From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 866BDC4332F for ; Mon, 21 Feb 2022 23:18:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236263AbiBUXSi (ORCPT ); Mon, 21 Feb 2022 18:18:38 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:33480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236370AbiBUXSZ (ORCPT ); Mon, 21 Feb 2022 18:18:25 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D76F124F16; Mon, 21 Feb 2022 15:17:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645485476; x=1677021476; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mmcVCbEg/LT9UwII2j+BYuiQo6K4SH6OPf0Nj6nyyHk=; b=dJy8ppYBHg4tNF/k+o/hbmdmt/Z9aEPxbIWAVfHVtsNt0+GLHbwpQnfb GN5TWIxVlwDOj3AUBu5McN1biHEYl4MPoQ7/Uj1s/o786NSXj4+wu/PYn W2+iR1Q3R60NjIoxHy0AufdV8SSWO0G2nzcSKC1ivbj2iNRzX7DM3xa9X DIfNzUnB3yp/H9u+FzmeJEY9PQy9MCwbOEvn6hBRqZQmI/ATxMIWHPaCo vCIcMat5qRURG+ccAzERSu7xA+nkIXCZY60oWRWTLttzl+K3vb4DiCAz9 4F4fQH2z6osrrZ/eMh2vYkOHip9/SB/5QUN43JucdBprS+x4TPz67D2Pi Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10265"; a="251530413" X-IronPort-AV: E=Sophos;i="5.88,386,1635231600"; d="scan'208";a="251530413" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2022 15:17:56 -0800 X-IronPort-AV: E=Sophos;i="5.88,386,1635231600"; d="scan'208";a="638694503" Received: from lab-ah.igk.intel.com ([10.91.215.196]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2022 15:17:53 -0800 From: Andrzej Hajda To: linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, netdev Cc: Andrzej Hajda , Jani Nikula , Daniel Vetter , Lucas De Marchi , Chris Wilson , Eric Dumazet , Dmitry Vyukov , Jakub Kicinski Subject: [PATCH v2 5/9] lib/ref_tracker: improve allocation flags Date: Tue, 22 Feb 2022 00:16:54 +0100 Message-Id: <20220221231705.1481059-13-andrzej.hajda@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220221231705.1481059-1-andrzej.hajda@intel.com> References: <20220221231705.1481059-1-andrzej.hajda@intel.com> MIME-Version: 1.0 Organization: Intel Technology Poland sp. z o.o. - ul. Slowackiego 173, 80-298 Gdansk - KRS 101882 - NIP 957-07-52-316 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Library can be called in non-sleeping context, so it should not use __GFP_NOFAIL. Instead it should calmly handle allocation fails, for this __GFP_NOWARN has been added as well. Signed-off-by: Andrzej Hajda --- lib/ref_tracker.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index 7b00bca300043..c8441ffbb058a 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -59,7 +59,7 @@ __ref_tracker_dir_pr_ostream(struct ref_tracker_dir *dir, if (list_empty(&dir->list)) return; - sbuf = kmalloc(STACK_BUF_SIZE, GFP_NOWAIT); + sbuf = kmalloc(STACK_BUF_SIZE, GFP_NOWAIT | __GFP_NOWARN); list_for_each_entry(tracker, &dir->list, head) ++total; @@ -154,11 +154,11 @@ int ref_tracker_alloc(struct ref_tracker_dir *dir, unsigned long entries[REF_TRACKER_STACK_ENTRIES]; struct ref_tracker *tracker; unsigned int nr_entries; - gfp_t gfp_mask = gfp; + gfp_t gfp_mask; unsigned long flags; - if (gfp & __GFP_DIRECT_RECLAIM) - gfp_mask |= __GFP_NOFAIL; + gfp |= __GFP_NOWARN; + gfp_mask = (gfp & __GFP_DIRECT_RECLAIM) ? (gfp | __GFP_NOFAIL) : gfp; *trackerp = tracker = kzalloc(sizeof(*tracker), gfp_mask); if (unlikely(!tracker)) { pr_err_once("memory allocation failure, unreliable refcount tracker.\n"); @@ -191,7 +191,8 @@ int ref_tracker_free(struct ref_tracker_dir *dir, } nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 1); nr_entries = filter_irq_stacks(entries, nr_entries); - stack_handle = stack_depot_save(entries, nr_entries, GFP_ATOMIC); + stack_handle = stack_depot_save(entries, nr_entries, + GFP_NOWAIT | __GFP_NOWARN); spin_lock_irqsave(&dir->lock, flags); if (tracker->dead) { -- 2.25.1