From owner-svn-src-head@freebsd.org Tue Nov 10 18:10:51 2020 Return-Path: Delivered-To: svn-src-head@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 66B59460B53; Tue, 10 Nov 2020 18:10:51 +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 4CVws72Wq4z4jWq; Tue, 10 Nov 2020 18:10:51 +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 4892427074; Tue, 10 Nov 2020 18:10:51 +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 0AAIApSx017212; Tue, 10 Nov 2020 18:10:51 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0AAIApms017211; Tue, 10 Nov 2020 18:10:51 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <202011101810.0AAIApms017211@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Tue, 10 Nov 2020 18:10:51 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r367572 - head/sys/kern X-SVN-Group: head X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: head/sys/kern X-SVN-Commit-Revision: 367572 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.34 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: Tue, 10 Nov 2020 18:10:51 -0000 Author: mjg Date: Tue Nov 10 18:10:50 2020 New Revision: 367572 URL: https://svnweb.freebsd.org/changeset/base/367572 Log: Allow rtprio_thread to operate on threads of any process This in particular unbreaks rtkit. The limitation was a leftover of previous state, to quote a comment: /* * Though lwpid is unique, only current process is supported * since there is no efficient way to look up a LWP yet. */ Long since then a global tid hash was introduced to remedy the problem. Permission checks still apply. Submitted by: greg_unrelenting.technology (Greg V) Differential Revision: https://reviews.freebsd.org/D27158 Modified: head/sys/kern/kern_resource.c Modified: head/sys/kern/kern_resource.c ============================================================================== --- head/sys/kern/kern_resource.c Tue Nov 10 18:07:13 2020 (r367571) +++ head/sys/kern/kern_resource.c Tue Nov 10 18:10:50 2020 (r367572) @@ -315,8 +315,7 @@ sys_rtprio_thread(struct thread *td, struct rtprio_thr td1 = td; PROC_LOCK(p); } else { - /* Only look up thread in current process */ - td1 = tdfind(uap->lwpid, curproc->p_pid); + td1 = tdfind(uap->lwpid, -1); if (td1 == NULL) return (ESRCH); p = td1->td_proc;