Author: attilio Date: Tue Jan 7 14:03:42 2014 New Revision: 260393 URL: http://svnweb.freebsd.org/changeset/base/260393
Log: Use __predict_false() on sensitive lock paths as most of the times, when PMC-soft feature is not used the check will be false. Sponsored by: EMC / Isilon storage division Submitted by: Anton Rang <anton.r...@isilon.com> Modified: head/sys/sys/pmckern.h Modified: head/sys/sys/pmckern.h ============================================================================== --- head/sys/sys/pmckern.h Tue Jan 7 13:09:35 2014 (r260392) +++ head/sys/sys/pmckern.h Tue Jan 7 14:03:42 2014 (r260393) @@ -110,7 +110,7 @@ struct pmckern_soft { #ifdef PMC_FAKE_TRAPFRAME #define PMC_SOFT_CALL(pr, mo, fu, na) \ do { \ - if (pmc_##pr##_##mo##_##fu##_##na.ps_running) { \ + if (__predict_false(pmc_##pr##_##mo##_##fu##_##na.ps_running)) { \ struct pmckern_soft ks; \ register_t intr; \ intr = intr_disable(); \ @@ -135,7 +135,7 @@ do { \ */ #define PMC_SOFT_CALL_TF(pr, mo, fu, na, tf) \ do { \ - if (pmc_##pr##_##mo##_##fu##_##na.ps_running) { \ + if (__predict_false(pmc_##pr##_##mo##_##fu##_##na.ps_running)) { \ struct pmckern_soft ks; \ register_t intr; \ intr = intr_disable(); \ _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"