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Signed-off-by: Adri=C3=A1n Larumbe Cc: Tvrtko Ursulin Acked-by: Tvrtko Ursulin --- Documentation/gpu/drm-usage-stats.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/gpu/drm-usage-stats.rst b/Documentation/gpu/drm-= usage-stats.rst index 2717cb2a597e..2b5393ed7692 100644 --- a/Documentation/gpu/drm-usage-stats.rst +++ b/Documentation/gpu/drm-usage-stats.rst @@ -21,7 +21,10 @@ File format specification =20 - File shall contain one key value pair per one line of text. - Colon character (`:`) must be used to delimit keys and values. -- All keys shall be prefixed with `drm-`. +- All standardised keys shall be prefixed with `drm-`. +- Driver-specific keys shall be prefixed with `driver_name-`, where + driver_name should ideally be the same as the `name` field in + `struct drm_driver`, although this is not mandatory. - Whitespace between the delimiter and first non-whitespace character shal= l be ignored when parsing. - Keys are not allowed to contain whitespace characters. --=20 2.47.1 From nobody Tue Dec 16 05:59:21 2025 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 8625B1F9F41; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable This is motivated by the desire of some drivers (eg. Panthor) to print the size of internal memory regions with a prefix that reflects the driver name, as suggested in the previous documentation commit. That means adding a new argument to print_size and making it available for DRM users. Signed-off-by: Adri=C3=A1n Larumbe Cc: Tvrtko Ursulin Reviewed-by: Tvrtko Ursulin --- drivers/gpu/drm/drm_file.c | 27 +++++++++++++++++++-------- include/drm/drm_file.h | 5 +++++ 2 files changed, 24 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c index cb5f22f5bbb6..f584abcd13cb 100644 --- a/drivers/gpu/drm/drm_file.c +++ b/drivers/gpu/drm/drm_file.c @@ -830,8 +830,12 @@ void drm_send_event(struct drm_device *dev, struct drm= _pending_event *e) } EXPORT_SYMBOL(drm_send_event); =20 -static void print_size(struct drm_printer *p, const char *stat, - const char *region, u64 sz) + +void drm_fdinfo_print_size(struct drm_printer *p, + const char *prefix, + const char *stat, + const char *region, + u64 sz) { const char *units[] =3D {"", " KiB", " MiB"}; unsigned u; @@ -842,8 +846,10 @@ static void print_size(struct drm_printer *p, const ch= ar *stat, sz =3D div_u64(sz, SZ_1K); } =20 - drm_printf(p, "drm-%s-%s:\t%llu%s\n", stat, region, sz, units[u]); + drm_printf(p, "%s-%s-%s:\t%llu%s\n", + prefix, stat, region, sz, units[u]); } +EXPORT_SYMBOL(drm_fdinfo_print_size); =20 /** * drm_print_memory_stats - A helper to print memory stats @@ -858,15 +864,20 @@ void drm_print_memory_stats(struct drm_printer *p, enum drm_gem_object_status supported_status, const char *region) { - print_size(p, "total", region, stats->private + stats->shared); - print_size(p, "shared", region, stats->shared); - print_size(p, "active", region, stats->active); + const char *prefix =3D "drm"; + + drm_fdinfo_print_size(p, prefix, "total", region, + stats->private + stats->shared); + drm_fdinfo_print_size(p, prefix, "shared", region, stats->shared); + drm_fdinfo_print_size(p, prefix, "active", region, stats->active); =20 if (supported_status & DRM_GEM_OBJECT_RESIDENT) - print_size(p, "resident", region, stats->resident); + drm_fdinfo_print_size(p, prefix, "resident", region, + stats->resident); =20 if (supported_status & DRM_GEM_OBJECT_PURGEABLE) - print_size(p, "purgeable", region, stats->purgeable); 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charset="utf-8" Content-Transfer-Encoding: quoted-printable This will display the sizes of kenrel BO's bound to an open file, which are otherwise not exposed to UM through a handle. The sizes recorded are as follows: - Per group: suspend buffer, protm-suspend buffer, syncobjcs - Per queue: ringbuffer, profiling slots, firmware interface - For all heaps in all heap pools