Re: [PATCHv8 02/34] lib/vdso: make do_hres and do_coarse as __always_inline

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Vincenzo Frascino <vincenzo.frascino@xxxxxxx> writes:
> On 11/12/19 1:26 AM, Dmitry Safonov wrote:
>> +» » vd·=·&vd[CS_HRES_COARSE];
>> +out_hres:
>> +» » return·do_hres(vd,·clock,·ts);
>> » }·else·if·(msk·&·VDSO_COARSE)·{
>> » » do_coarse(&vd[CS_HRES_COARSE],·clock,·ts);
>> » » return·0;
>> » }·else·if·(msk·&·VDSO_RAW)·{
>> -» » return·do_hres(&vd[CS_RAW],·clock,·ts);
>> +» » vd·=·&vd[CS_RAW];
>> +» » /*·goto·allows·to·avoid·extra·inlining·of·do_hres.·*/
>> +» » goto·out_hres;
>
> What is the performance impact of "goto out_hres"?

On x86 it's invisible at least in my limited testing.

Thanks,

        tglx



[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux