lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING

When PROVE_RAW_LOCK_NESTING=y many of the selftests FAILED because
HARDIRQ context is out-of-bounds for spinlocks. Instead make the
default hardware context the threaded hardirq context, which preserves
the old locking rules.

The wait-type specific locking selftests will have a non-threaded
HARDIRQ variant.

Fixes: de8f5e4f2dc1 ("lockdep: Introduce wait-type checks")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210617190313.322096283@infradead.org

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 5c50b09..af12e84 100644 (file)
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -195,6 +195,7 @@ static void init_shared_classes(void)
 #define HARDIRQ_ENTER()                                \
        local_irq_disable();                    \
        __irq_enter();                          \
+       lockdep_hardirq_threaded();             \
        WARN_ON(!in_irq());
 
 #define HARDIRQ_EXIT()                         \