[Intel-gfx] [PATCH 1/6] drm/i915: Use drm_connector_list_iter in debugfs
Daniel Vetter
daniel.vetter at ffwll.ch
Wed Mar 1 09:52:21 UTC 2017
While at it also try to reduce the locking a bit to what's really just
needed instead of everything that we could possibly lock.
Added a new for_each_intel_connector_iter which includes the cast to
intel_connector.
Otherwise just plain transformation with nothing special going on.
v2: Review from Maarten:
- Stick with modeset_lock_all in sink_crc, it looks at crtc->state.
- Fix up early loop exit in i915_displayport_test_active_write.
v3: Rebase onto the iter_get/put->iter_begin/end rename.
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com> (v2)
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 59 ++++++++++++++++++++++++-------------
drivers/gpu/drm/i915/i915_drv.h | 3 ++
2 files changed, 42 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 1a28b5279bec..7449458131aa 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2730,12 +2730,14 @@ static int i915_sink_crc(struct seq_file *m, void *data)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_device *dev = &dev_priv->drm;
struct intel_connector *connector;
+ struct drm_connector_list_iter conn_iter;
struct intel_dp *intel_dp = NULL;
int ret;
u8 crc[6];
drm_modeset_lock_all(dev);
- for_each_intel_connector(dev, connector) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ for_each_intel_connector_iter(connector, &conn_iter) {
struct drm_crtc *crtc;
if (!connector->base.state->best_encoder)
@@ -2761,6 +2763,7 @@ static int i915_sink_crc(struct seq_file *m, void *data)
}
ret = -ENODEV;
out:
+ drm_connector_list_iter_end(&conn_iter);
drm_modeset_unlock_all(dev);
return ret;
}
@@ -3197,9 +3200,9 @@ static int i915_display_info(struct seq_file *m, void *unused)
struct drm_device *dev = &dev_priv->drm;
struct intel_crtc *crtc;
struct drm_connector *connector;
+ struct drm_connector_list_iter conn_iter;
intel_runtime_pm_get(dev_priv);
- drm_modeset_lock_all(dev);
seq_printf(m, "CRTC info\n");
seq_printf(m, "---------\n");
for_each_intel_crtc(dev, crtc) {
@@ -3207,6 +3210,7 @@ static int i915_display_info(struct seq_file *m, void *unused)
struct intel_crtc_state *pipe_config;
int x, y;
+ drm_modeset_lock(&crtc->base.mutex, NULL);
pipe_config = to_intel_crtc_state(crtc->base.state);
seq_printf(m, "CRTC %d: pipe: %c, active=%s, (size=%dx%d), dither=%s, bpp=%d\n",
@@ -3231,15 +3235,19 @@ static int i915_display_info(struct seq_file *m, void *unused)
seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n",
yesno(!crtc->cpu_fifo_underrun_disabled),
yesno(!crtc->pch_fifo_underrun_disabled));
+ drm_modeset_unlock(&crtc->base.mutex);
}
seq_printf(m, "\n");
seq_printf(m, "Connector info\n");
seq_printf(m, "--------------\n");
- list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ mutex_lock(&dev->mode_config.mutex);
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter)
intel_connector_info(m, connector);
- }
- drm_modeset_unlock_all(dev);
+ drm_connector_list_iter_end(&conn_iter);
+ mutex_unlock(&dev->mode_config.mutex);
+
intel_runtime_pm_put(dev_priv);
return 0;
@@ -3566,13 +3574,16 @@ static void drrs_status_per_crtc(struct seq_file *m,
struct i915_drrs *drrs = &dev_priv->drrs;
int vrefresh = 0;
struct drm_connector *connector;
+ struct drm_connector_list_iter conn_iter;
- drm_for_each_connector(connector, dev) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->state->crtc != &intel_crtc->base)
continue;
seq_printf(m, "%s:\n", connector->name);
}
+ drm_connector_list_iter_end(&conn_iter);
if (dev_priv->vbt.drrs_type == STATIC_DRRS_SUPPORT)
seq_puts(m, "\tVBT: DRRS_type: Static");
@@ -3658,9 +3669,10 @@ static int i915_dp_mst_info(struct seq_file *m, void *unused)
struct intel_encoder *intel_encoder;
struct intel_digital_port *intel_dig_port;
struct drm_connector *connector;
+ struct drm_connector_list_iter conn_iter;
- drm_modeset_lock_all(dev);
- drm_for_each_connector(connector, dev) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -3676,7 +3688,8 @@ static int i915_dp_mst_info(struct seq_file *m, void *unused)
