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Thu, 17 Oct 2019 04:49:14 -0700 (PDT) From: Rasmus Villemoes To: Masahiro Yamada , Andrew Morton , Gao Xiang Subject: [RFC PATCH 2/3] lib: lz4: wire up watchdog keepalive during decompression Date: Thu, 17 Oct 2019 13:49:05 +0200 Message-Id: <20191017114906.30302-3-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191017114906.30302-1-linux@rasmusvillemoes.dk> References: <20191017114906.30302-1-linux@rasmusvillemoes.dk> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191017_044916_525769_6C519572 X-CRM114-Status: GOOD ( 11.01 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:142 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@pengutronix.de, Linus Walleij , Rasmus Villemoes , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Some boards have a hardware watchdog that (a) cannot be disabled and (b) has a timeout short enough that there's no chance for the kernel to get through decompression, let alone reach the initialization of the appropriate watchdog device driver. In order to allow booting such boards, the decompression routine needs to service the watchdog in its main loop. This wires up lz4 to do that via the decompress_keepalive() macro defined in the new linux/decompress/keepalive.h. Signed-off-by: Rasmus Villemoes --- lib/lz4/lz4_decompress.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c index 0c9d3ad17e0f..54ba41d073a6 100644 --- a/lib/lz4/lz4_decompress.c +++ b/lib/lz4/lz4_decompress.c @@ -39,6 +39,7 @@ #include #include #include +#include /*-***************************** * Decompression functions @@ -129,6 +130,7 @@ static FORCE_INLINE int LZ4_decompress_generic( /* ip < iend before the increment */ assert(!endOnInput || ip <= iend); + decompress_keepalive(); /* * A two-stage shortcut for the most common case: