From owner-svn-src-all@freebsd.org Sat Jul 25 00:03:24 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A19A33781CD; Sat, 25 Jul 2020 00:03:24 +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 TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BD5rD3mcFz4S44; Sat, 25 Jul 2020 00:03:24 +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 65CAF12BFC; Sat, 25 Jul 2020 00:03:24 +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 06P03OO9041167; Sat, 25 Jul 2020 00:03:24 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 06P03OuB041166; Sat, 25 Jul 2020 00:03:24 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <202007250003.06P03OuB041166@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Sat, 25 Jul 2020 00:03:24 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r363504 - stable/12/sys/kern X-SVN-Group: stable-12 X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: stable/12/sys/kern X-SVN-Commit-Revision: 363504 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Jul 2020 00:03:24 -0000 Author: mjg Date: Sat Jul 25 00:03:23 2020 New Revision: 363504 URL: https://svnweb.freebsd.org/changeset/base/363504 Log: MFC r363297: Short-circuit tdfind when looking for the calling thread. Modified: stable/12/sys/kern/kern_thread.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/kern/kern_thread.c ============================================================================== --- stable/12/sys/kern/kern_thread.c Sat Jul 25 00:01:57 2020 (r363503) +++ stable/12/sys/kern/kern_thread.c Sat Jul 25 00:03:23 2020 (r363504) @@ -1260,6 +1260,14 @@ tdfind(lwpid_t tid, pid_t pid) struct thread *td; int run = 0; + td = curthread; + if (td->td_tid == tid) { + if (pid != -1 && td->td_proc->p_pid != pid) + return (NULL); + PROC_LOCK(td->td_proc); + return (td); + } + rw_rlock(&tidhash_lock); LIST_FOREACH(td, TIDHASH(tid), td_hash) { if (td->td_tid == tid) {