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Occasionally, the system can't come back up after suspend/resume due to problems of device suspending phase. This patch make PM_TRACE infrastructure cover device suspending phase of suspend/resume process, and the information in RTC can tell developers which device suspending function make system hang. Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
23 lines
572 B
C
23 lines
572 B
C
#ifndef _ASM_X86_PM_TRACE_H
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#define _ASM_X86_PM_TRACE_H
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#include <asm/asm.h>
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#define TRACE_RESUME(user) \
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do { \
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if (pm_trace_enabled) { \
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const void *tracedata; \
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asm volatile(_ASM_MOV " $1f,%0\n" \
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".section .tracedata,\"a\"\n" \
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"1:\t.word %c1\n\t" \
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_ASM_PTR " %c2\n" \
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".previous" \
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:"=r" (tracedata) \
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: "i" (__LINE__), "i" (__FILE__)); \
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generate_pm_trace(tracedata, user); \
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} \
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} while (0)
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#define TRACE_SUSPEND(user) TRACE_RESUME(user)
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#endif /* _ASM_X86_PM_TRACE_H */
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