39297dde73
The Broadcast Assist Unit (BAU) TLB shootdown handler is being rewritten to become the UV BAU APIC driver. It is designed to speed up sending IPIs to selective CPUs within the system. Remove the current TLB shutdown handler (tlb_uv.c) file and a couple of kernel hooks in the interim. Signed-off-by: Mike Travis <mike.travis@hpe.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com> Link: https://lkml.kernel.org/r/20201005203929.148656-2-mike.travis@hpe.com
55 lines
1.3 KiB
C
55 lines
1.3 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};
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struct cpumask;
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struct mm_struct;
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struct flush_tlb_info;
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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 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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#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 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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