From nobody Tue May 31 08:59:34 2022 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4E1DE1B5713E; Tue, 31 May 2022 08:59:35 +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 4LC5nM1hRqz4ksD; Tue, 31 May 2022 08:59:35 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1653987575; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=+3YEBiJAkBBqjPVVXEmyle8yVCjgbvppvWBzle+53UA=; b=iqu1MVycPJO47hJpsVDm0tUskHCC1xyRZYiykcQ0FmXuJ9n/UecASTgfED2DrdR5WUkSJ6 jWjHtryb7G86mL5T3p+iLMhhQrS5BYG1lRz1N7PLnYyTu0aZPSOyioJljlcMjiyOqpGAVX U+5Gzj7lwvIjpC3bQrPzv19muPlHJOJe6nWmUhP4l1kwWiFC06s3r/41Mo1aLtuHnkuz4g 9/HUQNWVUhvqGaoxUnm+w0lYNls3iV1YjA1yPpqo/rNXClKy4vPD4DiRjDoEMiQ4YEhcwI omes2Gh/S4DIRDcGCanDuVRxBT0DVXMboYBWij0KShIJPv+vV5T3ISswonKx6w== 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 15FC3753; Tue, 31 May 2022 08:59:35 +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 24V8xYkg047900; Tue, 31 May 2022 08:59:34 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 24V8xYDV047899; Tue, 31 May 2022 08:59:34 GMT (envelope-from git) Date: Tue, 31 May 2022 08:59:34 GMT Message-Id: <202205310859.24V8xYDV047899@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Dmitry Chagin Subject: git: 7e2a45111937 - main - linprocfs: Add /proc/vm/max_map_count List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: dchagin X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 7e2a451119373b7d3f2b3fd062d4ccb099dde022 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1653987575; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=+3YEBiJAkBBqjPVVXEmyle8yVCjgbvppvWBzle+53UA=; b=wHfbdt+sh/fvq9WgjiP9YNJefrve34T9TX1SUkiOa6jGb4xB9laP7M4hHjXztvWO2lCQT0 aFo1vetA2211kDmmpT8+AmlZuWWAZY0E791jQaF39t8CeWTGsMnAKvrFrFdXl3m9TDVkl5 yhW+gFR9TT1gcvFtbRU7M2B3l3RRuK5YwED9TTAcU4rgxtVDiaKnSiyEc7BEuzxgLsy5eK 5v6AWIjATY7zVXxMVl9qX46lEMg8uSCYqqXC1XjzrDhzxqvxoOfELTb6WVL6tU1RJZsIWc UC5BnZ29fKYQuICIIfrzFVP+BsPHsP0NwuBek+chSmI/JUMWXXq5/lCsgPp97w== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1653987575; a=rsa-sha256; cv=none; b=mqpO/gvi2bgQ0k0RFG9AJhQBAwCDrthslSU3eqZI1UUC2MOg7DyUsHqQs8xX1XYibOc0r+ QvcOBBzeAVcFqjMAl/iJoUAMdn7b72VaoqK6Ivxo97TQOULBAzqVi26rj3r/QM8E05UPPW toLkp8pER6eKyOGJ9eF/uDJnIaQRAkrdmr1VZHd+PYwLtvZJbVPMCZLZn06j5XaIidee+K Zu2Z5RPZd62M6UBq6Ym8qehoYw7Z3oZ1ig5FhmTzPb6iY0L1+8qS89wbMW45Nb71ffdUDX Y5xLgdMu0javcOSzJMOwkNvoYrMXn84X73QI+NfoZtxi16/XF//b/T0GNLsnYQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by dchagin: URL: https://cgit.FreeBSD.org/src/commit/?id=7e2a451119373b7d3f2b3fd062d4ccb099dde022 commit 7e2a451119373b7d3f2b3fd062d4ccb099dde022 Author: Dmitry Chagin AuthorDate: 2022-05-31 08:42:06 +0000 Commit: Dmitry Chagin CommitDate: 2022-05-31 08:42:06 +0000 linprocfs: Add /proc/vm/max_map_count On Linux this limits the number of maps per mm struct. We don't limit mappings, return a suitable large value. Reviewed by: emaste Differential revision: https://reviews.freebsd.org/D35351 MFC after: 2 weeks --- sys/compat/linprocfs/linprocfs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c index f930c1d71987..62fa797ae875 100644 --- a/sys/compat/linprocfs/linprocfs.c +++ b/sys/compat/linprocfs/linprocfs.c @@ -1978,6 +1978,21 @@ linprocfs_do_oom_score_adj(PFS_FILL_ARGS) return (0); } +/* + * Filler function for proc/sys/vm/max_map_count + * + * Maximum number of active map areas, on Linux this limits the number + * of vmaps per mm struct. We don't limit mappings, return a suitable + * large value. + */ +static int +linprocfs_domax_map_cnt(PFS_FILL_ARGS) +{ + + sbuf_printf(sb, "%d\n", INT32_MAX); + return (0); +} + /* * Constructor */ @@ -2122,6 +2137,8 @@ linprocfs_init(PFS_INIT_ARGS) dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0); pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree, NULL, NULL, NULL, PFS_RD); + pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt, + NULL, NULL, NULL, PFS_RD); return (0); }