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[v3,0/2] rt-tests: cyclictest: Add option to specify main pid affinity

Message ID cover.1616702706.git.schwenderjonathan@gmail.com
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Series rt-tests: cyclictest: Add option to specify main pid affinity | expand

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Jonathan Schwender March 25, 2021, 8:18 p.m. UTC 
Hi John,

Changes in v3:
Rebased onto latest commit 95066b1a1a0a ("cyclicdeadline.c: Fix printf format specifier")
in unstable/devel/latest.


This patch adds the option --mainaffinity to specify the affinity of
the main pid.
This is mainly useful if you want to bind the main thread to a
different (e.g. housekeeping ) CPU than the measurement threads.

Some numbers on potential latency benefits are linked in the
v1 thread at https://lore.kernel.org/linux-rt-users/dd40b81d-7099-7740-c2ad-64b49e582234@gmail.com/

Regards

Jonathan


Jonathan Schwender (2):
  cyclictest: Move main pid setaffinity handling into a function
  cyclictest: Add --mainaffinity=[CPUSET] option.

 src/cyclictest/cyclictest.c | 28 +++++++++++++++++++---------
 src/include/rt-numa.h       |  2 ++
 src/lib/rt-numa.c           | 11 +++++++++++
 3 files changed, 32 insertions(+), 9 deletions(-)