kernel/trace/rv/monitors/deadline/deadline.h

File Facts

System

Linux kernel

Corpus path

kernel/trace/rv/monitors/deadline/deadline.h

Extension

.h

Size

5757 bytes

Lines

204

Domain

Core OS

Bucket

Scheduler, Processes, Timers, Sync, And Syscalls

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/uaccess.h
• linux/sched/deadline.h
• asm/syscall.h
• uapi/linux/sched/types.h
• trace/events/sched.h

Detected Declarations

• function should_skip_syscall_handle
• function is_supported_type
• function is_server_type
• function dl_se
• function task_is_scx_enabled
• function get_server_type
• function extract_params
• function init_storage
• function for_each_possible_cpu
• function handle_newtask
• function handle_exit

Annotated Snippet

if (p->policy == SCHED_DEADLINE) {
			if (!da_create_storage(EXPAND_ID_TASK(p), NULL)) {
				read_unlock(&tasklist_lock);
				goto fail;
			}
		}
	}
	read_unlock(&tasklist_lock);
	return 0;

fail:
	da_monitor_destroy();
	return -ENOMEM;
}

static void __maybe_unused handle_newtask(void *data, struct task_struct *task, u64 flags)
{
	/* Might be superfluous as tasks are not started with this policy.. */
	if (task->policy == SCHED_DEADLINE)
		da_create_storage(EXPAND_ID_TASK(task), NULL);
}

static void __maybe_unused handle_exit(void *data, struct task_struct *p, bool group_dead)
{
	if (p->policy == SCHED_DEADLINE)
		da_destroy_storage(get_entity_id(&p->dl, DL_TASK, DL_TASK));
}

#endif

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/uaccess.h`, `linux/sched/deadline.h`, `asm/syscall.h`, `uapi/linux/sched/types.h`, `trace/events/sched.h`.
• Detected declarations: `function should_skip_syscall_handle`, `function is_supported_type`, `function is_server_type`, `function dl_se`, `function task_is_scx_enabled`, `function get_server_type`, `function extract_params`, `function init_storage`, `function for_each_possible_cpu`, `function handle_newtask`.
• Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.