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authorIngo Molnar <mingo@elte.hu>2008-07-06 08:23:39 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-06 08:23:39 -0400
commit68083e05d72d94f347293d8cc0067050ba904bfa (patch)
tree842e71365bd90866be7add181661a4039d891564 /arch/x86/mm/srat_64.c
parent7baac8b91f9871ba8cb09af84de4ae1d86d07812 (diff)
parentb7279469d66b55119784b8b9529c99c1955fe747 (diff)
Merge commit 'v2.6.26-rc9' into cpus4096
Diffstat (limited to 'arch/x86/mm/srat_64.c')
-rw-r--r--arch/x86/mm/srat_64.c27
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 3890234e5b26..99649dccad28 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -97,36 +97,9 @@ static __init inline int srat_disabled(void)
97 return numa_off || acpi_numa < 0; 97 return numa_off || acpi_numa < 0;
98} 98}
99 99
100/*
101 * A lot of BIOS fill in 10 (= no distance) everywhere. This messes
102 * up the NUMA heuristics which wants the local node to have a smaller
103 * distance than the others.
104 * Do some quick checks here and only use the SLIT if it passes.
105 */
106static __init int slit_valid(struct acpi_table_slit *slit)
107{
108 int i, j;
109 int d = slit->locality_count;
110 for (i = 0; i < d; i++) {
111 for (j = 0; j < d; j++) {
112 u8 val = slit->entry[d*i + j];
113 if (i == j) {
114 if (val != LOCAL_DISTANCE)
115 return 0;
116 } else if (val <= LOCAL_DISTANCE)
117 return 0;
118 }
119 }
120 return 1;
121}
122
123/* Callback for SLIT parsing */ 100/* Callback for SLIT parsing */
124void __init acpi_numa_slit_init(struct acpi_table_slit *slit) 101void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
125{ 102{
126 if (!slit_valid(slit)) {
127 printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
128 return;
129 }
130 acpi_slit = slit; 103 acpi_slit = slit;
131} 104}
132 105