From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tvrtko Ursulin Subject: [RFC 07/12] drm/cgroup: Add over budget signalling callback Date: Thu, 12 Jan 2023 16:56:04 +0000 Message-ID: <20230112165609.1083270-8-tvrtko.ursulin@linux.intel.com> References: <20230112165609.1083270-1-tvrtko.ursulin@linux.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673542668; x=1705078668; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Q3zWAjP64jG9FhONvHni1RwGOKYO5eUnyqNVQmfnHLs=; b=TcpGc6YHcnPPd59f6fI0XEswROU4vt0Z8ydqxhO+mY/zQlLUfZLGOEAd 6QIxUj9KPJwru9BQFXXYYPOCDMJaONmUGi7jc8TVtghAF+/0nJC4vdEYZ 9g4JuOQRyoHOQvjrUsJbjNoaJXQ+TJD/d6EvgD3KaVWAy6aONNeHKIGhV 9gyuKktSY0LwLaT5TFMaZSVbYxkX6Rs8oZt+rhcwmQsIkN+7yTqfe1HIv 56DxykBandpi+d3JOCBu4F2SStyc6swFTGP4nglP7XR0qYjY+x50ct9k9 Vy1UWIuoyX+OJ0fnbtceHlkKs/E9UC1Mn7TZONvKPUhzUTYCcHyOGAJXu g==; In-Reply-To: <20230112165609.1083270-1-tvrtko.ursulin@linux.intel.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Content-Type: text/plain; charset="us-ascii" To: Intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Rob Clark , Kenny.Ho@amd.com, Daniel Vetter , Johannes Weiner , linux-kernel@vger.kernel.org, =?UTF-8?q?St=C3=A9phane=20Marchesin?= , =?UTF-8?q?Christian=20K=C3=B6nig?= , Zefan Li , Dave Airlie , Tejun Heo , cgroups@vger.kernel.org, "T . J . Mercier" From: Tvrtko Ursulin Add a new callback via which the drm cgroup controller is notifying the drm core that a certain process is above its allotted GPU time. Signed-off-by: Tvrtko Ursulin --- drivers/gpu/drm/drm_cgroup.c | 21 +++++++++++++++++++++ include/drm/drm_clients.h | 1 + include/drm/drm_drv.h | 8 ++++++++ 3 files changed, 30 insertions(+) diff --git a/drivers/gpu/drm/drm_cgroup.c b/drivers/gpu/drm/drm_cgroup.c index bc1e34f1a552..ef951421bba6 100644 --- a/drivers/gpu/drm/drm_cgroup.c +++ b/drivers/gpu/drm/drm_cgroup.c @@ -162,3 +162,24 @@ u64 drm_pid_get_active_time_us(struct pid *pid) return total; } EXPORT_SYMBOL_GPL(drm_pid_get_active_time_us); + +void drm_pid_signal_budget(struct pid *pid, u64 usage, u64 budget) +{ + struct drm_pid_clients *clients; + + rcu_read_lock(); + clients = xa_load(&drm_pid_clients, (unsigned long)pid); + if (clients) { + struct drm_file *fpriv; + + list_for_each_entry_rcu(fpriv, &clients->file_list, clink) { + const struct drm_cgroup_ops *cg_ops = + fpriv->minor->dev->driver->cg_ops; + + if (cg_ops && cg_ops->signal_budget) + cg_ops->signal_budget(fpriv, usage, budget); + } + } + rcu_read_unlock(); +} +EXPORT_SYMBOL_GPL(drm_pid_signal_budget); diff --git a/include/drm/drm_clients.h b/include/drm/drm_clients.h index 7e0c0cf14f25..f3571caa35f8 100644 --- a/include/drm/drm_clients.h +++ b/include/drm/drm_clients.h @@ -42,5 +42,6 @@ drm_clients_migrate(struct drm_file *file_priv, #endif u64 drm_pid_get_active_time_us(struct pid *pid); +void drm_pid_signal_budget(struct pid *pid, u64 usage, u64 budget); #endif diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index f5f0e088e1fe..0945e562821a 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -174,6 +174,14 @@ struct drm_cgroup_ops { * Used by the DRM core when queried by the DRM cgroup controller. */ u64 (*active_time_us) (struct drm_file *); + + /** + * @signal_budget: + * + * Optional callback used by the DRM core to forward over/under GPU time + * messages sent by the DRM cgroup controller. + */ + int (*signal_budget) (struct drm_file *, u64 used, u64 budget); }; /** -- 2.34.1