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ANDROID: vendor_hooks: Add vendor hooks for key combination

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When some problems happened in android, we can't use adb command because
android can be abnormal state. And we can't use uart because
uart pin is not connected in the board. So we need key combination
functions for debugging.
This function should only use in development environment.
In the market, this will be disabled.

Bug: 167516783

Signed-off-by: Changki Kim <changki.kim@samsung.com>
Change-Id: I1cbbc93642fb45da161eee983380e48045153a66
[ Added "#ifdef __GENKSYMS__" around the include <<trace/hooks/debug.h>
to prevent CRC errors due to visibility of struct trace_eval_map ]
Signed-off-by: Todd Kjos <tkjos@google.com>
This commit is contained in:
Changki Kim 2020-09-02 17:54:56 +09:00 committed by Todd Kjos
parent a564726277
commit 72f2bc5fc2
3 changed files with 14 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -55,3 +55,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alter_rwsem_list_add);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alter_futex_plist_add);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_is_fpsimd_save);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ipi_stop);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_input_handle_event);

5
drivers/input/input.c
View File

@ -26,6 +26,10 @@
#include "input-compat.h"
#include "input-poller.h"
#ifndef __GENKSYMS__
#include <trace/hooks/debug.h>
#endif
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_DESCRIPTION("Input core");
MODULE_LICENSE("GPL");
@ -438,6 +442,7 @@ void input_event(struct input_dev *dev,
if (is_event_supported(type, dev->evbit, EV_MAX)) {
spin_lock_irqsave(&dev->event_lock, flags);
trace_android_vh_input_handle_event(dev, type, code, value);
input_handle_event(dev, type, code, value);
spin_unlock_irqrestore(&dev->event_lock, flags);
}

8
include/trace/hooks/debug.h
View File

@ -12,11 +12,19 @@
#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_ANDROID_VENDOR_HOOKS)
struct pt_regs;
DECLARE_HOOK(android_vh_ipi_stop,
TP_PROTO(struct pt_regs *regs),
TP_ARGS(regs))
struct input_dev;
DECLARE_HOOK(android_vh_input_handle_event,
TP_PROTO(struct input_dev *dev, unsigned int type,
unsigned int code, int value),
TP_ARGS(dev, type, code, value))
#else
#define trace_android_vh_ipi_stop(regs)
#define trace_android_vh_input_handle_event(dev, type, code, value)
#endif
#endif /* _TRACE_HOOK_DEBUG_H */