across all VM's bound to an open file, record size of all heap chuks, and for each pool the gpu_context BO too. This does not record the size of FW regions, as these aren't bound to a specific open file and remain active through the whole life of the driver. Reviewed-by: Liviu Dudau Reviewed-by: Mihail Atanassov Reviewed-by: Steven Price Signed-off-by: Adri=C3=A1n Larumbe --- drivers/gpu/drm/panthor/panthor_drv.c | 14 +++++++ drivers/gpu/drm/panthor/panthor_heap.c | 26 +++++++++++++ drivers/gpu/drm/panthor/panthor_heap.h | 2 + drivers/gpu/drm/panthor/panthor_mmu.c | 34 +++++++++++++++++ drivers/gpu/drm/panthor/panthor_mmu.h | 3 ++ drivers/gpu/drm/panthor/panthor_sched.c | 51 ++++++++++++++++++++++++- drivers/gpu/drm/panthor/panthor_sched.h | 2 + 7 files changed, 131 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/pantho= r/panthor_drv.c index ac7e53f6e3f0..b75a9251f578 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -1457,12 +1457,26 @@ static void panthor_gpu_show_fdinfo(struct panthor_= device *ptdev, drm_printf(p, "drm-curfreq-panthor:\t%lu Hz\n", ptdev->current_frequency); } =20 +static void panthor_show_internal_memory_stats(struct drm_printer *p, stru= ct drm_file *file) +{ + char *drv_name =3D file->minor->dev->driver->name; + struct panthor_file *pfile =3D file->driver_priv; + struct drm_memory_stats stats =3D {0}; + + panthor_group_kbo_sizes(pfile, &stats); + panthor_vm_heaps_sizes(pfile, &stats); + + drm_fdinfo_print_size(p, drv_name, "resident", "memory", stats.resident); + drm_fdinfo_print_size(p, drv_name, "active", "memory", stats.active); +} + static void panthor_show_fdinfo(struct drm_printer *p, struct drm_file *fi= le) { struct drm_device *dev =3D file->minor->dev; struct panthor_device *ptdev =3D container_of(dev, struct panthor_device,= base); =20 panthor_gpu_show_fdinfo(ptdev, file->driver_priv, p); + panthor_show_internal_memory_stats(p, file); =20 drm_show_memory_stats(p, file); } diff --git a/drivers/gpu/drm/panthor/panthor_heap.c b/drivers/gpu/drm/panth= or/panthor_heap.c index 3796a9eb22af..db0285ce5812 100644 --- a/drivers/gpu/drm/panthor/panthor_heap.c +++ b/drivers/gpu/drm/panthor/panthor_heap.c @@ -603,3 +603,29 @@ void panthor_heap_pool_destroy(struct panthor_heap_poo= l *pool) =20 panthor_heap_pool_put(pool); } + +/** + * panthor_heap_pool_size() - Calculate size of all chunks across all heap= s in a pool + * @pool: Pool whose total chunk size to calculate. + * + * This function adds the size of all heap chunks across all heaps in the + * argument pool. It also adds the size of the gpu contexts kernel bo. + * It is meant to be used by fdinfo for displaying the size of internal + * driver BO's that aren't exposed to userspace through a GEM handle. + * + */ +size_t panthor_heap_pool_size(struct panthor_heap_pool *pool) +{ + struct panthor_heap *heap; + unsigned long i; + size_t size =3D 0; + + down_read(&pool->lock); + xa_for_each(&pool->xa, i, heap) + size +=3D heap->chunk_size * heap->chunk_count; + up_read(&pool->lock); + + size +=3D pool->gpu_contexts->obj->size; + + return size; +} diff --git a/drivers/gpu/drm/panthor/panthor_heap.h b/drivers/gpu/drm/panth= or/panthor_heap.h index 25a5f2bba445..e3358d4e8edb 100644 --- a/drivers/gpu/drm/panthor/panthor_heap.h +++ b/drivers/gpu/drm/panthor/panthor_heap.h @@ -27,6 +27,8 @@ struct panthor_heap_pool * panthor_heap_pool_get(struct panthor_heap_pool *pool); void panthor_heap_pool_put(struct panthor_heap_pool *pool); =20 +size_t panthor_heap_pool_size(struct panthor_heap_pool *pool); + int panthor_heap_grow(struct panthor_heap_pool *pool, u64 heap_gpu_va, u32 renderpasses_in_flight, diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/pantho= r/panthor_mmu.c index c3f0b0225cf9..b43073010b7f 100644 --- a/drivers/gpu/drm/panthor/panthor_mmu.c +++ b/drivers/gpu/drm/panthor/panthor_mmu.c @@ -1941,6 +1941,40 @@ struct panthor_heap_pool *panthor_vm_get_heap_pool(s= truct panthor_vm *vm, bool c return pool; } =20 +/** + * panthor_vm_heaps_sizes() - Calculate size of all heap chunks across all + * heaps over all the heap pools in a VM + * @pfile: File. + * @stats: Memory stats to be updated. + * + * Calculate all heap chunk sizes in all heap pools bound to a VM. If the = VM + * is active, record the size as active as well. + */ +void panthor_vm_heaps_sizes(struct panthor_file *pfile, struct drm_memory_= stats *stats) +{ + struct panthor_vm *vm; + unsigned long i; + + if (!pfile->vms) + return; + + xa_for_each(&pfile->vms->xa, i, vm) { + size_t size; + + mutex_lock(&vm->heaps.lock); + if (!vm->heaps.pool) { + mutex_unlock(&vm->heaps.lock); + continue; + } + size =3D panthor_heap_pool_size(vm->heaps.pool); + mutex_unlock(&vm->heaps.lock); + + stats->resident +=3D size; + if (vm->as.id >=3D 0) + stats->active +=3D size; + } +} + static u64 mair_to_memattr(u64 mair, bool coherent) { u64 memattr =3D 0; diff --git a/drivers/gpu/drm/panthor/panthor_mmu.h b/drivers/gpu/drm/pantho= r/panthor_mmu.h index 8d21e83d8aba..fc274637114e 100644 --- a/drivers/gpu/drm/panthor/panthor_mmu.h +++ b/drivers/gpu/drm/panthor/panthor_mmu.h @@ -9,6 +9,7 @@ =20 struct drm_exec; struct drm_sched_job; +struct drm_memory_stats; struct panthor_gem_object; struct panthor_heap_pool; struct panthor_vm; @@ -37,6 +38,8 @@ int panthor_vm_flush_all(struct panthor_vm *vm); struct panthor_heap_pool * panthor_vm_get_heap_pool(struct panthor_vm *vm, bool create); =20 +void panthor_vm_heaps_sizes(struct panthor_file *pfile, struct drm_memory_= stats *stats); + struct panthor_vm *panthor_vm_get(struct panthor_vm *vm); void panthor_vm_put(struct panthor_vm *vm); struct panthor_vm *panthor_vm_create(struct panthor_device *ptdev, bool fo= r_mcu, diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/pant= hor/panthor_sched.c index ef4bec7ff9c7..75b788c580a7 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.c +++ b/drivers/gpu/drm/panthor/panthor_sched.c @@ -618,7 +618,7 @@ struct panthor_group { */ struct panthor_kernel_bo *syncobjs; =20 - /** @fdinfo: Per-file total cycle and timestamp values reference. */ + /** @fdinfo: Per-group total cycle and timestamp values and kernel BO siz= es. */ struct { /** @data: Total sampled values for jobs in queues from this group. */ struct panthor_gpu_usage data; @@ -628,6 +628,9 @@ struct panthor_group { * and job post-completion processing function */ struct mutex lock; + + /** @kbo_sizes: Aggregate size of private kernel BO's held by the group.= */ + size_t kbo_sizes; } fdinfo; =20 /** @state: Group state. */ @@ -3365,6 +3368,29 @@ group_create_queue(struct panthor_group *group, return ERR_PTR(ret); } =20 +static void add_group_kbo_sizes(struct panthor_device *ptdev, + struct panthor_group *group) +{ + struct panthor_queue *queue; + int i; + + if (drm_WARN_ON(&ptdev->base, IS_ERR_OR_NULL(group))) + return; + if (drm_WARN_ON(&ptdev->base, ptdev !=3D group->ptdev)) + return; + + group->fdinfo.kbo_sizes +=3D group->suspend_buf->obj->size; + group->fdinfo.kbo_sizes +=3D group->protm_suspend_buf->obj->size; + group->fdinfo.kbo_sizes +=3D group->syncobjs->obj->size; + + for (i =3D 0; i < group->queue_count; i++) { + queue =3D group->queues[i]; + group->fdinfo.kbo_sizes +=3D queue->ringbuf->obj->size; + group->fdinfo.kbo_sizes +=3D queue->iface.mem->obj->size; + group->fdinfo.kbo_sizes +=3D queue->profiling.slots->obj->size; + } +} + #define MAX_GROUPS_PER_POOL 128 =20 int panthor_group_create(struct panthor_file *pfile, @@ -3489,6 +3515,7 @@ int panthor_group_create(struct panthor_file *pfile, } mutex_unlock(&sched->reset.lock); =20 + add_group_kbo_sizes(group->ptdev, group); mutex_init(&group->fdinfo.lock); =20 return gid; @@ -3606,6 +3633,28 @@ void panthor_group_pool_destroy(struct panthor_file = *pfile) pfile->groups =3D NULL; } =20 +/** + * panthor_group_kbo_sizes() - Retrieve aggregate size of all private kern= el BO's + * belonging to all