[LTP] [PATCH 0/2] cgroup: Add tests for cgroupv2 cpu.max.burst

[Samir Mulani]

Hi all,

This patch series adds two new testcases to test the cgroupv2 cpu.max.burst
interface:

Patch 1 adds cpu_max_burst01 to test the basic functionality of cpu.max.burst.
It checks default values, read/write boundaries, stat accounting (nr_bursts
and burst_usec in cpu.stat), dynamic updates, and making sure the burst value
is preserved when quota is removed or period is changed.

Patch 2 adds cpu_max_burst_invalid01 to test invalid inputs to cpu.max.burst.
It checks that values like burst > quota, negative values, sum overflow,
garbage strings, and trailing characters are rejected with EINVAL and do
not change the saved burst value.

Both tests are written using the new LTP API and require CONFIG_CFS_BANDWIDTH=y
and the cgroupv2 cpu controller.

Thanks,
Samir Mulani

Samir Mulani (2):
  cgroup: Add cgroup_burst01 test
  cgroup: Add invalid burst test

 runtest/controllers                           |   2 +
 .../kernel/controllers/cgroup/.gitignore      |   2 +
 .../controllers/cgroup/cpu_max_burst01.c      | 650 ++++++++++++++++++
 .../cgroup/cpu_max_burst_invalid01.c          | 417 +++++++++++
 4 files changed, 1071 insertions(+)
 create mode 100644 testcases/kernel/controllers/cgroup/cpu_max_burst01.c
 create mode 100644 testcases/kernel/controllers/cgroup/cpu_max_burst_invalid01.c

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2.53.0