tree 7e8de90dca98d514bde6ec83674188f8cefca897
parent 2681f0184276d7fc934b6866a5a267f5b3369f7d
author Mark Rutland <mark.rutland@arm.com> 1489142774 +0000
committer Will Deacon <will.deacon@arm.com> 1490980802 +0100

drivers/perf: arm_pmu: manage interrupts per-cpu

When requesting or freeing interrupts, we use platform_get_irq() to find
relevant irqs, backing this up with additional information in an
optional irq_affinity table.

This means that our irq request and free paths are tied to a
platform_device, and our request path must jump through a number of
hoops in order to determine the required affinity of each interrupt.

Given that the affinity must be static, we can compute the affinity once
up-front at probe time, simplifying the irq request and free paths. By
recording interrupts in a per-cpu data structure, we simplify a few
paths, and permit a subsequent rework of the request and free paths.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
[will: rename local nr_irqs variable to avoid conflict with global]
Signed-off-by: Will Deacon <will.deacon@arm.com>