net: Restrict receive packets queuing to housekeeping CPUs

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With the existing implementation of store_rps_map(), packets are queued
in the receive path on the backlog queues of other CPUs irrespective of
whether they are isolated or not. This could add a latency overhead to
any RT workload that is running on the same CPU.

Ensure that store_rps_map() only uses available housekeeping CPUs for
storing the rps_map.

Signed-off-by: Alex Belits <abelits@marvell.com>
Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200625223443.2684-4-nitesh@redhat.com

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Alex Belits 2020-06-25 18:34:43 -04:00 • committed by Peter Zijlstra

parent 69a18b1869

commit 07bbecb341

1 changed files with 9 additions and 1 deletions

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net/core/net-sysfs.c

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