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| author |   Peter Zijlstra <peterz@infradead.org> | 2020-05-25 12:22:41 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-07-10 12:00:02 +0200 |
| commit | a21ee6055c30ce68c4e201c6496f0ed2a1936230 (patch) | |
| tree | 0d929fda0e9821d2cec6181291a7ad398d68bbf1 /kernel/fork.c | |
| parent | arm: Break cyclic percpu include (diff) | |
| download | linux-dev-a21ee6055c30ce68c4e201c6496f0ed2a1936230.tar.xz linux-dev-a21ee6055c30ce68c4e201c6496f0ed2a1936230.zip | |
lockdep: Change hardirq{s_enabled,_context} to per-cpu variables
Currently all IRQ-tracking state is in task_struct, this means that
task_struct needs to be defined before we use it.
Especially for lockdep_assert_irq*() this can lead to header-hell.
Move the hardirq state into per-cpu variables to avoid the task_struct
dependency.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200623083721.512673481@infradead.org
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index efc5493203ae..70d9d0a4de2a 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1954,8 +1954,8 @@ static __latent_entropy struct task_struct *copy_process( rt_mutex_init_task(p); + lockdep_assert_irqs_enabled(); #ifdef CONFIG_PROVE_LOCKING - DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled); DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled); #endif retval = -EAGAIN; @@ -2036,7 +2036,6 @@ static __latent_entropy struct task_struct *copy_process( #endif #ifdef CONFIG_TRACE_IRQFLAGS p->irq_events = 0; - p->hardirqs_enabled = 0; p->hardirq_enable_ip = 0; p->hardirq_enable_event = 0; p->hardirq_disable_ip = _THIS_IP_; @@ -2046,7 +2045,6 @@ static __latent_entropy struct task_struct *copy_process( p->softirq_enable_event = 0; p->softirq_disable_ip = 0; p->softirq_disable_event = 0; - p->hardirq_context = 0; p->softirq_context = 0; #endif |