diff options
| author | Bartosz Golaszewski <brgl@bgdev.pl> | 2018-11-09 18:21:32 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-13 09:35:31 +0000 |
| commit | 06459901d55ee2f690b8e1fe084fb03061d617cf (patch) | |
| tree | 80ca6e836924930684dfaa8ee308267ad71e5e5e /include | |
| parent | 81b1e6e6a8590a19257e37a1633bec098d499c57 (diff) | |
irq/irq_sim: Store multiple interrupt offsets in a bitmap
Two threads can try to fire the irq_sim with different offsets and will
end up fighting for the irq_work asignment. Thomas Gleixner suggested a
solution based on a bitfield where we set a bit for every offset
associated with an interrupt that should be fired and then iterate over
all set bits in the interrupt handler.
This is a slightly modified solution using a bitmap so that we don't
impose a limit on the number of interrupts one can allocate with
irq_sim.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/irq_sim.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/irq_sim.h b/include/linux/irq_sim.h index 630a57e55db6..4500d453a63e 100644 --- a/include/linux/irq_sim.h +++ b/include/linux/irq_sim.h @@ -16,7 +16,7 @@ struct irq_sim_work_ctx { struct irq_work work; - int irq; + unsigned long *pending; }; struct irq_sim_irq_ctx { |