projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| a42089dd JF |
1 | /****************************************************************************** |
| 2 | * sched.h | |
| 3 | * | |
| 4 | * Scheduler state interactions | |
| 5 | * | |
| 6 | * Copyright (c) 2005, Keir Fraser <keir@xensource.com> | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef __XEN_PUBLIC_SCHED_H__ | |
| 10 | #define __XEN_PUBLIC_SCHED_H__ | |
| 11 | ||
| 12 | #include "event_channel.h" | |
| 13 | ||
| 14 | /* | |
| 15 | * The prototype for this hypercall is: | |
| 16 | * long sched_op_new(int cmd, void *arg) | |
| 17 | * @cmd == SCHEDOP_??? (scheduler operation). | |
| 18 | * @arg == Operation-specific extra argument(s), as described below. | |
| 19 | * | |
| 20 | * **NOTE**: | |
| 21 | * Versions of Xen prior to 3.0.2 provide only the following legacy version | |
| 22 | * of this hypercall, supporting only the commands yield, block and shutdown: | |
| 23 | * long sched_op(int cmd, unsigned long arg) | |
| 24 | * @cmd == SCHEDOP_??? (scheduler operation). | |
| 25 | * @arg == 0 (SCHEDOP_yield and SCHEDOP_block) | |
| 26 | * == SHUTDOWN_* code (SCHEDOP_shutdown) | |
| 27 | */ | |
| 28 | ||
| 29 | /* | |
| 30 | * Voluntarily yield the CPU. | |
| 31 | * @arg == NULL. | |
| 32 | */ | |
| 33 | #define SCHEDOP_yield 0 | |
| 34 | ||
| 35 | /* | |
| 36 | * Block execution of this VCPU until an event is received for processing. | |
| 37 | * If called with event upcalls masked, this operation will atomically | |
| 38 | * reenable event delivery and check for pending events before blocking the | |
| 39 | * VCPU. This avoids a "wakeup waiting" race. | |
| 40 | * @arg == NULL. | |
| 41 | */ | |
| 42 | #define SCHEDOP_block 1 | |
| 43 | ||
| 44 | /* | |
| 45 | * Halt execution of this domain (all VCPUs) and notify the system controller. | |
| 46 | * @arg == pointer to sched_shutdown structure. | |
| 47 | */ | |
| 48 | #define SCHEDOP_shutdown 2 | |
| 49 | struct sched_shutdown { | |
| 50 | unsigned int reason; /* SHUTDOWN_* */ | |
| 51 | }; | |
| 52 | DEFINE_GUEST_HANDLE_STRUCT(sched_shutdown); | |
| 53 | ||
| 54 | /* | |
| 55 | * Poll a set of event-channel ports. Return when one or more are pending. An | |
| 56 | * optional timeout may be specified. | |
| 57 | * @arg == pointer to sched_poll structure. | |
| 58 | */ | |
| 59 | #define SCHEDOP_poll 3 | |
| 60 | struct sched_poll { | |
| 61 | GUEST_HANDLE(evtchn_port_t) ports; | |
| 62 | unsigned int nr_ports; | |
| 63 | uint64_t timeout; | |
| 64 | }; | |
| 65 | DEFINE_GUEST_HANDLE_STRUCT(sched_poll); | |
| 66 | ||
| 67 | /* | |
| 68 | * Reason codes for SCHEDOP_shutdown. These may be interpreted by control | |
| 69 | * software to determine the appropriate action. For the most part, Xen does | |
| 70 | * not care about the shutdown code. | |
| 71 | */ | |
| 72 | #define SHUTDOWN_poweroff 0 /* Domain exited normally. Clean up and kill. */ | |
| 73 | #define SHUTDOWN_reboot 1 /* Clean up, kill, and then restart. */ | |
| 74 | #define SHUTDOWN_suspend 2 /* Clean up, save suspend info, kill. */ | |
| 75 | #define SHUTDOWN_crash 3 /* Tell controller we've crashed. */ | |
| 76 | ||
| 77 | #endif /* __XEN_PUBLIC_SCHED_H__ */ |