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Commit 96e54049 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files

[PATCH] Fix a irqcount comment in entry.S 



Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 4f7fd4d7

arch/x86_64/kernel/entry.S

+6 −1
Original line number Diff line number Diff line
@@ -519,7 +519,12 @@ END(stub_rt_sigreturn) 
	testl $3,CS(%rdi)

	je 1f

	swapgs	

1:	incl	%gs:pda_irqcount	# RED-PEN should check preempt count

	/* irqcount is used to check if a CPU is already on an interrupt

	   stack or not. While this is essentially redundant with preempt_count

	   it is a little cheaper to use a separate counter in the PDA

	   (short of moving irq_enter into assembly, which would be too

	    much work) */

1:	incl	%gs:pda_irqcount

	cmoveq %gs:pda_irqstackptr,%rsp

	push    %rbp			# backlink for old unwinder

	/*