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MIPS: Make the die_lock be raw

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On preempt-rt this lock needs to be raw, so it does not get converted
to a sleeping spinlock. Trying to sleep in a panic is not really
desireable.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2636/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin 2011-07-23 12:41:24 +00:00 committed by Ralf Baechle
parent 49de830ad7
commit 4d85f6afa4
1 changed files with 3 additions and 3 deletions
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6
arch/mips/kernel/traps.c
View file

@ -364,7 +364,7 @@ static int regs_to_trapnr(struct pt_regs *regs)
return (regs->cp0_cause >> 2) & 0x1f;
}
static DEFINE_SPINLOCK(die_lock);
static DEFINE_RAW_SPINLOCK(die_lock);
void __noreturn die(const char *str, struct pt_regs *regs)
{
@ -378,7 +378,7 @@ void __noreturn die(const char *str, struct pt_regs *regs)
sig = 0;
console_verbose();
spin_lock_irq(&die_lock);
raw_spin_lock_irq(&die_lock);
bust_spinlocks(1);
#ifdef CONFIG_MIPS_MT_SMTC
mips_mt_regdump(dvpret);
@ -387,7 +387,7 @@ void __noreturn die(const char *str, struct pt_regs *regs)
printk("%s[#%d]:\n", str, ++die_counter);
show_registers(regs);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
raw_spin_unlock_irq(&die_lock);
if (in_interrupt())
panic("Fatal exception in interrupt");