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| author | hselasky <hselasky@FreeBSD.org> | 2018-02-25 10:18:02 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2018-02-25 10:18:02 +0000 |
| commit | 3aba0a58657077eb5f2be3deee1dfd7d718bf914 (patch) | |
| tree | 81728d5781665e0b0bf677b481ef60b03d5c0bec | |
| parent | 7e32a4a5b06a53e8c7f60a7a74ad95c77be3cfe6 (diff) | |
| download | FreeBSD-src-3aba0a58657077eb5f2be3deee1dfd7d718bf914.zip FreeBSD-src-3aba0a58657077eb5f2be3deee1dfd7d718bf914.tar.gz | |
MFC r329376:
Implement tasklet_enable() and tasklet_disable() in the LinuxKPI.
Requested by: Johannes Lundberg <johalun0@gmail.com>
Sponsored by: Mellanox Technologies
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/interrupt.h | 2 | ||||
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_tasklet.c | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/interrupt.h b/sys/compat/linuxkpi/common/include/linux/interrupt.h index e9bae51..0d9a665 100644 --- a/sys/compat/linuxkpi/common/include/linux/interrupt.h +++ b/sys/compat/linuxkpi/common/include/linux/interrupt.h @@ -200,5 +200,7 @@ extern void tasklet_schedule(struct tasklet_struct *); extern void tasklet_kill(struct tasklet_struct *); extern void tasklet_init(struct tasklet_struct *, tasklet_func_t *, unsigned long data); +extern void tasklet_enable(struct tasklet_struct *); +extern void tasklet_disable(struct tasklet_struct *); #endif /* _LINUX_INTERRUPT_H_ */ diff --git a/sys/compat/linuxkpi/common/src/linux_tasklet.c b/sys/compat/linuxkpi/common/src/linux_tasklet.c index 5fe9455..549af86 100644 --- a/sys/compat/linuxkpi/common/src/linux_tasklet.c +++ b/sys/compat/linuxkpi/common/src/linux_tasklet.c @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); #define TASKLET_ST_BUSY 1 #define TASKLET_ST_EXEC 2 #define TASKLET_ST_LOOP 3 +#define TASKLET_ST_PAUSED 4 #define TASKLET_ST_CMPSET(ts, old, new) \ atomic_cmpset_ptr((volatile uintptr_t *)&(ts)->entry.tqe_prev, old, new) @@ -196,3 +197,21 @@ tasklet_kill(struct tasklet_struct *ts) while (TASKLET_ST_GET(ts) != TASKLET_ST_IDLE) pause("W", 1); } + +void +tasklet_enable(struct tasklet_struct *ts) +{ + (void) TASKLET_ST_CMPSET(ts, TASKLET_ST_PAUSED, TASKLET_ST_IDLE); +} + +void +tasklet_disable(struct tasklet_struct *ts) +{ + while (1) { + if (TASKLET_ST_GET(ts) == TASKLET_ST_PAUSED) + break; + if (TASKLET_ST_CMPSET(ts, TASKLET_ST_IDLE, TASKLET_ST_PAUSED)) + break; + pause("W", 1); + } +} |
