From owner-svn-src-all@freebsd.org Tue Dec 18 07:11:13 2018 Return-Path: Delivered-To: svn-src-all@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 2111F134359B; Tue, 18 Dec 2018 07:11:13 +0000 (UTC) (envelope-from kib@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) server-signature RSA-PSS (4096 bits) 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 B7303836EC; Tue, 18 Dec 2018 07:11:12 +0000 (UTC) (envelope-from kib@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 ABBF523610; Tue, 18 Dec 2018 07:11:12 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wBI7BCJJ023887; Tue, 18 Dec 2018 07:11:12 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wBI7BCar023885; Tue, 18 Dec 2018 07:11:12 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201812180711.wBI7BCar023885@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Tue, 18 Dec 2018 07:11:12 +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: r342187 - in stable/12/sys: kern x86/x86 X-SVN-Group: stable-12 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: in stable/12/sys: kern x86/x86 X-SVN-Commit-Revision: 342187 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: B7303836EC X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.91 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_SHORT(-0.91)[-0.914,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.996,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 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: Tue, 18 Dec 2018 07:11:13 -0000 Author: kib Date: Tue Dec 18 07:11:12 2018 New Revision: 342187 URL: https://svnweb.freebsd.org/changeset/base/342187 Log: MFC r341810: Free bootstacks after AP startup. Modified: stable/12/sys/kern/kern_thread.c stable/12/sys/x86/x86/mp_x86.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/kern/kern_thread.c ============================================================================== --- stable/12/sys/kern/kern_thread.c Tue Dec 18 06:09:12 2018 (r342186) +++ stable/12/sys/kern/kern_thread.c Tue Dec 18 07:11:12 2018 (r342187) @@ -196,7 +196,7 @@ thread_ctor(void *mem, int size, void *arg, int flags) td = (struct thread *)mem; td->td_state = TDS_INACTIVE; - td->td_oncpu = NOCPU; + td->td_lastcpu = td->td_oncpu = NOCPU; td->td_tid = tid_alloc(); Modified: stable/12/sys/x86/x86/mp_x86.c ============================================================================== --- stable/12/sys/x86/x86/mp_x86.c Tue Dec 18 06:09:12 2018 (r342186) +++ stable/12/sys/x86/x86/mp_x86.c Tue Dec 18 07:11:12 2018 (r342187) @@ -1071,9 +1071,23 @@ init_secondary_tail(void) /* NOTREACHED */ } -/******************************************************************* - * local functions and data - */ +static void +smp_after_idle_runnable(void *arg __unused) +{ + struct thread *idle_td; + int cpu; + + for (cpu = 1; cpu < mp_ncpus; cpu++) { + idle_td = pcpu_find(cpu)->pc_idlethread; + while (idle_td->td_lastcpu == NOCPU && + idle_td->td_oncpu == NOCPU) + cpu_spinwait(); + kmem_free((vm_offset_t)bootstacks[cpu], kstack_pages * + PAGE_SIZE); + } +} +SYSINIT(smp_after_idle_runnable, SI_SUB_SMP, SI_ORDER_ANY, + smp_after_idle_runnable, NULL); /* * We tell the I/O APIC code about all the CPUs we want to receive