166dcda718
Add stub headers to support ext4l filesystem compilation: New headers: - bit_spinlock.h: bit-based spinlock stubs - blkdev.h: block device structures and operations - buffer_head.h: buffer head management with state functions - crc32c.h: CRC32C checksum stub - fs.h: filesystem structures (super_block, inode operations) - journal-head.h: journal buffer head structure - mutex.h: mutex stubs Updates to existing headers: - compat.h: add rcu_head callback structure - jbd2.h: add wait.h and init.h includes for types - sched.h: add current task stub - workqueue.h: fix flush_work macro warning These provide the minimal Linux kernel interfaces needed for ext4 code to compile in U-Boot's single-threaded environment. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
38 lines
817 B
C
38 lines
817 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Define 'struct task_struct' and provide the main scheduler
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* APIs (schedule(), wakeup variants, etc.)
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*
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* Stub definitions for Linux kernel scheduler.
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* U-Boot is single-threaded.
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*/
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#ifndef _LINUX_SCHED_H
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#define _LINUX_SCHED_H
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#include <linux/types.h>
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struct task_struct {
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int pid;
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char comm[16];
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void *journal_info; /* For jbd2 */
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};
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extern struct task_struct *current;
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#define TASK_RUNNING 0
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#define TASK_INTERRUPTIBLE 1
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#define TASK_UNINTERRUPTIBLE 2
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#define cond_resched() do { } while (0)
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#define yield() do { } while (0)
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/* Note: schedule() is implemented in common/cyclic.c */
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#define in_interrupt() 0
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#define in_atomic() 0
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#define in_task() 1
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#define signal_pending(task) 0
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#define fatal_signal_pending(task) 0
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#endif /* _LINUX_SCHED_H */
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