rcutorture: Add --kill-previous option to terminate previous kvm.sh runs

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When kvm.sh is killed, its child processes (make, gcc, qemu, etc.) may
continue running. This prevents new kvm.sh instances from starting even
though the parent is gone.

Add a --kill-previous option that uses fuser(1) to terminate all
processes holding the flock file before attempting to acquire it. This
provides a clean way to recover from stale/zombie kvm.sh runs which
sometimes may have lots of qemu and compiler processes still disturbing.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>

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Joel Fernandes 2026-01-01 11:34:17 -05:00 • committed by Boqun Feng

parent a590a79d19

commit cf587c6ff2

1 changed files with 24 additions and 1 deletions

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tools/testing/selftests/rcutorture/bin/kvm.sh

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