From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o11.zoho.com (sender4-op-o11.zoho.com [136.143.188.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 31EF347ECFA for ; Thu, 4 Jun 2026 17:36:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780594589; cv=pass; b=puwCtBwVfikbZHcvIykm/eDSlQK4gf+m7pzaib1BGX16NvOUc54ypAtrLDX2IJCTuP9SN7/DPMtLDsN5NMdFqni3eGMJaO9DNCYtgTLL3XyTBLH9f1xpxDHo4f3wwwjokAGGy8jwys20Y1FKioNuzAM/7TV2p6IucxuxtaUQ8Ag= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780594589; c=relaxed/simple; bh=yQFd+P6jOKn9w/gjCgOnJ7DFA+npz7xs+KhEtC2Mz0E=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=b5N3/ldU5sp22O6ayklsdJCYOPZjwS/KDnYdeU2I5slcNHwsnsyiX8BXIwghMtImls07OWrN/821/J4tDOzug95WzT526GM1pC06W8xbfJgsgPDBAGDSF1/23Dsb+lz0zpRJtTeVYVILVJFC3wng02xuUKSCvPEQAkJUj5L18F8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b=cUsswTaj; arc=pass smtp.client-ip=136.143.188.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b="cUsswTaj" ARC-Seal: i=1; a=rsa-sha256; t=1780594562; cv=none; d=zohomail.com; s=zohoarc; b=gi8hkI2I4Nda4VA7U8VuJt1XQdSHr0CsdZ1/FtcAPBBZhv8/TGdQQSB8vzPe2xSKlWwqwKkLNXCtp9RpfvjxussKGFDeW4vLNBhi0RP4jmUKpElrj2kFC9km0TE96TDU53Pskw2suHKxyTrj/rq28lpgixmbxswq5xVhvABDwcQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1780594562; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=pGItgKzMIvC437rpGPy/yL1b1GrrGpxVuW/BG37KdmU=; b=ICOs3FMbhEnR9eKuueGvAZkF3OtnuuBiS5E9PoxoDbI2Zf7+vW7Cv4TEgk/zGbK5ApEOqCRSp7eadYtajZzM0gI7CcgEfSnppl71UYmU6wiQvVFyPlgpUF02HrnqnXcDyghDNHrCOKuhobiBEdQX/S02KbLEi9+yUkjImYPHfN4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=adrian.larumbe@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1780594562; s=zohomail; d=collabora.com; i=adrian.larumbe@collabora.com; h=From:From:Subject:Subject:Date:Date:Message-Id:Message-Id:MIME-Version:Content-Type:Content-Transfer-Encoding:To:To:Cc:Cc:Reply-To; bh=pGItgKzMIvC437rpGPy/yL1b1GrrGpxVuW/BG37KdmU=; b=cUsswTaj7MOEZoLLzW4n5RIdfbhAQIFVG3V1jIOkJu0jikIv56g6D/+a30IzatuL m4z+qaqSIkIqcne7kn2oyoh3Xt+ZFPyE3Z1VR2OtuEZ7Qqh+sHejW1lOYqEyeBqOTVb unjvtzE/0PdUJMvzQsqZiZS+oGGg8AoTFWRjPk4Y= Received: by mx.zohomail.com with SMTPS id 1780594560725224.75170710534178; Thu, 4 Jun 2026 10:36:00 -0700 (PDT) From: =?utf-8?q?Adri=C3=A1n_Larumbe?= Subject: [PATCH v2 0/7] RPM, perfcnt and other minor fixes for Panfrost Date: Thu, 04 Jun 2026 18:35:19 +0100 Message-Id: <20260604-claude-fixes-v2-0-57c6bd4c1655@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/1WNyw6CMBREf4XctTV9IKGu/A/D4lKuUlMpaaHRE P7dgnHh8mRmziwQKViKcC4WCJRstH7IIA8FmB6HOzHbZQbJZcVPUjHjcO6I3eyLIqtlyxUKVWJ tIE/GQHuQF9fmy3FuH2SmzbE1ehsnH977XxJb76eu/tVJMM5ERVoSYqlLfTHeOWx9wKPxT2jWd f0AHwtEg74AAAA= X-Change-ID: 20260523-claude-fixes-82b03a134a8c To: Boris Brezillon , Rob Herring , Steven Price , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Faith Ekstrand , "Marty E. Plummer" , Tomeu Vizoso , Eric Anholt , Alyssa Rosenzweig , Robin Murphy Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Collabora Kernel Team , =?utf-8?q?Adri=C3=A1n_Larumbe?