Messages in this thread Patch in this message | | | Date | Thu, 5 Nov 2015 06:43:13 -0800 | From | tip-bot for Linus Torvalds <> | Subject | [tip:x86/apic] x86/apic: Implement single target IPI function for x2apic_cluster |
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Commit-ID: 7b6ce46cb3d096831dea3accacee4717c66abac8 Gitweb: http://git.kernel.org/tip/7b6ce46cb3d096831dea3accacee4717c66abac8 Author: Linus Torvalds <torvalds@linux-foundation.org> AuthorDate: Wed, 4 Nov 2015 22:57:00 +0000 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Thu, 5 Nov 2015 13:07:52 +0100
x86/apic: Implement single target IPI function for x2apic_cluster
[ tglx: Split it out from the patch which provides the new callback ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Travis <travis@sgi.com> Cc: Daniel J Blueman <daniel@numascale.com> Link: http://lkml.kernel.org/r/20151104220848.817975597@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/x86/kernel/apic/x2apic_cluster.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index cc8311c..aca8b75 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -23,6 +23,14 @@ static inline u32 x2apic_cluster(int cpu) return per_cpu(x86_cpu_to_logical_apicid, cpu) >> 16; } +static void x2apic_send_IPI(int cpu, int vector) +{ + u32 dest = per_cpu(x86_cpu_to_logical_apicid, cpu); + + x2apic_wrmsr_fence(); + __x2apic_send_IPI_dest(dest, vector, APIC_DEST_LOGICAL); +} + static void __x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest) { @@ -266,6 +274,7 @@ static struct apic apic_x2apic_cluster = { .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and, + .send_IPI = x2apic_send_IPI, .send_IPI_mask = x2apic_send_IPI_mask, .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself, .send_IPI_allbutself = x2apic_send_IPI_allbutself,
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