Anton Blanchard
1e92a550e8
[POWERPC] Fix mdelay badness on shared processor partitions ...
On partitioned PPC64 systems where a partition is given 1/10 of a
processor, we have seen mdelay() delaying for 10 times longer than it
should. The reason is that the generic mdelay(n) does n delays of 1
millisecond each. However, with 1/10 of a processor, we only get a
one-millisecond timeslice every 10ms. Thus each 1 millisecond delay
loop ends up taking 10ms elapsed time.
The solution is just to use the PPC64 udelay function, which uses the
timebase to ensure that the delay is based on elapsed time rather than
how much processing time the partition has been given. (Yes, the
generic mdelay uses the PPC64 udelay, but the problem is that the
start time gets reset every millisecond, and each time it gets reset
we lose another 9ms.)
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Andrew Morton <akpm@osdl.org>
2006-06-21 15:01:33 +10:00
[PATCH] alpha: SMP IRQ routing fix
2006-06-05 12:29:16 -07:00
[SERIAL] typo: buad -> baud
2006-06-05 10:45:30 +01:00
[PATCH] unify pfn_to_page: arm26 pfn_to_page
2006-03-27 08:44:44 -08:00
[PATCH] sys_kexec_load() naming fixups
2006-04-11 06:18:42 -07:00
[PATCH] sys_kexec_load() naming fixups
2006-04-11 06:18:42 -07:00
[SPARC64]: Fix D-cache corruption in mremap
2006-06-01 17:47:25 -07:00
[PATCH] sys_kexec_load() naming fixups
2006-04-11 06:18:42 -07:00
[PATCH] x86_64: avoid IRQ0 ioapic pin collision
2006-05-08 09:34:56 -07:00
[IA64] remove asm-ia64/bitops.h self-inclusion
2006-05-05 11:37:15 -07:00
[PATCH] m32r: update switch_to macro for tuning
2006-04-19 09:13:51 -07:00
[PATCH] m68k: fix undefined reference to generic_find_next_zero_le_bit
2006-03-26 08:57:13 -08:00
[PATCH] bitops: m68knommu: use generic bitops
2006-03-26 08:57:13 -08:00
[MIPS] Fix sparsemem support.
2006-06-06 00:15:20 +01:00
[PARISC] Make ioremap default to _nocache
2006-04-21 22:20:35 +00:00
[POWERPC] Fix mdelay badness on shared processor partitions
2006-06-21 15:01:33 +10:00
[POWERPC] Remove stale 64bit on 32bit kernel code
2006-06-15 19:31:26 +10:00
[PATCH] s390: fix in-user atomic futex operation.
2006-06-08 15:15:30 -07:00
[PATCH] sys_kexec_load() naming fixups
2006-04-11 06:18:42 -07:00
[PATCH] sys_kexec_load() naming fixups
2006-04-11 06:18:42 -07:00
[SPARC]: Add robust futex syscall entries.
2006-05-21 21:22:53 -07:00
[SPARC64]: Fix D-cache corruption in mremap
2006-06-01 17:47:25 -07:00
[PATCH] uml: more __user annotations
2006-06-05 12:29:17 -07:00
[PATCH] Remove unused prepare_to_switch macro
2006-04-11 06:18:34 -07:00
[PATCH] x86_64: Fix stack/mmap randomization for compat tasks
2006-05-30 20:31:05 -07:00
[PATCH] request_irq(): remove warnings from irq probing
2006-04-28 08:33:46 -07:00
[POWERPC] Fix mdelay badness on shared processor partitions
2006-06-21 15:01:33 +10:00
V4L/DVB (3702): Make msp3400 routing defines more consistent
2006-04-02 04:56:11 -03:00
[PATCH] net/compat.h build fix
2006-05-31 16:27:11 -07:00
[PATCH] pcmcia: declare pccard_iodyn_ops (fix m8xx_pcmcia.c compilation error)
2006-03-31 21:49:51 +02:00
IB: simplify static rate encoding
2006-04-10 09:43:47 -07:00
[SCSI] srp.h: avoid padding of structs
2006-04-28 10:14:15 -05:00
[ALSA] Fix Oops at rmmod with CONFIG_SND_VERBOSE_PROCFS=n
2006-04-27 21:10:42 +02:00
[PATCH] Remove MODULE_PARM
2006-03-25 08:22:52 -08:00
1e92a550e8