summaryrefslogtreecommitdiff
path: root/arch/x86/platform
diff options
context:
space:
mode:
authorCliff Wickman <cpw@sgi.com>2012-01-16 15:18:48 -0600
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-25 16:13:53 -0800
commit5869dc3cc783cea391d787832f2b925e5c5159c0 (patch)
treedb4e15c8f886cb123d54be83a92529311cd23b54 /arch/x86/platform
parent40434094065aaa6ec566725be43f0da70ab56172 (diff)
x86/UV2: Fix BAU destination timeout initialization
commit d059f9fa84a30e04279c6ff615e9e2cf3b260191 upstream. 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 <cpw@sgi.com> Link: http://lkml.kernel.org/r/20120116211848.GB5767@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/platform')
-rw-r--r--arch/x86/platform/uv/tlb_uv.c13
1 files 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) {