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| author | Thomas Gleixner <tglx@linutronix.de> | 2014-05-07 15:44:20 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-05-16 14:05:22 +0200 |
| commit | be4034016c11f8913d38fccf692007fab1c50be1 (patch) | |
| tree | b1f94d3d19f4104d5f237328b4c126ed83f1b68e /arch/s390 | |
| parent | 5fdaf1bf8a60f73a11cb4431fd06daa2b295a327 (diff) | |
| download | blackbird-op-linux-be4034016c11f8913d38fccf692007fab1c50be1.tar.gz blackbird-op-linux-be4034016c11f8913d38fccf692007fab1c50be1.zip | |
s390: Avoid call to irq_reserve_irqs()
There is no need to mark the lower interrupts as reserved in order to
exclude them from dynamic allocation.
Provide arch_dynirq_lower_bound() to exclude the lower space.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Link: http://lkml.kernel.org/r/20140507154339.811205235@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/irq.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 2fb099809d5d..99b0b09646ca 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -92,7 +92,6 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = { void __init init_IRQ(void) { - irq_reserve_irqs(0, THIN_INTERRUPT); init_cio_interrupts(); init_airq_interrupts(); init_ext_interrupts(); @@ -151,6 +150,11 @@ out: return 0; } +unsigned int arch_dynirq_lower_bound(unsigned int from) +{ + return from < THIN_INTERRUPT ? THIN_INTERRUPT : from; +} + /* * Switch to the asynchronous interrupt stack for softirq execution. */ |
