From patchwork Thu Jun 6 00:49:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adri=C3=A1n_Larumbe?= X-Patchwork-Id: 13687735 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 71561C27C53 for ; Thu, 6 Jun 2024 00:54:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2713F10E693; Thu, 6 Jun 2024 00:54:42 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="4OZXTJG8"; dkim-atps=neutral Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id EB74510E0A6 for ; Thu, 6 Jun 2024 00:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1717635275; bh=h4yIICZo18L59W4sFqllXduxAeJwBgRiZERL4Gid1Ns=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=4OZXTJG8ZCfaw8BuBSyAAgG8Yu5yiKls4VeJLghWrV/rp2FjtO2KzUYmPlLXWN1ri taZqke9KhbfvzbGfZ+DZ6SROWgl/FZremVJTfqvaFmjyHwdB7JWTLhNu+mW4/0EEJC elLW+MKiREjKEwYfo8tEZpAfhoNCeAo9guDzLfGFdvs0sUGp1quAkQoY+eiJ3qCd1V 38u0c6ktwlNmDJO0Jr4d2YvH0gX3/Vd32ZcdaTbDKKtQ2SzA+8qHwLvWq6lGW2yUGQ VvD3zAVeHYpv1oFl4U0IEhAir8UVeDLIHXxvzWo0RsOYlxV0F9DFYTvcxZUOAc9UvW G0iMFTS+T9huQ== Received: from localhost.localdomain (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: alarumbe) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 2A2D637821CC; Thu, 6 Jun 2024 00:54:35 +0000 (UTC) From: =?utf-8?q?Adri=C3=A1n_Larumbe?= To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Cc: kernel@collabora.com, =?utf-8?q?Adri=C3=A1n_Larumbe?= , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/7] drm/panthor: add DRM fdinfo support Date: Thu, 6 Jun 2024 01:49:54 +0100 Message-ID: <20240606005416.1172431-3-adrian.larumbe@collabora.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240606005416.1172431-1-adrian.larumbe@collabora.com> References: <20240606005416.1172431-1-adrian.larumbe@collabora.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Drawing from the FW-calculated values in the previous commit, we can increase the numbers for an open file by collecting them from finished jobs when updating their group synchronisation objects. Signed-off-by: Adrián Larumbe --- drivers/gpu/drm/panthor/panthor_devfreq.c | 10 +++++ drivers/gpu/drm/panthor/panthor_device.h | 11 ++++++ drivers/gpu/drm/panthor/panthor_drv.c | 31 +++++++++++++++ drivers/gpu/drm/panthor/panthor_sched.c | 46 +++++++++++++++++++++++ 4 files changed, 98 insertions(+) diff --git a/drivers/gpu/drm/panthor/panthor_devfreq.c b/drivers/gpu/drm/panthor/panthor_devfreq.c index c6d3c327cc24..5eededaeade7 100644 --- a/drivers/gpu/drm/panthor/panthor_devfreq.c +++ b/drivers/gpu/drm/panthor/panthor_devfreq.c @@ -91,6 +91,7 @@ static int panthor_devfreq_get_dev_status(struct device *dev, spin_lock_irqsave(&pdevfreq->lock, irqflags); panthor_devfreq_update_utilization(pdevfreq); + ptdev->current_frequency = status->current_frequency; status->total_time = ktime_to_ns(ktime_add(pdevfreq->busy_time, pdevfreq->idle_time)); @@ -130,6 +131,7 @@ int panthor_devfreq_init(struct panthor_device *ptdev) struct panthor_devfreq *pdevfreq; struct dev_pm_opp *opp; unsigned long cur_freq; + unsigned long freq = ULONG_MAX; int ret; pdevfreq = drmm_kzalloc(&ptdev->base, sizeof(*ptdev->devfreq), GFP_KERNEL); @@ -204,6 +206,14 @@ int panthor_devfreq_init(struct panthor_device *ptdev) dev_pm_opp_put(opp); + /* Find the fastest defined rate */ + opp = dev_pm_opp_find_freq_floor(dev, &freq); + if (IS_ERR(opp)) + return PTR_ERR(opp); + ptdev->fast_rate = freq; + + dev_pm_opp_put(opp); + /* * Setup default thresholds for the simple_ondemand governor. * The values are chosen based on experiments. diff --git a/drivers/gpu/drm/panthor/panthor_device.h b/drivers/gpu/drm/panthor/panthor_device.h index e388c0472ba7..8a0260a7b90a 100644 --- a/drivers/gpu/drm/panthor/panthor_device.h +++ b/drivers/gpu/drm/panthor/panthor_device.h @@ -162,6 +162,14 @@ struct panthor_device { */ struct page *dummy_latest_flush; } pm; + + unsigned long current_frequency; + unsigned long fast_rate; +}; + +struct panthor_gpu_usage { + u64 time; + u64 cycles; }; /** @@ -176,6 +184,9 @@ struct panthor_file { /** @groups: Scheduling group pool attached to this file. */ struct panthor_group_pool *groups; + + /** @stats: cycle and timestamp measures for job execution. */ + struct panthor_gpu_usage stats; }; int panthor_device_init(struct panthor_device *ptdev); diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index b8a84f26b3ef..6d25385e02a1 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -3,12 +3,17 @@ /* Copyright 2019 Linaro, Ltd., Rob Herring */ /* Copyright 2019 Collabora ltd. */ +#ifdef CONFIG_ARM_ARCH_TIMER +#include +#endif + #include #include #include #include #include #include +#include #include #include @@ -1351,6 +1356,30 @@ static int panthor_mmap(struct file *filp, struct vm_area_struct *vma) return ret; } +static void panthor_gpu_show_fdinfo(struct panthor_device *ptdev, + struct panthor_file *pfile, + struct drm_printer *p) +{ +#ifdef CONFIG_ARM_ARCH_TIMER + drm_printf(p, "drm-engine-panthor:\t%llu ns\n", + DIV_ROUND_UP_ULL((pfile->stats.time * NSEC_PER_SEC), + arch_timer_get_cntfrq())); +#endif + drm_printf(p, "drm-cycles-panthor:\t%llu\n", pfile->stats.cycles); + drm_printf(p, "drm-maxfreq-panthor:\t%lu Hz\n", ptdev->fast_rate); + drm_printf(p, "drm-curfreq-panthor:\t%lu Hz\n", ptdev->current_frequency); +} + +static void panthor_show_fdinfo(struct drm_printer *p, struct drm_file *file) +{ + struct drm_device *dev = file->minor->dev; + struct panthor_device *ptdev = container_of(dev, struct panthor_device, base); + + panthor_gpu_show_fdinfo(ptdev, file->driver_priv, p); + + drm_show_memory_stats(p, file); +} + static const struct file_operations panthor_drm_driver_fops = { .open = drm_open, .release = drm_release, @@ -1360,6 +1389,7 @@ static const struct file_operations panthor_drm_driver_fops = { .read = drm_read, .llseek = noop_llseek, .mmap = panthor_mmap, + .show_fdinfo = drm_show_fdinfo, }; #ifdef CONFIG_DEBUG_FS @@ -1378,6 +1408,7 @@ static const struct drm_driver panthor_drm_driver = { DRIVER_SYNCOBJ_TIMELINE | DRIVER_GEM_GPUVA, .open = panthor_open, .postclose = panthor_postclose, + .show_fdinfo = panthor_show_fdinfo, .ioctls = panthor_drm_driver_ioctls, .num_ioctls = ARRAY_SIZE(panthor_drm_driver_ioctls), .fops = &panthor_drm_driver_fops, diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c index 62a67d6bd37a..bbd20db40e7b 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.c +++ b/drivers/gpu/drm/panthor/panthor_sched.c @@ -610,6 +610,18 @@ struct panthor_group { size_t job_times_offset; } syncobjs; + /** @fdinfo: Per-file total cycle and timestamp values reference. */ + struct { + /** @data: Pointer to actual per-file sample data. */ + struct panthor_gpu_usage *data; + + /** + * @lock: Mutex to govern concurrent access from drm file's fdinfo callback + * and job post-completion processing function + */ + struct mutex lock; + } fdinfo; + /** @state: Group state. */ enum panthor_group_state state; @@ -870,6 +882,8 @@ static void group_release_work(struct work_struct *work) release_work); u32 i; + mutex_destroy(&group->fdinfo.lock); + for (i = 0; i < group->queue_count; i++) group_free_queue(group, group->queues[i]); @@ -2792,6 +2806,30 @@ void panthor_sched_post_reset(struct panthor_device *ptdev, bool reset_failed) } } +static void update_fdinfo_stats(struct panthor_job *job) +{ + struct panthor_group *group = job->group; + struct panthor_queue *queue = group->queues[job->queue_idx]; + struct panthor_device *ptdev = group->ptdev; + struct panthor_gpu_usage *fdinfo; + struct panthor_job_times *times; + + drm_WARN_ON(&ptdev->base, job->ringbuf_idx >= + panthor_kernel_bo_size(queue->ringbuf) / (SLOTSIZE)); + + times = (struct panthor_job_times *) + ((unsigned long)group->syncobjs.bo->kmap + queue->time_offset + + (job->ringbuf_idx * sizeof(struct panthor_job_times))); + + mutex_lock(&group->fdinfo.lock); + if ((group->fdinfo.data)) { + fdinfo = group->fdinfo.data; + fdinfo->cycles += times->cycles.after - times->cycles.before; + fdinfo->time += times->time.after - times->time.before; + } + mutex_unlock(&group->fdinfo.lock); +} + static void group_sync_upd_work(struct work_struct *work) { struct panthor_group *group = @@ -2827,6 +2865,7 @@ static void group_sync_upd_work(struct work_struct *work) dma_fence_end_signalling(cookie); list_for_each_entry_safe(job, job_tmp, &done_jobs, node) { + update_fdinfo_stats(job); list_del_init(&job->node); panthor_job_put(&job->base); } @@ -3289,6 +3328,9 @@ int panthor_group_create(struct panthor_file *pfile, } mutex_unlock(&sched->reset.lock); + group->fdinfo.data = &pfile->stats; + mutex_init(&group->fdinfo.lock); + return gid; err_put_group: @@ -3328,6 +3370,10 @@ int panthor_group_destroy(struct panthor_file *pfile, u32 group_handle) mutex_unlock(&sched->lock); mutex_unlock(&sched->reset.lock); + mutex_lock(&group->fdinfo.lock); + group->fdinfo.data = NULL; + mutex_unlock(&group->fdinfo.lock); + group_put(group); return 0; }