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/openbmc/linux/tools/testing/selftests/rcutorture/configs/rcu/
H A DTRACE02e1eb075c Tue Sep 15 16:33:38 CDT 2020 Paul E. McKenney <paulmck@kernel.org> rcutorture: Make preemptible TRACE02 enable lockdep

Currently, the CONFIG_PREEMPT_NONE=y rcutorture TRACE01 rcutorture
scenario enables lockdep. This limits its ability to find bugs due to
non-preemptible sections of code being RCU readers, and pretty much all
code thus appearing to lockdep to be an RCU reader. This commit therefore
moves lockdep testing to the CONFIG_PREEMPT=y rcutorture TRACE02 scenario.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
H A DTRACE01e1eb075c Tue Sep 15 16:33:38 CDT 2020 Paul E. McKenney <paulmck@kernel.org> rcutorture: Make preemptible TRACE02 enable lockdep

Currently, the CONFIG_PREEMPT_NONE=y rcutorture TRACE01 rcutorture
scenario enables lockdep. This limits its ability to find bugs due to
non-preemptible sections of code being RCU readers, and pretty much all
code thus appearing to lockdep to be an RCU reader. This commit therefore
moves lockdep testing to the CONFIG_PREEMPT=y rcutorture TRACE02 scenario.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
/openbmc/linux/drivers/gpu/drm/i915/gt/
H A Dintel_rps.ce1eb075c Wed Apr 15 12:03:18 CDT 2020 Chris Wilson <chris@chris-wilson.co.uk> drm/i915/gt: Update PMINTRMSK holding fw

If we use a non-forcewaked write to PMINTRMSK, it does not take effect
until much later, if at all, causing a loss of RPS interrupts and no GPU
reclocking, leaving the GPU running at the wrong frequency for long
periods of time.

Reported-by: Francisco Jerez <currojerez@riseup.net>
Suggested-by: Francisco Jerez <currojerez@riseup.net>
Fixes: 35cc7f32c298 ("drm/i915/gt: Use non-forcewake writes for RPS")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Francisco Jerez <currojerez@riseup.net>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Cc: <stable@vger.kernel.org> # v5.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20200415170318.16771-2-chris@chris-wilson.co.uk
(cherry picked from commit a080bd994c4023042a2b605c65fa10a25933f636)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>