5029b8c91b
Add stub headers for various Linux kernel interfaces that ext4 code expects: - sched.h: scheduler stubs (task_struct, cond_resched, yield) - wait.h: wait queue stubs - rwsem.h: read-write semaphore stubs - percpu_counter.h: percpu counter implementation (single-threaded) - random.h: random number stubs - quotaops.h: disk quota operation stubs - part_stat.h: partition statistics stubs - prefetch.h: prefetch operation stubs - sort.h: sort wrapper using stdlib qsort - swap.h: swap/memory management stubs Update compat.h to include new headers and remove duplicate definitions. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com> Series-to: concept Cover-letter: ext4l: Add Linux compatibility headers This series extracts Linux kernel compatibility declarations from include/linux/compat.h into their own header files, matching the Linux kernel's organization. This makes it easier to port Linux filesystem code to U-Boot and keeps the compatibility layer maintainable. The headers come from Linux v6.18 Headers added: - export.h: EXPORT_SYMBOL macros - stddef.h: sizeof_field() macro - uaccess.h: copy_to/from_user stubs - capability.h, cred.h, file.h, path.h, security.h, seq_file.h - freezer.h: process freezer stubs - slab.h, vmalloc.h: memory allocation - module.h: kernel module stubs - init.h: initcall macros - kthread.h: kernel thread stubs - timer.h, workqueue.h: timer and workqueue stubs - sched.h, wait.h, rwsem.h: scheduler and synchronization - percpu_counter.h, random.h, quotaops.h, part_stat.h, prefetch.h, sort.h, swap.h All headers include appropriate copyright/author information from the original Linux sources. END Series-links: 1:77 Series-version: 2 Signed-off-by: Simon Glass <simon.glass@canonical.com>
32 lines
883 B
C
32 lines
883 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Linux wait queue related types and methods
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*
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* Stub definitions for Linux kernel wait queues.
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* U-Boot doesn't use wait queues.
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*/
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#ifndef _LINUX_WAIT_H
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#define _LINUX_WAIT_H
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typedef int wait_queue_head_t;
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struct wait_queue_entry {
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int dummy;
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};
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#define DECLARE_WAITQUEUE(name, task) do { } while (0)
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#define DECLARE_WAIT_QUEUE_HEAD(name) do { } while (0)
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#define init_waitqueue_head(wq) do { } while (0)
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#define add_wait_queue(wq, entry) do { } while (0)
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#define remove_wait_queue(wq, entry) do { } while (0)
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#define wake_up(wq) do { } while (0)
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#define wake_up_all(wq) do { } while (0)
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#define wake_up_interruptible(wq) do { } while (0)
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#define wake_up_interruptible_all(wq) do { } while (0)
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#define wait_event(wq, condition) do { } while (0)
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#define wait_event_interruptible(wq, condition) 0
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#endif /* _LINUX_WAIT_H */
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