= , Neil Armstrong , Claude X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3426; i=adrian.larumbe@collabora.com; h=from:subject:message-id; bh=yQFd+P6jOKn9w/gjCgOnJ7DFA+npz7xs+KhEtC2Mz0E=; b=owEB7QES/pANAwAKAQ4mfkzuU0M9AcsmYgBqIbd8RkeENXkZsBziuKOt/jG0olQTS3YJif72F Bvaas/SG1KJAbMEAAEKAB0WIQQyQDDowAUXXfk3B6QOJn5M7lNDPQUCaiG3fAAKCRAOJn5M7lND PTORDACDIvyhwWZwsNTQKW8d+by9/vlaNqWFw+ubmpyk5E/U1au/D5Hl13Bht23Op5RujgG/Tsw 6+fJcqw8/djDhTpUKpVAW1g56oK8AtHSvDtYnmSvIAeRUOxXCaDWwD5ByzxIdx3fwepW9OIQD/c MYTdiczKgKs0HKxJu/zoNQFitb63xAwssRRJZgYk3L285zftUgL5R6BdW6ozdGX/eArhpZwfc84 gCWQUfSrUjnNGnJDSQMjCQLyo5bdhlf60CcdlPNHTjLevNN8fvCAJ78oKyIG2H/H4SMCEZ+uHH+ LE7TYDRjq44CHIoeomM0YDdisgg/WN+Rdj+YXzg6F8HqmP3bFenaRraw59uAIAzckTQhzccM/Ei eGRvyePbm5CDe3XjZY3RAKYZwyvsniPIWvjC30vQWdIoGhJ0zGnCXAPuADbj3z5yABXS39DSFvH 1XHzamIWS3CijZ7w0ftyDurLTrmCjZsQ2fEkEpva1fsV47c2be6hDtonpKiGlyNr+CfMg= X-Developer-Key: i=adrian.larumbe@collabora.com; a=openpgp; fpr=324030E8C005175DF93707A40E267E4CEE53433D This patch series comes with some minor fixes for Panfrost. Some of the issues addressed were uncovered by LLM tools, while the one about RPM was traditionally debugged. The only proper bug fixes are the ones for perfcnt and RPM, and the others are more about ensuring robustness. perfcnt bug was never observed in the open, because no one had faced a HW reset when a perfcnt session was ongoing. RPM fix addresses a well-known issue I had been observing for quite some time, but that I had completely misunderstood. Signed-off-by: Adrián Larumbe --- Changes in v2: - Fixed race conditions introduced by the previous revision, in the RPM and HWPerf commits specifically. These can be consulted at [1] - Don't attempt to suspend the device unconditionally at the end of probe(), and do it through autosuspend instead. - Broke the RPM patch into one that fixes PM refcnt proper and another one for MMU enablement at device init time. - Moved perfcnt GPU disable helper into its own commmit. Same for transplating shrinker initialisation and unplug. - Added 'Fixes' and 'Reported-by' tags to all the relevant commits - [1] https://sashiko.dev/#/patchset/20260526-claude-fixes-v1-0-16e92eaa4949%40collabora.com - Link to v1: https://patch.msgid.link/20260526-claude-fixes-v1-0-16e92eaa4949@collabora.com To: Boris Brezillon To: Rob Herring To: Steven Price To: Adrián Larumbe To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Faith Ekstrand To: "Marty E. Plummer" To: Tomeu Vizoso To: Eric Anholt To: Alyssa Rosenzweig To: Robin Murphy Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: Neil Armstrong --- Adrián Larumbe (7): drm/panfrost: Check another bo field for cache option query drm/panfrost: Prevent division by 0 drm/panfrost: Move shrinker initialization and unplug one level down drm/panfrost: Move perfcnt GPU disable sequence into a helper drm/panfrost: Make reset sequence deal with an active HWPerf session drm/panfrost: Fix PM usage_count mishandling drm/panfrost: Explicitly enable MMU interrupts at device init drivers/gpu/drm/panfrost/panfrost_devfreq.c | 3 +- drivers/gpu/drm/panfrost/panfrost_device.c | 8 +++ drivers/gpu/drm/panfrost/panfrost_drv.c | 14 ++--- drivers/gpu/drm/panfrost/panfrost_gem.h | 4 +- drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c | 8 +-- drivers/gpu/drm/panfrost/panfrost_mmu.c | 11 +++- drivers/gpu/drm/panfrost/panfrost_mmu.h | 2 + drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 77 ++++++++++++++++++------ drivers/gpu/drm/panfrost/panfrost_perfcnt.h | 1 + 9 files changed, 90 insertions(+), 38 deletions(-) --- base-commit: c1079aebb4de218caa86c44f9a53700d1a582683 change-id: 20260523-claude-fixes-82b03a134a8c Best regards, -- Adrián Larumbe