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8785968bce
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>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_UV_UV_H
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#define _ASM_X86_UV_UV_H
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#include <asm/tlbflush.h>
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enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC, UV_NON_UNIQUE_APIC};
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struct cpumask;
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struct mm_struct;
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#ifdef CONFIG_X86_UV
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#include <linux/efi.h>
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#define UV_PROC_NODE "sgi_uv"
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static inline int uv(int uvtype)
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{
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/* uv(0) is "any" */
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if (uvtype >= 0 && uvtype <= 30)
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return 1 << uvtype;
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return 1;
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}
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extern unsigned long uv_systab_phys;
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extern enum uv_system_type get_uv_system_type(void);
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static inline bool is_early_uv_system(void)
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{
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return uv_systab_phys && uv_systab_phys != EFI_INVALID_TABLE_ADDR;
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}
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extern int is_uv_system(void);
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extern int is_uv_hubbed(int uvtype);
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extern int is_uv_hubless(int uvtype);
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extern void uv_cpu_init(void);
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extern void uv_nmi_init(void);
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extern void uv_system_init(void);
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extern const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
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const struct flush_tlb_info *info);
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#else /* X86_UV */
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static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; }
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static inline bool is_early_uv_system(void) { return 0; }
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static inline int is_uv_system(void) { return 0; }
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static inline int is_uv_hubbed(int uv) { return 0; }
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static inline int is_uv_hubless(int uv) { return 0; }
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static inline void uv_cpu_init(void) { }
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static inline void uv_system_init(void) { }
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static inline const struct cpumask *
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uv_flush_tlb_others(const struct cpumask *cpumask,
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const struct flush_tlb_info *info)
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{ return cpumask; }
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#endif /* X86_UV */
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#endif /* _ASM_X86_UV_UV_H */
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