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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8108EC10F11 for ; Wed, 10 Apr 2019 11:09:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5BEA02084B for ; Wed, 10 Apr 2019 11:09:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731299AbfDJLJH (ORCPT ); Wed, 10 Apr 2019 07:09:07 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:58834 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730850AbfDJLFw (ORCPT ); Wed, 10 Apr 2019 07:05:52 -0400 Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hEB34-00055n-2m; Wed, 10 Apr 2019 13:05:46 +0200 Message-Id: <20190410103644.945059666@linutronix.de> User-Agent: quilt/0.65 Date: Wed, 10 Apr 2019 12:28:09 +0200 From: Thomas Gleixner To: LKML Cc: Josh Poimboeuf , x86@kernel.org, Andy Lutomirski , Steven Rostedt , Alexander Potapenko , intel-gfx@lists.freedesktop.org, Joonas Lahtinen , Maarten Lankhorst , dri-devel@lists.freedesktop.org, David Airlie , Jani Nikula , Daniel Vetter , Rodrigo Vivi Subject: [RFC patch 15/41] drm: Remove the ULONG_MAX stack trace hackery References: <20190410102754.387743324@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org No architecture terminates the stack trace with ULONG_MAX anymore. Remove the cruft. Signed-off-by: Thomas Gleixner Cc: intel-gfx@lists.freedesktop.org Cc: Joonas Lahtinen Cc: Maarten Lankhorst Cc: dri-devel@lists.freedesktop.org Cc: David Airlie Cc: Jani Nikula Cc: Daniel Vetter Cc: Rodrigo Vivi --- drivers/gpu/drm/drm_mm.c | 3 --- drivers/gpu/drm/i915/intel_runtime_pm.c | 4 ---- 2 files changed, 7 deletions(-) --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -113,9 +113,6 @@ static noinline void save_stack(struct d }; save_stack_trace(&trace); - if (trace.nr_entries != 0 && - trace.entries[trace.nr_entries-1] == ULONG_MAX) - trace.nr_entries--; /* May be called under spinlock, so avoid sleeping */ node->stack = depot_save_stack(&trace, GFP_NOWAIT); --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -67,10 +67,6 @@ static noinline depot_stack_handle_t __s }; save_stack_trace(&trace); - if (trace.nr_entries && - trace.entries[trace.nr_entries - 1] == ULONG_MAX) - trace.nr_entries--; - return depot_save_stack(&trace, GFP_NOWAIT | __GFP_NOWARN); }