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 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 0E239C4332F for ; Fri, 1 Apr 2022 14:28:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2592C10E950; Fri, 1 Apr 2022 14:28:16 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id AD06C10E939; Fri, 1 Apr 2022 14:28:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1648823294; x=1680359294; h=date:from:to:subject:message-id:references:mime-version: in-reply-to; bh=+zJoAIVO6WLqYb6fb3A9aUk8ZrWie8OZpraHgNKa3TM=; b=mSJrKMqSCVi+CASWuCbCDl0aVpMDfd46Qev0BRvLvDmZQC16URgNWqG/ btuF1g2cunXmKSyio5EXgkIwnMc0D2xX1lQMjrx6nB0UEuHGF1JLuR7gG Qk4waWsHLmAGoxrmmP6gjrdOTPjdijmskj2NCc+8Kduai+k8AI+V0T7rY BKDMMOoBS3EB/fsLJn9T/25Xy8cVr5XMxxusLBaiX5lbH2/0zXkzAIfky nK3cseTYZAQAHap9hEDq6V0y5+ZqaElzLcr4MUx0KvB1ppwyb1MrcXaKg G1WxHOOb/TvcnI6f5aVLocmN4EO27OmS+2f81q6HJyIB6rKx3rKNfvVMo g==; X-IronPort-AV: E=McAfee;i="6200,9189,10304"; a="260326964" X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="260326964" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 07:28:14 -0700 X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="522792466" Received: from ramaling-i9x.iind.intel.com (HELO intel.com) ([10.203.144.108]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 07:28:11 -0700 Date: Fri, 1 Apr 2022 19:58:53 +0530 From: Ramalingam C To: intel-gfx , dri-devel , Christian Koenig , rodrigo.vivi@intel.com, Joonas Lahtinen Message-ID: <20220401142853.GF12046@intel.com> References: <20220401123751.27771-1-ramalingam.c@intel.com> <20220401123751.27771-8-ramalingam.c@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220401123751.27771-8-ramalingam.c@intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) Subject: Re: [Intel-gfx] [PATCH v7 7/9] drm/ttm: Add a parameter to add extra pages into ttm_tt 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" Christian, Joonas and vivi Once the premerge results are greeen, if this patch can be merged into drm-intel-gt-next along with other patches could you please ack the request to merge into drm-intel-gt-next? Thanks Ram On 2022-04-01 at 18:07:49 +0530, Ramalingam C wrote: > Add a parameter called "extra_pages" for ttm_tt_init, to indicate that > driver needs extra pages in ttm_tt. > > v2: > Used imperative wording [Thomas and Christian] > > Signed-off-by: Ramalingam C > cc: Christian Koenig > cc: Hellstrom Thomas > Reviewed-by: Thomas Hellstrom > Reviewed-by: Christian Konig > Reviewed-by: Nirmoy Das > --- > drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- > drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +- > drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- > drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- > drivers/gpu/drm/ttm/ttm_tt.c | 12 +++++++----- > drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- > include/drm/ttm/ttm_tt.h | 4 +++- > 7 files changed, 15 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c > index dc7f938bfff2..123045b58fec 100644 > --- a/drivers/gpu/drm/drm_gem_vram_helper.c > +++ b/drivers/gpu/drm/drm_gem_vram_helper.c > @@ -867,7 +867,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, > if (!tt) > return NULL; > > - ret = ttm_tt_init(tt, bo, page_flags, ttm_cached); > + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); > if (ret < 0) > goto err_ttm_tt_init; > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > index c40aca99442f..a878910a563c 100644 > --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > @@ -293,7 +293,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo, > i915_tt->is_shmem = true; > } > > - ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching); > + ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching, 0); > if (ret) > goto err_free; > > diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c > index 95df5750f47f..9ba871bd19b1 100644 > --- a/drivers/gpu/drm/qxl/qxl_ttm.c > +++ b/drivers/gpu/drm/qxl/qxl_ttm.c > @@ -113,7 +113,7 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, > ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); > if (ttm == NULL) > return NULL; > - if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { > + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { > kfree(ttm); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c > index 6ddc16f0fe2b..d27691f2e451 100644 > --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c > +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c > @@ -134,7 +134,7 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo, > agp_be->mem = NULL; > agp_be->bridge = bridge; > > - if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined)) { > + if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) { > kfree(agp_be); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c > index d234aab800a0..1a66d9fc589a 100644 > --- a/drivers/gpu/drm/ttm/ttm_tt.c > +++ b/drivers/gpu/drm/ttm/ttm_tt.c > @@ -134,9 +134,10 @@ void ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) > static void ttm_tt_init_fields(struct ttm_tt *ttm, > struct ttm_buffer_object *bo, > uint32_t page_flags, > - enum ttm_caching caching) > + enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm->num_pages = PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT; > + ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages; > ttm->caching = ttm_cached; > ttm->page_flags = page_flags; > ttm->dma_address = NULL; > @@ -146,9 +147,10 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm, > } > > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching) > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, extra_pages); > > if (ttm_tt_alloc_page_directory(ttm)) { > pr_err("Failed allocating page table\n"); > @@ -180,7 +182,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > { > int ret; > > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, 0); > > if (page_flags & TTM_TT_FLAG_EXTERNAL) > ret = ttm_sg_tt_alloc_page_directory(ttm); > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > index b84ecc6d6611..4e3938e62c08 100644 > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > @@ -517,7 +517,7 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, > ttm_cached); > else > ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags, > - ttm_cached); > + ttm_cached, 0); > if (unlikely(ret != 0)) > goto out_no_init; > > diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h > index f20832139815..17a0310e8aaa 100644 > --- a/include/drm/ttm/ttm_tt.h > +++ b/include/drm/ttm/ttm_tt.h > @@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * @bo: The buffer object we create the ttm for. > * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags. > * @caching: the desired caching state of the pages > + * @extra_pages: Extra pages needed for the driver. > * > * Create a struct ttm_tt to back data with system memory pages. > * No pages are actually allocated. > @@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * NULL: Out of memory. > */ > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching); > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages); > int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, > uint32_t page_flags, enum ttm_caching caching); > > -- > 2.20.1 > 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 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 7ED51C433F5 for ; Fri, 1 Apr 2022 14:28:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D877E10E940; Fri, 1 Apr 2022 14:28:15 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id AD06C10E939; Fri, 1 Apr 2022 14:28:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1648823294; x=1680359294; h=date:from:to:subject:message-id:references:mime-version: in-reply-to; bh=+zJoAIVO6WLqYb6fb3A9aUk8ZrWie8OZpraHgNKa3TM=; b=mSJrKMqSCVi+CASWuCbCDl0aVpMDfd46Qev0BRvLvDmZQC16URgNWqG/ btuF1g2cunXmKSyio5EXgkIwnMc0D2xX1lQMjrx6nB0UEuHGF1JLuR7gG Qk4waWsHLmAGoxrmmP6gjrdOTPjdijmskj2NCc+8Kduai+k8AI+V0T7rY BKDMMOoBS3EB/fsLJn9T/25Xy8cVr5XMxxusLBaiX5lbH2/0zXkzAIfky nK3cseTYZAQAHap9hEDq6V0y5+ZqaElzLcr4MUx0KvB1ppwyb1MrcXaKg G1WxHOOb/TvcnI6f5aVLocmN4EO27OmS+2f81q6HJyIB6rKx3rKNfvVMo g==; X-IronPort-AV: E=McAfee;i="6200,9189,10304"; a="260326964" X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="260326964" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 07:28:14 -0700 X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="522792466" Received: from ramaling-i9x.iind.intel.com (HELO intel.com) ([10.203.144.108]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 07:28:11 -0700 Date: Fri, 1 Apr 2022 19:58:53 +0530 From: Ramalingam C To: intel-gfx , dri-devel , Christian Koenig , rodrigo.vivi@intel.com, Joonas Lahtinen Subject: Re: [PATCH v7 7/9] drm/ttm: Add a parameter to add extra pages into ttm_tt Message-ID: <20220401142853.GF12046@intel.com> References: <20220401123751.27771-1-ramalingam.c@intel.com> <20220401123751.27771-8-ramalingam.c@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220401123751.27771-8-ramalingam.c@intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Christian, Joonas and vivi Once the premerge results are greeen, if this patch can be merged into drm-intel-gt-next along with other patches could you please ack the request to merge into drm-intel-gt-next? Thanks Ram On 2022-04-01 at 18:07:49 +0530, Ramalingam C wrote: > Add a parameter called "extra_pages" for ttm_tt_init, to indicate that > driver needs extra pages in ttm_tt. > > v2: > Used imperative wording [Thomas and Christian] > > Signed-off-by: Ramalingam C > cc: Christian Koenig > cc: Hellstrom Thomas > Reviewed-by: Thomas Hellstrom > Reviewed-by: Christian Konig > Reviewed-by: Nirmoy Das > --- > drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- > drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +- > drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- > drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- > drivers/gpu/drm/ttm/ttm_tt.c | 12 +++++++----- > drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- > include/drm/ttm/ttm_tt.h | 4 +++- > 7 files changed, 15 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c > index dc7f938bfff2..123045b58fec 100644 > --- a/drivers/gpu/drm/drm_gem_vram_helper.c > +++ b/drivers/gpu/drm/drm_gem_vram_helper.c > @@ -867,7 +867,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, > if (!tt) > return NULL; > > - ret = ttm_tt_init(tt, bo, page_flags, ttm_cached); > + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); > if (ret < 0) > goto err_ttm_tt_init; > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > index c40aca99442f..a878910a563c 100644 > --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c > @@ -293,7 +293,7 @@ static struct ttm_tt *i915_ttm_tt_create(struct ttm_buffer_object *bo, > i915_tt->is_shmem = true; > } > > - ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching); > + ret = ttm_tt_init(&i915_tt->ttm, bo, page_flags, caching, 0); > if (ret) > goto err_free; > > diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c > index 95df5750f47f..9ba871bd19b1 100644 > --- a/drivers/gpu/drm/qxl/qxl_ttm.c > +++ b/drivers/gpu/drm/qxl/qxl_ttm.c > @@ -113,7 +113,7 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, > ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); > if (ttm == NULL) > return NULL; > - if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { > + if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) { > kfree(ttm); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c > index 6ddc16f0fe2b..d27691f2e451 100644 > --- a/drivers/gpu/drm/ttm/ttm_agp_backend.c > +++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c > @@ -134,7 +134,7 @@ struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo, > agp_be->mem = NULL; > agp_be->bridge = bridge; > > - if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined)) { > + if (ttm_tt_init(&agp_be->ttm, bo, page_flags, ttm_write_combined, 0)) { > kfree(agp_be); > return NULL; > } > diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c > index d234aab800a0..1a66d9fc589a 100644 > --- a/drivers/gpu/drm/ttm/ttm_tt.c > +++ b/drivers/gpu/drm/ttm/ttm_tt.c > @@ -134,9 +134,10 @@ void ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) > static void ttm_tt_init_fields(struct ttm_tt *ttm, > struct ttm_buffer_object *bo, > uint32_t page_flags, > - enum ttm_caching caching) > + enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm->num_pages = PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT; > + ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages; > ttm->caching = ttm_cached; > ttm->page_flags = page_flags; > ttm->dma_address = NULL; > @@ -146,9 +147,10 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm, > } > > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching) > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages) > { > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, extra_pages); > > if (ttm_tt_alloc_page_directory(ttm)) { > pr_err("Failed allocating page table\n"); > @@ -180,7 +182,7 @@ int ttm_sg_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > { > int ret; > > - ttm_tt_init_fields(ttm, bo, page_flags, caching); > + ttm_tt_init_fields(ttm, bo, page_flags, caching, 0); > > if (page_flags & TTM_TT_FLAG_EXTERNAL) > ret = ttm_sg_tt_alloc_page_directory(ttm); > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > index b84ecc6d6611..4e3938e62c08 100644 > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c > @@ -517,7 +517,7 @@ static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, > ttm_cached); > else > ret = ttm_tt_init(&vmw_be->dma_ttm, bo, page_flags, > - ttm_cached); > + ttm_cached, 0); > if (unlikely(ret != 0)) > goto out_no_init; > > diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h > index f20832139815..17a0310e8aaa 100644 > --- a/include/drm/ttm/ttm_tt.h > +++ b/include/drm/ttm/ttm_tt.h > @@ -140,6 +140,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * @bo: The buffer object we create the ttm for. > * @page_flags: Page flags as identified by TTM_TT_FLAG_XX flags. > * @caching: the desired caching state of the pages > + * @extra_pages: Extra pages needed for the driver. > * > * Create a struct ttm_tt to back data with system memory pages. > * No pages are actually allocated. > @@ -147,7 +148,8 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc); > * NULL: Out of memory. > */ > int ttm_tt_init(struct ttm_tt *ttm, struct ttm_buffer_object *bo, > - uint32_t page_flags, enum ttm_caching caching); > + uint32_t page_flags, enum ttm_caching caching, > + unsigned long extra_pages); > int ttm_sg_tt_init(struct ttm_tt *ttm_dma, struct ttm_buffer_object *bo, > uint32_t page_flags, enum ttm_caching caching); > > -- > 2.20.1 >