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| author |   Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2015-08-18 17:42:39 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-26 17:20:44 +0200 |
| commit | ab7373bf235ede864a72f0d2f8f9a21a1748c4a2 (patch) | |
| tree | 3c4f4cc4965006f31f5556bc2c4d4f3c8633e8b4 /drivers/s390/char/ctrlchar.h | |
| parent | s390/numa: remove superfluous ARCH_WANT defines (diff) | |
| download | linux-dev-ab7373bf235ede864a72f0d2f8f9a21a1748c4a2.tar.xz linux-dev-ab7373bf235ede864a72f0d2f8f9a21a1748c4a2.zip | |
s390/ctrlchar: improve handling of magic sysrequests
Extract the sysrq handling from the ctrlchar_handle() into a separate
function that can be directly used by other users.
Introduce a new sysrq_work structure to embed the work_struct and to
specify the magic sysrq function to be invoked.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/char/ctrlchar.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/s390/char/ctrlchar.h b/drivers/s390/char/ctrlchar.h index 1a53552f4981..59c2d6e55e55 100644 --- a/drivers/s390/char/ctrlchar.h +++ b/drivers/s390/char/ctrlchar.h @@ -7,6 +7,8 @@ */ #include <linux/tty.h> +#include <linux/sysrq.h> +#include <linux/workqueue.h> extern unsigned int ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty); @@ -17,3 +19,13 @@ ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty); #define CTRLCHAR_SYSRQ (3 << 8) #define CTRLCHAR_MASK (~0xffu) + + +#ifdef CONFIG_MAGIC_SYSRQ +struct sysrq_work { + int key; + struct work_struct work; +}; + +void schedule_sysrq_work(struct sysrq_work *sw); +#endif |