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| author |   Samuel Holland <samuel@sholland.org> | 2022-07-01 15:00:56 -0500 |
|---|---|---|
| committer |   Marc Zyngier <maz@kernel.org> | 2022-07-07 09:38:04 +0100 |
| commit | aa0813581b8d37bdd91cd40b67ef79ffa45104b2 (patch) | |
| tree | 46ac9b881b3a2ed8a57661b83bb5a408447d83b2 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | genirq: Return a const cpumask from irq_data_get_affinity_mask (diff) | |
| download | wireguard-linux-aa0813581b8d37bdd91cd40b67ef79ffa45104b2.tar.xz wireguard-linux-aa0813581b8d37bdd91cd40b67ef79ffa45104b2.zip | |
genirq: Provide an IRQ affinity mask in non-SMP configs
IRQ affinity masks are not allocated in uniprocessor configurations.
This requires special case non-SMP code in drivers for irqchips which
have per-CPU enable or mask registers.
Since IRQ affinity is always the same in a uniprocessor configuration,
we can provide a correct affinity mask without allocating one per IRQ.
By returning a real cpumask from irq_data_get_affinity_mask even when
SMP is disabled, irqchip drivers which iterate over that mask will
automatically do the right thing.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220701200056.46555-9-samuel@sholland.org
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions