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cpufreq: cpu-boost: Re-issue boosts above minimum frequency

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Frequency boosts where the source CPU frequency is greater than CPU's
minimum frequency should always go through regardless of the destination
CPU's current frequency. This fixes a performance issue where the governor
lowers the CPU frequency shortly after a thread is migrated to it because
the boost wasn't re-issued.

Change-Id: I449545a688d84b0a6e834f5a51dcb499caa84d29
Signed-off-by: Patrick Cain <pcain@codeaurora.org>
This commit is contained in:
Patrick Cain 2014-03-12 16:56:16 -07:00 • committed by David Keitel
parent 2eb27275fc
commit 158eff54ea
1 changed files with 2 additions and 6 deletions
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8
drivers/cpufreq/cpu-boost.c
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@ -159,16 +159,12 @@ static int boost_mig_sync_thread(void *data)
if (ret) if (ret)
continue; continue;
if (dest_policy.cur >= src_policy.cur) { if (src_policy.cur == src_policy.cpuinfo.min_freq) {
pr_debug("No sync. CPU%d@%dKHz >= CPU%d@%dKHz\n", pr_debug("No sync. Source CPU%d@%dKHz at min freq\n",
dest_cpu, dest_policy.cur,
src_cpu, src_policy.cur); src_cpu, src_policy.cur);
continue; continue;
} }
if (sync_threshold && (dest_policy.cur >= sync_threshold))
continue;
cancel_delayed_work_sync(&s->boost_rem); cancel_delayed_work_sync(&s->boost_rem);
if (sync_threshold) if (sync_threshold)
s->boost_min = min(sync_threshold, src_policy.cur); s->boost_min = min(sync_threshold, src_policy.cur);