@ asmlinkage long xtensa_sigaltstack(const stack_t __user *uss,
* the kernel can handle, and then we build all the user-level signal handling
* stack-frames in one go after that.
*/
-int do_signal(struct pt_regs *regs, sigset_t *oldset)
+void do_signal(struct pt_regs *regs)
{
siginfo_t info;
int signr;
struct k_sigaction ka;
+ sigset_t oldset;
if (!user_mode(regs))
- return 0;
+ return;
if (try_to_freeze())
goto no_signal;
- if (!oldset)
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = &current->saved_sigmask;
+ else
oldset = &current->blocked;
task_pt_regs(current)->icountlevel = 0;
@@ -535,13 +505,14 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
/* Set up the stack frame */
ret = setup_frame(signr, &ka, &info, oldset, regs);
if (ret)
- return ret;
+ return;
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
block_sigmask(&ka, signr);
if (current->ptrace & PT_SINGLESTEP)
task_pt_regs(current)->icountlevel = 1;
- return 1;
+ return;
}
no_signal:
@@ -561,8 +532,13 @@ no_signal:
break;
}
}
+
+ /* If there's no signal to deliver, we just restore the saved mask. */
+ if (test_and_clear_thread_flag(TIF_RESTORE_SIGMASK))
+ set_current_blocked(&current->saved_sigmask);
+
if (current->ptrace & PT_SINGLESTEP)
task_pt_regs(current)->icountlevel = 1;
- return 0;
+ return;
}