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[SPARC64]: Refine code sequences to get the cpu id.

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On uniprocessor, it's always zero for optimize that.

On SMP, the jmpl to the stub kills the return address stack in the cpu
branch prediction logic, so expand the code sequence inline and use a
code patching section to fix things up.  This also always better and
explicit register selection, which will be taken advantage of in a
future changeset.

The hard_smp_processor_id() function is big, so do not inline it.

Fix up tests for Jalapeno to also test for Serrano chips too.  These
tests want "jbus Ultra-IIIi" cases to match, so that is what we should
test for.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-26 23:27:19 -08:00
committed by David S. Miller
parent f4e841da30
commit 92704a1c63
9 changed files with 144 additions and 134 deletions
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4
arch/sparc64/kernel/traps.c
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@ -38,6 +38,7 @@
#include <asm/processor.h>
#include <asm/timer.h>
#include <asm/kdebug.h>
#include <asm/head.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
@ -788,7 +789,8 @@ void __init cheetah_ecache_flush_init(void)
cheetah_error_log[i].afsr = CHAFSR_INVALID;
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
if ((ver >> 32) == 0x003e0016) {
if ((ver >> 32) == __JALAPENO_ID ||
(ver >> 32) == __SERRANO_ID) {
cheetah_error_table = &__jalapeno_error_table[0];
cheetah_afsr_errors = JPAFSR_ERRORS;
} else if ((ver >> 32) == 0x003e0015) {