tracing: Fix hwlat kthread migration

The hwlat tracer creates a kernel thread at start of the tracer. It is
pinned to a single CPU and will move to the next CPU after each period of
running. If the user modifies the migration thread's affinity, it will not
change after that happens.

The original code created the thread at the first instance it was called,
but later was changed to destroy the thread after the tracer was finished,
and would not be created until the next instance of the tracer was
established. The code that initialized the affinity was only called on the
initial instantiation of the tracer. After that, it was not initialized, and
the previous affinity did not match the current newly created one, making
it appear that the user modified the thread's affinity when it did not, and
the thread failed to migrate again.

Cc: stable@vger.kernel.org
Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

path: root/sound/soc/kirkwood/Kconfig

config SND_KIRKWOOD_SOC
	tristate "SoC Audio for the Marvell Kirkwood and Dove chips"
	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
	depends on HAS_DMA
	help
	  Say Y or M if you want to add support for codecs attached to
	  the Kirkwood I2S interface. You will also need to select the
	  audio interfaces to support below.

config SND_KIRKWOOD_SOC_ARMADA370_DB
	tristate "SoC Audio support for Armada 370 DB"
	depends on SND_KIRKWOOD_SOC && (ARCH_MVEBU || COMPILE_TEST) && I2C
	select SND_SOC_CS42L51
	select SND_SOC_SPDIF
	help
	  Say Y if you want to add support for SoC audio on
	  the Armada 370 Development Board.