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authorLiu Xiang <liu.xiang6@zte.com.cn>2019-02-16 17:12:24 +0800
committerPaul Burton <paul.burton@mips.com>2019-02-19 12:45:01 -0800
commit72faa7a773ca59336f3c889e878de81445c5a85c (patch)
tree2d7240cb8daa56078451ea784820c90f9c9f5a16 /arch/mips
parentMIPS: dma-noncoherent: Remove bogus condition in dma_sync_phys() (diff)
downloadlinux-dev-72faa7a773ca59336f3c889e878de81445c5a85c.tar.xz
linux-dev-72faa7a773ca59336f3c889e878de81445c5a85c.zip
MIPS: irq: Allocate accurate order pages for irq stack
The irq_pages is the number of pages for irq stack, but not the order which is needed by __get_free_pages(). We can use get_order() to calculate the accurate order. Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn> Signed-off-by: Paul Burton <paul.burton@mips.com> Fixes: fe8bd18ffea5 ("MIPS: Introduce irq_stack") Cc: linux-mips@vger.kernel.org Cc: stable@vger.kernel.org # v4.11+
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/kernel/irq.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index ba150c755fcc..85b6c60f285d 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -52,6 +52,7 @@ asmlinkage void spurious_interrupt(void)
void __init init_IRQ(void)
{
int i;
+ unsigned int order = get_order(IRQ_STACK_SIZE);
for (i = 0; i < NR_IRQS; i++)
irq_set_noprobe(i);
@@ -62,8 +63,7 @@ void __init init_IRQ(void)
arch_init_irq();
for_each_possible_cpu(i) {
- int irq_pages = IRQ_STACK_SIZE / PAGE_SIZE;
- void *s = (void *)__get_free_pages(GFP_KERNEL, irq_pages);
+ void *s = (void *)__get_free_pages(GFP_KERNEL, order);
irq_stack[i] = s;
pr_debug("CPU%d IRQ stack at 0x%p - 0x%p\n", i,