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e7986739a7
Impact: cleanup, change parameter passing
* Change genapic interfaces to accept cpumask_t pointers where possible.
* Modify external callers to use cpumask_t pointers in function calls.
* Create new send_IPI_mask_allbutself which is the same as the
send_IPI_mask functions but removes smp_processor_id() from list.
This removes another common need for a temporary cpumask_t variable.
* Functions that used a temp cpumask_t variable for:
cpumask_t allbutme = cpu_online_map;
cpu_clear(smp_processor_id(), allbutme);
if (!cpus_empty(allbutme))
...
become:
if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
...
* Other minor code optimizations (like using cpus_clear instead of
CPU_MASK_NONE, etc.)
Applies to linux-2.6.tip/master.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/*
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* APIC driver for the IBM NUMAQ chipset.
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*/
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#define APIC_DEFINITION 1
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/genapic.h>
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#include <asm/fixmap.h>
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#include <asm/apicdef.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <asm/numaq/apicdef.h>
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#include <linux/smp.h>
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#include <asm/numaq/apic.h>
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#include <asm/numaq/ipi.h>
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#include <asm/numaq/mpparse.h>
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#include <asm/numaq/wakecpu.h>
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#include <asm/numaq.h>
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static int mps_oem_check(struct mp_config_table *mpc, char *oem,
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char *productid)
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{
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numaq_mps_oem_check(mpc, oem, productid);
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return found_numaq;
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}
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static int probe_numaq(void)
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{
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/* already know from get_memcfg_numaq() */
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return found_numaq;
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}
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/* Hook from generic ACPI tables.c */
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static int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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return 0;
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}
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static void vector_allocation_domain(int cpu, cpumask_t *retmask)
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{
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/* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
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}
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struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);
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