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selftests: drv-net: iou-zcrx: allocate hugepages for large chunks test

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The large chunks test needs 2MB hugepages for its mmap allocation,
but the test system may not have any pre-allocated. Ensure at least
64 hugepages are available before running the test, and restore the
original value on cleanup.

While at it strip the stdout, it has a trailing new line.

Before: ok 5 iou-zcrx.test_zcrx_large_chunks # SKIP Can't allocate huge pages
Link: https://patch.msgid.link/20260227171305.2848240-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2026-02-27 09:13:05 -08:00
parent 67792dde27
commit c7b228418e
1 changed files with 9 additions and 1 deletions
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10
tools/testing/selftests/drivers/net/hw/iou-zcrx.py
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@ -135,13 +135,21 @@ def test_zcrx_large_chunks(cfg) -> None:
cfg.require_ipver('6')
hp_file = "/proc/sys/vm/nr_hugepages"
with open(hp_file, 'r+', encoding='utf-8') as f:
nr_hugepages = int(f.read().strip())
if nr_hugepages < 64:
f.seek(0)
f.write("64")
defer(lambda: open(hp_file, 'w', encoding='utf-8').write(str(nr_hugepages)))
single(cfg)
rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.target} -x 2"
tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {cfg.port} -l 12840"
probe = cmd(rx_cmd + " -d", fail=False)
if probe.ret == SKIP_CODE:
raise KsftSkipEx(probe.stdout)
raise KsftSkipEx(probe.stdout.strip())
with bkg(rx_cmd, exit_wait=True):
wait_port_listen(cfg.port, proto="tcp")