From nobody Mon Feb 9 10:28:46 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 889B2221730; Wed, 7 May 2025 13:07:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746623220; cv=none; b=MxkEghzCjZ1xP0d4cOUU7gEgCNYki+6jFxlWMoinqrtj416AVluv5Pjhie9vBY/+b426WZe7bEH77VK68bgr5C3a3P/exhyB2291MBP1bfFwr7shYw5WA4mFJP+ZkWiFHWpMJMoplN+PgdTs2cOnNQ/Z1a9C2cTIC6OcVRbKMEA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746623220; c=relaxed/simple; bh=hjRJC+ai7FiQIRoBwApJsexl2tKLt7dyencvNsS2N6g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=lHbZ+zjU68+t+Mb6lEclveDrzvjRQqriumkzIHRvx5XwaFpSU04lF5UN7QIrzaf0pylrE3Vdjxj6a5POl0HcpnHxUTDcyb+sJlslGXKFep5a/Gh3JqkbKOgEz2uv4QR8IYI2BwdWcKoJy66KIwcmiO/nl3L5Gl8aESzSR5DkYG0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lnI9d84r; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lnI9d84r" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D3ABC4CEF1; Wed, 7 May 2025 13:06:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746623220; bh=hjRJC+ai7FiQIRoBwApJsexl2tKLt7dyencvNsS2N6g=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=lnI9d84rte198XGtoBgP8PhwKK6a/AJI0dgIysF30jEu76aDahEl3kUrGlQOxXgPo rjP/jiBxjAwatwzTpr33H5GKeDima3BNzugygmgajOvep3gYHJJciJMnBWWcnHu6uX 9lXRdv5XyQoAUp859IXj26rSdSmvN3GsOnCmq1Cm34+F3iM2rM7nHQZSPcAlZuDmWw z4aMYx04x/sDcG0NT6C1A4FHhm+sfGFkSRzdh8YFmioubMWhqa6Qh0W8ced5O0MJ99 IYmLHYx8U+KRq8bFYBvtPQnq63e6Jxd0B977HWEAUgS5bzgGc4uQDG5ExfluxzLPLD 0Qt8JiPpDcUBw== From: Jeff Layton Date: Wed, 07 May 2025 09:06:29 -0400 Subject: [PATCH v8 04/10] ref_tracker: add a static classname string to each ref_tracker_dir 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: quoted-printable Message-Id: <20250507-reftrack-dbgfs-v8-4-607717d3bb98@kernel.org> References: <20250507-reftrack-dbgfs-v8-0-607717d3bb98@kernel.org> In-Reply-To: <20250507-reftrack-dbgfs-v8-0-607717d3bb98@kernel.org> To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=5956; i=jlayton@kernel.org; h=from:subject:message-id; bh=hjRJC+ai7FiQIRoBwApJsexl2tKLt7dyencvNsS2N6g=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoG1ro0QXNeF8s8kcU5/LXubRUk2qFpVyUIBOlz W+T68op162JAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaBta6AAKCRAADmhBGVaC FRNlD/4wkqdTeC4yZ9b+m6Wlrkjng1/Eb9PHoL/0zELG0CJUik9srEIrVfwsRNJeGCjhpCuDC/6 OluXGlDp4J4SUfSBiSFZxFYlsweLW1SeZlojT3jw/NkrsHNfympoQQLV+kLzK+J97JjSk/V4Khg 78vAoNJFHcFN8J/vQjdRlrT1rvWCLXIR7vt2cWOuPPSk4/GgYETNLHKJlZWdoP4trM0b93DpHtx XpFxb/bo4VMS5ceULGkyEqP6PUjsGddyKwOBdmb4L1JoQdjKITUm52mm+QEulDc9sobe+1dbpcb MM/T89YzpSGOmY8/Ut2kq6FI67360nrjyB8Y5YId4RCwzJze0oDqIGs+c0857W31TwZdoXWa0vj lBQusRaums7SsXsBZfU3FSq6GPyzBskdClavyMQRMwecee6b80kMXIxxBOPxAm8Ku12vuO7NK3H DiVoBYlf6F+cxZcbkfeAbPufWqY6zrzzkklB6poBjEi2noQgmLI/UK+BQWqTOE6jP6EGnV5KhFB Am7G5nSpOclJTTkwvBSydWtl8IuNV9EQCaEC5V8iVxillD14mOeEnsGR9DAbozv6VCKeLJ6CcBA r3DYSxeOwTX9OnGDHJSjFNmfiMtVG9GhqP/HrTwahpwP8L1wCK0ZZqcZbSv29P0aOQFBnJAxYVf 1zxl4uyfn2NSRFA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 A later patch in the series will be adding debugfs files for each ref_tracker that get created in ref_tracker_dir_init(). The format will be "class@%px". The current "name" string can vary between ref_tracker_dir objects of the same type, so it's not suitable for this purpose. Add a new "class" string to the ref_tracker dir that describes the the type of object (sans any individual info for that object). Signed-off-by: Jeff Layton --- drivers/gpu/drm/display/drm_dp_tunnel.c | 2 +- drivers/gpu/drm/i915/intel_runtime_pm.c | 3 ++- drivers/gpu/drm/i915/intel_wakeref.c | 2 +- include/linux/ref_tracker.h | 4 ++++ lib/test_ref_tracker.c | 2 +- net/core/dev.c | 2 +- net/core/net_namespace.c | 4 ++-- 7 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_tunnel.c b/drivers/gpu/drm/disp= lay/drm_dp_tunnel.c index 90fe07a89260e21e78f2db7f57a90602be921a11..f2a8ef6abf34d89a642d7c7708c= 41e5b1dc9dece 100644 --- a/drivers/gpu/drm/display/drm_dp_tunnel.c +++ b/drivers/gpu/drm/display/drm_dp_tunnel.c @@ -1920,7 +1920,7 @@ drm_dp_tunnel_mgr_create(struct drm_device *dev, int = max_group_count) } =20 #ifdef CONFIG_DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG - ref_tracker_dir_init(&mgr->ref_tracker, 16, "dptun"); + ref_tracker_dir_init(&mgr->ref_tracker, 16, "drm_dptun", "dptun"); #endif =20 for (i =3D 0; i < max_group_count; i++) { diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915= /intel_runtime_pm.c index 8d9f4c410546e4144d4bc8bbc6696f3bd9498848..3fdab3b44c08cea16ac2f73aafc= 2bea2ffbb19e7 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -59,7 +59,8 @@ static struct drm_i915_private *rpm_to_i915(struct intel_= runtime_pm *rpm) =20 static void init_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm) { - ref_tracker_dir_init(&rpm->debug, INTEL_REFTRACK_DEAD_COUNT, dev_name(rpm= ->kdev)); + ref_tracker_dir_init(&rpm->debug, INTEL_REFTRACK_DEAD_COUNT, + "intel_runtime_pm", dev_name(rpm->kdev)); } =20 static intel_wakeref_t diff --git a/drivers/gpu/drm/i915/intel_wakeref.c b/drivers/gpu/drm/i915/in= tel_wakeref.c index 07e81be4d3920febece34709c63a63204a41583c..5269e64c58a49884f5d71255754= 6272bfdeb8417 100644 --- a/drivers/gpu/drm/i915/intel_wakeref.c +++ b/drivers/gpu/drm/i915/intel_wakeref.c @@ -114,7 +114,7 @@ void __intel_wakeref_init(struct intel_wakeref *wf, "wakeref.work", &key->work, 0); =20 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_WAKEREF) - ref_tracker_dir_init(&wf->debug, INTEL_REFTRACK_DEAD_COUNT, name); + ref_tracker_dir_init(&wf->debug, INTEL_REFTRACK_DEAD_COUNT, "intel_wakere= f", name); #endif } =20 diff --git a/include/linux/ref_tracker.h b/include/linux/ref_tracker.h index a0a1ee43724ffa00e60c116be18e481bfe1d1455..3968f993db81e95c0d58c814543= 11841c1b9cd35 100644 --- a/include/linux/ref_tracker.h +++ b/include/linux/ref_tracker.h @@ -19,6 +19,7 @@ struct ref_tracker_dir { bool dead; struct list_head list; /* List of active trackers */ struct list_head quarantine; /* List of dead trackers */ + const char *class; /* object classname */ char name[32]; #endif }; @@ -27,6 +28,7 @@ struct ref_tracker_dir { =20 static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir, unsigned int quarantine_count, + const char *class, const char *name) { INIT_LIST_HEAD(&dir->list); @@ -36,6 +38,7 @@ static inline void ref_tracker_dir_init(struct ref_tracke= r_dir *dir, dir->dead =3D false; refcount_set(&dir->untracked, 1); refcount_set(&dir->no_tracker, 1); + dir->class =3D class; strscpy(dir->name, name, sizeof(dir->name)); stack_depot_init(); } @@ -60,6 +63,7 @@ int ref_tracker_free(struct ref_tracker_dir *dir, =20 static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir, unsigned int quarantine_count, + const char *class, const char *name) { } diff --git a/lib/test_ref_tracker.c b/lib/test_ref_tracker.c index b983ceb12afcb84ad60360a1e6fec0072e78ef79..d263502a4c1db248f64a66a468e= 96c8e4cffab25 100644 --- a/lib/test_ref_tracker.c +++ b/lib/test_ref_tracker.c @@ -64,7 +64,7 @@ static int __init test_ref_tracker_init(void) { int i; =20 - ref_tracker_dir_init(&ref_dir, 100, "selftest"); + ref_tracker_dir_init(&ref_dir, 100, "selftest", "selftest"); =20 timer_setup(&test_ref_tracker_timer, test_ref_tracker_timer_func, 0); mod_timer(&test_ref_tracker_timer, jiffies + 1); diff --git a/net/core/dev.c b/net/core/dev.c index 1be7cb73a6024fda6797b6dfc895e4ce25f43251..380d07bec15a1f62ed27c31a6e2= 11e74f3a5561d 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -11620,7 +11620,7 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv= , const char *name, =20 dev->priv_len =3D sizeof_priv; =20 - ref_tracker_dir_init(&dev->refcnt_tracker, 128, name); + ref_tracker_dir_init(&dev->refcnt_tracker, 128, "netdev", name); #ifdef CONFIG_PCPU_DEV_REFCNT dev->pcpu_refcnt =3D alloc_percpu(int); if (!dev->pcpu_refcnt) diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index b0dfdf791ece5aa8fefdc2aea1ff4a9d9c399d72..008de9675ea98fa8c18628b2f1c= 3aee7f3ebc9c6 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -324,8 +324,8 @@ static __net_init void preinit_net(struct net *net, str= uct user_namespace *user_ { refcount_set(&net->passive, 1); refcount_set(&net->ns.count, 1); - ref_tracker_dir_init(&net->refcnt_tracker, 128, "net refcnt"); - ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net notrefcnt"); + ref_tracker_dir_init(&net->refcnt_tracker, 128, "net_refcnt", "net_refcnt= "); + ref_tracker_dir_init(&net->notrefcnt_tracker, 128, "net_notrefcnt", "net_= notrefcnt"); =20 get_random_bytes(&net->hash_mix, sizeof(u32)); net->dev_base_seq =3D 1; --=20 2.49.0