Testing
=======
* Patch 1:
Fix for cpumask_local_spread() is tested by creating VFs, loading
iavf module and by adding a tracepoint to confirm that only housekeeping
CPUs are picked when an appropriate profile is set up and all remaining
CPUs when no CPU isolation is configured.
* Patch 2:
To test the PCI fix, I hotplugged a virtio-net-pci from qemu console
and forced its addition to a specific node to trigger the code path that
includes the proposed fix and verified that only housekeeping CPUs
are included via tracepoint.
* Patch 3:
To test the fix in store_rps_map(), I tried configuring an isolated
CPU by writing to /sys/class/net/en*/queues/rx*/rps_cpus which
resulted in 'write error: Invalid argument' error. For the case
where a non-isolated CPU is writing in rps_cpus the above operation
succeeded without any error.
Changes from v1:
===============
- Included the suggestions made by Bjorn Helgaas in the commit messages.
- Included the 'Reviewed-by' and 'Acked-by' received for Patch-2.
[1] https://patchwork.ozlabs.org/project/netdev/patch/51102eebe62336c6a4e584c7a503553b9f90e01c.camel@xxxxxxxxxxx/
Alex Belits (3):
lib: Restrict cpumask_local_spread to houskeeping CPUs
PCI: Restrict probe functions to housekeeping CPUs
net: Restrict receive packets queuing to housekeeping CPUs
drivers/pci/pci-driver.c | 5 ++++-
lib/cpumask.c | 43 +++++++++++++++++++++++-----------------
net/core/net-sysfs.c | 10 +++++++++-
3 files changed, 38 insertions(+), 20 deletions(-)
--
