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43931d350f
All callers of apic->send_IPI_all() and apic->send_IPI_allbutself() contain the decision logic for shorthand invocation already and invoke send_IPI_mask() if the prereqisites are not satisfied. Implement shorthand support for x2apic. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20190722105221.134696837@linutronix.de
68 lines
2 KiB
C
68 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Historical copyright notices:
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*
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* Copyright 2004 James Cleverdon, IBM.
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* (c) 1995 Alan Cox, Building #3 <alan@redhat.com>
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* (c) 1998-99, 2000 Ingo Molnar <mingo@redhat.com>
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* (c) 2002,2003 Andi Kleen, SuSE Labs.
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*/
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#include <linux/jump_label.h>
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#include <asm/apic.h>
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/* APIC flat 64 */
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void flat_init_apic_ldr(void);
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/* X2APIC */
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int x2apic_apic_id_valid(u32 apicid);
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int x2apic_apic_id_registered(void);
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void __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest);
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unsigned int x2apic_get_apic_id(unsigned long id);
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u32 x2apic_set_apic_id(unsigned int id);
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int x2apic_phys_pkg_id(int initial_apicid, int index_msb);
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void x2apic_send_IPI_self(int vector);
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void __x2apic_send_IPI_shorthand(int vector, u32 which);
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/* IPI */
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DECLARE_STATIC_KEY_FALSE(apic_use_ipi_shorthand);
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static inline unsigned int __prepare_ICR(unsigned int shortcut, int vector,
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unsigned int dest)
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{
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unsigned int icr = shortcut | dest;
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switch (vector) {
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default:
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icr |= APIC_DM_FIXED | vector;
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break;
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case NMI_VECTOR:
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icr |= APIC_DM_NMI;
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break;
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}
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return icr;
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}
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void __default_send_IPI_shortcut(unsigned int shortcut, int vector);
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/*
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* This is used to send an IPI with no shorthand notation (the destination is
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* specified in bits 56 to 63 of the ICR).
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*/
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void __default_send_IPI_dest_field(unsigned int mask, int vector, unsigned int dest);
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void default_send_IPI_single(int cpu, int vector);
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void default_send_IPI_single_phys(int cpu, int vector);
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void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector);
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void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask, int vector);
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void default_send_IPI_allbutself(int vector);
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void default_send_IPI_all(int vector);
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void default_send_IPI_self(int vector);
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#ifdef CONFIG_X86_32
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void default_send_IPI_mask_sequence_logical(const struct cpumask *mask, int vector);
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void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask, int vector);
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void default_send_IPI_mask_logical(const struct cpumask *mask, int vector);
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#endif
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