From patchwork Mon Jan 24 01:54:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 12721400 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 DF9DEC433EF for ; Mon, 24 Jan 2022 01:54:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5FFF210E39E; Mon, 24 Jan 2022 01:54:15 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id EA19F10E27C; Mon, 24 Jan 2022 01:54:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1642989254; x=1674525254; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=84M7HeoIxv/91epM6lK+BRfbuXYxR6dGfA3sWedpn9Y=; b=M+0vptMWjRK1WaETFAjfp4Q1X/SEDkJmodkTutl3c+mUZudJvZf3tr5F HPwjZFnP6YI53L25lFn/pgbUd6NcCWGf19NKsiPix0zT7oaYVS6YGrUMV 5zFcdQQ4goNArHodzm7A7+sJf5kUflnZeQkFF0ltJoVr+U4sJPRD3Rj+a 8SIWrqhH0mIBbNgGp6x16HP2TUyl8p/lHlH7TrP3MbuASuolKcKcS4dTz 1FYetE10f/OgwdPiBmQLyHJ4A7B74TY/N5YiCbwgXLdnXKoyCF/PbeBEl P2DlkIV17mpZLM9D6+5Pj4R+ecJjeO2ztMq3oZjnUNBK43Cplf2+eW+XE w==; X-IronPort-AV: E=McAfee;i="6200,9189,10236"; a="226616217" X-IronPort-AV: E=Sophos;i="5.88,311,1635231600"; d="scan'208";a="226616217" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2022 17:54:13 -0800 X-IronPort-AV: E=Sophos;i="5.88,311,1635231600"; d="scan'208";a="627320385" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2022 17:54:12 -0800 From: ira.weiny@intel.com To: David Airlie , Daniel Vetter , Patrik Jakobsson , Rob Clark , Sean Paul Subject: [PATCH V2 1/7] drm/i915: Replace kmap() with kmap_local_page() Date: Sun, 23 Jan 2022 17:54:03 -0800 Message-Id: <20220124015409.807587-2-ira.weiny@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220124015409.807587-1-ira.weiny@intel.com> References: <20220124015409.807587-1-ira.weiny@intel.com> MIME-Version: 1.0 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: , Cc: linux-arm-msm@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Ira Weiny Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Ira Weiny kmap() is being deprecated and these usages are all local to the thread so there is no reason kmap_local_page() can't be used. Replace kmap() calls with kmap_local_page(). Signed-off-by: Ira Weiny --- Changes for V2: From Christoph Helwig Prefer the use of memcpy_*_page() where appropriate. --- drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 6 ++---- drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 8 ++++---- drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c | 4 ++-- drivers/gpu/drm/i915/gt/shmem_utils.c | 7 ++----- drivers/gpu/drm/i915/i915_gem.c | 8 ++++---- drivers/gpu/drm/i915/i915_gpu_error.c | 4 ++-- 6 files changed, 16 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c index cc9fe258fba7..8d6983312cda 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c @@ -619,7 +619,7 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv, do { unsigned int len = min_t(typeof(size), size, PAGE_SIZE); struct page *page; - void *pgdata, *vaddr; + void *pgdata; err = pagecache_write_begin(file, file->f_mapping, offset, len, 0, @@ -627,9 +627,7 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv, if (err < 0) goto fail; - vaddr = kmap(page); - memcpy(vaddr, data, len); - kunmap(page); + memcpy_to_page(page, 0, data, len); err = pagecache_write_end(file, file->f_mapping, offset, len, len, diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c index c6291429b00c..faf9f14e13eb 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -145,7 +145,7 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj, intel_gt_flush_ggtt_writes(to_gt(i915)); p = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT); - cpu = kmap(p) + offset_in_page(offset); + cpu = kmap_local_page(p) + offset_in_page(offset); drm_clflush_virt_range(cpu, sizeof(*cpu)); if (*cpu != (u32)page) { pr_err("Partial view for %lu [%u] (offset=%llu, size=%u [%llu, row size %u], fence=%d, tiling=%d, stride=%d) misalignment, expected write to page (%llu + %u [0x%llx]) of 0x%x, found 0x%x\n", @@ -163,7 +163,7 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj, } *cpu = 0; drm_clflush_virt_range(cpu, sizeof(*cpu)); - kunmap(p); + kunmap_local(cpu); out: __i915_vma_put(vma); @@ -239,7 +239,7 @@ static int check_partial_mappings(struct drm_i915_gem_object *obj, intel_gt_flush_ggtt_writes(to_gt(i915)); p = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT); - cpu = kmap(p) + offset_in_page(offset); + cpu = kmap_local_page(p) + offset_in_page(offset); drm_clflush_virt_range(cpu, sizeof(*cpu)); if (*cpu != (u32)page) { pr_err("Partial view for %lu [%u] (offset=%llu, size=%u [%llu, row size %u], fence=%d, tiling=%d, stride=%d) misalignment, expected write to page (%llu + %u [0x%llx]) of 0x%x, found 0x%x\n", @@ -257,7 +257,7 @@ static int check_partial_mappings(struct drm_i915_gem_object *obj, } *cpu = 0; drm_clflush_virt_range(cpu, sizeof(*cpu)); - kunmap(p); + kunmap_local(cpu); if (err) return err; diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c index f8948de72036..743a414f86f3 100644 --- a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c +++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c @@ -743,7 +743,7 @@ static void swizzle_page(struct page *page) char *vaddr; int i; - vaddr = kmap(page); + vaddr = kmap_local_page(page); for (i = 0; i < PAGE_SIZE; i += 128) { memcpy(temp, &vaddr[i], 64); @@ -751,7 +751,7 @@ static void swizzle_page(struct page *page) memcpy(&vaddr[i + 64], temp, 64); } - kunmap(page); + kunmap_local(vaddr); } /** diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.c b/drivers/gpu/drm/i915/gt/shmem_utils.c index 0683b27a3890..d47f262d2f07 100644 --- a/drivers/gpu/drm/i915/gt/shmem_utils.c +++ b/drivers/gpu/drm/i915/gt/shmem_utils.c @@ -97,22 +97,19 @@ static int __shmem_rw(struct file *file, loff_t off, unsigned int this = min_t(size_t, PAGE_SIZE - offset_in_page(off), len); struct page *page; - void *vaddr; page = shmem_read_mapping_page_gfp(file->f_mapping, pfn, GFP_KERNEL); if (IS_ERR(page)) return PTR_ERR(page); - vaddr = kmap(page); if (write) { - memcpy(vaddr + offset_in_page(off), ptr, this); + memcpy_to_page(page, offset_in_page(off), ptr, this); set_page_dirty(page); } else { - memcpy(ptr, vaddr + offset_in_page(off), this); + memcpy_from_page(ptr, page, offset_in_page(off), this); } mark_page_accessed(page); - kunmap(page); put_page(page); len -= this; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 915bf431f320..62ba61f31ad1 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -196,14 +196,14 @@ shmem_pread(struct page *page, int offset, int len, char __user *user_data, char *vaddr; int ret; - vaddr = kmap(page); + vaddr = kmap_local_page(page); if (needs_clflush) drm_clflush_virt_range(vaddr + offset, len); ret = __copy_to_user(user_data, vaddr + offset, len); - kunmap(page); + kunmap_local(vaddr); return ret ? -EFAULT : 0; } @@ -618,7 +618,7 @@ shmem_pwrite(struct page *page, int offset, int len, char __user *user_data, char *vaddr; int ret; - vaddr = kmap(page); + vaddr = kmap_local_page(page); if (needs_clflush_before) drm_clflush_virt_range(vaddr + offset, len); @@ -627,7 +627,7 @@ shmem_pwrite(struct page *page, int offset, int len, char __user *user_data, if (!ret && needs_clflush_after) drm_clflush_virt_range(vaddr + offset, len); - kunmap(page); + kunmap_local(vaddr); return ret ? -EFAULT : 0; } diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 5ae812d60abe..e83821914703 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -1093,9 +1093,9 @@ i915_vma_coredump_create(const struct intel_gt *gt, drm_clflush_pages(&page, 1); - s = kmap(page); + s = kmap_local_page(page); ret = compress_page(compress, s, dst, false); - kunmap(page); + kunmap_local(s); drm_clflush_pages(&page, 1);