Commit c1cbad8f authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
Browse files

rseq: Make exit debugging static branch based 



Disconnect it from the config switch and use the static debug branch. This
is a temporary measure for validating the rework. At the end this check
needs to be hidden behind lockdep as it has nothing to do with the other
debug infrastructure, which mainly aids user space debugging by enabling a
zoo of checks which terminate misbehaving tasks instead of letting them
keep the hard to diagnose pieces.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Reviewed-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251027084307.272660745@linutronix.de
parent f7ee1964

include/linux/rseq_entry.h

+1 −1
Original line number Diff line number Diff line
@@ -285,7 +285,7 @@ static __always_inline void rseq_exit_to_user_mode(void) 


	rseq_stat_inc(rseq_stats.exit);



	if (IS_ENABLED(CONFIG_DEBUG_RSEQ))

	if (static_branch_unlikely(&rseq_debug_enabled))

		WARN_ON_ONCE(ev->sched_switch);



	/*