From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Maarten Lankhorst <dev@lankhorst.se>
Cc: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
linux-rt-devel@lists.linux.dev, dri-devel@lists.freedesktop.org
Subject: Re: [i915-rt v6 24/24] FOR-CI: bump MAX_STACK_TRACE_ENTRIES
Date: Tue, 24 Feb 2026 15:15:42 +0100 [thread overview]
Message-ID: <20260224141542.cDL_xEWb@linutronix.de> (raw)
In-Reply-To: <20260220083657.28815-50-dev@lankhorst.se>
On 2026-02-20 09:37:22 [+0100], Maarten Lankhorst wrote:
> We're hitting a bug in CI where MAX_STACK_TRACE_ENTRIES is set too low.
> My guess is the repeated loading/unloading is creating multiples of the
> same entries. As a hack just reset lockdep. This might only be necessary
> for CI + PREEMPT_RT.
spinlock_t on PREEMPT_RT uses the rtmutex which from lockdep's point of
view counts twice: The "logical" lock and the inner wait lock. That
makes twice as many locks. I hope it is this and not some accounting
error…
> Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Sebastian
next prev parent reply other threads:[~2026-02-24 14:15 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-20 8:36 [i915-rt v6 00/24] drm/i915/display: All patches to make PREEMPT_RT work on i915 + xe Maarten Lankhorst
2026-02-20 8:36 ` [i915-rt v6 01/24] drm/vblank_work: Add methods to schedule vblank_work in 2 stages Maarten Lankhorst
2026-02-20 12:24 ` [i915-rt v6.1 1/1] " Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 02/24] drm/vblank: Add a 2-stage version of drm_crtc_arm_vblank_event Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 03/24] drm/intel/display: Make intel_crtc_arm_vblank_event static Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 04/24] drm/intel/display: Convert vblank event handling to 2-stage arming Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 05/24] drm/i915/display: Move vblank put until after critical section Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 06/24] drm/i915/display: Remove locking from intel_vblank_evade " Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 07/24] drm/i915/display: Handle vlv dsi workaround in scanline_in_safe_range too Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 08/24] drm/i915: Use preempt_disable/enable_rt() where recommended Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 09/24] drm/i915/display: Make get_vblank_counter use intel_de_read_fw() Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 10/24] drm/i915/display: Do not take uncore lock in i915_get_vblank_counter Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 11/24] drm/i915/display: Make icl_dsi_frame_update use _fw too Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 12/24] drm/i915/display: Use intel_de_read/write_fw in colorops Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 13/24] drm/i915/display: Use intel_de_write_fw in intel_pipe_fastset Maarten Lankhorst
2026-02-25 9:25 ` Jani Nikula
2026-02-25 11:59 ` Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 14/24] drm/i915/display: Make set_pipeconf use the fw variants Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 15/24] drm/i915/display: Fix intel_lpe_audio_irq_handler for PREEMPT-RT Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 16/24] drm/i915/gt: Use spin_lock_irq() instead of local_irq_disable() + spin_lock() Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 17/24] drm/i915: Drop the irqs_disabled() check Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 18/24] drm/i915/guc: Consider also RCU depth in busy loop Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 19/24] drm/i915/gt: Fix selftests on PREEMPT_RT Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 20/24] drm/i915/gt: Set stop_timeout() correctly on PREEMPT-RT Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 21/24] drm/i915/display: Remove uncore lock from vlv_atomic_update_fifo Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 22/24] Revert "drm/i915: Depend on !PREEMPT_RT." Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 23/24] PREEMPT_RT injection Maarten Lankhorst
2026-02-20 8:37 ` [i915-rt v6 24/24] FOR-CI: bump MAX_STACK_TRACE_ENTRIES Maarten Lankhorst
2026-02-24 14:15 ` Sebastian Andrzej Siewior [this message]
2026-02-25 12:32 ` Maarten Lankhorst
2026-02-24 16:27 ` [i915-rt v6 00/24] drm/i915/display: All patches to make PREEMPT_RT work on i915 + xe Sebastian Andrzej Siewior
2026-02-24 16:59 ` Sebastian Andrzej Siewior
2026-02-25 7:58 ` Sebastian Andrzej Siewior
2026-02-25 12:15 ` Maarten Lankhorst
2026-02-25 20:06 ` Maarten Lankhorst
2026-02-26 12:07 ` Sebastian Andrzej Siewior
2026-02-26 14:19 ` Sebastian Andrzej Siewior
2026-02-26 14:38 ` Sebastian Andrzej Siewior
2026-03-05 10:19 ` Maarten Lankhorst
2026-03-05 10:42 ` Maarten Lankhorst
2026-03-05 10:50 ` Sebastian Andrzej Siewior
2026-03-05 11:11 ` Maarten Lankhorst
2026-03-05 11:19 ` Sebastian Andrzej Siewior
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