the groups owned by an open Panthor file + * @pfile: File. + * @stats: Memory statistics to be updated. + * + */ +void panthor_group_kbo_sizes(struct panthor_file *pfile, struct drm_memory= _stats *stats) +{ + struct panthor_group_pool *gpool =3D pfile->groups; + struct panthor_group *group; + unsigned long i; + + if (IS_ERR_OR_NULL(gpool)) + return; + xa_for_each(&gpool->xa, i, group) { + stats->resident +=3D group->fdinfo.kbo_sizes; + if (group->csg_id >=3D 0) + stats->active +=3D group->fdinfo.kbo_sizes; + } +} + static void job_release(struct kref *ref) { struct panthor_job *job =3D container_of(ref, struct panthor_job, refcoun= t); diff --git a/drivers/gpu/drm/panthor/panthor_sched.h b/drivers/gpu/drm/pant= hor/panthor_sched.h index 5ae6b4bde7c5..bfe26b26a15b 100644 --- a/drivers/gpu/drm/panthor/panthor_sched.h +++ b/drivers/gpu/drm/panthor/panthor_sched.h @@ -9,6 +9,7 @@ struct dma_fence; struct drm_file; struct drm_gem_object; struct drm_sched_job; +struct drm_memory_stats; struct drm_panthor_group_create; struct drm_panthor_queue_create; struct drm_panthor_group_get_state; @@ -36,6 +37,7 @@ void panthor_job_update_resvs(struct drm_exec *exec, stru= ct drm_sched_job *job); =20 int panthor_group_pool_create(struct panthor_file *pfile); void panthor_group_pool_destroy(struct panthor_file *pfile); +void panthor_group_kbo_sizes(struct panthor_file *pfile, struct drm_memory= _stats *stats); =20 int panthor_sched_init(struct panthor_device *ptdev); 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Tue, 14 Jan 2025 09:34:47 -0800 (PST) From: =?UTF-8?q?Adri=C3=A1n=20Larumbe?= To: David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Jonathan Corbet Cc: kernel@collabora.com, =?UTF-8?q?Adri=C3=A1n=20Larumbe?= , Tvrtko Ursulin , Tvrtko Ursulin , dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Mihail Atanassov , Liviu Dudau , Steven Price Subject: [PATCH v8 4/4] Documentation/gpu: Add fdinfo meanings of panthor-*-memory tags Date: Tue, 14 Jan 2025 17:34:03 +0000 Message-ID: <20250114173406.3060248-5-adrian.larumbe@collabora.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250114173406.3060248-1-adrian.larumbe@collabora.com> References: <20250114173406.3060248-1-adrian.larumbe@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: quoted-printable A previous commit enabled display of driver-internal kernel BO sizes through the device file's fdinfo interface. Expand the description of the relevant driver-specific key:value pairs with the definitions of the new panthor-*-memory ones. Reviewed-by: Mihail Atanassov Reviewed-by: Liviu Dudau Reviewed-by: Steven Price Signed-off-by: Adri=C3=A1n Larumbe --- Documentation/gpu/panthor.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/gpu/panthor.rst b/Documentation/gpu/panthor.rst index 3f8979fa2b86..7a841741278f 100644 --- a/Documentation/gpu/panthor.rst +++ b/Documentation/gpu/panthor.rst @@ -26,6 +26,8 @@ the currently possible format options: drm-cycles-panthor: 94439687187 drm-maxfreq-panthor: 1000000000 Hz drm-curfreq-panthor: 1000000000 Hz + panthor-resident-memory: 10396 KiB + panthor-active-memory: 10396 KiB drm-total-memory: 16480 KiB drm-shared-memory: 0 drm-active-memory: 16200 KiB @@ -44,3 +46,11 @@ driver by writing into the appropriate sysfs node:: =20 Where `N` is a bit mask where cycle and timestamp sampling are respectively enabled by the first and second bits. + +Possible `panthor-*-memory` keys are: `active` and `resident`. +These values convey the sizes of the internal driver-owned shmem BO's that +aren't exposed to user-space through a DRM handle, like queue ring buffers, +sync object arrays and heap chunks. Because they are all allocated and pin= ned +at creation time, only `panthor-resident-memory` is necessary to tell us t= heir +size. `panthor-active-memory` shows the size of kernel BO's associated with +VM's and groups currently being scheduled for execution by the GPU. --=20 2.47.1