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| author | Christoph Hellwig <hch@lst.de> | 2010-06-02 22:24:26 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-06-15 15:02:37 +1000 |
| commit | f1ba9a5b2ab7d3f5a910d93371c4f22b636b7683 (patch) | |
| tree | 027523e8302d0851acd8e472acff9c81030abc94 /arch/powerpc/kernel/irq.c | |
| parent | b636f1379eefe6eba931deaa386605bc7ac623e7 (diff) | |
| download | kernel_samsung_smdk4412-f1ba9a5b2ab7d3f5a910d93371c4f22b636b7683.zip kernel_samsung_smdk4412-f1ba9a5b2ab7d3f5a910d93371c4f22b636b7683.tar.gz kernel_samsung_smdk4412-f1ba9a5b2ab7d3f5a910d93371c4f22b636b7683.tar.bz2 | |
powerpc: Unconditionally enabled irq stacks
Irq stacks provide an essential protection from stack overflows through
external interrupts, at the cost of two additionals stacks per CPU.
Enable them unconditionally to simplify the kernel build and prevent
people from accidentally disabling them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/irq.c')
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 30817d9..3333bbd 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -317,7 +317,6 @@ void fixup_irqs(const struct cpumask *map) } #endif -#ifdef CONFIG_IRQSTACKS static inline void handle_one_irq(unsigned int irq) { struct thread_info *curtp, *irqtp; @@ -358,12 +357,6 @@ static inline void handle_one_irq(unsigned int irq) if (irqtp->flags) set_bits(irqtp->flags, &curtp->flags); } -#else -static inline void handle_one_irq(unsigned int irq) -{ - generic_handle_irq(irq); -} -#endif static inline void check_stack_overflow(void) { @@ -455,7 +448,6 @@ void exc_lvl_ctx_init(void) } #endif -#ifdef CONFIG_IRQSTACKS struct thread_info *softirq_ctx[NR_CPUS] __read_mostly; struct thread_info *hardirq_ctx[NR_CPUS] __read_mostly; @@ -492,10 +484,6 @@ static inline void do_softirq_onstack(void) irqtp->task = NULL; } -#else -#define do_softirq_onstack() __do_softirq() -#endif /* CONFIG_IRQSTACKS */ - void do_softirq(void) { unsigned long flags; |