linux.git/tools/testing/selftests/rcutorture, branch master

torture: Allow "norm" abbreviation for "normal"

2026-05-24T07:38:59+00:00

This adds "--do-norm", --do-no-norm", and "--no-norm" synonyms for the
"--do-normal" group of torture.sh command-line arguments.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Uladzislau Rezki (Sony)

torture: Improve kvm-series.sh header comment

2026-05-24T07:38:53+00:00

The constraints on the arguments to kvm-series.sh are easy to forget,
so this commit adds examples in the header comment.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Uladzislau Rezki (Sony)

rcutorture: Add NOCB02 config for nocb poll mode testing

2026-03-30T19:48:14+00:00

Add new rcutorture config NOCB02 that enables rcu_nocb_poll boot
parameter combined with CONFIG_RCU_NOCB_CPU to exercise the polling
mode code paths in the NOCB implementation.

This config exercises poll-mode paths not covered by other configs,
where callback invocation uses active polling instead of kthread
wakeups.

This config is not added to CFLIST to avoid increasing the default
test duration; it can be run explicitly when poll-mode testing
is needed.

Acked-by: Frederic Weisbecker 
Reviewed-by: Paul E. McKenney 
Tested-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

rcutorture: Add NOCB01 config for RCU_LAZY torture testing

2026-03-30T19:48:14+00:00

Add new rcutorture config NOCB01 that enables CONFIG_RCU_LAZY combined
with CONFIG_RCU_NOCB_CPU to exercise the lazy callback code paths in
the NOCB implementation.

This config exercises lazy callback paths not covered by other configs,
including lazy-only wake and lazy defer logic.

This config is not added to CFLIST to avoid increasing the default
test duration; it can be run explicitly when lazy callback testing
is needed.

Acked-by: Frederic Weisbecker 
Reviewed-by: Paul E. McKenney 
Tested-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

rcuscale: Ditch rcu_scale_shutdown in favor of torture_shutdown_init()

2026-03-30T19:48:13+00:00

The torture_shutdown_init() function spawns a shutdown kthread in
a manner very similar to that implemented by rcu_scale_shutdown().
This commit therefore re-implements rcu_scale_shutdown() in terms of
torture_shutdown_init().

This patch was generated by Claude given as input the patch making the
same transformation of ref_scale_shutdown().

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

refscale: Ditch ref_scale_shutdown in favor of torture_shutdown_init()

2026-03-30T19:48:13+00:00

The torture_shutdown_init() function spawns a shutdown kthread in
a manner very similar to that implemented by ref_scale_shutdown().
This commit therefore re-implements ref_scale_shutdown in terms of
torture_shutdown_init().

The initial draft of this patch was generated by version 2.1.16 of the
Claude AI/LLM, but trained and configured for use by my employer, and
prompted to refer to Linux-kernel source code.  This initial draft failed
to provide a forward reference to ref_scale_cleanup(), passed zero to
torture_shutdown_init() for an unwelcome insta-shutdown, and failed to
pass the kvm.sh --duration argument in as a refscale module parameter.
On the other hand, it did catch the need to NULL main_task on the
post-test self-shutdown code path, which I might well have forgotten
to do.

This version of the patch fixes those problems, and in fact very little
of the initial draft remains.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

rcutorture: Fix numeric "test" comparison in srcu_lockdep.sh

2026-03-30T19:48:13+00:00

This commit switches from "-eq" to "=" to handle the non-numeric
comparisons in srcu_lockdep.sh.  While in the area, adjust SRCU flavor
to improve coverage.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

torture: Print informative message for test without recheck file

2026-03-30T19:48:13+00:00

If a type of torture test lacks a recheck file, a bash diagnostic is
printed, which looks like a torture-test bug.  This commit gets rid of
this false positive by explicitly checking for the file, invoking it if
it exists, otherwise printing an informative non-diagnostic message.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

torture: Make hangs more visible in torture.sh output

2026-03-30T19:48:13+00:00

This commit labels "QEMU killed" lines so that they will be picked up
by torture.sh processing.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes

kvm-check-branches.sh: Remove in favor of kvm-series.sh

2026-03-30T19:48:13+00:00

The kvm-series.sh script is an order-of-magnitude optimization of
kvm-check-branches.sh, so remove the old script.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Joel Fernandes