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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, numa: Fix cpu nodemasks for NUMA emulation and CONFIG_DEBUG_PER_CPU_MAPS
  Revert "x86, NUMA: Fix fakenuma boot failure"
This commit is contained in:
Linus Torvalds 2011-04-21 10:01:03 -07:00
commit d20dc4d523
4 changed files with 24 additions and 60 deletions
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2
arch/x86/include/asm/numa.h
View file

@ -51,7 +51,7 @@ static inline void numa_remove_cpu(int cpu) { }
#endif /* CONFIG_NUMA */
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
struct cpumask __cpuinit *debug_cpumask_set_cpu(int cpu, int enable);
void debug_cpumask_set_cpu(int cpu, int node, bool enable);
#endif
#endif /* _ASM_X86_NUMA_H */

23
arch/x86/kernel/smpboot.c
View file

@ -312,26 +312,6 @@ void __cpuinit smp_store_cpu_info(int id)
identify_secondary_cpu(c);
}
static void __cpuinit check_cpu_siblings_on_same_node(int cpu1, int cpu2)
{
int node1 = early_cpu_to_node(cpu1);
int node2 = early_cpu_to_node(cpu2);
/*
* Our CPU scheduler assumes all logical cpus in the same physical cpu
* share the same node. But, buggy ACPI or NUMA emulation might assign
* them to different node. Fix it.
*/
if (node1 != node2) {
pr_warning("CPU %d in node %d and CPU %d in node %d are in the same physical CPU. forcing same node %d\n",
cpu1, node1, cpu2, node2, node2);
numa_remove_cpu(cpu1);
numa_set_node(cpu1, node2);
numa_add_cpu(cpu1);
}
}
static void __cpuinit link_thread_siblings(int cpu1, int cpu2)
{
cpumask_set_cpu(cpu1, cpu_sibling_mask(cpu2));
@ -340,7 +320,6 @@ static void __cpuinit link_thread_siblings(int cpu1, int cpu2)
cpumask_set_cpu(cpu2, cpu_core_mask(cpu1));
cpumask_set_cpu(cpu1, cpu_llc_shared_mask(cpu2));
cpumask_set_cpu(cpu2, cpu_llc_shared_mask(cpu1));
check_cpu_siblings_on_same_node(cpu1, cpu2);
}
@ -382,12 +361,10 @@ void __cpuinit set_cpu_sibling_map(int cpu)
per_cpu(cpu_llc_id, cpu) == per_cpu(cpu_llc_id, i)) {
cpumask_set_cpu(i, cpu_llc_shared_mask(cpu));
cpumask_set_cpu(cpu, cpu_llc_shared_mask(i));
check_cpu_siblings_on_same_node(cpu, i);
}
if (c->phys_proc_id == cpu_data(i).phys_proc_id) {
cpumask_set_cpu(i, cpu_core_mask(cpu));
cpumask_set_cpu(cpu, cpu_core_mask(i));
check_cpu_siblings_on_same_node(cpu, i);
/*
* Does this new cpu bringup a new core?
*/

39
arch/x86/mm/numa.c
View file

@ -213,53 +213,48 @@ int early_cpu_to_node(int cpu)
return per_cpu(x86_cpu_to_node_map, cpu);
}
struct cpumask __cpuinit *debug_cpumask_set_cpu(int cpu, int enable)
void debug_cpumask_set_cpu(int cpu, int node, bool enable)
{
int node = early_cpu_to_node(cpu);
struct cpumask *mask;
char buf[64];
if (node == NUMA_NO_NODE) {
/* early_cpu_to_node() already emits a warning and trace */
return NULL;
return;
}
mask = node_to_cpumask_map[node];
if (!mask) {
pr_err("node_to_cpumask_map[%i] NULL\n", node);
dump_stack();
return NULL;
}
cpulist_scnprintf(buf, sizeof(buf), mask);
printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n",
enable ? "numa_add_cpu" : "numa_remove_cpu",
cpu, node, buf);
return mask;
}
# ifndef CONFIG_NUMA_EMU
static void __cpuinit numa_set_cpumask(int cpu, int enable)
{
struct cpumask *mask;
mask = debug_cpumask_set_cpu(cpu, enable);
if (!mask)
return;
}
if (enable)
cpumask_set_cpu(cpu, mask);
else
cpumask_clear_cpu(cpu, mask);
cpulist_scnprintf(buf, sizeof(buf), mask);
printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n",
enable ? "numa_add_cpu" : "numa_remove_cpu",
cpu, node, buf);
return;
}
# ifndef CONFIG_NUMA_EMU
static void __cpuinit numa_set_cpumask(int cpu, bool enable)
{
debug_cpumask_set_cpu(cpu, early_cpu_to_node(cpu), enable);
}
void __cpuinit numa_add_cpu(int cpu)
{
numa_set_cpumask(cpu, 1);
numa_set_cpumask(cpu, true);
}
void __cpuinit numa_remove_cpu(int cpu)
{
numa_set_cpumask(cpu, 0);
numa_set_cpumask(cpu, false);
}
# endif /* !CONFIG_NUMA_EMU */

20
arch/x86/mm/numa_emulation.c
View file

@ -454,10 +454,9 @@ void __cpuinit numa_remove_cpu(int cpu)
cpumask_clear_cpu(cpu, node_to_cpumask_map[i]);
}
#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
static void __cpuinit numa_set_cpumask(int cpu, int enable)
static void __cpuinit numa_set_cpumask(int cpu, bool enable)
{
struct cpumask *mask;
int nid, physnid, i;
int nid, physnid;
nid = early_cpu_to_node(cpu);
if (nid == NUMA_NO_NODE) {
@ -467,28 +466,21 @@ static void __cpuinit numa_set_cpumask(int cpu, int enable)
physnid = emu_nid_to_phys[nid];
for_each_online_node(i) {
for_each_online_node(nid) {
if (emu_nid_to_phys[nid] != physnid)
continue;
mask = debug_cpumask_set_cpu(cpu, enable);
if (!mask)
return;
if (enable)
cpumask_set_cpu(cpu, mask);
else
cpumask_clear_cpu(cpu, mask);
debug_cpumask_set_cpu(cpu, nid, enable);
}
}
void __cpuinit numa_add_cpu(int cpu)
{
numa_set_cpumask(cpu, 1);
numa_set_cpumask(cpu, true);
}
void __cpuinit numa_remove_cpu(int cpu)
{
numa_set_cpumask(cpu, 0);
numa_set_cpumask(cpu, false);
}
#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */