linux/arch/cris/kernel
Jesper Nilsson 60dbd66331 CRIS: GENERIC_TIME fixes
GENERIC_TIME was not functional for CRIS, giving random backward
time jumps.

For CRISv32 implement a new clocksource using the free running counter
and ditch the arch_gettimeoffset.

The random time jumps still existed, but turned out to be the write_seqlock
which was missing around our do_timer() call.

So switch over to GENERIC_TIME using the clocksource for CRISv32.

CRISv10 doesn't have the free running counter needed for the
clocksource trick, but we can still use GENERIC_TIME with
arch_gettimeoffset.

Unfortunately, there were problems in using the prescaler register
to timer0 for the gettimeoffset calculation, so it is now ignored,
making our resolution worse by the tune of 40usec (0.4%) worst case.

At the same time, clean up some formatting and use NSEC_PER_SEC
instead of 1000000000.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2010-08-04 12:58:55 +02:00
..
asm-offsets.c drop explicit include of autoconf.h 2009-12-12 13:08:15 +01:00
crisksyms.c Generic semaphore implementation 2008-04-17 10:42:34 -04:00
irq.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Makefile arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 2009-09-20 12:28:22 +02:00
module.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
process.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
profile.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ptrace.c KEYS: Add missing linux/tracehook.h #inclusions 2009-09-09 18:30:02 +10:00
setup.c cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: cris 2009-03-16 14:11:46 +10:30
sys_cris.c Add generic sys_ipc wrapper 2010-03-12 15:52:32 -08:00
time.c CRIS: GENERIC_TIME fixes 2010-08-04 12:58:55 +02:00
traps.c CRIS: Minor generic kernel/traps.c changes. 2008-02-08 11:06:24 +01:00
vmlinux.lds.S drop explicit include of autoconf.h 2009-12-12 13:08:15 +01:00