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cdec12aebe
kernel-ark/arch/powerpc/kernel
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Paul Mackerras cdec12aebe [POWERPC] Make clockevents work on PPC601 processors 
In testing the new clocksource and clockevent code on a PPC601
processor, I discovered that the clockevent multiplier value for the
decrementer clockevent was overflowing.  Because the RTCL register in
the 601 effectively counts at 1GHz (it doesn't actually, but it
increases by 128 every 128ns), and the shift value was 32, that meant
the multiplier value had to be 2^32, which won't fit in an unsigned
long on 32-bit.  The same problem would arise on any platform where
the timebase frequency was 1GHz or more (not that we actually have any
such machines today).

This fixes it by reducing the shift value to 16.  Doing the
calculations with a resolution of 2^-16 nanoseconds (15 femtoseconds)
should be quite adequate.  :)

Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-11 21:49:23 +10:00
..
vdso32 [POWERPC] Update .gitignore for new vdso generated files 2007-10-08 08:38:12 -05:00
vdso64 [POWERPC] Update .gitignore for new vdso generated files 2007-10-08 08:38:12 -05:00
align.c [POWERPC] Handle alignment faults on SPE load/store instructions 2007-09-14 08:51:48 -05:00
asm-offsets.c [POWERPC] Size swapper_pg_dir correctly 2007-09-19 15:25:34 +10:00
audit.c
binfmt_elf32.c
btext.c [POWERPC] Clean out a bunch of duplicate includes 2007-08-17 11:01:51 +10:00
clock.c [POWERPC] clk.h interface for platforms 2007-10-03 09:11:56 +10:00
compat_audit.c
cpu_setup_6xx.S
cpu_setup_44x.S [POWERPC] 4xx: 440EPx/GRx incorrect write to DDR SDRAM errata workaround 2007-10-03 07:20:18 -05:00
cpu_setup_pa6t.S
cpu_setup_ppc970.S
cputable.c [POWERPC] Fix performance monitor on machines with logical PVR 2007-10-11 21:37:50 +10:00
crash_dump.c [POWERPC] FWNMI is only used on pSeries 2007-09-19 15:25:34 +10:00
crash.c [POWERPC] Clean out a bunch of duplicate includes 2007-08-17 11:01:51 +10:00
dma_64.c
entry_32.S [POWERPC] Add cpu feature for SPE handling 2007-09-14 08:53:30 -05:00
entry_64.S [POWERPC] Remove barriers from the SLB shadow buffer update 2007-09-19 14:40:54 +10:00
firmware.c
fpu.S
head_8xx.S [POWERPC] 8xx: Work around CPU15 erratum. 2007-10-03 20:36:36 -05:00
head_32.S [POWERPC] Add early debug console for CPM serial ports. 2007-10-03 20:35:43 -05:00
head_40x.S [POWERPC] Remove cmd_line from head*.S 2007-09-19 15:25:34 +10:00
head_44x.S [POWERPC] 4xx: Move 440EP(x) FPU setup from head_44x to cpu_setup_4xx 2007-10-03 07:20:17 -05:00
head_64.S [POWERPC] FWNMI is only used on pSeries 2007-09-19 15:25:34 +10:00
head_booke.h
head_fsl_booke.S [POWERPC] Cleaned up whitespace in head_fsl_booke.S 2007-10-04 11:03:06 -05:00
ibmebus.c [POWERPC] ibmebus: More descriptive error return code in ibmebus_store_probe() 2007-10-03 13:25:28 +10:00
idle_6xx.S
idle_power4.S
idle.c [POWERPC] Enable tickless idle and high res timers for powerpc 2007-10-03 15:44:34 +10:00
init_task.c
io.c
iomap.c [POWERPC] Add 64-bit resources support to pci_iomap 2007-09-20 07:36:52 -05:00
iommu.c [POWERPC] Clean out a bunch of duplicate includes 2007-08-17 11:01:51 +10:00
irq.c [POWERPC] Limit range of __init_ref_ok somewhat 2007-10-03 11:48:44 +10:00
isa-bridge.c
kprobes.c jprobes: make jprobes a little safer for users 2007-07-19 10:04:44 -07:00
