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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix build with SPARSEMEM_VMEMMAP disabled.
  [SPARC]: Make gettimeofday() monotonic again.
hifive-unleashed-5.1
Linus Torvalds 2008-01-15 08:07:03 -08:00
parent 612166c76d bf4a7972d6
commit 8234b65afa
2 changed files with 13 additions and 2 deletions
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9
arch/sparc/kernel/time.c
View File

@ -436,7 +436,14 @@ void __init time_init(void)
static inline unsigned long do_gettimeoffset(void)
{
return (*master_l10_counter >> 10) & 0x1fffff;
unsigned long val = *master_l10_counter;
unsigned long usec = (val >> 10) & 0x1fffff;
/* Limit hit? */
if (val & 0x80000000)
usec += 1000000 / HZ;
return usec;
}
/* Ok, my cute asm atomicity trick doesn't work anymore.

6
arch/sparc64/kernel/ktlb.S
View File

@ -1,6 +1,6 @@
/* arch/sparc64/kernel/ktlb.S: Kernel mapping TLB miss handling.
*
* Copyright (C) 1995, 1997, 2005 David S. Miller <davem@davemloft.net>
* Copyright (C) 1995, 1997, 2005, 2008 David S. Miller <davem@davemloft.net>
* Copyright (C) 1996 Eddie C. Dost (ecd@brainaid.de)
* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1996,98,99 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
@ -226,6 +226,7 @@ kvmap_dtlb_load:
ba,pt %xcc, sun4v_dtlb_load
mov %g5, %g3
#ifdef CONFIG_SPARSEMEM_VMEMMAP
kvmap_vmemmap:
sub %g4, %g5, %g5
srlx %g5, 22, %g5
@ -234,6 +235,7 @@ kvmap_vmemmap:
or %g1, %lo(vmemmap_table), %g1
ba,pt %xcc, kvmap_dtlb_load
ldx [%g1 + %g5], %g5
#endif
kvmap_dtlb_nonlinear:
/* Catch kernel NULL pointer derefs. */
@ -242,12 +244,14 @@ kvmap_dtlb_nonlinear:
bleu,pn %xcc, kvmap_dtlb_longpath
nop
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/* Do not use the TSB for vmemmap. */
mov (VMEMMAP_BASE >> 24), %g5
sllx %g5, 24, %g5
cmp %g4,%g5
bgeu,pn %xcc, kvmap_vmemmap
nop
#endif
KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)