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Biederman" , "Kees Cook" , "Oleg Nesterov" , "Mark Brown" , "Mark Rutland" , "Steven Rostedt" , "Guo Hui" Cc: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/1] arm64: remove unnecessary ifdefs around is_compat_task() X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240108_221915_826621_C74EF57C X-CRM114-Status: GOOD ( 14.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jan 8, 2024, at 18:43, Leonardo Bras wrote: > Currently some parts of the codebase will test for CONFIG_COMPAT before > testing is_compat_task(). > > is_compat_task() is a inlined function only present on CONFIG_COMPAT. > On the other hand, for !CONFIG_COMPAT, we have in linux/compat.h: > > #define is_compat_task() (0) > > Since we have this define available in every usage of is_compat_task() for > !CONFIG_COMPAT, it's unnecessary to keep the ifdefs, since the compiler is > smart enough to optimize-out those snippets on CONFIG_COMPAT=n > > This requires some regset code as well as a few other defines to be made > available on !CONFIG_COMPAT, so some symbols can get resolved before > getting optimized-out. > > Signed-off-by: Leonardo Bras > --- > Changes since v1: > - Move some regset code and other defines outside of CONFIG_COMPAT > - Closes: > https://lore.kernel.org/oe-kbuild-all/202401061219.Y2LD7LTx-lkp@intel.com/ > Link: > https://lore.kernel.org/all/20240105041458.126602-3-leobras@redhat.com/ Looks good to me, and did not cause any regressions in an overnight randconfig build loop. Reviewed-by: Arnd Bergmann _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel