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| author | JustArchi <JustArchi@JustArchi.net> | 2015-12-20 22:51:06 +1100 |
|---|---|---|
| committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-12-21 18:18:44 +0100 |
| commit | bd826b68f05e721b8be8a8dbe8f556ed7eb4ae54 (patch) | |
| tree | 2dc844d093c897b740885aa70ab56f500c563b57 | |
| parent | 0f555266058d9837069faebced590f4722cb7887 (diff) | |
| download | kernel_samsung_smdk4412-bd826b68f05e721b8be8a8dbe8f556ed7eb4ae54.zip kernel_samsung_smdk4412-bd826b68f05e721b8be8a8dbe8f556ed7eb4ae54.tar.gz kernel_samsung_smdk4412-bd826b68f05e721b8be8a8dbe8f556ed7eb4ae54.tar.bz2 | |
cpufreq: pegasusq: allow keeping at least two cores awake
fixes a2dp issues
original commit:
https://github.com/ArchiDroid/ArchiKernel/commit/1f5b6449dfddee4bf1528f85d97e250e1431dcd5
Change-Id: If7d5ec882a10d033d71be6c3a310917bf0df9b80
| -rw-r--r-- | drivers/cpufreq/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_pegasusq.c | 4 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 8112af3..9d4b5dd 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -17,6 +17,17 @@ config CPU_FREQ if CPU_FREQ +config HAS_BLUETOOTH_DEADLOCKS + bool "System has bluetooth deadlocks" + depends on BT_BCM4334 + default y + help + It seems that Android Lollipop introduced a bug which causes an + event listener to deadlock when A2DP is used and governor forces + only one core to stay awake. This hack prevents such situation by + always leaving at least two cores online. I wish we could get rid + of this at some point. + config CPU_FREQ_TABLE tristate diff --git a/drivers/cpufreq/cpufreq_pegasusq.c b/drivers/cpufreq/cpufreq_pegasusq.c index c44af54..aa172a1 100644 --- a/drivers/cpufreq/cpufreq_pegasusq.c +++ b/drivers/cpufreq/cpufreq_pegasusq.c @@ -155,7 +155,11 @@ static unsigned int get_nr_run_avg(void) #define MAX_HOTPLUG_RATE (40u) #define DEF_MAX_CPU_LOCK (0) +#ifdef CONFIG_HAS_BLUETOOTH_DEADLOCKS +#define DEF_MIN_CPU_LOCK (2) +#else #define DEF_MIN_CPU_LOCK (0) +#endif #define DEF_CPU_UP_FREQ (500000) #define DEF_CPU_DOWN_FREQ (200000) #define DEF_UP_NR_CPUS (1) |