From patchwork Mon Nov 14 16:22:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13042537 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 32B2BC43219 for ; Mon, 14 Nov 2022 16:22:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236706AbiKNQV7 (ORCPT ); Mon, 14 Nov 2022 11:21:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236816AbiKNQVw (ORCPT ); Mon, 14 Nov 2022 11:21:52 -0500 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 000F81A07C; Mon, 14 Nov 2022 08:21:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668442911; x=1699978911; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=42wLHufKcTQDWt2yx4w3/+GC/vlLxKREtDgJtLik068=; b=RRrSCX3BxyhmGxkI+3rOJyzSQh/uFeuYNCYH4vr7y1GCA/bIBHPZRDqX Ozv/JsZTdCnWYVCPLNnaxMEsAkp9RWNf/bAycnrSUoLCpJVV1Xhfq5yFq 9J60bz8NH/dRZ2/Fdn29Qv+lrnQPYZ9U7HEvYxcrjo1sQI5j4CbiJYuxA Y9QDHqR6VkbXvL+0/L7aLPMbdOYLdl9aj0Bwk92h/h66rZgbR9x5GAJWF Y1OlITDcetj2RPOXFX7J65e4pWkks0yVMCfmBHMUVnrpdDqrMD6IIX2OA hehzXWmU7ycnXmJRsc5ouZTJ5GtZTQCfa/FQ1SFyKHvqSyUGXatBG6qH6 g==; X-IronPort-AV: E=McAfee;i="6500,9779,10531"; a="398302929" X-IronPort-AV: E=Sophos;i="5.96,164,1665471600"; d="scan'208";a="398302929" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Nov 2022 08:21:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10531"; a="616372365" X-IronPort-AV: E=Sophos;i="5.96,164,1665471600"; d="scan'208";a="616372365" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 14 Nov 2022 08:21:46 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id A79732F3; Mon, 14 Nov 2022 18:22:10 +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 Cc: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter , Kevin Cernekee , Mathias Nyman , Andrew Morton Subject: [PATCH v2 1/4] i915: Move list_count() to list.h for broader use Date: Mon, 14 Nov 2022 18:22:04 +0200 Message-Id: <20221114162207.62559-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org 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 --- v2: dropped the duplicate code in i915 (LKP) drivers/gpu/drm/i915/gt/intel_engine_cs.c | 13 +------------ include/linux/list.h | 13 +++++++++++++ 2 files changed, 14 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 6ae8b07cfaa1..b5d474be564d 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -2085,17 +2085,6 @@ 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); @@ -2270,7 +2259,7 @@ 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..098eccf8c1b6 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -655,6 +655,19 @@ 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. + */ +#define list_count(head) \ +({ \ + struct list_head *__tmp; \ + size_t __i = 0; \ + list_for_each(__tmp, head) \ + __i++; \ + __i; \ +}) + /** * list_entry_is_head - test if the entry points to the head of the list * @pos: the type * to cursor