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3bf8c6307b
Driver should update policy->cur after updating the frequency.
Currently amd_pstate doesn't update policy->cur when `adjust_perf`
is used. Which causes /proc/cpuinfo to show wrong cpu frequency.
Fix this by updating policy->cur with correct frequency value in
adjust_perf function callback.
- Before the fix: (setting min freq to 1.5 MHz)
[root@amd]# cat /proc/cpuinfo | grep "cpu MHz" | sort | uniq --count
1 cpu MHz : 1777.016
1 cpu MHz : 1797.160
1 cpu MHz : 1797.270
189 cpu MHz : 400.000
- After the fix: (setting min freq to 1.5 MHz)
[root@amd]# cat /proc/cpuinfo | grep "cpu MHz" | sort | uniq --count
1 cpu MHz : 1753.353
1 cpu MHz : 1756.838
1 cpu MHz : 1776.466
1 cpu MHz : 1776.873
1 cpu MHz : 1777.308
1 cpu MHz : 1779.900
183 cpu MHz : 1805.231
1 cpu MHz : 1956.815
1 cpu MHz : 2246.203
1 cpu MHz : 2259.984
Fixes:
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Linux kernel
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