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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>		18 years ago
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boot	…
crypto	…
ia32	Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6	18 years ago
kernel	[PATCH] clocksource init adjustments (fix bug #7426)	18 years ago
lib	Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq	18 years ago
mm	Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6	18 years ago
oprofile	…
pci	…
Kconfig	[PATCH] time: x86_64: re-enable vsyscall support for x86_64	18 years ago
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defconfig	…