diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-09-21 12:58:17 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-11-10 18:38:57 +0100 |
| commit | a8b62fd0850503cf1e557d7e5a98d3f1f5c25eef (patch) | |
| tree | 2c9c1cb9d7778ed6f4f4dac5a8f25041fbac1e68 /include/linux/stop_machine.h | |
| parent | 23859ae44402f4d935b9ee548135dd1e65e2cbf4 (diff) | |
stop_machine: Add function and caller debug info
Crashes in stop-machine are hard to connect to the calling code, add a
little something to help with that.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Link: https://lkml.kernel.org/r/20201023102346.116513635@infradead.org
Diffstat (limited to 'include/linux/stop_machine.h')
| -rw-r--r-- | include/linux/stop_machine.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 76d8b09384a7..30577c3aecf8 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -24,6 +24,7 @@ typedef int (*cpu_stop_fn_t)(void *arg); struct cpu_stop_work { struct list_head list; /* cpu_stopper->works */ cpu_stop_fn_t fn; + unsigned long caller; void *arg; struct cpu_stop_done *done; }; @@ -36,6 +37,8 @@ void stop_machine_park(int cpu); void stop_machine_unpark(int cpu); void stop_machine_yield(const struct cpumask *cpumask); +extern void print_stop_info(const char *log_lvl, struct task_struct *task); + #else /* CONFIG_SMP */ #include <linux/workqueue.h> @@ -80,6 +83,8 @@ static inline bool stop_one_cpu_nowait(unsigned int cpu, return false; } +static inline void print_stop_info(const char *log_lvl, struct task_struct *task) { } + #endif /* CONFIG_SMP */ /* |