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([2a02:810d:4b3f:de78:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id r10-20020a1709063d6a00b00882f9130eafsm2167138ejf.26.2023.02.17.05.44.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Feb 2023 05:44:40 -0800 (PST) From: Danilo Krummrich To: airlied@gmail.com, daniel@ffwll.ch, tzimmermann@suse.de, mripard@kernel.org, corbet@lwn.net, christian.koenig@amd.com, bskeggs@redhat.com, Liam.Howlett@oracle.com, matthew.brost@intel.com, boris.brezillon@collabora.com, alexdeucher@gmail.com, ogabbay@kernel.org, bagasdotme@gmail.com, willy@infradead.org, jason@jlekstrand.net Date: Fri, 17 Feb 2023 14:44:09 +0100 Message-Id: <20230217134422.14116-4-dakr@redhat.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230217134422.14116-1-dakr@redhat.com> References: <20230217134422.14116-1-dakr@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true Subject: [Nouveau] [PATCH drm-next v2 03/16] maple_tree: split up MA_STATE() macro X-BeenThere: nouveau@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Nouveau development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" Split up the MA_STATE() macro such that components using the maple tree can easily inherit from struct ma_state and build custom tree walk macros to hide their internals from users. Example: struct sample_iter { struct ma_state mas; struct sample_mgr *mgr; struct sample_entry *entry; }; \#define SAMPLE_ITER(name, __mgr) \ struct sample_iter name = { \ .mas = __MA_STATE(&(__mgr)->mt, 0, 0), .mgr = __mgr, .entry = NULL, } \#define sample_iter_for_each_range(it__, start__, end__) \ for ((it__).mas.index = start__, (it__).entry = mas_find(&(it__).mas, end__ - 1); \ (it__).entry; (it__).entry = mas_find(&(it__).mas, end__ - 1)) Signed-off-by: Danilo Krummrich --- include/linux/maple_tree.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h index e594db58a0f1..ca04c900e51a 100644 --- a/include/linux/maple_tree.h +++ b/include/linux/maple_tree.h @@ -424,8 +424,8 @@ struct ma_wr_state { #define MA_ERROR(err) \ ((struct maple_enode *)(((unsigned long)err << 2) | 2UL)) -#define MA_STATE(name, mt, first, end) \ - struct ma_state name = { \ +#define __MA_STATE(mt, first, end) \ + { \ .tree = mt, \ .index = first, \ .last = end, \ @@ -435,6 +435,9 @@ struct ma_wr_state { .alloc = NULL, \ } +#define MA_STATE(name, mt, first, end) \ + struct ma_state name = __MA_STATE(mt, first, end) + #define MA_WR_STATE(name, ma_state, wr_entry) \ struct ma_wr_state name = { \ .mas = ma_state, \ -- 2.39.1