From owner-svn-src-head@freebsd.org Thu Nov 29 04:48:23 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 771A0114EDDC; Thu, 29 Nov 2018 04:48:23 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1878372C1A; Thu, 29 Nov 2018 04:48:23 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id EA15314B4A; Thu, 29 Nov 2018 04:48:22 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wAT4mMxM063451; Thu, 29 Nov 2018 04:48:22 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wAT4mMIe063450; Thu, 29 Nov 2018 04:48:22 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <201811290448.wAT4mMIe063450@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Thu, 29 Nov 2018 04:48:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341180 - head/sys/kern X-SVN-Group: head X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: head/sys/kern X-SVN-Commit-Revision: 341180 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 1878372C1A X-Spamd-Result: default: False [1.19 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_SPAM_SHORT(0.48)[0.478,0]; NEURAL_SPAM_MEDIUM(0.25)[0.247,0]; NEURAL_SPAM_LONG(0.47)[0.465,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Nov 2018 04:48:23 -0000 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) {