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| author | Ingo Molnar <mingo@kernel.org> | 2020-08-03 13:00:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-08-03 13:00:27 +0200 |
| commit | 992414a18cd4de05fa3f8ff7e1c29af758bdee1a (patch) | |
| tree | 60115684b3617ebb555678baf5d31a8d02d1df36 /kernel | |
| parent | a68415c27ff366970be132c266aa859ad706af33 (diff) | |
| parent | ed00495333ccc80fc8fb86fb43773c3c2a499466 (diff) | |
| download | lwn-992414a18cd4de05fa3f8ff7e1c29af758bdee1a.tar.gz lwn-992414a18cd4de05fa3f8ff7e1c29af758bdee1a.zip | |
Merge branch 'locking/nmi' into locking/core, to pick up completed topic branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/locking/lockdep.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 7b5800374c40..b4d34c9030df 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -3714,6 +3714,9 @@ void noinstr lockdep_hardirqs_on(unsigned long ip) * and not rely on hardware state like normal interrupts. */ if (unlikely(in_nmi())) { + if (!IS_ENABLED(CONFIG_TRACE_IRQFLAGS_NMI)) + return; + /* * Skip: * - recursion check, because NMI can hit lockdep; @@ -3773,7 +3776,10 @@ void noinstr lockdep_hardirqs_off(unsigned long ip) * they will restore the software state. This ensures the software * state is consistent inside NMIs as well. */ - if (unlikely(!in_nmi() && (current->lockdep_recursion & LOCKDEP_RECURSION_MASK))) + if (in_nmi()) { + if (!IS_ENABLED(CONFIG_TRACE_IRQFLAGS_NMI)) + return; + } else if (current->lockdep_recursion & LOCKDEP_RECURSION_MASK) return; /* |