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drm/print: add drm_debug_enabled() 

Add helper to check if a drm debug category is enabled. Convert drm core
to use it. No functional changes.

v2: Move unlikely() to drm_debug_enabled() (Eric)

v3: Keep unlikely() when combined with other conditions (Eric)

Cc: Eric Engestrom <eric@engestrom.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001140614.26909-1-jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2019-10-01 17:06:14 +03:00
parent 959b077f26
commit f0a8f533ad
8 changed files with 18 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/drm_atomic_uapi.c
View File

@ -1406,7 +1406,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
ret = drm_atomic_nonblocking_commit(state);
} else {
if (unlikely(drm_debug & DRM_UT_STATE))
if (drm_debug_enabled(DRM_UT_STATE))
drm_atomic_print_state(state);
ret = drm_atomic_commit(state);

6
drivers/gpu/drm/drm_dp_mst_topology.c
View File

@ -1179,7 +1179,7 @@ static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb,
}
}
out:
if (unlikely(ret == -EIO && drm_debug & DRM_UT_DP)) {
if (unlikely(ret == -EIO) && drm_debug_enabled(DRM_UT_DP)) {
struct drm_printer p = drm_debug_printer(DBG_PREFIX);
drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);
@ -2322,7 +2322,7 @@ static int process_single_tx_qlock(struct drm_dp_mst_topology_mgr *mgr,
idx += tosend + 1;
ret = drm_dp_send_sideband_msg(mgr, up, chunk, idx);
if (unlikely(ret && drm_debug & DRM_UT_DP)) {
if (unlikely(ret) && drm_debug_enabled(DRM_UT_DP)) {
struct drm_printer p = drm_debug_printer(DBG_PREFIX);
drm_printf(&p, "sideband msg failed to send\n");
@ -2389,7 +2389,7 @@ static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr,
mutex_lock(&mgr->qlock);
list_add_tail(&txmsg->next, &mgr->tx_msg_downq);
if (unlikely(drm_debug & DRM_UT_DP)) {
if (drm_debug_enabled(DRM_UT_DP)) {
struct drm_printer p = drm_debug_printer(DBG_PREFIX);
drm_dp_mst_dump_sideband_msg_tx(&p, txmsg);

2
drivers/gpu/drm/drm_edid.c
View File

@ -1651,7 +1651,7 @@ static void connector_bad_edid(struct drm_connector *connector,
{
int i;
if (connector->bad_edid_counter++ && !(drm_debug & DRM_UT_KMS))
if (connector->bad_edid_counter++ && !drm_debug_enabled(DRM_UT_KMS))
return;
dev_warn(connector->dev->dev,

2
drivers/gpu/drm/drm_edid_load.c
View File

@ -175,7 +175,7 @@ static void *edid_load(struct drm_connector *connector, const char *name,
u8 *edid;
int fwsize, builtin;
int i, valid_extensions = 0;
bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);
bool print_bad_edid = !connector->bad_edid_counter || drm_debug_enabled(DRM_UT_KMS);
builtin = match_string(generic_edid_name, GENERIC_EDIDS, name);
if (builtin >= 0) {

4
drivers/gpu/drm/drm_mipi_dbi.c
View File

@ -783,7 +783,7 @@ static int mipi_dbi_spi1e_transfer(struct mipi_dbi *dbi, int dc,
int i, ret;
u8 *dst;
if (drm_debug & DRM_UT_DRIVER)
if (drm_debug_enabled(DRM_UT_DRIVER))
pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
__func__, dc, max_chunk);
@ -907,7 +907,7 @@ static int mipi_dbi_spi1_transfer(struct mipi_dbi *dbi, int dc,
max_chunk = dbi->tx_buf9_len;
dst16 = dbi->tx_buf9;
if (drm_debug & DRM_UT_DRIVER)
if (drm_debug_enabled(DRM_UT_DRIVER))
pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n",
__func__, dc, max_chunk);

4
drivers/gpu/drm/drm_print.c
View File

@ -262,7 +262,7 @@ void drm_dev_dbg(const struct device *dev, unsigned int category,
struct va_format vaf;
va_list args;
if (!(drm_debug & category))
if (!drm_debug_enabled(category))
return;
va_start(args, format);
@ -285,7 +285,7 @@ void drm_dbg(unsigned int category, const char *format, ...)
struct va_format vaf;
va_list args;
if (!(drm_debug & category))
if (!drm_debug_enabled(category))
return;
va_start(args, format);

6
drivers/gpu/drm/drm_vblank.c
View File

@ -332,7 +332,7 @@ u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc)
u64 vblank;
unsigned long flags;
WARN_ONCE(drm_debug & DRM_UT_VBL && !dev->driver->get_vblank_timestamp,
WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !dev->driver->get_vblank_timestamp,
"This function requires support for accurate vblank timestamps.");
spin_lock_irqsave(&dev->vblank_time_lock, flags);
@ -706,7 +706,7 @@ bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
*/
*vblank_time = ktime_sub_ns(etime, delta_ns);
if ((drm_debug & DRM_UT_VBL) == 0)
if (!drm_debug_enabled(DRM_UT_VBL))
return true;
ts_etime = ktime_to_timespec64(etime);
@ -1352,7 +1352,7 @@ void drm_vblank_restore(struct drm_device *dev, unsigned int pipe)
assert_spin_locked(&dev->vblank_time_lock);
vblank = &dev->vblank[pipe];
WARN_ONCE((drm_debug & DRM_UT_VBL) && !vblank->framedur_ns,
WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && !vblank->framedur_ns,
"Cannot compute missed vblanks without frame duration\n");
framedur_ns = vblank->framedur_ns;

5
include/drm/drm_print.h
View File

@ -293,6 +293,11 @@ static inline struct drm_printer drm_err_printer(const char *prefix)
#define DRM_UT_LEASE 0x80
#define DRM_UT_DP 0x100
static inline bool drm_debug_enabled(unsigned int category)
{
return unlikely(drm_debug & category);
}
__printf(3, 4)
void drm_dev_printk(const struct device *dev, const char *level,
const char *format, ...);