mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 16:53:54 +08:00
c5c6ba4e08
Add the pm_trace attribute in /sys/power which has to be explicitly set to one to really enable the "PM tracing" code compiled in when CONFIG_PM_TRACE is set (which modifies the machine's CMOS clock in unpredictable ways). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
35 lines
759 B
C
35 lines
759 B
C
#ifndef RESUME_TRACE_H
|
|
#define RESUME_TRACE_H
|
|
|
|
#ifdef CONFIG_PM_TRACE
|
|
|
|
extern int pm_trace_enabled;
|
|
|
|
struct device;
|
|
extern void set_trace_device(struct device *);
|
|
extern void generate_resume_trace(void *tracedata, unsigned int user);
|
|
|
|
#define TRACE_DEVICE(dev) set_trace_device(dev)
|
|
#define TRACE_RESUME(user) do { \
|
|
if (pm_trace_enabled) { \
|
|
void *tracedata; \
|
|
asm volatile("movl $1f,%0\n" \
|
|
".section .tracedata,\"a\"\n" \
|
|
"1:\t.word %c1\n" \
|
|
"\t.long %c2\n" \
|
|
".previous" \
|
|
:"=r" (tracedata) \
|
|
: "i" (__LINE__), "i" (__FILE__)); \
|
|
generate_resume_trace(tracedata, user); \
|
|
} \
|
|
} while (0)
|
|
|
|
#else
|
|
|
|
#define TRACE_DEVICE(dev) do { } while (0)
|
|
#define TRACE_RESUME(dev) do { } while (0)
|
|
|
|
#endif
|
|
|
|
#endif
|