john stultz 6bb74df481 [PATCH] clocksource init adjustments (fix bug #7426) ... This patch resolves the issue found here: http://bugme.osdl.org/show_bug.cgi?id=7426 The basic summary is: Currently we register most of i386/x86_64 clocksources at module_init time. Then we enable clocksource selection at late_initcall time. This causes some problems for drivers that use gettimeofday for init calibration routines (specifically the es1968 driver in this case), where durring module_init, the only clocksource available is the low-res jiffies clocksource. This may cause slight calibration errors, due to the small sampling time used. It should be noted that drivers that require fine grained time may not function on architectures that do not have better then jiffies resolution timekeeping (there are a few). However, this does not discount the reasonable need for such fine-grained timekeeping at init time. Thus the solution here is to register clocksources earlier (ideally when the hardware is being initialized), and then we enable clocksource selection at fs_initcall (before device_initcall). This patch should probably get some testing time in -mm, since clocksource selection is one of the most important issues for correct timekeeping, and I've only been able to test this on a few of my own boxes. Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-03-05 07:57:53 -08:00
..
acpi	Pull fluff into release branch	2007-02-16 22:10:32 -05:00
cpu	Revert "[CPUFREQ] constify cpufreq_driver where possible."	2007-02-26 14:55:48 -08:00
.gitignore	[PATCH] x86: gitignore some autogenerated files for i386	2006-02-14 16:09:35 -08:00
alternative.c	[PATCH] paravirt: Patch inline replacements for paravirt intercepts	2006-12-07 02:14:08 +01:00
apic.c	[PATCH] fix "NMI appears to be stuck"	2007-03-05 07:57:53 -08:00
apm.c	[PATCH] i386: use GTOD persistent clock support	2007-02-16 08:13:57 -08:00
asm-offsets.c	[PATCH] i386: Convert i386 PDA code to use %fs	2007-02-13 13:26:20 +01:00
bootflag.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
cpuid.c	[PATCH] i386: use smp_call_function_single()	2007-02-13 13:26:23 +01:00
crash_dump.c	[PATCH] kdump: read previous kernel's memory	2006-01-10 08:01:28 -08:00
crash.c	[PATCH] Kexec / Kdump: Unify elf note code	2006-12-07 08:39:46 -08:00
doublefault.c	[PATCH] i386: cpu_relax() in crash.c and doublefault.c	2006-06-25 10:00:55 -07:00
e820.c	[PATCH] i386: romsignature/checksum cleanup	2007-02-13 13:26:22 +01:00
early_printk.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
efi_stub.S	[PATCH] x86: remove unused include from efi_stub.S	2006-09-26 08:48:56 -07:00
efi.c	[PATCH] EFI x86: pass firmware call parameters on the stack	2007-02-04 10:27:10 -08:00
entry.S	[PATCH] i386: entry.S END/ENDPROC annotations	2007-02-13 13:26:24 +01:00
head.S	[PATCH] i386: Rename cpu_gdt_descr and remove extern declaration from smpboot.c	2007-02-13 13:26:26 +01:00
hpet.c	[PATCH] clocksource init adjustments (fix bug #7426)	2007-03-05 07:57:53 -08:00
i386_ksyms.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
i387.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
i8237.c	[PATCH] mmc (mainly): add "or later" clause to licence statement.	2006-10-01 00:39:23 -07:00
i8253.c	[PATCH] clocksource init adjustments (fix bug #7426)	2007-03-05 07:57:53 -08:00
i8259.c	[PATCH] genirq: do not mask interrupts by default	2007-02-16 08:14:00 -08:00
init_task.c	[PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c	2006-10-02 07:57:20 -07:00
io_apic.c	[PATCH] x86_64/i386 irq: Fix !CONFIG_SMP compilation	2007-02-28 08:52:31 -08:00
ioport.c	[PATCH] i386: use thread_info flags for debug regs and IO bitmaps	2006-07-09 18:47:12 -07:00
irq.c	Revert "[PATCH] i386: add idle notifier"	2007-02-26 09:21:46 -08:00
kprobes.c	[PATCH] i386: Kprobe rpl fix	2007-02-13 13:26:21 +01:00
