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power: fix max frequency after turbo disabling

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This patch will ensure the correct max frequency of a core is set in
the lcore_power_info struct when disabling turbo, while using the
intel pstate driver.

Fixes: e6c6dc0f96 ("power: add p-state driver compatibility")
Cc: stable@dpdk.org

Signed-off-by: Lee Daly <lee.daly@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
Acked-by: Liang Ma <liang.j.ma@intel.com>
This commit is contained in:
Lee Daly 2019-04-12 16:57:27 +01:00 committed by Thomas Monjalon
parent 2653bee888
commit a0d15e43e4
1 changed files with 9 additions and 0 deletions
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9
lib/librte_power/power_pstate_cpufreq.c
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@ -810,6 +810,15 @@ power_pstate_disable_turbo(unsigned int lcore_id)
pi->turbo_enable = 0; pi->turbo_enable = 0;
if (pi->turbo_available && pi->curr_idx <= 1) {
/* Try to set freq to max by default coming out of turbo */
if (power_pstate_cpufreq_freq_max(lcore_id) < 0) {
RTE_LOG(ERR, POWER,
"Failed to set frequency of lcore %u to max\n",
lcore_id);
return -1;
}
}
return 0; return 0;
} }