l2cr_6xx.S
legacy_serial.c [POWERPC] Move serial_dev_init to device_initcall() 2007-09-13 04:09:14 +10:00
lparcfg.c [POWERPC] ppc64: support CONFIG_DEBUG_PREEMPT 2007-10-03 11:48:44 +10:00
machine_kexec_32.c
machine_kexec_64.c
machine_kexec.c
Makefile [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
misc_32.S [POWERPC] Fix small race in 44x tlbie function 2007-08-15 15:12:50 +10:00
misc_64.S
misc.S
module_32.c
module_64.c
msi.c
nvram_64.c [POWERPC] pseries: Eliminate global error_log_cnt variable 2007-08-17 11:01:52 +10:00
of_device.c Begin to consolidate of_device.c 2007-07-20 13:39:59 +10:00
of_platform.c [POWERPC] Prepare to remove of_platform_driver name 2007-10-09 21:00:48 +10:00
paca.c
pci_32.c [POWERPC] null_pci_ops: Use named structure member initializers 2007-08-17 11:01:53 +10:00
pci_64.c [POWERPC] Fix pci domain detection 2007-10-03 11:48:44 +10:00
pci_dn.c [POWERPC] Fix section mismatch in PCI code 2007-09-19 15:25:34 +10:00
pci-common.c [POWERPC] Use alloc_maybe_bootmem() in pcibios_alloc_controller 2007-10-03 15:31:35 +10:00
pmc.c
ppc32.h
ppc_ksyms.c [POWERPC] Fix build errors when BLOCK=n 2007-09-22 14:49:22 +10:00
proc_ppc64.c
process.c Merge branch 'linux-2.6' into for-2.6.24 2007-10-03 15:33:17 +10:00
prom_init.c [POWERPC] prom_init whitespace cleanup, typo fix 2007-09-14 01:33:24 +10:00
prom_parse.c Revert "[POWERPC] Don't complain if size-cells == 0 in prom_parse()" 2007-07-26 13:44:36 +10:00
prom.c [POWERPC] Use cache-inhibited large page bit from firmware 2007-10-09 21:00:48 +10:00
ptrace32.c [POWERPC] Add CHECK_FULL_REGS in several places in ptrace code 2007-10-03 11:48:43 +10:00
ptrace.c [POWERPC] Add CHECK_FULL_REGS in several places in ptrace code 2007-10-03 11:48:43 +10:00
rtas_flash.c mm: Remove slab destructors from kmem_cache_create(). 2007-07-20 10:11:58 +09:00
rtas_pci.c [POWERPC] rtas_pci_ops: Use named structure member initializers 2007-08-17 11:01:53 +10:00
rtas-proc.c
rtas-rtc.c
rtas.c
semaphore.c
setup_32.c [POWERPC] Only call ppc_md.setup_arch() if it is provided 2007-10-11 20:39:36 +10:00
setup_64.c [POWERPC] Only call ppc_md.setup_arch() if it is provided 2007-10-11 20:39:36 +10:00
setup-common.c [POWERPC] Remove cmd_line from head*.S 2007-09-19 15:25:34 +10:00
setup.h
signal_32.c
signal_64.c
signal.c
signal.h
smp-tbsync.c
smp.c [POWERPC] Implement clockevents driver for powerpc 2007-10-03 15:44:34 +10:00
softemu8xx.c [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
suspend.c
swsusp_32.S
swsusp_64.c
swsusp_asm64.S
swsusp.c
sys_ppc32.c
syscalls.c Remove fs.h from mm.h 2007-07-29 17:09:29 -07:00
sysfs.c [POWERPC] Remove warning in arch/powerpc/kernel/sysfs.c 2007-09-14 01:33:22 +10:00
systbl.S [POWERPC] Align the sys_call_table 2007-10-11 14:36:47 +10:00
tau_6xx.c
time.c [POWERPC] Make clockevents work on PPC601 processors 2007-10-11 21:49:23 +10:00
traps.c [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
udbg_16550.c [POWERPC] 4xx: Implement udbg_getc() for 440 2007-09-19 21:13:17 -05:00
udbg.c [POWERPC] Add early debug console for CPM serial ports. 2007-10-03 20:35:43 -05:00
vdso.c [POWERPC] Disable vDSO support for ARCH=ppc where it's not implemented 2007-10-11 20:25:25 +10:00
vecemu.c
vector.S
vio.c [POWERPC] iSeries: Move detection of virtual cdroms 2007-10-11 20:40:47 +10:00
vmlinux.lds.S [POWERPC] Fix modpost warnings from head*.S on ppc32 2007-09-14 08:53:36 -05:00