The intention here is to make the output of dmesg with full verbosity a bit easier for a human to parse. This commit transforms:

[drm:drm_ioctl], pid=699, cmd=0x6458, nr=0x58, dev 0xe200, auth=1 [drm:drm_ioctl], pid=699, cmd=0xc010645b, nr=0x5b, dev 0xe200, auth=1 [drm:drm_ioctl], pid=699, cmd=0xc0106461, nr=0x61, dev 0xe200, auth=1 [drm:drm_ioctl], pid=699, cmd=0xc01c64ae, nr=0xae, dev 0xe200, auth=1 [drm:drm_mode_addfb], [FB:32] [drm:drm_ioctl], pid=699, cmd=0xc0106464, nr=0x64, dev 0xe200, auth=1 [drm:drm_vm_open_locked], 0x7fd9302fe000,0x00a00000 [drm:drm_ioctl], pid=699, cmd=0x400c645f, nr=0x5f, dev 0xe200, auth=1 [drm:drm_ioctl], pid=699, cmd=0xc00464af, nr=0xaf, dev 0xe200, auth=1 [drm:intel_crtc_set_config], [CRTC:3] [NOFB]

into:

[drm:drm_ioctl], pid=699, dev=0xe200, auth=1, I915_GEM_THROTTLE [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, I915_GEM_CREATE [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, I915_GEM_SET_TILING [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, IOCTL_MODE_ADDFB [drm:drm_mode_addfb], [FB:32] [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, I915_GEM_MMAP_GTT [drm:drm_vm_open_locked], 0x7fd9302fe000,0x00a00000 [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, I915_GEM_SET_DOMAIN [drm:drm_ioctl], pid=699, dev=0xe200, auth=1, DRM_IOCTL_MODE_RMFB [drm:intel_crtc_set_config], [CRTC:3] [NOFB]

Signed-off-by: Chris Cummins christopher.e.cummins@intel.com --- drivers/gpu/drm/drm_drv.c | 20 +++++++++++++------- include/drm/drmP.h | 3 ++- 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index be174ca..6480d92 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -57,7 +57,7 @@ static int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv);

#define DRM_IOCTL_DEF(ioctl, _func, _flags) \ - [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0} + [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0, .name = #ioctl}

/** Ioctl table */ static struct drm_ioctl_desc drm_ioctls[] = { @@ -376,7 +376,7 @@ long drm_ioctl(struct file *filp, { struct drm_file *file_priv = filp->private_data; struct drm_device *dev; - struct drm_ioctl_desc *ioctl; + struct drm_ioctl_desc *ioctl = NULL; drm_ioctl_t *func; unsigned int nr = DRM_IOCTL_NR(cmd); int retcode = -EINVAL; @@ -393,11 +393,6 @@ long drm_ioctl(struct file *filp, atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); ++file_priv->ioctl_count;

- DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", - task_pid_nr(current), cmd, nr, - (long)old_encode_dev(file_priv->minor->device), - file_priv->authenticated); - if ((nr >= DRM_CORE_IOCTL_COUNT) && ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) goto err_i1; @@ -417,6 +412,11 @@ long drm_ioctl(struct file *filp, } else goto err_i1;

+ DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n", + task_pid_nr(current), + (long)old_encode_dev(file_priv->minor->device), + file_priv->authenticated, ioctl->name); + /* Do not trust userspace, use our own definition */ func = ioctl->func; /* is there a local override? */ @@ -471,6 +471,12 @@ long drm_ioctl(struct file *filp, }

err_i1: + if (!ioctl) + DRM_DEBUG("invalid iotcl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02x, nr=0x%02x\n", + task_pid_nr(current), + (long)old_encode_dev(file_priv->minor->device), + file_priv->authenticated, cmd, nr); + if (kdata != stack_kdata) kfree(kdata); atomic_dec(&dev->ioctl_count); diff --git a/include/drm/drmP.h b/include/drm/drmP.h index fad21c9..b55ba15 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -313,6 +313,7 @@ struct drm_ioctl_desc { int flags; drm_ioctl_t *func; unsigned int cmd_drv; + const char *name; };

/** @@ -321,7 +322,7 @@ struct drm_ioctl_desc { */

#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ - [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} + [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}

struct drm_magic_entry { struct list_head head;