On Mon, Mar 30, 2015 at 11:09 AM, Denys Vlasenko <[email protected]> wrote:
> - cmpl $0,PER_CPU_VAR(__preempt_count)
> - jnz 1f
> - bt $9,EFLAGS(%rsp) /* interrupts were off? */
> + bt $X86_EFLAGS_IF_BIT,EFLAGS(%rsp) /* interrupts were off? */
Since you're changing this anyway, just change it to use "testb" the
way you did the other place.
Yeah, yeah, it might make it less readable, but
testb $2,EFLAGS+1(%rsp) /* interrupts were off? */
should be smaller and faster than "bt", and the point of this commit
was to make code smaller and faster, no?
Linus
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