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sparc64: Store per-cpu offset in trap_block[]

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Surprisingly this actually makes LOAD_PER_CPU_BASE() a little
more efficient.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2009-04-01 01:47:10 -07:00
parent 19f0fa3fb3
commit 5a5488d3bb
5 changed files with 21 additions and 44 deletions
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5
arch/sparc/kernel/traps_64.c
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@@ -2509,6 +2509,7 @@ void do_getpsr(struct pt_regs *regs)
}
struct trap_per_cpu trap_block[NR_CPUS];
EXPORT_SYMBOL(trap_block);
/* This can get invoked before sched_init() so play it super safe
* and use hard_smp_processor_id().
@@ -2592,7 +2593,9 @@ void __init trap_init(void)
(TRAP_PER_CPU_RESUM_QMASK !=
offsetof(struct trap_per_cpu, resum_qmask)) ||
(TRAP_PER_CPU_NONRESUM_QMASK !=
offsetof(struct trap_per_cpu, nonresum_qmask)))
offsetof(struct trap_per_cpu, nonresum_qmask)) ||
(TRAP_PER_CPU_PER_CPU_BASE !=
offsetof(struct trap_per_cpu, __per_cpu_base)))
trap_per_cpu_offsets_are_bolixed_dave();
if ((TSB_CONFIG_TSB !=