From patchwork Wed Nov 23 14:48:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13053766 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FB61C4332F for ; Wed, 23 Nov 2022 14:49:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D738C10E563; Wed, 23 Nov 2022 14:49:23 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0E7B210E563; Wed, 23 Nov 2022 14:49:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1669214952; x=1700750952; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=6CaDzmwprgLasCtAjji0nqGgQ6qOSWdVD2cInwSVDOE=; b=FhJVYZ+DvjYzeIglX5D4Sr/9mZO55HRkrOp0LAVrbT9sgB9P4zSKCrzV jIFUUI4Ld5U6tZDt80zAEsi8h9yj080IsUmNm79WQcxdZttHJdhMV1FOb 1b2ab7XCZF347PZWtYR/NJ6vvGyNPYcxl3+N4A39IZsINtUM1/Z36TwiB 50oq3E+ybMSU7ma/r35i44d50MWOj3nbR56uOe6hUvTO5SDjxwn6KwoRv sm1V40GAmzd69SZkbuvL3hnkxSRPGw+QKpC4OFmqgPuAfyVjtxWl7eRnW QUO50IgcR2CGbhulGKGMslHtDzH+mbSoV3BWeqLV8KI8LPgTPzFq9f/34 A==; X-IronPort-AV: E=McAfee;i="6500,9779,10540"; a="376225213" X-IronPort-AV: E=Sophos;i="5.96,187,1665471600"; d="scan'208";a="376225213" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Nov 2022 06:48:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10540"; a="635936973" X-IronPort-AV: E=Sophos;i="5.96,187,1665471600"; d="scan'208";a="635936973" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga007.jf.intel.com with ESMTP; 23 Nov 2022 06:48:37 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 80918128; Wed, 23 Nov 2022 16:49:03 +0200 (EET) From: Andy Shevchenko To: Jakob Koschel , Andy Shevchenko , Greg Kroah-Hartman , Mathias Nyman , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Date: Wed, 23 Nov 2022 16:48:58 +0200 Message-Id: <20221123144901.40493-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 1/4] i915: Move list_count() to list.h for broader use X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Cernekee , Mathias Nyman , Jani Nikula , Hans de Goede , Daniel Vetter , Rodrigo Vivi , David Airlie Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Some of the existing users, and definitely will be new ones, want to count existing nodes in the list. Provide a generic API for that by moving code from i915 to list.h. Signed-off-by: Andy Shevchenko Acked-by: Jani Nikula Reviewed-by: Lucas De Marchi --- v4: fixed prototype when converting to static inline v3: added tag (Jani), changed to be static inline (Mike) v2: dropped the duplicate code in i915 (LKP) drivers/gpu/drm/i915/gt/intel_engine_cs.c | 13 +------------ include/linux/list.h | 15 +++++++++++++++ 2 files changed, 16 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index c33e0d72d670..b96c8217743c 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -2094,17 +2094,6 @@ static void print_request_ring(struct drm_printer *m, struct i915_request *rq) } } -static unsigned long list_count(struct list_head *list) -{ - struct list_head *pos; - unsigned long count = 0; - - list_for_each(pos, list) - count++; - - return count; -} - static unsigned long read_ul(void *p, size_t x) { return *(unsigned long *)(p + x); @@ -2279,7 +2268,7 @@ void intel_engine_dump(struct intel_engine_cs *engine, spin_lock_irqsave(&engine->sched_engine->lock, flags); engine_dump_active_requests(engine, m); - drm_printf(m, "\tOn hold?: %lu\n", + drm_printf(m, "\tOn hold?: %zu\n", list_count(&engine->sched_engine->hold)); spin_unlock_irqrestore(&engine->sched_engine->lock, flags); diff --git a/include/linux/list.h b/include/linux/list.h index 61762054b4be..632a298c7018 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -655,6 +655,21 @@ static inline void list_splice_tail_init(struct list_head *list, !list_is_head(pos, (head)); \ pos = n, n = pos->prev) +/** + * list_count - count nodes in the list + * @head: the head for your list. + */ +static inline size_t list_count(struct list_head *head) +{ + struct list_head *pos; + size_t count = 0; + + list_for_each(pos, head) + count++; + + return count; +} + /** * list_entry_is_head - test if the entry points to the head of the list * @pos: the type * to cursor