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| author | Mike Travis <travis@sgi.com> | 2016-04-29 23:54:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-05-04 08:48:47 +0200 |
| commit | e0ee1c97c3b1cabc3651d7bcf39c1f54d736fd20 (patch) | |
| tree | 7803a218e0a1cb908a6777583666ec478273f672 | |
| parent | x86/platform/UV: Add Initial UV4 definitions (diff) | |
| download | linux-e0ee1c97c3b1cabc3651d7bcf39c1f54d736fd20.tar.xz linux-e0ee1c97c3b1cabc3651d7bcf39c1f54d736fd20.zip | |
x86/platform/UV: Add UV Architecture Defines
Add defines to control which UV architectures are supported, and modify the
'if (is_uvX_*)' functions to return constant 0 for those not supported.
This will help optimize code paths when support for specific UV arches
is removed.
Tested-by: John Estabrook <estabrook@sgi.com>
Tested-by: Gary Kroening <gfk@sgi.com>
Tested-by: Nathan Zimmer <nzimmer@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <rja@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160429215402.897143440@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/include/asm/uv/uv_hub.h | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h index 38166ade0ca1..6660c09af3f8 100644 --- a/arch/x86/include/asm/uv/uv_hub.h +++ b/arch/x86/include/asm/uv/uv_hub.h @@ -178,22 +178,43 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info); #define UV3_HUB_REVISION_BASE 5 #define UV4_HUB_REVISION_BASE 7 +#ifdef UV1_HUB_IS_SUPPORTED static inline int is_uv1_hub(void) { return uv_hub_info->hub_revision < UV2_HUB_REVISION_BASE; } +#else +static inline int is_uv1_hub(void) +{ + return 0; +} +#endif +#ifdef UV2_HUB_IS_SUPPORTED static inline int is_uv2_hub(void) { return ((uv_hub_info->hub_revision >= UV2_HUB_REVISION_BASE) && (uv_hub_info->hub_revision < UV3_HUB_REVISION_BASE)); } +#else +static inline int is_uv2_hub(void) +{ + return 0; +} +#endif +#ifdef UV3_HUB_IS_SUPPORTED static inline int is_uv3_hub(void) { return ((uv_hub_info->hub_revision >= UV3_HUB_REVISION_BASE) && (uv_hub_info->hub_revision < UV4_HUB_REVISION_BASE)); } +#else +static inline int is_uv3_hub(void) +{ + return 0; +} +#endif #ifdef UV4_HUB_IS_SUPPORTED static inline int is_uv4_hub(void) @@ -207,15 +228,20 @@ static inline int is_uv4_hub(void) } #endif -static inline int is_uv_hub(void) +static inline int is_uvx_hub(void) { - return uv_hub_info->hub_revision; + if (uv_hub_info->hub_revision >= UV2_HUB_REVISION_BASE) + return uv_hub_info->hub_revision; + + return 0; } -/* code common to uv2/3/4 only */ -static inline int is_uvx_hub(void) +static inline int is_uv_hub(void) { - return uv_hub_info->hub_revision >= UV2_HUB_REVISION_BASE; +#ifdef UV1_HUB_IS_SUPPORTED + return uv_hub_info->hub_revision; +#endif + return is_uvx_hub(); } union uvh_apicid { |