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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:02:59 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:02:59 +0900
commit1006fae359cc810c16354805c0cffbb6ffee602e (patch)
treebd69f7a235f679a8336b237ed9722bb7f64db39a /arch/powerpc
parent70fdcb83db15c85a0495b07dc55d9347a4c2efd9 (diff)
parent5702941eec32cfd7b8cf9e36a0936e48170011a4 (diff)
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull IRQ changes from Ingo Molnar: "The biggest change this cycle are the softirq/hardirq stack interaction and nesting fixes, cleanups and reorganizations from Frederic. This is the longer followup story to the softirq nesting fix that is already upstream (commit ded797547548: "irq: Force hardirq exit's softirq processing on its own stack")" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: bcm2835: Convert to use IRQCHIP_DECLARE macro powerpc: Tell about irq stack coverage x86: Tell about irq stack coverage irq: Optimize softirq stack selection in irq exit irq: Justify the various softirq stack choices irq: Improve a bit softirq debugging irq: Optimize call to softirq on hardirq exit irq: Consolidate do_softirq() arch overriden implementations x86/irq: Correct comment about i8259 initialization
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/kernel/irq.c17
2 files changed, 2 insertions, 16 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 38f3b7e47ec..b365d5cbb72 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -138,6 +138,7 @@ config PPC
select OLD_SIGSUSPEND
select OLD_SIGACTION if PPC32
select HAVE_DEBUG_STACKOVERFLOW
+ select HAVE_IRQ_EXIT_ON_IRQ_STACK
config EARLY_PRINTK
bool
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index c7cb8c232d2..ba016561521 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -594,7 +594,7 @@ void irq_ctx_init(void)
}
}
-static inline void do_softirq_onstack(void)
+void do_softirq_own_stack(void)
{
struct thread_info *curtp, *irqtp;
@@ -612,21 +612,6 @@ static inline void do_softirq_onstack(void)
set_bits(irqtp->flags, &curtp->flags);
}
-void do_softirq(void)
-{
- unsigned long flags;
-
- if (in_interrupt())
- return;
-
- local_irq_save(flags);
-
- if (local_softirq_pending())
- do_softirq_onstack();
-
- local_irq_restore(flags);
-}
-
irq_hw_number_t virq_to_hw(unsigned int virq)
{
struct irq_data *irq_data = irq_get_irq_data(virq);