Re: [PATCH resend] cpumask: don't perform while loop in cpumask_next_and()

From: Sergey Senozhatsky
Date: Mon Jun 15 2015 - 10:34:45 EST


On (06/15/15 15:40), Borislav Petkov wrote:
[..]
>
> That's some fat stack with 8K CPUs:
>
> cpumask_next_and:
> pushq %rbp #
> movq %rsp, %rbp #,
> pushq %rbx #
> movl %edi, %ebx # n, n
> leaq -1040(%rbp), %rdi #, tmp106
> subq $1032, %rsp #,
> ^^^^^
>
> Lovely.
>

Oh, wow, 8K cpus...

No excuse.

-ss
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/