forked from luck/tmp_suning_uos_patched
d624716b6c
Individual scheduler domain should consist different hierarchy consisting of cores sharing similar property. Currently, no scheduler domain is defined separately for the cores that shares the last level cache. As a result, the scheduler fails to take advantage of cache locality while migrating tasks during load balancing. Here are the cpu masks currently present for sparc that are/can be used in scheduler domain construction. cpu_core_map : set based on the cores that shares l1 cache. core_core_sib_map : is set based on the socket id. The prior SPARC notion of socket was defined as highest level of shared cache. However, the MD record on T7 platforms now describes the CPUs that share the physical socket and this is no longer tied to shared cache. That's why a separate cpu mask needs to be created that truly represent highest level of shared cache for all platforms. Signed-off-by: Atish Patra <atish.patra@oracle.com> Reviewed-by: Chris Hyser <chris.hyser@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/* cpudata.h: Per-cpu parameters.
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*
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* Copyright (C) 2003, 2005, 2006 David S. Miller (davem@davemloft.net)
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*/
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#ifndef _SPARC64_CPUDATA_H
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#define _SPARC64_CPUDATA_H
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#ifndef __ASSEMBLY__
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typedef struct {
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/* Dcache line 1 */
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unsigned int __softirq_pending; /* must be 1st, see rtrap.S */
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unsigned int __nmi_count;
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unsigned long clock_tick; /* %tick's per second */
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unsigned long __pad;
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unsigned int irq0_irqs;
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unsigned int __pad2;
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/* Dcache line 2, rarely used */
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unsigned int dcache_size;
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unsigned int dcache_line_size;
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unsigned int icache_size;
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unsigned int icache_line_size;
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unsigned int ecache_size;
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unsigned int ecache_line_size;
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unsigned short sock_id; /* physical package */
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unsigned short core_id;
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unsigned short max_cache_id; /* groupings of highest shared cache */
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unsigned short proc_id; /* strand (aka HW thread) id */
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} cpuinfo_sparc;
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DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
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#define cpu_data(__cpu) per_cpu(__cpu_data, (__cpu))
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#define local_cpu_data() (*this_cpu_ptr(&__cpu_data))
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#endif /* !(__ASSEMBLY__) */
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#include <asm/trap_block.h>
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#endif /* _SPARC64_CPUDATA_H */
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