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Commit 56ebfff5 authored by Will McVicker's avatar Will McVicker Committed by Will Mcvicker
Browse files

ANDROID: GKI: panic: add vendor callback function in panic() 



Each vendor might want to implement some debug code when the kernel
panics. So, add a vendor_panic_cb callback for vendors to implement.

Bug: 149258398
Test: compile
Change-Id: I7a374b0089f72c2511db6fe3b8cdd18f41a1eb6c
Signed-off-by: default avatarSaravana Kannan <saravanak@google.com>
(cherry picked from commit 911d9c70c2c50b0383ed0b652bb84ca8832e4a2b)
Signed-off-by: default avatarWill McVicker <willmcvicker@google.com>
[willmcvicker: only pulled in the ABI diffs]
parent 7de8e1e4

include/linux/kernel.h

+1 −0
Original line number Diff line number Diff line
@@ -323,6 +323,7 @@ static inline void might_fault(void) { } 
#endif



extern struct atomic_notifier_head panic_notifier_list;

extern void (*vendor_panic_cb)(u64 sp);

extern long (*panic_blink)(int state);

__printf(1, 2)

void panic(const char *fmt, ...) __noreturn __cold;

kernel/panic.c

+5 −1
Original line number Diff line number Diff line
@@ -47,9 +47,11 @@ int panic_timeout = CONFIG_PANIC_TIMEOUT; 
EXPORT_SYMBOL_GPL(panic_timeout);



ATOMIC_NOTIFIER_HEAD(panic_notifier_list);



EXPORT_SYMBOL(panic_notifier_list);



void (*vendor_panic_cb)(u64 sp);

EXPORT_SYMBOL_GPL(vendor_panic_cb);



static long no_blink(int state)

{

	return 0;
@@ -177,6 +179,8 @@ void panic(const char *fmt, ...) 
	va_start(args, fmt);

	vsnprintf(buf, sizeof(buf), fmt, args);

	va_end(args);

	if (vendor_panic_cb)

		vendor_panic_cb(0);

	pr_emerg("Kernel panic - not syncing: %s\n", buf);

#ifdef CONFIG_DEBUG_BUGVERBOSE

	/*