diff options
Diffstat (limited to 'include/linux/interrupt.h')
| -rw-r--r-- | include/linux/interrupt.h | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 5db970b6615a..f9aee3538461 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -585,6 +585,9 @@ static inline struct task_struct *this_cpu_ksoftirqd(void) /* Tasklets --- multithreaded analogue of BHs. + This API is deprecated. Please consider using threaded IRQs instead: + https://lore.kernel.org/lkml/20200716081538.2sivhkj4hcyrusem@linutronix.de + Main feature differing them of generic softirqs: tasklet is running only on one CPU simultaneously. @@ -608,16 +611,42 @@ struct tasklet_struct struct tasklet_struct *next; unsigned long state; atomic_t count; - void (*func)(unsigned long); + bool use_callback; + union { + void (*func)(unsigned long data); + void (*callback)(struct tasklet_struct *t); + }; unsigned long data; }; -#define DECLARE_TASKLET(name, func, data) \ -struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(0), func, data } +#define DECLARE_TASKLET(name, _callback) \ +struct tasklet_struct name = { \ + .count = ATOMIC_INIT(0), \ + .callback = _callback, \ + .use_callback = true, \ +} + +#define DECLARE_TASKLET_DISABLED(name, _callback) \ +struct tasklet_struct name = { \ + .count = ATOMIC_INIT(1), \ + .callback = _callback, \ + .use_callback = true, \ +} -#define DECLARE_TASKLET_DISABLED(name, func, data) \ -struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(1), func, data } +#define from_tasklet(var, callback_tasklet, tasklet_fieldname) \ + container_of(callback_tasklet, typeof(*var), tasklet_fieldname) +#define DECLARE_TASKLET_OLD(name, _func) \ +struct tasklet_struct name = { \ + .count = ATOMIC_INIT(0), \ + .func = _func, \ +} + +#define DECLARE_TASKLET_DISABLED_OLD(name, _func) \ +struct tasklet_struct name = { \ + .count = ATOMIC_INIT(1), \ + .func = _func, \ +} enum { @@ -686,6 +715,8 @@ extern void tasklet_kill(struct tasklet_struct *t); extern void tasklet_kill_immediate(struct tasklet_struct *t, unsigned int cpu); extern void tasklet_init(struct tasklet_struct *t, void (*func)(unsigned long), unsigned long data); +extern void tasklet_setup(struct tasklet_struct *t, + void (*callback)(struct tasklet_struct *)); /* * Autoprobing for irqs: |