s390/qdio: remove internal polling in non-thinint path

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For non-thinint devices in LPAR, qdio polls an idle Input Queue for a
little while to catch more work. But platform support for thinints has
been around practically _forever_ by now, so this micro-optimization is
seeing 0 actual use. Remove it to reduce the overall complexity of the
hot path.

In the meantime we also grew support for driver-level polling
(eg. NAPI in qeth), so it's quite questionable how useful this would
actually be on current kernels.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Julian Wiedmann 2020-06-16 14:13:00 +02:00 • committed by Heiko Carstens

parent 2bbf282a5e

commit a709423f7a

2 changed files with 2 additions and 27 deletions

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3

drivers/s390/cio/qdio.h

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26

drivers/s390/cio/qdio_main.c

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