Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs

Pull header cleanups from Kent Overstreet:
 "The goal is to get sched.h down to a type only header, so the main
  thing happening in this patchset is splitting out various _types.h
  headers and dependency fixups, as well as moving some things out of
  sched.h to better locations.

  This is prep work for the memory allocation profiling patchset which
  adds new sched.h interdepencencies"

* tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits)
  Kill sched.h dependency on rcupdate.h
  kill unnecessary thread_info.h include
  Kill unnecessary kernel.h include
  preempt.h: Kill dependency on list.h
  rseq: Split out rseq.h from sched.h
  LoongArch: signal.c: add header file to fix build error
  restart_block: Trim includes
  lockdep: move held_lock to lockdep_types.h
  sem: Split out sem_types.h
  uidgid: Split out uidgid_types.h
  seccomp: Split out seccomp_types.h
  refcount: Split out refcount_types.h
  uapi/linux/resource.h: fix include
  x86/signal: kill dependency on time.h
  syscall_user_dispatch.h: split out *_types.h
  mm_types_task.h: Trim dependencies
  Split out irqflags_types.h
  ipc: Kill bogus dependency on spinlock.h
  shm: Slim down dependencies
  workqueue: Split out workqueue_types.h
  ...

arch/arm64/include/asm/spectre.h

@@ -13,8 +13,8 @@
 #define __BP_HARDEN_HYP_VECS_SZ	((BP_HARDEN_EL2_SLOTS - 1) * SZ_2K)
 
 #ifndef __ASSEMBLY__
-
-#include <linux/percpu.h>
+#include <linux/smp.h>
+#include <asm/percpu.h>
 
 #include <asm/cpufeature.h>
 #include <asm/virt.h>

arch/arm64/kernel/ptrace.c

@@ -28,6 +28,7 @@
 #include <linux/hw_breakpoint.h>
 #include <linux/regset.h>
 #include <linux/elf.h>
+#include <linux/rseq.h>
 
 #include <asm/compat.h>
 #include <asm/cpufeature.h>

arch/loongarch/kernel/signal.c

@@ -15,6 +15,7 @@
 #include <linux/context_tracking.h>
 #include <linux/entry-common.h>
 #include <linux/irqflags.h>
+#include <linux/rseq.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/personality.h>

arch/m68k/include/asm/processor.h

@@ -8,6 +8,7 @@
 #ifndef __ASM_M68K_PROCESSOR_H
 #define __ASM_M68K_PROCESSOR_H
 
+#include <linux/preempt.h>
 #include <linux/thread_info.h>
 #include <asm/fpu.h>
 #include <asm/ptrace.h>

arch/microblaze/include/asm/pgtable.h

@@ -336,6 +336,7 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
 }
 
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+struct vm_area_struct;
 static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
 		unsigned long address, pte_t *ptep)
 {

arch/parisc/mm/init.c

@@ -33,6 +33,7 @@
 #include <asm/msgbuf.h>
 #include <asm/sparsemem.h>
 #include <asm/asm-offsets.h>
+#include <asm/shmbuf.h>
 
 extern int  data_start;
 extern void parisc_kernel_start(void);	/* Kernel entry point in head.S */

arch/powerpc/kernel/interrupt.c

@@ -3,6 +3,7 @@
 #include <linux/context_tracking.h>
 #include <linux/err.h>
 #include <linux/compat.h>
+#include <linux/rseq.h>
 #include <linux/sched/debug.h> /* for show_regs */
 
 #include <asm/kup.h>

arch/powerpc/kvm/book3s_64_vio.c

@@ -20,6 +20,7 @@
 #include <linux/iommu.h>
 #include <linux/file.h>
 #include <linux/mm.h>
+#include <linux/rcupdate_wait.h>
 
 #include <asm/kvm_ppc.h>
 #include <asm/kvm_book3s.h>

arch/s390/kernel/signal.c

@@ -12,6 +12,7 @@
 
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
+#include <linux/rseq.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
 #include <linux/kernel.h>

arch/x86/include/asm/current.h

@@ -2,6 +2,7 @@
 #ifndef _ASM_X86_CURRENT_H
 #define _ASM_X86_CURRENT_H
 
+#include <linux/build_bug.h>
 #include <linux/compiler.h>
 
 #ifndef __ASSEMBLY__

arch/x86/include/asm/debugreg.h

@@ -5,6 +5,7 @@
 #include <linux/bug.h>
 #include <linux/percpu.h>
 #include <uapi/asm/debugreg.h>
+#include <asm/cpufeature.h>
 
 DECLARE_PER_CPU(unsigned long, cpu_dr7);
 

arch/x86/include/asm/fpu/types.h

@@ -5,6 +5,8 @@
 #ifndef _ASM_X86_FPU_H
 #define _ASM_X86_FPU_H
 
+#include <asm/page_types.h>
+
 /*
  * The legacy x87 FPU state format, as saved by FSAVE and
  * restored by the FRSTOR instructions:

arch/x86/include/asm/paravirt.h

@@ -6,6 +6,10 @@
 
 #include <asm/paravirt_types.h>
 
+#ifndef __ASSEMBLY__
+struct mm_struct;
+#endif
+
 #ifdef CONFIG_PARAVIRT
 #include <asm/pgtable_types.h>
 #include <asm/asm.h>

arch/x86/include/asm/paravirt_types.h

@@ -5,6 +5,7 @@
 #ifdef CONFIG_PARAVIRT
 
 #ifndef __ASSEMBLY__
+#include <linux/types.h>
 
 #include <asm/desc_defs.h>
 #include <asm/pgtable_types.h>

arch/x86/include/asm/percpu.h

@@ -24,8 +24,8 @@
 
 #else /* ...!ASSEMBLY */
 
-#include <linux/kernel.h>
 #include <linux/stringify.h>
+#include <asm/asm.h>
 
 #ifdef CONFIG_SMP
 #define __percpu_prefix		"%%"__stringify(__percpu_seg)":"

arch/x86/include/asm/preempt.h

@@ -6,7 +6,6 @@
 #include <asm/percpu.h>
 #include <asm/current.h>
 
-#include <linux/thread_info.h>
 #include <linux/static_call_types.h>
 
 /* We use the MSB mostly because its available */

arch/x86/include/uapi/asm/signal.h

@@ -4,7 +4,6 @@
 
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
-#include <linux/time.h>
 #include <linux/compiler.h>
 
 /* Avoid too many header ordering problems.  */

arch/x86/kernel/fpu/bugs.c

@@ -2,6 +2,7 @@
 /*
  * x86 FPU bug checks:
  */
+#include <asm/cpufeature.h>
 #include <asm/fpu/api.h>
 
 /*

arch/x86/kernel/signal.c

@@ -27,6 +27,7 @@
 #include <linux/context_tracking.h>
 #include <linux/entry-common.h>
 #include <linux/syscalls.h>
+#include <linux/rseq.h>
 
 #include <asm/processor.h>
 #include <asm/ucontext.h>

arch/x86/lib/cache-smp.c

@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <asm/paravirt.h>
 #include <linux/smp.h>
 #include <linux/export.h>