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| author | Christian Göttsche <cgzones@googlemail.com> | 2021-01-13 15:44:05 +0100 |
|---|---|---|
| committer | cgzones <cgzones@googlemail.com> | 2021-01-15 20:55:53 +0100 |
| commit | 1f20c0fb3debf2fa4d4be934d0b4552fdf814caa (patch) | |
| tree | 609d91468ed9a53fdc3df4a2f8afe6e08ea640d3 /linux/Platform.h | |
| parent | b5a5e83470ef2db6cace89a5f513b038a96bbff9 (diff) | |
Linux: fall back to cpuinfo on slow scaling_cur_freq read
On some AMD and Intel CPUs read()ing scaling_cur_freq is quite slow
(> 1ms). This delay accumulates for every core.
If the read on CPU 0 takes longer than 500us bail out and fall back to
reading the frequencies from /proc/cpuinfo.
Once the condition has been met, bail out early for the next couple of
scans.
Closes: #471
Diffstat (limited to 'linux/Platform.h')
0 files changed, 0 insertions, 0 deletions