diff options
| author | kib <kib@FreeBSD.org> | 2015-09-25 13:03:57 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2015-09-25 13:03:57 +0000 |
| commit | a20643c9c7a0c2d2eea66d084dcb051eb135277c (patch) | |
| tree | 55a3724048ed67c2e9f6fe36cc1bd5c6b2fe712a /lib/libfetch | |
| parent | dc7c5180b5ec847963c61423d1b49da1ada833eb (diff) | |
| download | FreeBSD-src-a20643c9c7a0c2d2eea66d084dcb051eb135277c.zip FreeBSD-src-a20643c9c7a0c2d2eea66d084dcb051eb135277c.tar.gz | |
Use per-cpu values for base and last in tc_cpu_ticks(). The values
are updated lockess, different CPUs write its own view of timecounter
state. The critical section is done for safety, callers of
tc_cpu_ticks() are supposed to already enter critical section, or to
own a spinlock.
The change fixes sporadical reports of too high values reported for
the (W)CPU on platforms that do not provide cpu ticker and use
tc_cpu_ticks(), in particular, arm*.
Diagnosed and reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Diffstat (limited to 'lib/libfetch')
0 files changed, 0 insertions, 0 deletions
