diff options
| author | Jan Beulich <JBeulich@novell.com> | 2010-10-04 10:37:26 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2011-03-15 16:02:18 +0000 |
| commit | 066d6c7f4ec94d40d13061714489783916548cdb (patch) | |
| tree | b3b8763e74d59ea93a948b2527d83c33d32ad968 /include | |
| parent | 57539c1cf9f146ab9988a350dbc2d7e69a8a5c30 (diff) | |
watchdog: Xen watchdog driver
While the hypervisor change adding SCHEDOP_watchdog support included a
daemon to make use of the new functionality, having a kernel driver
for /dev/watchdog so that user space code doesn't need to distinguish
non-Xen and Xen seems to be preferable.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'include')
| -rw-r--r-- | include/xen/interface/sched.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/xen/interface/sched.h b/include/xen/interface/sched.h index 5fec575a800a..dd55dac340de 100644 --- a/include/xen/interface/sched.h +++ b/include/xen/interface/sched.h @@ -65,6 +65,39 @@ struct sched_poll { DEFINE_GUEST_HANDLE_STRUCT(sched_poll); /* + * Declare a shutdown for another domain. The main use of this function is + * in interpreting shutdown requests and reasons for fully-virtualized + * domains. A para-virtualized domain may use SCHEDOP_shutdown directly. + * @arg == pointer to sched_remote_shutdown structure. + */ +#define SCHEDOP_remote_shutdown 4 +struct sched_remote_shutdown { + domid_t domain_id; /* Remote domain ID */ + unsigned int reason; /* SHUTDOWN_xxx reason */ +}; + +/* + * Latch a shutdown code, so that when the domain later shuts down it + * reports this code to the control tools. + * @arg == as for SCHEDOP_shutdown. + */ +#define SCHEDOP_shutdown_code 5 + +/* + * Setup, poke and destroy a domain watchdog timer. + * @arg == pointer to sched_watchdog structure. + * With id == 0, setup a domain watchdog timer to cause domain shutdown + * after timeout, returns watchdog id. + * With id != 0 and timeout == 0, destroy domain watchdog timer. + * With id != 0 and timeout != 0, poke watchdog timer and set new timeout. + */ +#define SCHEDOP_watchdog 6 +struct sched_watchdog { + uint32_t id; /* watchdog ID */ + uint32_t timeout; /* timeout */ +}; + +/* * Reason codes for SCHEDOP_shutdown. These may be interpreted by control * software to determine the appropriate action. For the most part, Xen does * not care about the shutdown code. @@ -73,5 +106,6 @@ DEFINE_GUEST_HANDLE_STRUCT(sched_poll); #define SHUTDOWN_reboot 1 /* Clean up, kill, and then restart. */ #define SHUTDOWN_suspend 2 /* Clean up, save suspend info, kill. */ #define SHUTDOWN_crash 3 /* Tell controller we've crashed. */ +#define SHUTDOWN_watchdog 4 /* Restart because watchdog time expired. */ #endif /* __XEN_PUBLIC_SCHED_H__ */ |