Re: [PATCHv8 02/34] lib/vdso: make do_hres and do_coarse as __always_inline
From: Vincenzo Frascino <hidden>
Date: 2020-01-10 09:43:03
Also in:
lkml
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"? -- Regards, Vincenzo