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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: Guo Ren <guoren@linux.alibaba.com>
This commit is contained in:
Guo Ren 2020-04-02 19:39:42 +08:00
parent de86367871
commit 000591f1ca
2 changed files with 14 additions and 0 deletions
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3
arch/csky/Kconfig
View File

@ -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

11
arch/csky/kernel/entry.S
View File

@ -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