port_name(intel_dig_port->port));
drm_dp_mst_dump_topology(m, &intel_dig_port->dp.mst_mgr);
}
- drm_modeset_unlock_all(dev);
+ drm_connector_list_iter_end(&conn_iter);
+
return 0;
}
@@ -3688,14 +3701,12 @@ static ssize_t i915_displayport_test_active_write(struct file *file,
int status = 0;
struct drm_device *dev;
struct drm_connector *connector;
- struct list_head *connector_list;
+ struct drm_connector_list_iter conn_iter;
struct intel_dp *intel_dp;
int val = 0;
dev = ((struct seq_file *)file->private_data)->private;
- connector_list = &dev->mode_config.connector_list;
-
if (len == 0)
return 0;
@@ -3711,7 +3722,8 @@ static ssize_t i915_displayport_test_active_write(struct file *file,
input_buffer[len] = '\0';
DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
- list_for_each_entry(connector, connector_list, head) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type !=
DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -3721,7 +3733,7 @@ static ssize_t i915_displayport_test_active_write(struct file *file,
intel_dp = enc_to_intel_dp(connector->encoder);
status = kstrtoint(input_buffer, 10, &val);
if (status < 0)
- goto out;
+ break;
DRM_DEBUG_DRIVER("Got %d for test active\n", val);
/* To prevent erroneous activation of the compliance
* testing code, only accept an actual value of 1 here
@@ -3732,6 +3744,7 @@ static ssize_t i915_displayport_test_active_write(struct file *file,
intel_dp->compliance.test_active = 0;
}
}
+ drm_connector_list_iter_end(&conn_iter);
out:
kfree(input_buffer);
if (status < 0)
@@ -3745,10 +3758,11 @@ static int i915_displayport_test_active_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
struct drm_connector *connector;
- struct list_head *connector_list = &dev->mode_config.connector_list;
+ struct drm_connector_list_iter conn_iter;
struct intel_dp *intel_dp;
- list_for_each_entry(connector, connector_list, head) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type !=
DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -3763,6 +3777,7 @@ static int i915_displayport_test_active_show(struct seq_file *m, void *data)
} else
seq_puts(m, "0");
}
+ drm_connector_list_iter_end(&conn_iter);
return 0;
}
@@ -3789,10 +3804,11 @@ static int i915_displayport_test_data_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
struct drm_connector *connector;
- struct list_head *connector_list = &dev->mode_config.connector_list;
+ struct drm_connector_list_iter conn_iter;
struct intel_dp *intel_dp;
- list_for_each_entry(connector, connector_list, head) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type !=
DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -3816,6 +3832,7 @@ static int i915_displayport_test_data_show(struct seq_file *m, void *data)
} else
seq_puts(m, "0");
}
+ drm_connector_list_iter_end(&conn_iter);
return 0;
}
@@ -3840,10 +3857,11 @@ static int i915_displayport_test_type_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
struct drm_connector *connector;
- struct list_head *connector_list = &dev->mode_config.connector_list;
+ struct drm_connector_list_iter conn_iter;
struct intel_dp *intel_dp;
- list_for_each_entry(connector, connector_list, head) {
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->connector_type !=
DRM_MODE_CONNECTOR_DisplayPort)
continue;
@@ -3855,6 +3873,7 @@ static int i915_displayport_test_type_show(struct seq_file *m, void *data)
} else
seq_puts(m, "0");
}
+ drm_connector_list_iter_end(&conn_iter);
return 0;
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bc9283beda3e..eb670d819134 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -494,6 +494,9 @@ struct i915_hotplug {
&(dev)->mode_config.connector_list, \
base.head)
+#define for_each_intel_connector_iter(intel_connector, iter) \
+ while ((intel_connector = to_intel_connector(drm_connector_list_iter_next(iter))))
+
#define for_each_encoder_on_crtc(dev, __crtc, intel_encoder) \
list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \
for_each_if ((intel_encoder)->base.crtc == (__crtc))
--
2.11.0
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