ldt.c	[PATCH] i386: remove default_ldt, and simplify ldt-setting.	2006-12-07 02:14:01 +01:00
machine_kexec.c	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	2006-09-26 10:52:38 +02:00
Makefile	[PATCH] clockevents: i386 drivers	2007-02-16 08:13:59 -08:00
mca.c	[PATCH] i386: replace kmalloc+memset with kzalloc	2006-12-07 02:14:19 +01:00
microcode.c	[PATCH] i386: Fix warning in microcode.c	2007-02-13 13:26:25 +01:00
module.c	[PATCH] Generic BUG for i386	2006-12-08 08:28:39 -08:00
mpparse.c	ACPICA: use new ACPI headers.	2007-02-02 21:14:28 -05:00
msr.c	[PATCH] i386: use smp_call_function_single()	2007-02-13 13:26:23 +01:00
nmi.c	[PATCH] i386 prepare nmi watchdog for dynticks	2007-02-16 08:13:59 -08:00
numaq.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
paravirt.c	[PATCH] vmi: pit override	2007-03-05 07:57:52 -08:00
pci-dma.c	[PATCH] fix memory leak in dma_declare_coherent_memory()	2007-03-01 14:53:39 -08:00
pcspeaker.c	[PATCH] x86: Unify pcspeaker platform device code between i386/x86-64	2007-02-13 13:26:26 +01:00
process.c	Revert "[PATCH] i386: add idle notifier"	2007-02-26 09:21:46 -08:00
ptrace.c	[PATCH] i386: Convert i386 PDA code to use %fs	2007-02-13 13:26:20 +01:00
quirks.c	[PATCH] x86: Fix verify_quirk_intel_irqbalance()	2006-12-09 21:33:35 +01:00
reboot_fixups.c	[PATCH] i386: Remove printk about reboot fixups at reboot	2006-04-09 11:53:53 -07:00
reboot.c	[PATCH] arch/i386/kernel/reboot.c should #include <linux/reboot.h>	2006-12-07 08:39:44 -08:00
relocate_kernel.S	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	2006-09-26 10:52:38 +02:00
scx200.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
setup.c	[PATCH] clocksource init adjustments (fix bug #7426)	2007-03-05 07:57:53 -08:00
sigframe.h	[PATCH] __user annotations for pointers in i386 sigframe	2005-09-09 10:31:59 -07:00
signal.c	[PATCH] x86: Don't require the vDSO for handling a.out signals	2007-02-13 13:26:26 +01:00
smp.c	Revert "[PATCH] i386: add idle notifier"	2007-02-26 09:21:46 -08:00
smpboot.c	[PATCH] vmi: paravirt drop udelay op	2007-03-05 07:57:52 -08:00
srat.c	ACPI: build fix for IBM x440 - CONFIG_X86_SUMMIT	2007-02-02 21:47:33 -05:00
summit.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sys_i386.c	[PATCH] provide kernel_execve on all architectures	2006-10-02 07:57:23 -07:00
syscall_table.S	[PATCH] epoll_pwait()	2006-10-11 11:14:21 -07:00
sysenter.c	[PATCH] i386: Fix broken CONFIG_COMPAT_VDSO on i386	2007-02-13 13:26:26 +01:00
time.c	[PATCH] clocksource init adjustments (fix bug #7426)	2007-03-05 07:57:53 -08:00
topology.c	Replace remaining references to "driverfs" with "sysfs".	2007-02-17 19:13:42 +01:00
trampoline.S	[PATCH] i386: fix modpost warning in SMP trampoline code	2007-01-05 23:55:23 -08:00
traps.c	[PATCH] i386: add option to show more code in oops reports	2007-02-13 13:26:25 +01:00
tsc_sync.c	[PATCH] x86: rewrite SMP TSC sync code	2007-02-16 08:13:57 -08:00
tsc.c	[PATCH] clocksource init adjustments (fix bug #7426)	2007-03-05 07:57:53 -08:00
vm86.c	[PATCH] i386: Convert i386 PDA code to use %fs	2007-02-13 13:26:20 +01:00
vmi.c	[PATCH] vmi: smp fixes	2007-03-05 07:57:53 -08:00
vmitime.c	[PATCH] vmi: smp fixes	2007-03-05 07:57:53 -08:00
vmlinux.lds.S	[PATCH] i386: move startup_32() in text.head section	2007-02-13 13:26:22 +01:00
vsyscall-int80.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
vsyscall-note.S	[PATCH] i386 vDSO: add PT_NOTE segment	2005-04-16 15:24:48 -07:00
vsyscall-sigreturn.S	[PATCH] Mark unwind info for signal trampolines in vDSOs	2006-03-31 12:18:52 -08:00
vsyscall-sysenter.S	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	2006-06-27 17:32:38 -07:00
vsyscall.lds.S	[PATCH] vDSO hash-style fix	2006-07-31 13:28:43 -07:00
vsyscall.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00