diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2025-10-27 09:44:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-11-04 08:32:49 +0100 |
| commit | 9c37cb6e80b8fcdddc1236ba42ffd438f511192b (patch) | |
| tree | c98cf8ed90da3c96fe0f86b5737dff126031ccfa /include | |
| parent | 5412910487d0839111e4f2f3a6f33f6c9af9b007 (diff) | |
rseq: Provide static branch for runtime debugging
Config based debug is rarely turned on and is not available easily when
things go wrong.
Provide a static branch to allow permanent integration of debug mechanisms
along with the usual toggles in Kconfig, command line and debugfs.
Requested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251027084307.089270547@linutronix.de
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rseq_entry.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/rseq_entry.h b/include/linux/rseq_entry.h index ff9080b89be3..ed8e5f89499b 100644 --- a/include/linux/rseq_entry.h +++ b/include/linux/rseq_entry.h @@ -34,6 +34,7 @@ DECLARE_PER_CPU(struct rseq_stats, rseq_stats); #endif /* !CONFIG_RSEQ_STATS */ #ifdef CONFIG_RSEQ +#include <linux/jump_label.h> #include <linux/rseq.h> #include <linux/tracepoint-defs.h> @@ -64,6 +65,8 @@ static inline void rseq_trace_ip_fixup(unsigned long ip, unsigned long start_ip, unsigned long offset, unsigned long abort_ip) { } #endif /* !CONFIG_TRACEPOINT */ +DECLARE_STATIC_KEY_MAYBE(CONFIG_RSEQ_DEBUG_DEFAULT_ENABLE, rseq_debug_enabled); + static __always_inline void rseq_note_user_irq_entry(void) { if (IS_ENABLED(CONFIG_GENERIC_IRQ_ENTRY)) |