IB/qib: Add percpu counter replacing qib_devdata int_counter

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This patch replaces the dd->int_counter with a percpu counter.

The maintanance of qib_stats.sps_ints and int_counter are
combined into the new counter.

There are two new functions added to read the counter:
- qib_int_counter (for a particular qib_devdata)
- qib_sps_ints (for all HCAs)

A z_int_counter is added to allow the interrupt detection logic
to determine if interrupts have occured since z_int_counter
was "reset".

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

...

This commit is contained in:

Mike Marciniszyn 2014-03-07 08:40:49 -05:00 • committed by Roland Dreier

parent f8b6c47a44

commit 1ed88dd7d0

6 changed files with 59 additions and 34 deletions

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10

drivers/infiniband/hw/qib/qib.h

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1

drivers/infiniband/hw/qib/qib_fs.c

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7

drivers/infiniband/hw/qib/qib_iba6120.c

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8

drivers/infiniband/hw/qib/qib_iba7220.c

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31

drivers/infiniband/hw/qib/qib_iba7322.c

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36

drivers/infiniband/hw/qib/qib_init.c

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