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| author | Stafford Horne <shorne@gmail.com> | 2017-07-24 21:55:16 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2017-11-03 14:01:16 +0900 |
| commit | 78cdfb5cf15e0f9fb4c2a9176a13a907a1d024f0 (patch) | |
| tree | aba15bb0ca2fab3ec50d75d48944bc209589ac99 /arch/openrisc/Kconfig | |
| parent | eecac38b0423a69715073ecbde581dafd1abb28b (diff) | |
| download | linux-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/Kconfig | 3 |
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" |