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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-31 18:08:47 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-03 19:15:39 +0100 |
| commit | ee943a82b697456f9d2ac46f1e6d230beedb4b6c (patch) | |
| tree | 33f83cff3d05f5189dc752d98b9ec157f0b75ad5 | |
| parent | 9628937d5b37169151c5f6bbd40919c6ac958a46 (diff) | |
| download | linux-ee943a82b697456f9d2ac46f1e6d230beedb4b6c.tar.gz linux-ee943a82b697456f9d2ac46f1e6d230beedb4b6c.tar.bz2 linux-ee943a82b697456f9d2ac46f1e6d230beedb4b6c.zip | |
x86: use cpumask_var_t in acpi/boot.c
Impact: reduce stack size, use new API.
Replace cpumask_t with cpumask_var_t.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index fd24c55e4ae2..29dc0c89d4af 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -538,9 +538,10 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; struct acpi_madt_local_apic *lapic; - cpumask_t tmp_map, new_map; + cpumask_var_t tmp_map, new_map; u8 physid; int cpu; + int retval = -ENOMEM; if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) return -EINVAL; @@ -569,23 +570,37 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) buffer.length = ACPI_ALLOCATE_BUFFER; buffer.pointer = NULL; - tmp_map = cpu_present_map; + if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) + goto out; + + if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) + goto free_tmp_map; + + cpumask_copy(tmp_map, cpu_present_mask); acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); /* * If mp_register_lapic successfully generates a new logical cpu * number, then the following will get us exactly what was mapped */ - cpus_andnot(new_map, cpu_present_map, tmp_map); - if (cpus_empty(new_map)) { + cpumask_andnot(new_map, cpu_present_mask, tmp_map); + if (cpumask_empty(new_map)) { printk ("Unable to map lapic to logical cpu number\n"); - return -EINVAL; + retval = -EINVAL; + goto free_new_map; } - cpu = first_cpu(new_map); + cpu = cpumask_first(new_map); *pcpu = cpu; - return 0; + retval = 0; + +free_new_map: + free_cpumask_var(new_map); +free_tmp_map: + free_cpumask_var(tmp_map); +out: + return retval; } /* wrapper to silence section mismatch warning */ |