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linux-modules@vger.kernel.org, rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: [PATCH v17 34/47] dept: make dept stop from working on debug_locks_off() Date: Thu, 2 Oct 2025 17:12:34 +0900 Message-Id: <20251002081247.51255-35-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251002081247.51255-1-byungchul@sk.com> References: <20251002081247.51255-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSbUxTZxTHfe597m2pNrt2LFzRRG1GSHDTjeE8ySbBL3rjB98Tk+3DaOyN bYSi5X2LS4VWGlCs1dLIi+PFQdU6a6tmoF2AQaN02DIQqha0GxQJAhm2kIFYW4xfTn7nd/7n fDpCUjJEJQqVqjxerZJlSWkRFk2tavg8Pm1E8YXz1koYPNWOIRzSY6i9aaVBb79EwfxiDQm6 1giGJaNLABGnC0FVn5GE17a3NEz+OYvAFBilYaJ7FwzNvUKwVHUMfml00LDY6yHBbPIieGkr Q3DbNYLAaSmhYcxwh4SB8AwND00VNEz11RIwbaOhvsRJQeuLNgH4q4wEPG8OYnAbGgkwT9BQ dSsBasylRLS8JMB04x4BfzX5MTRrkqCmt5+CSH0OuK6PC2D4nAmD/Uk3gtBAgADrmSAJ9n8H KXA+3QQNp69g0C+FEIxYIxRoauYp8La7Kbg57iPA7XqA4WH1VQyethsUBF74KJirXAve82cp 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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 8b4d97fc4627..b164f74e86e5 100644 --- a/include/linux/dept.h +++ b/include/linux/dept.h @@ -390,6 +390,7 @@ 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); @@ -442,6 +443,7 @@ 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 a0eb4b108de0..1de61306418b 100644 --- a/kernel/dependency/dept.c +++ b/kernel/dependency/dept.c @@ -187,6 +187,12 @@ 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