From 53be0fac8bdaeec87e0df7d0334345421d2be187 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 4 Nov 2015 22:57:01 +0000 Subject: x86/apic: Implement default single target IPI function apic_physflat and bigsmp_apic can share that implementation. Signed-off-by: Thomas Gleixner Reviewed-by: Ingo Molnar Cc: Linus Torvalds Cc: Borislav Petkov Cc: Peter Zijlstra Cc: Mike Travis Cc: Daniel J Blueman Link: http://lkml.kernel.org/r/20151104220848.898543767@linutronix.de --- arch/x86/kernel/apic/ipi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/x86/kernel/apic/ipi.c') diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c index 62071569bd50..4fcffbf024c9 100644 --- a/arch/x86/kernel/apic/ipi.c +++ b/arch/x86/kernel/apic/ipi.c @@ -18,6 +18,16 @@ #include #include +void default_send_IPI_single_phys(int cpu, int vector) +{ + unsigned long flags; + + local_irq_save(flags); + __default_send_IPI_dest_field(per_cpu(x86_cpu_to_apicid, cpu), + vector, APIC_DEST_PHYSICAL); + local_irq_restore(flags); +} + void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector) { unsigned long query_cpu; -- cgit v1.2.3 From 7e29393b20a1a863a5f9bf48dc71e5cff4035ff5 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 4 Nov 2015 22:57:07 +0000 Subject: x86/apic: Provide default send single IPI wrapper Instead of doing the wrapping in the smp code we can provide a default wrapper for those APICs which insist on cpumasks. Signed-off-by: Thomas Gleixner Reviewed-by: Ingo Molnar Cc: Linus Torvalds Cc: Borislav Petkov Cc: Peter Zijlstra Cc: Mike Travis Cc: Daniel J Blueman Link: http://lkml.kernel.org/r/20151104220849.631111846@linutronix.de --- arch/x86/include/asm/ipi.h | 1 + arch/x86/kernel/apic/ipi.c | 8 ++++++++ 2 files changed, 9 insertions(+) (limited to 'arch/x86/kernel/apic/ipi.c') diff --git a/arch/x86/include/asm/ipi.h b/arch/x86/include/asm/ipi.h index 22998a8f8d28..cfc9a0d2d07c 100644 --- a/arch/x86/include/asm/ipi.h +++ b/arch/x86/include/asm/ipi.h @@ -119,6 +119,7 @@ static inline void native_apic_mem_write(APIC_ICR, cfg); } +extern void default_send_IPI_single(int cpu, int vector); extern void default_send_IPI_single_phys(int cpu, int vector); extern void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector); diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c index 4fcffbf024c9..eb45fc9b6124 100644 --- a/arch/x86/kernel/apic/ipi.c +++ b/arch/x86/kernel/apic/ipi.c @@ -65,6 +65,14 @@ void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask, local_irq_restore(flags); } +/* + * Helper function for APICs which insist on cpumasks + */ +void default_send_IPI_single(int cpu, int vector) +{ + apic->send_IPI_mask(cpumask_of(cpu), vector); +} + #ifdef CONFIG_X86_32 void default_send_IPI_mask_sequence_logical(const struct cpumask *mask, -- cgit v1.2.3