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sched.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _UAPI_LINUX_SCHED_H #define _UAPI_LINUX_SCHED_H #include <linux/types.h> /* * cloning flags: */ #define CSIGNAL 0x000000ff /* signal mask to be sent at exit */ #define CLONE_VM 0x00000100 /* set if VM shared between processes */ #define CLONE_FS 0x00000200 /* set if fs info shared between processes */ #define CLONE_FILES 0x00000400 /* set if open files shared between processes */ #define CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked signals shared */ #define CLONE_PIDFD 0x00001000 /* set if a pidfd should be placed in parent */ #define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */ #define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */ #define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */ #define CLONE_THREAD 0x00010000 /* Same thread group? */ #define CLONE_NEWNS 0x00020000 /* New mount namespace group */ #define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */ #define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */ #define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */ #define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */ #define CLONE_DETACHED 0x00400000 /* Unused, ignored */ #define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */ #define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */ #define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace */ #define CLONE_NEWUTS 0x04000000 /* New utsname namespace */ #define CLONE_NEWIPC 0x08000000 /* New ipc namespace */ #define CLONE_NEWUSER 0x10000000 /* New user namespace */ #define CLONE_NEWPID 0x20000000 /* New pid namespace */ #define CLONE_NEWNET 0x40000000 /* New network namespace */ #define CLONE_IO 0x80000000 /* Clone io context */ /* Flags for the clone3() syscall. */ #define CLONE_CLEAR_SIGHAND 0x100000000ULL /* Clear any signal handler and reset to SIG_DFL. */ #define CLONE_INTO_CGROUP 0x200000000ULL /* Clone into a specific cgroup given the right permissions. */ /* * cloning flags intersect with CSIGNAL so can be used with unshare and clone3 * syscalls only: */ #define CLONE_NEWTIME 0x00000080 /* New time namespace */ #ifndef __ASSEMBLY__ /** * struct clone_args - arguments for the clone3 syscall * @flags: Flags for the new process as listed above. * All flags are valid except for CSIGNAL and * CLONE_DETACHED. * @pidfd: If CLONE_PIDFD is set, a pidfd will be * returned in this argument. * @child_tid: If CLONE_CHILD_SETTID is set, the TID of the * child process will be returned in the child's * memory. * @parent_tid: If CLONE_PARENT_SETTID is set, the TID of * the child process will be returned in the * parent's memory. * @exit_signal: The exit_signal the parent process will be * sent when the child exits. * @stack: Specify the location of the stack for the * child process. * Note, @stack is expected to point to the * lowest address. The stack direction will be * determined by the kernel and set up * appropriately based on @stack_size. * @stack_size: The size of the stack for the child process. * @tls: If CLONE_SETTLS is set, the tls descriptor * is set to tls. * @set_tid: Pointer to an array of type *pid_t. The size * of the array is defined using @set_tid_size. * This array is used to select PIDs/TIDs for * newly created processes. The first element in * this defines the PID in the most nested PID * namespace. Each additional element in the array * defines the PID in the parent PID namespace of * the original PID namespace. If the array has * less entries than the number of currently * nested PID namespaces only the PIDs in the * corresponding namespaces are set. * @set_tid_size: This defines the size of the array referenced * in @set_tid. This cannot be larger than the * kernel's limit of nested PID namespaces. * @cgroup: If CLONE_INTO_CGROUP is specified set this to * a file descriptor for the cgroup. * * The structure is versioned by size and thus extensible. * New struct members must go at the end of the struct and * must be properly 64bit aligned. */ struct clone_args { __aligned_u64 flags; __aligned_u64 pidfd; __aligned_u64 child_tid; __aligned_u64 parent_tid; __aligned_u64 exit_signal; __aligned_u64 stack; __aligned_u64 stack_size; __aligned_u64 tls; __aligned_u64 set_tid; __aligned_u64 set_tid_size; __aligned_u64 cgroup; }; #endif #define CLONE_ARGS_SIZE_VER0 64 /* sizeof first published struct */ #define CLONE_ARGS_SIZE_VER1 80 /* sizeof second published struct */ #define CLONE_ARGS_SIZE_VER2 88 /* sizeof third published struct */ /* * Scheduling policies */ #define SCHED_NORMAL 0 #define SCHED_FIFO 1 #define SCHED_RR 2 #define SCHED_BATCH 3 /* SCHED_ISO: reserved but not implemented yet */ #define SCHED_IDLE 5 #define SCHED_DEADLINE 6 /* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */ #define SCHED_RESET_ON_FORK 0x40000000 /* * For the sched_{set,get}attr() calls */ #define SCHED_FLAG_RESET_ON_FORK 0x01 #define SCHED_FLAG_RECLAIM 0x02 #define SCHED_FLAG_DL_OVERRUN 0x04 #define SCHED_FLAG_KEEP_POLICY 0x08 #define SCHED_FLAG_KEEP_PARAMS 0x10 #define SCHED_FLAG_UTIL_CLAMP_MIN 0x20 #define SCHED_FLAG_UTIL_CLAMP_MAX 0x40 #define SCHED_FLAG_KEEP_ALL (SCHED_FLAG_KEEP_POLICY | \ SCHED_FLAG_KEEP_PARAMS) #define SCHED_FLAG_UTIL_CLAMP (SCHED_FLAG_UTIL_CLAMP_MIN | \ SCHED_FLAG_UTIL_CLAMP_MAX) #define SCHED_FLAG_ALL (SCHED_FLAG_RESET_ON_FORK | \ SCHED_FLAG_RECLAIM | \ SCHED_FLAG_DL_OVERRUN | \ SCHED_FLAG_KEEP_ALL | \ SCHED_FLAG_UTIL_CLAMP) #endif /* _UAPI_LINUX_SCHED_H */
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