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authorMathias Krause <minipli@googlemail.com>2017-09-08 20:57:11 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2017-10-07 12:10:32 +0800
commit350ef88e7e922354f82a931897ad4a4ce6c686ff (patch)
tree1a4e182954c15959d059660ba124117c172fe5a3 /drivers/fsi
parentcf5868c8a22dc2854b96e9569064bb92365549ca (diff)
padata: ensure padata_do_serial() runs on the correct CPU
If the algorithm we're parallelizing is asynchronous we might change CPUs between padata_do_parallel() and padata_do_serial(). However, we don't expect this to happen as we need to enqueue the padata object into the per-cpu reorder queue we took it from, i.e. the same-cpu's parallel queue. Ensure we're not switching CPUs for a given padata object by tracking the CPU within the padata object. If the serial callback gets called on the wrong CPU, defer invoking padata_reorder() via a kernel worker on the CPU we're expected to run on. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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