sections: disable const sections for PA-RISC v2
The PA-RISC tool chain seems to have some problem with correct read/write attributes on sections. This causes problems when the const sections are fixed up for other architecture to only contain truly read-only data. Disable const sections for PA-RISC This can cause a bit of noise with modpost. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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3 changed files with 26 additions and 8 deletions
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@ -13,6 +13,7 @@ config PARISC
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select HAVE_PERF_EVENTS
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select HAVE_PERF_EVENTS
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select GENERIC_ATOMIC64 if !64BIT
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select GENERIC_ATOMIC64 if !64BIT
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select HAVE_GENERIC_HARDIRQS
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select HAVE_GENERIC_HARDIRQS
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select BROKEN_RODATA
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_PROBE
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select GENERIC_PCI_IOMAP
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select GENERIC_PCI_IOMAP
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select IRQ_PER_CPU
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select IRQ_PER_CPU
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@ -43,10 +43,21 @@
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discard it in modules) */
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discard it in modules) */
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#define __init __section(.init.text) __cold notrace
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#define __init __section(.init.text) __cold notrace
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#define __initdata __section(.init.data)
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#define __initdata __section(.init.data)
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#define __initconst __section(.init.rodata)
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#define __initconst __constsection(.init.rodata)
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#define __exitdata __section(.exit.data)
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#define __exitdata __section(.exit.data)
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#define __exit_call __used __section(.exitcall.exit)
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#define __exit_call __used __section(.exitcall.exit)
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/*
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* Some architecture have tool chains which do not handle rodata attributes
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* correctly. For those disable special sections for const, so that other
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* architectures can annotate correctly.
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*/
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#ifdef CONFIG_BROKEN_RODATA
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#define __constsection(x)
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#else
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#define __constsection(x) __section(x)
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#endif
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/*
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/*
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* modpost check for section mismatches during the kernel build.
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* modpost check for section mismatches during the kernel build.
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* A section mismatch happens when there are references from a
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* A section mismatch happens when there are references from a
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@ -66,7 +77,7 @@
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*/
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*/
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#define __ref __section(.ref.text) noinline
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#define __ref __section(.ref.text) noinline
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#define __refdata __section(.ref.data)
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#define __refdata __section(.ref.data)
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#define __refconst __section(.ref.rodata)
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#define __refconst __constsection(.ref.rodata)
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/* compatibility defines */
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/* compatibility defines */
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#define __init_refok __ref
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#define __init_refok __ref
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@ -85,26 +96,26 @@
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/* Used for HOTPLUG */
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/* Used for HOTPLUG */
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#define __devinit __section(.devinit.text) __cold notrace
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#define __devinit __section(.devinit.text) __cold notrace
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#define __devinitdata __section(.devinit.data)
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#define __devinitdata __section(.devinit.data)
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#define __devinitconst __section(.devinit.rodata)
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#define __devinitconst __constsection(.devinit.rodata)
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#define __devexit __section(.devexit.text) __exitused __cold notrace
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#define __devexit __section(.devexit.text) __exitused __cold notrace
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#define __devexitdata __section(.devexit.data)
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#define __devexitdata __section(.devexit.data)
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#define __devexitconst __section(.devexit.rodata)
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#define __devexitconst __constsection(.devexit.rodata)
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/* Used for HOTPLUG_CPU */
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/* Used for HOTPLUG_CPU */
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#define __cpuinit __section(.cpuinit.text) __cold notrace
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#define __cpuinit __section(.cpuinit.text) __cold notrace
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#define __cpuinitdata __section(.cpuinit.data)
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#define __cpuinitdata __section(.cpuinit.data)
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#define __cpuinitconst __section(.cpuinit.rodata)
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#define __cpuinitconst __constsection(.cpuinit.rodata)
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#define __cpuexit __section(.cpuexit.text) __exitused __cold notrace
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#define __cpuexit __section(.cpuexit.text) __exitused __cold notrace
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#define __cpuexitdata __section(.cpuexit.data)
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#define __cpuexitdata __section(.cpuexit.data)
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#define __cpuexitconst __section(.cpuexit.rodata)
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#define __cpuexitconst __constsection(.cpuexit.rodata)
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/* Used for MEMORY_HOTPLUG */
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/* Used for MEMORY_HOTPLUG */
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#define __meminit __section(.meminit.text) __cold notrace
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#define __meminit __section(.meminit.text) __cold notrace
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#define __meminitdata __section(.meminit.data)
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#define __meminitdata __section(.meminit.data)
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#define __meminitconst __section(.meminit.rodata)
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#define __meminitconst __constsection(.meminit.rodata)
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#define __memexit __section(.memexit.text) __exitused __cold notrace
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#define __memexit __section(.memexit.text) __exitused __cold notrace
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#define __memexitdata __section(.memexit.data)
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#define __memexitdata __section(.memexit.data)
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#define __memexitconst __section(.memexit.rodata)
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#define __memexitconst __constsection(.memexit.rodata)
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/* For assembly routines */
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/* For assembly routines */
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#define __HEAD .section ".head.text","ax"
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#define __HEAD .section ".head.text","ax"
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@ -1581,4 +1581,10 @@ config PADATA
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depends on SMP
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depends on SMP
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bool
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bool
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# Can be selected by architectures with broken toolchains
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# that get confused by correct const<->read_only section
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# mappings
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config BROKEN_RODATA
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bool
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source "kernel/Kconfig.locks"
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source "kernel/Kconfig.locks"
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