150 lines · c
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_SCHED_H3#define _UAPI_LINUX_SCHED_H4 5#include <linux/types.h>6 7/*8 * cloning flags:9 */10#define CSIGNAL 0x000000ff /* signal mask to be sent at exit */11#define CLONE_VM 0x00000100 /* set if VM shared between processes */12#define CLONE_FS 0x00000200 /* set if fs info shared between processes */13#define CLONE_FILES 0x00000400 /* set if open files shared between processes */14#define CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked signals shared */15#define CLONE_PIDFD 0x00001000 /* set if a pidfd should be placed in parent */16#define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */17#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */18#define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */19#define CLONE_THREAD 0x00010000 /* Same thread group? */20#define CLONE_NEWNS 0x00020000 /* New mount namespace group */21#define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */22#define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */23#define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */24#define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */25#define CLONE_DETACHED 0x00400000 /* Unused, ignored */26#define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */27#define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */28#define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace */29#define CLONE_NEWUTS 0x04000000 /* New utsname namespace */30#define CLONE_NEWIPC 0x08000000 /* New ipc namespace */31#define CLONE_NEWUSER 0x10000000 /* New user namespace */32#define CLONE_NEWPID 0x20000000 /* New pid namespace */33#define CLONE_NEWNET 0x40000000 /* New network namespace */34#define CLONE_IO 0x80000000 /* Clone io context */35 36/* Flags for the clone3() syscall. */37#define CLONE_CLEAR_SIGHAND 0x100000000ULL /* Clear any signal handler and reset to SIG_DFL. */38#define CLONE_INTO_CGROUP 0x200000000ULL /* Clone into a specific cgroup given the right permissions. */39 40/*41 * cloning flags intersect with CSIGNAL so can be used with unshare and clone342 * syscalls only:43 */44#define CLONE_NEWTIME 0x00000080 /* New time namespace */45 46#ifndef __ASSEMBLY__47/**48 * struct clone_args - arguments for the clone3 syscall49 * @flags: Flags for the new process as listed above.50 * All flags are valid except for CSIGNAL and51 * CLONE_DETACHED.52 * @pidfd: If CLONE_PIDFD is set, a pidfd will be53 * returned in this argument.54 * @child_tid: If CLONE_CHILD_SETTID is set, the TID of the55 * child process will be returned in the child's56 * memory.57 * @parent_tid: If CLONE_PARENT_SETTID is set, the TID of58 * the child process will be returned in the59 * parent's memory.60 * @exit_signal: The exit_signal the parent process will be61 * sent when the child exits.62 * @stack: Specify the location of the stack for the63 * child process.64 * Note, @stack is expected to point to the65 * lowest address. The stack direction will be66 * determined by the kernel and set up67 * appropriately based on @stack_size.68 * @stack_size: The size of the stack for the child process.69 * @tls: If CLONE_SETTLS is set, the tls descriptor70 * is set to tls.71 * @set_tid: Pointer to an array of type *pid_t. The size72 * of the array is defined using @set_tid_size.73 * This array is used to select PIDs/TIDs for74 * newly created processes. The first element in75 * this defines the PID in the most nested PID76 * namespace. Each additional element in the array77 * defines the PID in the parent PID namespace of78 * the original PID namespace. If the array has79 * less entries than the number of currently80 * nested PID namespaces only the PIDs in the81 * corresponding namespaces are set.82 * @set_tid_size: This defines the size of the array referenced83 * in @set_tid. This cannot be larger than the84 * kernel's limit of nested PID namespaces.85 * @cgroup: If CLONE_INTO_CGROUP is specified set this to86 * a file descriptor for the cgroup.87 *88 * The structure is versioned by size and thus extensible.89 * New struct members must go at the end of the struct and90 * must be properly 64bit aligned.91 */92struct clone_args {93 __aligned_u64 flags;94 __aligned_u64 pidfd;95 __aligned_u64 child_tid;96 __aligned_u64 parent_tid;97 __aligned_u64 exit_signal;98 __aligned_u64 stack;99 __aligned_u64 stack_size;100 __aligned_u64 tls;101 __aligned_u64 set_tid;102 __aligned_u64 set_tid_size;103 __aligned_u64 cgroup;104};105#endif106 107#define CLONE_ARGS_SIZE_VER0 64 /* sizeof first published struct */108#define CLONE_ARGS_SIZE_VER1 80 /* sizeof second published struct */109#define CLONE_ARGS_SIZE_VER2 88 /* sizeof third published struct */110 111/*112 * Scheduling policies113 */114#define SCHED_NORMAL 0115#define SCHED_FIFO 1116#define SCHED_RR 2117#define SCHED_BATCH 3118/* SCHED_ISO: reserved but not implemented yet */119#define SCHED_IDLE 5120#define SCHED_DEADLINE 6121#define SCHED_EXT 7122 123/* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */124#define SCHED_RESET_ON_FORK 0x40000000125 126/*127 * For the sched_{set,get}attr() calls128 */129#define SCHED_FLAG_RESET_ON_FORK 0x01130#define SCHED_FLAG_RECLAIM 0x02131#define SCHED_FLAG_DL_OVERRUN 0x04132#define SCHED_FLAG_KEEP_POLICY 0x08133#define SCHED_FLAG_KEEP_PARAMS 0x10134#define SCHED_FLAG_UTIL_CLAMP_MIN 0x20135#define SCHED_FLAG_UTIL_CLAMP_MAX 0x40136 137#define SCHED_FLAG_KEEP_ALL (SCHED_FLAG_KEEP_POLICY | \138 SCHED_FLAG_KEEP_PARAMS)139 140#define SCHED_FLAG_UTIL_CLAMP (SCHED_FLAG_UTIL_CLAMP_MIN | \141 SCHED_FLAG_UTIL_CLAMP_MAX)142 143#define SCHED_FLAG_ALL (SCHED_FLAG_RESET_ON_FORK | \144 SCHED_FLAG_RECLAIM | \145 SCHED_FLAG_DL_OVERRUN | \146 SCHED_FLAG_KEEP_ALL | \147 SCHED_FLAG_UTIL_CLAMP)148 149#endif /* _UAPI_LINUX_SCHED_H */150