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Commit e5137682 authored by Paul Mundt's avatar Paul Mundt
Browse files

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: default avatarPaul Mundt <lethal@linux-sh.org>
parent 023ef184

arch/sh/kernel/signal.c

+3 −7
Original line number Diff line number Diff line
@@ -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 */