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Commit 47613407 authored by Hamish Martin's avatar Hamish Martin Committed by Michael Ellerman
Browse files

powerpc: Move THREAD_SHIFT config to Kconfig 



Shift the logic for defining THREAD_SHIFT logic to Kconfig in order to
allow override by users.

Signed-off-by: default avatarHamish Martin <hamish.martin@alliedtelesis.co.nz>
Reviewed-by: default avatarChris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 97da3854

arch/powerpc/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -678,6 +678,16 @@ config PPC_256K_PAGES 


endchoice



config THREAD_SHIFT

	int "Thread shift" if EXPERT

	range 13 15

	default "15" if PPC_256K_PAGES

	default "14" if PPC64

	default "13"

	help

	  Used to define the stack size. The default is almost always what you

	  want. Only change this if you know what you are doing.



config FORCE_MAX_ZONEORDER

	int "Maximum zone order"

	range 8 9 if PPC64 && PPC_64K_PAGES

arch/powerpc/include/asm/thread_info.h

+1 −9
Original line number Diff line number Diff line
@@ -10,15 +10,7 @@ 


#ifdef __KERNEL__



/* We have 8k stacks on ppc32 and 16k on ppc64 */



#if defined(CONFIG_PPC64)

#define THREAD_SHIFT		14

#elif defined(CONFIG_PPC_256K_PAGES)

#define THREAD_SHIFT		15

#else

#define THREAD_SHIFT		13

#endif

#define THREAD_SHIFT		CONFIG_THREAD_SHIFT



#define THREAD_SIZE		(1 << THREAD_SHIFT)