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| author |   Paul Mundt <lethal@linux-sh.org> | 2007-09-28 15:21:51 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-09-28 15:21:51 +0900 |
| commit | e5137682a1ad48bc5306070935c277e262f119ef (patch) | |
| tree | 97b11fe0f9bdf0249e996808d374bf4e2d59aadd /arch/sh | |
| parent | sh: __copy_user() optimizations for small copies. (diff) | |
| download | linux-dev-e5137682a1ad48bc5306070935c277e262f119ef.tar.xz linux-dev-e5137682a1ad48bc5306070935c277e262f119ef.zip | |
sh: Tidy up gUSA preempt handling.
Currently gUSA toggles hardirqs to disable preemption in the signal
handler. Make the preemption toggling explicit, and kill off some
CONFIG_PREEMPT ifdefs in the process.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/kernel/signal.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/sh/kernel/signal.c b/arch/sh/kernel/signal.c index 706d81ccd101..0f657d32ceb9 100644 --- a/arch/sh/kernel/signal.c +++ b/arch/sh/kernel/signal.c @@ -509,11 +509,8 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, } } else { /* gUSA handling */ -#ifdef CONFIG_PREEMPT - unsigned long flags; + preempt_disable(); - local_irq_save(flags); -#endif if (regs->regs[15] >= 0xc0000000) { int offset = (int)regs->regs[15]; @@ -524,9 +521,8 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, regs->pc = regs->regs[0] + offset - instruction_size(ctrl_inw(regs->pc-4)); } -#ifdef CONFIG_PREEMPT - local_irq_restore(flags); -#endif + + preempt_enable_no_resched(); } /* Set up the stack frame */ |