From owner-dev-commits-src-all@freebsd.org Fri Sep 24 13:32:10 2021 Return-Path: Delivered-To: dev-commits-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 5D80266DE64; Fri, 24 Sep 2021 13:32:10 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HGCcp1Nysz4qs9; Fri, 24 Sep 2021 13:32:10 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 051A0176F4; Fri, 24 Sep 2021 13:32:10 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 18ODW9u5087006; Fri, 24 Sep 2021 13:32:09 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 18ODW9eX087005; Fri, 24 Sep 2021 13:32:09 GMT (envelope-from git) Date: Fri, 24 Sep 2021 13:32:09 GMT Message-Id: <202109241332.18ODW9eX087005@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mark Johnston Subject: git: e68465ecbf73 - stable/13 - uma: Show the count of free slabs in each per-domain keg's sysctl tree MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: e68465ecbf7371efdab5a7d91838e33f4e5e177b Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Sep 2021 13:32:10 -0000 The branch stable/13 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=e68465ecbf7371efdab5a7d91838e33f4e5e177b commit e68465ecbf7371efdab5a7d91838e33f4e5e177b Author: Mark Johnston AuthorDate: 2021-09-17 16:13:47 +0000 Commit: Mark Johnston CommitDate: 2021-09-24 13:01:22 +0000 uma: Show the count of free slabs in each per-domain keg's sysctl tree This is useful for measuring the number of pages that could be freed from a NOFREE zone under memory pressure. Sponsored by: The FreeBSD Foundation (cherry picked from commit d6e77cda9be1509ea170142cca3ff0d3b9f12e35) --- sys/vm/uma_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c index 410d5bb6772b..5dfcd0c860e9 100644 --- a/sys/vm/uma_core.c +++ b/sys/vm/uma_core.c @@ -2526,7 +2526,10 @@ zone_alloc_sysctl(uma_zone_t zone, void *unused) "Total pages currently allocated from VM"); SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, "free_items", CTLFLAG_RD, &dom->ud_free_items, 0, - "items free in the slab layer"); + "Items free in the slab layer"); + SYSCTL_ADD_U32(NULL, SYSCTL_CHILDREN(oid), OID_AUTO, + "free_slabs", CTLFLAG_RD, &dom->ud_free_slabs, 0, + "Unused slabs"); } } else SYSCTL_ADD_CONST_STRING(NULL, SYSCTL_CHILDREN(oid), OID_AUTO,