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fa13a5a1f2
linux/arch/powerpc/kernel
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Paul Mackerras fa13a5a1f2 sched: restore deterministic CPU accounting on powerpc 
Since powerpc started using CONFIG_GENERIC_CLOCKEVENTS, the
deterministic CPU accounting (CONFIG_VIRT_CPU_ACCOUNTING) has been
broken on powerpc, because we end up counting user time twice: once in
timer_interrupt() and once in update_process_times().

This fixes the problem by pulling the code in update_process_times
that updates utime and stime into a separate function called
account_process_tick.  If CONFIG_VIRT_CPU_ACCOUNTING is not defined,
there is a version of account_process_tick in kernel/timer.c that
simply accounts a whole tick to either utime or stime as before.  If
CONFIG_VIRT_CPU_ACCOUNTING is defined, then arch code gets to
implement account_process_tick.

This also lets us simplify the s390 code a bit; it means that the s390
timer interrupt can now call update_process_times even when
CONFIG_VIRT_CPU_ACCOUNTING is turned on, and can just implement a
suitable account_process_tick().

account_process_tick() now takes the task_struct * as an argument.
Tested both with and without CONFIG_VIRT_CPU_ACCOUNTING.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-11-09 22:39:38 +01:00
..
vdso32 powerpc32 vDSO: linker script indentation 2007-10-16 10:01:50 -07:00
vdso64 [POWERPC] Fix 64 bits vDSO DWARF info for CR register 2007-10-17 22:30:09 +10:00
align.c [POWERPC] Handle alignment faults on SPE load/store instructions 2007-09-14 08:51:48 -05:00
asm-offsets.c powerpc: add scaled time accounting 2007-10-18 14:37:28 -07:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
binfmt_elf32.c powerpc: Use linux/elfcore-compat.h 2007-10-17 08:42:51 -07:00
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 [PATCH] add SIGNAL syscall class (v3) 2007-05-11 05:38:25 -04:00
cpu_setup_6xx.S Spelling fix: explicitly 2007-10-19 23:22:55 +02:00
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 [POWERPC] pasemi: Enable one more hid bit 2007-04-24 21:31:49 +10:00
cpu_setup_ppc970.S [POWERPC] powerpc: Enable DEEPNAP power savings mode on 970MP 2006-10-16 16:32:25 +10:00
cputable.c [POWERPC] 4xx: Add AMCC 405EX support to cputable.c 2007-10-11 15:01:22 -05:00
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 Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
entry_32.S [POWERPC] Add cpu feature for SPE handling 2007-09-14 08:53:30 -05:00
entry_64.S [POWERPC] Add 1TB workaround for PA6T 2007-10-17 22:30:09 +10:00
firmware.c
fpu.S [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S 2006-08-30 14:45:35 +10:00
head_8xx.S [POWERPC] 8xx: Work around CPU15 erratum. 2007-10-03 20:36:36 -05:00
head_32.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_40x.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_44x.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_64.S [POWERPC] Use 1TB segments 2007-10-12 14:05:17 +10:00
head_booke.h
head_fsl_booke.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
ibmebus.c Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
idle_6xx.S
idle_power4.S [POWERPC] powermac: Support G5 CPU hotplug 2007-05-07 20:31:13 +10:00
idle.c [POWERPC] Enable tickless idle and high res timers for powerpc 2007-10-03 15:44:34 +10:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
io.c [POWERPC] Move inline asm eieio to using eieio inline function 2007-07-10 00:33:14 -05:00
iomap.c [POWERPC] Add 64-bit resources support to pci_iomap 2007-09-20 07:36:52 -05:00
iommu.c Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
irq.c Spelling fix: explicitly 2007-10-19 23:22:55 +02:00
isa-bridge.c [POWERPC] Rewrite IO allocation & mapping on powerpc64 2007-06-14 22:29:56 +10:00
kprobes.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
l2cr_6xx.S Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
legacy_serial.c [POWERPC] Add legacy serial support for OPB with flattened device tree 2007-10-12 14:05:18 +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 [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
machine_kexec.c Use extended crashkernel command line on ppc64 2007-10-19 11:53:51 -07:00
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 [POWERPC] kexec: Send slaves to new kernel earlier 2007-06-25 16:55:16 +10:00
misc.S [POWERPC] convert string i/o operations to C 2006-09-20 14:06:18 +10:00
module_32.c [POWERPC] Add support for R_PPC_ADDR16_HI relocations 2007-01-24 21:13:58 +11:00
module_64.c [POWERPC] Generic BUG for powerpc 2006-12-11 16:35:07 +11:00
msi.c [POWERPC] PowerPC MSI infrastructure 2007-05-08 13:40:31 +10:00
nvram_64.c [POWERPC] pseries: Eliminate global error_log_cnt variable 2007-08-17 11:01:52 +10:00
of_device.c [POWERPC] Move of_device allocation into of_device.[ch] 2007-10-17 22:30:07 +10:00
of_platform.c [POWERPC] Move of_device allocation into of_device.[ch] 2007-10-17 22:30:07 +10:00
paca.c [POWERPC] Implement SLB shadow buffer 2006-08-08 17:08:56 +10:00
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 [POWERPC] Fix typo: MMCR0_PMA0 != MMCR0_PMAO 2007-05-22 20:20:56 +10:00
ppc32.h
ppc_ksyms.c [POWERPC] Fix build errors when BLOCK=n 2007-09-22 14:49:22 +10:00
proc_ppc64.c [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
process.c sched: restore deterministic CPU accounting on powerpc 2007-11-09 22:39:38 +01:00
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 Consolidate PTRACE_DETACH 2007-10-16 09:42:49 -07:00
rtas_flash.c Slab API: remove useless ctor parameter and reorder parameters 2007-10-17 08:42:45 -07:00
rtas_pci.c [POWERPC] rtas_pci_ops: Use named structure member initializers 2007-08-17 11:01:53 +10:00
rtas-proc.c [POWERPC] Fix ppc_rtas_progress_show() 2007-05-17 21:11:15 +10:00
rtas-rtc.c
rtas.c [POWERPC] Remove old interface find_path_device 2007-04-24 22:08:59 +10:00
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] Quieten cache information at boot 2007-10-17 22:30:09 +10:00
setup-common.c Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
setup.h
signal_32.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal_64.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal.h [POWERPC] Less ifdef's in signal.c/signal.h 2007-06-14 22:29:58 +10:00
smp-tbsync.c [POWERPC] Replace kmalloc+memset with kzalloc 2006-12-04 20:42:09 +11:00
smp.c Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
softemu8xx.c [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
suspend.c [PATCH] x86: Move swsusp __pa() dependent code to arch portion 2007-05-02 19:27:07 +02:00
swsusp_32.S [PATCH] Change the name of pagedir_nosave 2006-09-26 08:49:01 -07:00
swsusp_64.c [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp_asm64.S [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp.c powerpc: fixup hard_irq_disable semantics 2007-05-11 08:29:34 -07:00
sys_ppc32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
syscalls.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -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 sched: restore deterministic CPU accounting on powerpc 2007-11-09 22:39:38 +01:00
traps.c Use helpers to obtain task pid in printks (arch code) 2007-10-19 11:53:43 -07:00
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 Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
vmlinux.lds.S [POWERPC] Fix modpost warnings from head*.S on ppc32 2007-09-14 08:53:36 -05:00