From d059f9fa84a30e04279c6ff615e9e2cf3b260191 Mon Sep 17 00:00:00 2001 From: Cliff Wickman Date: Mon, 16 Jan 2012 15:18:48 -0600 Subject: [PATCH] x86/UV2: Fix BAU destination timeout initialization Move the call to enable_timeouts() forward so that BAU_MISC_CONTROL is initialized before using it in calculate_destination_timeout(). Fix the calculation of a BAU destination timeout for UV2 (in calculate_destination_timeout()). Signed-off-by: Cliff Wickman Link: http://lkml.kernel.org/r/20120116211848.GB5767@sgi.com Cc: Signed-off-by: Ingo Molnar --- arch/x86/platform/uv/tlb_uv.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index 1341a2e06542..c425ff1a9cc3 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1617,14 +1617,14 @@ static int calculate_destination_timeout(void) ts_ns = base * mult1 * mult2; ret = ts_ns / 1000; } else { - /* 4 bits 0/1 for 10/80us, 3 bits of multiplier */ - mmr_image = uv_read_local_mmr(UVH_AGING_PRESCALE_SEL); + /* 4 bits 0/1 for 10/80us base, 3 bits of multiplier */ + mmr_image = uv_read_local_mmr(UVH_LB_BAU_MISC_CONTROL); mmr_image = (mmr_image & UV_SA_MASK) >> UV_SA_SHFT; if (mmr_image & (1L << UV2_ACK_UNITS_SHFT)) - mult1 = 80; + base = 80; else - mult1 = 10; - base = mmr_image & UV2_ACK_MASK; + base = 10; + mult1 = mmr_image & UV2_ACK_MASK; ret = mult1 * base; } return ret; @@ -1886,6 +1886,8 @@ static int __init uv_bau_init(void) uv_base_pnode = uv_blade_to_pnode(uvhub); } + enable_timeouts(); + if (init_per_cpu(nuvhubs, uv_base_pnode)) { nobau = 1; return 0; @@ -1896,7 +1898,6 @@ static int __init uv_bau_init(void) if (uv_blade_nr_possible_cpus(uvhub)) init_uvhub(uvhub, vector, uv_base_pnode); - enable_timeouts(); alloc_intr_gate(vector, uv_bau_message_intr1); for_each_possible_blade(uvhub) {