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| author |   Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> | 2025-05-26 14:54:43 +0200 |
|---|---|---|
| committer |   Philipp Stanner <phasta@kernel.org> | 2025-05-28 16:15:56 +0200 |
| commit | 18c44fb647beb53d5c9dcd926d733bf931fbfca8 (patch) | |
| tree | b8e8bac72feeba58a79bebfae3554f02998af31e | |
| parent | drm/bridge: adv7511: Rename adv7511_dsi_config_timing_gen() into adv7533_dsi_config_timing_gen() (diff) | |
| download | wireguard-linux-18c44fb647beb53d5c9dcd926d733bf931fbfca8.tar.xz wireguard-linux-18c44fb647beb53d5c9dcd926d733bf931fbfca8.zip | |
drm/debugfs: Output client_id in in drm_clients_info
client_id is a unique id used by fdinfo. Having it listed in 'clients'
output means a userspace application can correlate the fields, eg:
given a fdinfo id get the fdinfo name.
Geiven that client_id is a uint64_t, we use a %20llu printf format to
keep the output aligned (20 = digit count of the biggest uint64_t).
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://lore.kernel.org/r/20250526125505.2360-2-pierre-eric.pelloux-prayer@amd.com
| -rw-r--r-- | drivers/gpu/drm/drm_debugfs.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index 3dfd8b34dceb..abceb28b23fc 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -77,14 +77,15 @@ static int drm_clients_info(struct seq_file *m, void *data) kuid_t uid; seq_printf(m, - "%20s %5s %3s master a %5s %10s %*s\n", + "%20s %5s %3s master a %5s %10s %*s %20s\n", "command", "tgid", "dev", "uid", "magic", DRM_CLIENT_NAME_MAX_LEN, - "name"); + "name", + "id"); /* dev->filelist is sorted youngest first, but we want to present * oldest first (i.e. kernel, servers, clients), so walk backwardss. @@ -100,7 +101,7 @@ static int drm_clients_info(struct seq_file *m, void *data) pid = rcu_dereference(priv->pid); task = pid_task(pid, PIDTYPE_TGID); uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID; - seq_printf(m, "%20s %5d %3d %c %c %5d %10u %*s\n", + seq_printf(m, "%20s %5d %3d %c %c %5d %10u %*s %20llu\n", task ? task->comm : "<unknown>", pid_vnr(pid), priv->minor->index, @@ -109,7 +110,8 @@ static int drm_clients_info(struct seq_file *m, void *data) from_kuid_munged(seq_user_ns(m), uid), priv->magic, DRM_CLIENT_NAME_MAX_LEN, - priv->client_name ? priv->client_name : "<unset>"); + priv->client_name ? priv->client_name : "<unset>", + priv->client_id); rcu_read_unlock(); mutex_unlock(&priv->client_name_lock); } |