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| author | 2017-03-09 10:21:55 -0600 | |
|---|---|---|
| committer | 2017-03-16 21:52:08 +0100 | |
| commit | f9c56536d50b4c55d42d7fb3396501906f7518fa (patch) | |
| tree | 1120179a31fe31bbcce287fb85be88f5ad956fce /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | gpio: ath79: make use of raw_spinlock variants (diff) | |
gpio: etraxfs: make use of raw_spinlock variants
The etraxfs gpio driver currently implements an irq_chip for handling
interrupts; due to how irq_chip handling is done, it's necessary for the
irq_chip methods to be invoked from hardirq context, even on a a
real-time kernel. Because the spinlock_t type becomes a "sleeping"
spinlock w/ RT kernels, it is not suitable to be used with irq_chips.
A quick audit of the operations under the lock reveal that they do only
minimal, bounded work, and are therefore safe to do under a raw spinlock.
Signed-off-by: Julia Cartwright <julia@ni.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions
