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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/softirq.c | |
| parent | arm: Break cyclic percpu include (diff) | |
| download | linux-a21ee6055c30ce68c4e201c6496f0ed2a1936230.tar.xz linux-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/softirq.c')
| -rw-r--r-- | kernel/softirq.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index c4201b7f42b1..342c53feaa7a 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -107,6 +107,12 @@ static bool ksoftirqd_running(unsigned long pending) * where hardirqs are disabled legitimately: */ #ifdef CONFIG_TRACE_IRQFLAGS + +DEFINE_PER_CPU(int, hardirqs_enabled); +DEFINE_PER_CPU(int, hardirq_context); +EXPORT_PER_CPU_SYMBOL_GPL(hardirqs_enabled); +EXPORT_PER_CPU_SYMBOL_GPL(hardirq_context); + void __local_bh_disable_ip(unsigned long ip, unsigned int cnt) { unsigned long flags; |