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authorStafford Horne <shorne@gmail.com>2017-07-24 21:55:16 +0900
committerStafford Horne <shorne@gmail.com>2017-11-03 14:01:16 +0900
commit78cdfb5cf15e0f9fb4c2a9176a13a907a1d024f0 (patch)
treeaba15bb0ca2fab3ec50d75d48944bc209589ac99 /arch/openrisc/Kconfig
parenteecac38b0423a69715073ecbde581dafd1abb28b (diff)
downloadlinux-78cdfb5cf15e0f9fb4c2a9176a13a907a1d024f0.tar.bz2
openrisc: enable LOCKDEP_SUPPORT and irqflags tracing
Lockdep is needed for proving the spinlocks and rwlocks work fine on our platform. It also requires calling the trace_hardirqs_off() and trace_hardirqs_on() pair of routines when entering and exiting an interrupt. For OpenRISC the interrupt stack frame does not support frame pointers, so to call trace_hardirqs_on() and trace_hardirqs_off() here the macro's build up a stack frame each time. There is one necessary small change in _sys_call_handler to move interrupt enabling later so they can get re-enabled during syscall restart. This was done to fix lockdep warnings that are now possible due to this patch. Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'arch/openrisc/Kconfig')
-rw-r--r--arch/openrisc/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 399f55e82dcb..f8cfb3ba9e89 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -64,6 +64,9 @@ config GENERIC_CSUM
config STACKTRACE_SUPPORT
def_bool y
+config LOCKDEP_SUPPORT
+ def_bool y
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"