Commit 000591f1 authored by Guo Ren's avatar Guo Ren
Browse files

csky: Enable LOCKDEP_SUPPORT 



Lockdep is needed by proving the spinlocks and rwlocks. Currently,
we only put trace_hardirqs_on/off with csky_irq and
ret_from_exception.

Signed-off-by: default avatarGuo Ren <guoren@linux.alibaba.com>
parent de863678

arch/csky/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -69,6 +69,9 @@ config CSKY 
	select PCI_SYSCALL if PCI

	select PCI_MSI if PCI



config LOCKDEP_SUPPORT

	def_bool y



config CPU_HAS_CACHEV2

	bool

arch/csky/kernel/entry.S

+11 −0
Original line number Diff line number Diff line
@@ -225,6 +225,13 @@ ret_from_exception: 
	cmpnei	r12, 0

	bt	exit_work

1:

#ifdef CONFIG_TRACE_IRQFLAGS

	ld	r10, (sp, LSAVE_PSR)

	btsti	r10, 6

	bf	2f

	jbsr	trace_hardirqs_on

2:

#endif

	RESTORE_ALL



exit_work:
@@ -280,6 +287,10 @@ ENTRY(csky_irq) 
	zero_fp

	psrset	ee



#ifdef CONFIG_TRACE_IRQFLAGS

	jbsr	trace_hardirqs_off

#endif



#ifdef CONFIG_PREEMPTION

	mov	r9, sp			/* Get current stack  pointer */

	bmaski	r10, THREAD_SHIFT

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