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yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com Subject: [PATCH v15 35/43] dept: make dept stop from working on debug_locks_off() Date: Tue, 13 May 2025 19:07:22 +0900 Message-Id: <20250513100730.12664-36-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250513100730.12664-1-byungchul@sk.com> References: <20250513100730.12664-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa2xLcRjG/c85Pee0UzkrscNcK4sgLpXh/eAW14MIyz65hbJjLbtIN5sR stHJjM5IprFrN0vVVtu0Lhu6zGalLlPMLmyzlqDZZoyW1mZa4subX573eZ73y0vjkgeC8bQy LpFXxcljpKSIEPWNLJ49MG6aYp7aLAX39wwC8iuNJNgryhEYr6dh4GpcC62eXgS/nj7DQZtj R1Ds6MThurULgcVwnISX70dBs7ufBFvOaRJOXKok4XnPIAYdF85jUG7aCG/1Hwh4nF2CgdZF Qp72BOYfnzDw6sso0KeGgdOQS8GgQwa2rhYBWF7PgouFHSTctdgIsFY7MXh5O5+ELuOwAB5b HxLgyQoF+zmNAK5+LiGhx6PHQe/up+BFnQ4Dq24sVKn9hSe//RbAA00dBidLr2HQ3H4HQW1G NwYmYwsJDe5eDMymHBx8lxsROLP6KEg/46UgLy0Lwen0CwSoOxbAr5/+ywXfZZBWVEXA1aEW 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x5DNNE70LdWdMgZwDRJbwD23q5dPcoHMw1GBBFnIb0tbrm6fGPMo6rA1KzqDHgiyKZmpQWRT+J7vc8eIiL5ccO5omwNtAtsB7mZ08n/xLtHKRXfs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: For many reasons, debug_locks_off() is called to stop lock debuging feature e.g. on panic(). dept should also stop it in the conditions. Signed-off-by: Byungchul Park --- include/linux/dept.h | 2 ++ kernel/dependency/dept.c | 6 ++++++ lib/debug_locks.c | 2 ++ 3 files changed, 10 insertions(+) diff --git a/include/linux/dept.h b/include/linux/dept.h index 19d72b0b0c4b..a6ff9db9bcf9 100644 --- a/include/linux/dept.h +++ b/include/linux/dept.h @@ -395,6 +395,7 @@ struct dept_ext_wgen { unsigned int wgen; }; +extern void dept_stop_emerg(void); extern void dept_on(void); extern void dept_off(void); extern void dept_init(void); @@ -447,6 +448,7 @@ struct dept_ext_wgen { }; #define DEPT_MAP_INITIALIZER(n, k) { } +#define dept_stop_emerg() do { } while (0) #define dept_on() do { } while (0) #define dept_off() do { } while (0) #define dept_init() do { } while (0) diff --git a/kernel/dependency/dept.c b/kernel/dependency/dept.c index 5397167c7031..3313ac4df3a6 100644 --- a/kernel/dependency/dept.c +++ b/kernel/dependency/dept.c @@ -186,6 +186,12 @@ static void dept_unlock(void) arch_spin_unlock(&dept_spin); } +void dept_stop_emerg(void) +{ + WRITE_ONCE(dept_stop, 1); +} +EXPORT_SYMBOL_GPL(dept_stop_emerg); + enum bfs_ret { BFS_CONTINUE, BFS_DONE, diff --git a/lib/debug_locks.c b/lib/debug_locks.c index a75ee30b77cb..14a965914a8f 100644 --- a/lib/debug_locks.c +++ b/lib/debug_locks.c @@ -38,6 +38,8 @@ EXPORT_SYMBOL_GPL(debug_locks_silent); */ int debug_locks_off(void) { + dept_stop_emerg(); + if (debug_locks && __debug_locks_off()) { if (!debug_locks_silent) { console_verbose(); -- 2.17.1