From patchwork Mon Mar 10 12:06:15 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 14009783 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 76FD522C35D; Mon, 10 Mar 2025 12:06:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741608403; cv=none; b=mUeCcG/2zuAygOGQTTRSjAE1pcoFjINlvd8WSJbyjd0A85t9//RTAcXh9T1LHj8BkZsIWuWLnKQBd3/KvxoII1at2OI2RkCpdfKx+vfADKuTHpPknRWgvHPo1p/ppaZt3u4wU5ThQDqEJd0Yy69ddVGurBoiqwWX/f7xoetXbw8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741608403; c=relaxed/simple; bh=bMCIvn+7jf6RMiYjEqkNRC/cCXSSxQerkW6ogfdek4M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HA41zlan8ZMPHqm7T5QaSHRyAiejOYD5wUsBLgA3VPAl1n1NyG/WWv+itBOJX0HFtAUmfaZA83D3clKCsAr3/CYeTRLD9jzBKQFBQG3ICy+r9Lsl9X6joxNHfX+lpwEW8dkF84VuMCPsRNSPC0bqRfahvOh0JaJSOGLucv2v3Qg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c4uygRPz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="c4uygRPz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3DF7C4CEED; Mon, 10 Mar 2025 12:06:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741608403; bh=bMCIvn+7jf6RMiYjEqkNRC/cCXSSxQerkW6ogfdek4M=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=c4uygRPz6bHzOv7JaNd0BKTZdiJEeNNcAfN7JlO1sp451josGYGwOPeVSWBgd+N12 QOw5/LBuUY8o2XXn8mk3aPWeFcHLDfF4dARIrSn4peA4LCdlIglwRYGe80L9TOm5Nh fvWbAvaafZU7hsRYue9WrYK6wXtSF1uVl//tLeDIrXiOtET1ST1idAgk0sOcpN66Qo XMSEACHHxWrEhXDsq2mFwDakCRpfhdwUZuF+V9Ym0SbSNxk+GszSTQGzQutE5uF9Dj 6rEwFHnGHfJlI3b/8CaV0AU7g2mk6SMB2CX3lBmI1fBYXzaIJa5H7iLWESsMAH0nBP iQ7NEvKYLtyYw== From: Maxime Ripard Date: Mon, 10 Mar 2025 13:06:15 +0100 Subject: [PATCH RFC 09/12] dma-buf: Clear cgroup accounting on release Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250310-dmem-cgroups-v1-9-2984c1bc9312@kernel.org> References: <20250310-dmem-cgroups-v1-0-2984c1bc9312@kernel.org> In-Reply-To: <20250310-dmem-cgroups-v1-0-2984c1bc9312@kernel.org> To: Andrew Morton , Marek Szyprowski , Robin Murphy , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Benjamin Gaignard , Brian Starkey , John Stultz , "T.J. Mercier" , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Simona Vetter , Tomasz Figa , Mauro Carvalho Chehab Cc: Hans Verkuil , Laurent Pinchart , linux-mm@kvack.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Maxime Ripard X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1990; i=mripard@kernel.org; h=from:subject:message-id; bh=bMCIvn+7jf6RMiYjEqkNRC/cCXSSxQerkW6ogfdek4M=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDOnnrm5t/yVnmCnbdWIBb4tvabPfyl9udfO64jiO/quN4 GNJyz/dUcrCIMbFICumyBIjbL4k7tSs151sfPNg5rAygQxh4OIUgInsOsLIcPDV65S2uVZWc348 +bw4wjdK8HDKtbceyZUZ2688natTF8zI8LhqgYHRIbd71bsl7t4JEb5RWWed883UeuOfx6vX9BW 8ZwUA X-Developer-Key: i=mripard@kernel.org; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D In order to clean thing up when dma-heaps will allocate and register buffers in the dev cgroup, let's uncharge a released buffer for any (optional) cgroup controller. Signed-off-by: Maxime Ripard --- drivers/dma-buf/dma-buf.c | 7 +++++++ include/linux/dma-buf.h | 5 +++++ 2 files changed, 12 insertions(+) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 5baa83b855156516a0a766bee0789b122473efb3..a95eef17f193454b018dc8177ddfd434d7b64473 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -11,10 +11,11 @@ * refining of this idea. */ #include #include +#include #include #include #include #include #include @@ -97,10 +98,16 @@ static void dma_buf_release(struct dentry *dentry) * * dmabuf->cb_in/out.active are non-0 despite no pending fence callback */ BUG_ON(dmabuf->cb_in.active || dmabuf->cb_out.active); dma_buf_stats_teardown(dmabuf); + +#ifdef CONFIG_CGROUP_DMEM + if (dmabuf->cgroup_pool) + dmem_cgroup_uncharge(dmabuf->cgroup_pool, dmabuf->size); +#endif + dmabuf->ops->release(dmabuf); if (dmabuf->resv == (struct dma_resv *)&dmabuf[1]) dma_resv_fini(dmabuf->resv); diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index 36216d28d8bdc01a9c9c47e27c392413f7f6c5fb..111ca5a738ae0a816ba1551313dfb0a958720b6c 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -437,10 +437,15 @@ struct dma_buf { struct dma_fence_cb cb; wait_queue_head_t *poll; __poll_t active; } cb_in, cb_out; + +#ifdef CONFIG_CGROUP_DMEM + struct dmem_cgroup_pool_state *cgroup_pool; +#endif + #ifdef CONFIG_DMABUF_SYSFS_STATS /** * @sysfs_entry: * * For exposing information about this buffer in sysfs. See also