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148f9bb877
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
are flagged as __cpuinit -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
content into no-ops as early as possible, since that will get rid
of these warnings. In any case, they are temporary and harmless.
This removes all the arch/x86 uses of the __cpuinit macros from
all C files. x86 only had the one __CPUINIT used in assembly files,
and it wasn't paired off with a .previous or a __FINIT, so we can
delete it directly w/o any corresponding additional change there.
[1] https://lkml.org/lkml/2013/5/20/589
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
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* Definitions for Device tree / OpenFirmware handling on X86
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*
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* based on arch/powerpc/include/asm/prom.h which is
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_X86_PROM_H
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#define _ASM_X86_PROM_H
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#ifndef __ASSEMBLY__
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#include <linux/of.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <asm/irq.h>
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#include <linux/atomic.h>
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#include <asm/setup.h>
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#ifdef CONFIG_OF
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extern int of_ioapic;
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extern u64 initial_dtb;
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extern void add_dtb(u64 data);
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extern void x86_add_irq_domains(void);
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void x86_of_pci_init(void);
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void x86_dtb_init(void);
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#else
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static inline void add_dtb(u64 data) { }
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static inline void x86_add_irq_domains(void) { }
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static inline void x86_of_pci_init(void) { }
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static inline void x86_dtb_init(void) { }
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#define of_ioapic 0
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#endif
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extern char cmd_line[COMMAND_LINE_SIZE];
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#define pci_address_to_pio pci_address_to_pio
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unsigned long pci_address_to_pio(phys_addr_t addr);
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#define HAVE_ARCH_DEVTREE_FIXUPS
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#endif /* __ASSEMBLY__ */
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#endif
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