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2f3672cbf9
Pull timer fixes from Thomas Gleixner:
"Two oneliners addressing NOHZ failures:
- Use a bitmask to check for the pending timer softirq and not the
bit number. The existing code using the bit number checked for
the wrong bit, which caused timers to either expire late or stop
completely.
- Make the nohz evaluation on interrupt exit more robust. The
existing code did not re-arm the hardware when interrupting a
running softirq in task context (ksoftirqd or tail of
local_bh_enable()), which caused timers to either expire late
or stop completely"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
nohz: Fix missing tick reprogram when interrupting an inline softirq
nohz: Fix local_timer_softirq_pending()
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.