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authorRob Rice <rob.rice@broadcom.com>2016-11-14 13:26:03 -0500
committerJassi Brar <jaswinder.singh@linaro.org>2016-12-19 20:10:22 +0530
commit63bb50bdb997f4bede1b5f2d56645f393f7f39fb (patch)
treea9dc04c94d42199070b742e050db30d624c8e170 /include/dt-bindings
parent38ed49ed4a99942f1a340f4a82a5a8b492e3463b (diff)
mailbox: bcm-pdc: Performance improvements
Three changes to improve performance in the PDC driver: - disable and reenable interrupts while the interrupt handler is running - update rxin and txin descriptor indexes more efficiently - group receive descriptor context into a structure and keep context in a single array rather than five to improve locality of reference Signed-off-by: Rob Rice <rob.rice@broadcom.com> Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'include/dt-bindings')
0 files changed, 0 insertions, 0 deletions
y P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'sound/core/seq/seq_midi_emul.c')