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ANDROID: vendor_hooks: Add vendor hooks for getting printk messages

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When sudden reset by watchdog occurs, kernel log is very helpful.
But the log has saved structure type in log_buf.
So we want to collect the log on runtime to string format at other
reserved memory.

Bug: 167766040

Change-Id: Ic9686acc7c284e2ab81395fb9cc076fafe142bf9
Signed-off-by: Changki Kim <changki.kim@samsung.com>
This commit is contained in:
Changki Kim 2020-09-04 15:47:31 +09:00 • committed by Todd Kjos
commit bad091cc4b
3 changed files with 9 additions and 0 deletions
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5
include/trace/hooks/debug.h
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@ -15,8 +15,13 @@ struct pt_regs;
DECLARE_HOOK(android_vh_ipi_stop,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs))
DECLARE_HOOK(android_vh_printk_store,
TP_PROTO(int facility, int level),
TP_ARGS(facility, level))
#else
#define trace_android_vh_ipi_stop(regs)
#define trace_android_vh_printk_store(facility, level)
#endif
#endif /* _TRACE_HOOK_DEBUG_H */