From patchwork Wed Sep 22 14:57:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Brost X-Patchwork-Id: 12510833 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 B5085C433EF for ; Wed, 22 Sep 2021 15:02:45 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5E63A61107 for ; Wed, 22 Sep 2021 15:02:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5E63A61107 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D41526EB24; Wed, 22 Sep 2021 15:02:44 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 510466EB24; Wed, 22 Sep 2021 15:02:43 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10114"; a="223657882" X-IronPort-AV: E=Sophos;i="5.85,314,1624345200"; d="scan'208";a="223657882" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2021 08:02:42 -0700 X-IronPort-AV: E=Sophos;i="5.85,314,1624345200"; d="scan'208";a="702286266" Received: from jons-linux-dev-box.fm.intel.com ([10.1.27.20]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2021 08:02:42 -0700 From: Matthew Brost To: , Cc: , , Date: Wed, 22 Sep 2021 07:57:39 -0700 Message-Id: <20210922145739.17133-1-matthew.brost@intel.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915: Drop stealing of bits from i915_sw_fence function pointer 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Rather than stealing bits from i915_sw_fence function pointer use seperate fields for function pointer and flags. If using two different fields, the 4 byte alignment for the i915_sw_fence function pointer can also be dropped. v2: (CI) - Set new function field rather than flags in __i915_sw_fence_init Signed-off-by: Matthew Brost --- drivers/gpu/drm/i915/display/intel_display.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/i915_request.c | 4 ++-- drivers/gpu/drm/i915/i915_sw_fence.c | 12 +++++------ drivers/gpu/drm/i915/i915_sw_fence.h | 21 +++++++++---------- drivers/gpu/drm/i915/i915_sw_fence_work.c | 2 +- .../gpu/drm/i915/selftests/i915_sw_fence.c | 2 +- drivers/gpu/drm/i915/selftests/lib_sw_fence.c | 4 ++-- 8 files changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index a7ca38613f89..6d5bb55ffc82 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -10323,7 +10323,7 @@ static void intel_atomic_commit_work(struct work_struct *work) intel_atomic_commit_tail(state); } -static int __i915_sw_fence_call +static int intel_atomic_commit_ready(struct i915_sw_fence *fence, enum i915_sw_fence_notify notify) { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index c2ab0e22db0a..df5fec5c3da8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -800,7 +800,7 @@ static void free_engines_rcu(struct rcu_head *rcu) free_engines(engines); } -static int __i915_sw_fence_call +static int engines_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { struct i915_gem_engines *engines = diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index ce446716d092..945d3025a0b6 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -719,7 +719,7 @@ void i915_request_cancel(struct i915_request *rq, int error) intel_context_cancel_request(rq->context, rq); } -static int __i915_sw_fence_call +static int submit_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { struct i915_request *request = @@ -755,7 +755,7 @@ submit_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) return NOTIFY_DONE; } -static int __i915_sw_fence_call +static int semaphore_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { struct i915_request *rq = container_of(fence, typeof(*rq), semaphore); diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c index c589a681da77..1c080dd1f718 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/i915_sw_fence.c @@ -34,7 +34,7 @@ enum { static void *i915_sw_fence_debug_hint(void *addr) { - return (void *)(((struct i915_sw_fence *)addr)->flags & I915_SW_FENCE_MASK); + return (void *)(((struct i915_sw_fence *)addr)->fn); } #ifdef CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS @@ -126,10 +126,7 @@ static inline void debug_fence_assert(struct i915_sw_fence *fence) static int __i915_sw_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { - i915_sw_fence_notify_t fn; - - fn = (i915_sw_fence_notify_t)(fence->flags & I915_SW_FENCE_MASK); - return fn(fence, state); + return fence->fn(fence, state); } #ifdef CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS @@ -242,10 +239,11 @@ void __i915_sw_fence_init(struct i915_sw_fence *fence, const char *name, struct lock_class_key *key) { - BUG_ON(!fn || (unsigned long)fn & ~I915_SW_FENCE_MASK); + BUG_ON(!fn); __init_waitqueue_head(&fence->wait, name, key); - fence->flags = (unsigned long)fn; + fence->fn = fn; + fence->flags = 0; i915_sw_fence_reinit(fence); } diff --git a/drivers/gpu/drm/i915/i915_sw_fence.h b/drivers/gpu/drm/i915/i915_sw_fence.h index 30a863353ee6..70ba1789aa89 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.h +++ b/drivers/gpu/drm/i915/i915_sw_fence.h @@ -17,26 +17,25 @@ struct completion; struct dma_resv; +struct i915_sw_fence; + +enum i915_sw_fence_notify { + FENCE_COMPLETE, + FENCE_FREE +}; + +typedef int (*i915_sw_fence_notify_t)(struct i915_sw_fence *, + enum i915_sw_fence_notify state); struct i915_sw_fence { wait_queue_head_t wait; + i915_sw_fence_notify_t fn; unsigned long flags; atomic_t pending; int error; }; #define I915_SW_FENCE_CHECKED_BIT 0 /* used internally for DAG checking */ -#define I915_SW_FENCE_PRIVATE_BIT 1 /* available for use by owner */ -#define I915_SW_FENCE_MASK (~3) - -enum i915_sw_fence_notify { - FENCE_COMPLETE, - FENCE_FREE -}; - -typedef int (*i915_sw_fence_notify_t)(struct i915_sw_fence *, - enum i915_sw_fence_notify state); -#define __i915_sw_fence_call __aligned(4) void __i915_sw_fence_init(struct i915_sw_fence *fence, i915_sw_fence_notify_t fn, diff --git a/drivers/gpu/drm/i915/i915_sw_fence_work.c b/drivers/gpu/drm/i915/i915_sw_fence_work.c index 5b33ef23d54c..d2e56b387993 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence_work.c +++ b/drivers/gpu/drm/i915/i915_sw_fence_work.c @@ -23,7 +23,7 @@ static void fence_work(struct work_struct *work) dma_fence_put(&f->dma); } -static int __i915_sw_fence_call +static int fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { struct dma_fence_work *f = container_of(fence, typeof(*f), chain); diff --git a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c index cbf45d85cbff..daa985e5a19b 100644 --- a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c @@ -28,7 +28,7 @@ #include "../i915_selftest.h" -static int __i915_sw_fence_call +static int fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { switch (state) { diff --git a/drivers/gpu/drm/i915/selftests/lib_sw_fence.c b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c index 080b90b63d16..eb59a41bdb79 100644 --- a/drivers/gpu/drm/i915/selftests/lib_sw_fence.c +++ b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c @@ -26,7 +26,7 @@ /* Small library of different fence types useful for writing tests */ -static int __i915_sw_fence_call +static int nop_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { return NOTIFY_DONE; @@ -89,7 +89,7 @@ struct heap_fence { }; }; -static int __i915_sw_fence_call +static int heap_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { struct heap_fence *h = container_of(fence, typeof(*h), fence);