| #
d35f6548 |
| 29-Jul-2017 |
Ian Lepore <ian@FreeBSD.org> |
Add inline functions to convert between sbintime_t and decimal time units.
Use them in some existing code that is vulnerable to roundoff errors.
The existing constant SBT_1NS is a honeypot, luring u
Add inline functions to convert between sbintime_t and decimal time units.
Use them in some existing code that is vulnerable to roundoff errors.
The existing constant SBT_1NS is a honeypot, luring unsuspecting folks into
writing code such as long_timeout_ns*SBT_1NS to generate the argument for a
sleep call. The actual value of 1ns in sbt units is ~4.3, leading to a
large roundoff error giving a shorter sleep than expected when multiplying
by the trucated value of 4 in SBT_1NS. (The evil honeypot aspect becomes
clear after you waste a whole day figuring out why your sleeps return early.)
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Revision tags: release/11.1.0, release/11.0.1, release/11.0.0, release/10.3.0 |
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11d38a57 |
| 28-Oct-2015 |
Baptiste Daroussin <bapt@FreeBSD.org> |
Merge from head
Sponsored by: Gandi.net
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| #
becbad1f |
| 13-Oct-2015 |
Baptiste Daroussin <bapt@FreeBSD.org> |
Merge from head
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f94594b3 |
| 12-Sep-2015 |
Baptiste Daroussin <bapt@FreeBSD.org> |
Finish merging from head, messed up in previous attempt
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| #
00176600 |
| 09-Sep-2015 |
Navdeep Parhar <np@FreeBSD.org> |
Merge r286744-r287584 from head.
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d9442b10 |
| 05-Sep-2015 |
Dimitry Andric <dim@FreeBSD.org> |
Merge ^/head r286858 through r287489.
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| #
ae1f3df4 |
| 28-Aug-2015 |
Warner Losh <imp@FreeBSD.org> |
New 1-Wire bus implementation. 1-Wire controller is abstracted, though
only gpiobus configured via FDT is supported. Bus enumeration is
supported. Devices are created for each device found. 1-Wire
te
New 1-Wire bus implementation. 1-Wire controller is abstracted, though
only gpiobus configured via FDT is supported. Bus enumeration is
supported. Devices are created for each device found. 1-Wire
temperature controllers are supported, but other drivers could be
written. Temperatures are polled and reported via a sysctl. Errors
are reported via sysctl counters. Mis-wired bus detection is included
for more trouble shooting. See ow(4), owc(4) and ow_temp(4) for
details of what's supported and known issues.
This has been tested on Raspberry Pi-B, Pi2 and Beagle Bone Black
with up to 7 devices.
Differential Revision: https://reviews.freebsd.org/D2956
Relnotes: yes
MFC after: 2 weeks
Reviewed by: loos@ (with many insightful comments)
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