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sys: set tick_update_hz to 100 by default in Linux driver

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We can't reliably detect the internal kernel HZ, it may not even be
fixed (CONFIG_NO_HZ). Use a fixed value of 100.
This commit is contained in:
Miroslav Lichvar
2014-05-22 15:49:11 +02:00
parent e8bb95ba55
commit 14687d003d
1 changed files with 4 additions and 1 deletions
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5
sys_linux.c
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@@ -298,7 +298,10 @@ get_version_specific_details(void)
basic_freq_scale = dshift_hz / dhz;
nominal_tick = (1000000L + (hz/2))/hz; /* Mirror declaration in kernel */
max_tick_bias = nominal_tick / 10;
tick_update_hz = hz;
/* We can't reliably detect the internal kernel HZ, it may not even be fixed
(CONFIG_NO_HZ aka tickless), assume the lowest commonly used fixed rate */
tick_update_hz = 100;
/* The basic_freq_scale comes from:
* the kernel increments the usec counter HZ times per second (if the timer