Date: Thu, 29 Nov 2018 04:48:22 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341180 - head/sys/kern Message-ID: <201811290448.wAT4mMIe063450@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: mjg Date: Thu Nov 29 04:48:22 2018 New Revision: 341180 URL: https://svnweb.freebsd.org/changeset/base/341180 Log: Annotate td_cowgen check as unlikely. Sponsored by: The FreeBSD Foundation Modified: head/sys/kern/subr_syscall.c Modified: head/sys/kern/subr_syscall.c ============================================================================== --- head/sys/kern/subr_syscall.c Thu Nov 29 03:57:06 2018 (r341179) +++ head/sys/kern/subr_syscall.c Thu Nov 29 04:48:22 2018 (r341180) @@ -66,7 +66,7 @@ syscallenter(struct thread *td) sa = &td->td_sa; td->td_pticks = 0; - if (td->td_cowgen != p->p_cowgen) + if (__predict_false(td->td_cowgen != p->p_cowgen)) thread_cow_update(td); traced = (p->p_flag & P_TRACED) != 0; if (traced || td->td_dbgflags & TDB_USERWR) {
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201811290448.wAT4mMIe063450>