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([2a02:810d:4b3f:de9c:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id c16-20020a17090603d000b00986e6a7d230sm377729eja.168.2023.06.19.17.42.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 17:42:33 -0700 (PDT) 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 Cc: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Danilo Krummrich Subject: [PATCH drm-next v5 02/14] maple_tree: split up MA_STATE() macro Date: Tue, 20 Jun 2023 02:42:05 +0200 Message-Id: <20230620004217.4700-3-dakr@redhat.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230620004217.4700-1-dakr@redhat.com> References: <20230620004217.4700-1-dakr@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org 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_iterator { struct ma_state mas; struct sample_mgr *mgr; }; \#define SAMPLE_ITERATOR(name, __mgr, start) \ struct sample_iterator name = { \ .mas = MA_STATE_INIT(&(__mgr)->mt, start, 0), \ .mgr = __mgr, \ } \#define sample_iter_for_each_range(it__, entry__, end__) \ mas_for_each(&(it__).mas, entry__, end__) -- struct sample *sample; SAMPLE_ITERATOR(si, min); sample_iter_for_each_range(&si, sample, max) { frob(mgr, sample); } Reviewed-by: Liam R. Howlett 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 1fadb5f5978b..87d55334f1c2 100644 --- a/include/linux/maple_tree.h +++ b/include/linux/maple_tree.h @@ -423,8 +423,8 @@ 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_INIT(mt, first, end) \ + { \ .tree = mt, \ .index = first, \ .last = end, \ @@ -435,6 +435,9 @@ struct ma_wr_state { .mas_flags = 0, \ } +#define MA_STATE(name, mt, first, end) \ + struct ma_state name = MA_STATE_INIT(mt, first, end) + #define MA_WR_STATE(name, ma_state, wr_entry) \ struct ma_wr_state name = { \ .mas = ma_state, \ -- 2.40.1