[v5,0/1] Add thread affinity
mbox series

Message ID 20241016084449.3566589-1-chenghaoyang@chromium.org
Headers show
Series
  • Add thread affinity
Related show

Message

Cheng-Hao Yang Oct. 16, 2024, 8:43 a.m. UTC 
Hi folks,

This patch adds a method to set thread affinity, which is needed to
ensure performance in mtkisp7 pipeline handler and IPA.

This passes gitlab pipeline:
https://gitlab.freedesktop.org/chenghaoyang/libcamera/-/pipelines/1291081

v5:
- Return failure if any index is invalid.
- Drop the check of max size.

v4:
- Use `sizeof(data_->cpuset_.value())`.

v3:
- Keep the cpu indices in ThreadData.

v2:
- Check cpu indices within [0, `std::thread::hardware_concurrency()`).
- Limit max size of cpus to be CPU_SETSIZE.

BR,
Harvey


Han-Lin Chen (1):
  libcamera: add method to set thread affinity

 include/libcamera/base/thread.h |  5 ++++
 src/libcamera/base/thread.cpp   | 46 +++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)