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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system
Pull "Disintegrate and delete asm/system.h" from David Howells:
"Here are a bunch of patches to disintegrate asm/system.h into a set of
separate bits to relieve the problem of circular inclusion
dependencies.
I've built all the working defconfigs from all the arches that I can
and made sure that they don't break.
The reason for these patches is that I recently encountered a circular
dependency problem that came about when I produced some patches to
optimise get_order() by rewriting it to use ilog2().
This uses bitops - and on the SH arch asm/bitops.h drags in
asm-generic/get_order.h by a circuituous route involving asm/system.h.
The main difficulty seems to be asm/system.h. It holds a number of
low level bits with no/few dependencies that are commonly used (eg.
memory barriers) and a number of bits with more dependencies that
aren't used in many places (eg. switch_to()).
These patches break asm/system.h up into the following core pieces:
(1) asm/barrier.h
Move memory barriers here. This already done for MIPS and Alpha.
(2) asm/switch_to.h
Move switch_to() and related stuff here.
(3) asm/exec.h
Move arch_align_stack() here. Other process execution related bits
could perhaps go here from asm/processor.h.
(4) asm/cmpxchg.h
Move xchg() and cmpxchg() here as they're full word atomic ops and
frequently used by atomic_xchg() and atomic_cmpxchg().
(5) asm/bug.h
Move die() and related bits.
(6) asm/auxvec.h
Move AT_VECTOR_SIZE_ARCH here.
Other arch headers are created as needed on a per-arch basis."
Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that. We'll find out anything that got broken and fix it..
* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
Delete all instances of asm/system.h
Remove all #inclusions of asm/system.h
Add #includes needed to permit the removal of asm/system.h
Move all declarations of free_initmem() to linux/mm.h
Disintegrate asm/system.h for OpenRISC
Split arch_align_stack() out from asm-generic/system.h
Split the switch_to() wrapper out of asm-generic/system.h
Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
Create asm-generic/barrier.h
Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
Disintegrate asm/system.h for Xtensa
Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
Disintegrate asm/system.h for Tile
Disintegrate asm/system.h for Sparc
Disintegrate asm/system.h for SH
Disintegrate asm/system.h for Score
Disintegrate asm/system.h for S390
Disintegrate asm/system.h for PowerPC
Disintegrate asm/system.h for PA-RISC
Disintegrate asm/system.h for MN10300
...
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_SETUP_H
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#define _ASM_MICROBLAZE_SETUP_H
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#define COMMAND_LINE_SIZE 256
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# ifndef __ASSEMBLY__
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# ifdef __KERNEL__
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extern unsigned int boot_cpuid; /* move to smp.h */
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extern char cmd_line[COMMAND_LINE_SIZE];
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extern char *klimit;
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void early_printk(const char *fmt, ...);
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int setup_early_printk(char *opt);
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void remap_early_printk(void);
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void disable_early_printk(void);
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void heartbeat(void);
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void setup_heartbeat(void);
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# ifdef CONFIG_MMU
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extern void mmu_reset(void);
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extern void early_console_reg_tlb_alloc(unsigned int addr);
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# endif /* CONFIG_MMU */
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extern void of_platform_reset_gpio_probe(void);
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void time_init(void);
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void init_IRQ(void);
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void machine_early_init(const char *cmdline, unsigned int ram,
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unsigned int fdt, unsigned int msr, unsigned int tlb0,
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unsigned int tlb1);
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void machine_restart(char *cmd);
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void machine_shutdown(void);
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void machine_halt(void);
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void machine_power_off(void);
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void free_init_pages(char *what, unsigned long begin, unsigned long end);
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extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
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extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
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# endif/* __KERNEL__ */
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# endif /* __ASSEMBLY__ */
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#endif /* _ASM_MICROBLAZE_SETUP_H */
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