Commit-ID: 88ed9dd7f63c3ae71c1984d99ee2dced0b386dea Gitweb: http://git.kernel.org/tip/88ed9dd7f63c3ae71c1984d99ee2dced0b386dea Author: Cliff Wickman <cpw@xxxxxxx> AuthorDate: Mon, 16 Jan 2012 15:21:46 -0600 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Tue, 17 Jan 2012 09:09:57 +0100 x86/UV2: Ack BAU interrupt earlier This patch moves the ack of the BAU interrupt to the beginning of the interrupt handler so that there is less possibility of a lost interrupt and slower response to a shootdown message. Signed-off-by: Cliff Wickman <cpw@xxxxxxx> Link: http://lkml.kernel.org/r/20120116212146.GE5767@xxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- arch/x86/platform/uv/tlb_uv.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index affea50..4686bf1 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1218,6 +1218,7 @@ void uv_bau_message_interrupt(struct pt_regs *regs) struct ptc_stats *stat; struct msg_desc msgdesc; + ack_APIC_irq(); time_start = get_cycles(); bcp = &per_cpu(bau_control, smp_processor_id()); @@ -1247,8 +1248,6 @@ void uv_bau_message_interrupt(struct pt_regs *regs) stat->d_nomsg++; else if (count > 1) stat->d_multmsg++; - - ack_APIC_irq(); } /* -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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