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/oss/ad1848.h

#include <linux/interrupt.h>

#define AD_F_CS4231     0x0001  /* Returned if a CS4232 (or compatible) detected */
#define AD_F_CS4248     0x0001  /* Returned if a CS4248 (or compatible) detected */

#define         AD1848_SET_XTAL         1
#define         AD1848_MIXER_REROUTE    2

#define AD1848_REROUTE(oldctl, newctl) \
                ad1848_control(AD1848_MIXER_REROUTE, ((oldctl)<<8)|(newctl))
		

int ad1848_init(char *name, struct resource *ports, int irq, int dma_playback,
	int dma_capture, int share_dma, int *osp, struct module *owner);
void ad1848_unload (int io_base, int irq, int dma_playback, int dma_capture, int share_dma);

int ad1848_detect (struct resource *ports, int *flags, int *osp);
int ad1848_control(int cmd, int arg);

void attach_ms_sound(struct address_info * hw_config, struct resource *ports, struct module * owner);

int probe_ms_sound(struct address_info *hw_config, struct resource *ports);
void unload_ms_sound(struct address_info *hw_info);