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Subject[PATCH v3 0/3] reduce TSC deadline frequency errors
Date
This series is a split-off of the x86/TSC related patches from the
"avoid double timer interrupt with nohz and Intel TSC" v2 series
(http://lkml.kernel.org/g/20160710193047.18320-1-nicstange@gmail.com).

It turned out that the non-x86 related parts of the aforementioned series
are more than arguable and I don't want to bother you with any further
discussion of those. I apologize for any confusion this split might cause.

Applicable to linux-next-20160712. The individual patches don't depend on
each other.

Changes to v2:
- [3/3] ("arch, x86, tsc: inform TSC deadline clockevent device about
recalibration")
Use clockevents_update_freq() rather than clockevents_config().

- Former [4/4] ("kernel/time/clockevents: compensate for monotonic
clock's dynamic frequency")
Split off, not a member of this series anymore.

Changes to v1:
- [1/3] ("arch, x86, tsc deadline clockevent dev: reduce frequency
roundoff error")
No changes to the patch. Note that the v1 mail could not be delivered
to the author of the TSC_DIVISOR introducing commit 279f1461432c
("x86: apic: Use tsc deadline for oneshot when available"),
Suresh Siddha <suresh.b.siddha@intel.com>, so I had to remove him
from the CC list.

- [2/3] ("arch, x86, tsc deadline clockevent dev: reduce TSC_DIVISOR
to 2")
Likewise.

- [3/3] ("arch, x86, tsc: inform TSC deadline clockevent device about
recalibration")
Silence the kbuild test robot on ARCH=i386 by wrapping the new call
to lapic_update_tsc_freq() from arch/x86/kernel/tsc.c in an
#ifdef CONFIG_X86_LOCAL_APIC.

Nicolai Stange (3):
arch, x86, tsc deadline clockevent dev: reduce frequency roundoff
error
arch, x86, tsc deadline clockevent dev: reduce TSC_DIVISOR to 2
arch, x86, tsc: inform TSC deadline clockevent device about
recalibration

arch/x86/include/asm/apic.h | 1 +
arch/x86/kernel/apic/apic.c | 30 ++++++++++++++++++++++++++++--
arch/x86/kernel/tsc.c | 6 ++++++
3 files changed, 35 insertions(+), 2 deletions(-)

--
2.9.0

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