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x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files

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Indicate to UV user utilities that UV hubless support is available on
this system via the existing /proc infterface.  The current interface is
maintained with the addition of new /proc leaves ("hubbed", "hubless",
and "oemid") that contain the specific type of UV arch this one is.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hedi Berriche <hedi.berriche@hpe.com>
Cc: Justin Ernst <justin.ernst@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190910145840.055590900@stormcage.eag.rdlabs.hpecorp.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Mike Travis
2019-09-10 09:58:44 -05:00
committed by Ingo Molnar
parent 2bcf265287
commit 8785968bce
2 changed files with 96 additions and 1 deletions
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4
arch/x86/include/asm/uv/uv.h
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@@ -12,6 +12,8 @@ struct mm_struct;
#ifdef CONFIG_X86_UV
#include <linux/efi.h>
#define UV_PROC_NODE "sgi_uv"
static inline int uv(int uvtype)
{
/* uv(0) is "any" */
@@ -28,6 +30,7 @@ static inline bool is_early_uv_system(void)
return uv_systab_phys && uv_systab_phys != EFI_INVALID_TABLE_ADDR;
}
extern int is_uv_system(void);
extern int is_uv_hubbed(int uvtype);
extern int is_uv_hubless(int uvtype);
extern void uv_cpu_init(void);
extern void uv_nmi_init(void);
@@ -40,6 +43,7 @@ extern const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; }
static inline bool is_early_uv_system(void) { return 0; }
static inline int is_uv_system(void) { return 0; }
static inline int is_uv_hubbed(int uv) { return 0; }
static inline int is_uv_hubless(int uv) { return 0; }
static inline void uv_cpu_init(void) { }
static inline void uv_system_init(void) { }