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| author | Hamish Martin <hamish.martin@alliedtelesis.co.nz> | 2017-02-24 13:52:09 +1300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-03-20 19:02:49 +1100 |
| commit | 476134070c037820bd909ff6e43e0d3eae33f376 (patch) | |
| tree | 0c53d520499d625a8e37999866fce33284e25894 /arch | |
| parent | 97da3854c526d3a6ee05c849c96e48d21527606c (diff) | |
| download | talos-obmc-linux-476134070c037820bd909ff6e43e0d3eae33f376.tar.gz talos-obmc-linux-476134070c037820bd909ff6e43e0d3eae33f376.zip | |
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: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/Kconfig | 10 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/thread_info.h | 10 |
2 files changed, 11 insertions, 9 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 97a8bc8a095c..45724923a69c 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -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 diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 87e4b2d8dcd4..2e17d668c472 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -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) |
