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Commit a037121c authored by Chris Wilson's avatar Chris Wilson
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drm/i915: Mark up debugfs with rpm wakeref tracking 

As debugfs has a simple pattern of taking a rpm wakeref around the user
access, we can track the local reference and drop it as soon as
possible.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-6-chris@chris-wilson.co.uk
parent 48d1c812
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Showing with 82 additions and 53 deletions
drivers/gpu/drm/i915/i915_debugfs.c
View file @ a037121c
......@@ -674,9 +674,10 @@ static int i915_interrupt_info(struct seq_file *m, void *data)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_engine_cs *engine;
enum intel_engine_id id;
intel_wakeref_t wakeref;
int i, pipe;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (IS_CHERRYVIEW(dev_priv)) {
seq_printf(m, "Master Interrupt Control:\t%08x\n",
......@@ -877,7 +878,7 @@ static int i915_interrupt_info(struct seq_file *m, void *data)
}
}
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -950,10 +951,11 @@ static int i915_gpu_info_open(struct inode *inode, struct file *file)
{
struct drm_i915_private *i915 = inode->i_private;
struct i915_gpu_state *gpu;
intel_wakeref_t wakeref;
intel_runtime_pm_get(i915);
wakeref = intel_runtime_pm_get(i915);
gpu = i915_capture_gpu_state(i915);
intel_runtime_pm_put_unchecked(i915);
intel_runtime_pm_put(i915, wakeref);
if (IS_ERR(gpu))
return PTR_ERR(gpu);
......@@ -1012,9 +1014,10 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_rps *rps = &dev_priv->gt_pm.rps;
intel_wakeref_t wakeref;
int ret = 0;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (IS_GEN(dev_priv, 5)) {
u16 rgvswctl = I915_READ16(MEMSWCTL);
......@@ -1226,7 +1229,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
seq_printf(m, "Max CD clock frequency: %d kHz\n", dev_priv->max_cdclk_freq);
seq_printf(m, "Max pixel clock frequency: %d kHz\n", dev_priv->max_dotclk_freq);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return ret;
}
......@@ -1265,6 +1268,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
u64 acthd[I915_NUM_ENGINES];
u32 seqno[I915_NUM_ENGINES];
struct intel_instdone instdone;
intel_wakeref_t wakeref;
enum intel_engine_id id;
if (test_bit(I915_WEDGED, &dev_priv->gpu_error.flags))
......@@ -1283,7 +1287,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
return 0;
}
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
for_each_engine(engine, dev_priv, id) {
acthd[id] = intel_engine_get_active_head(engine);
......@@ -1292,7 +1296,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
intel_engine_get_instdone(dev_priv->engine[RCS], &instdone);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
if (timer_pending(&dev_priv->gpu_error.hangcheck_work.timer))
seq_printf(m, "Hangcheck active, timer fires in %dms\n",
......@@ -1568,9 +1572,10 @@ static int gen6_drpc_info(struct seq_file *m)
static int i915_drpc_info(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
int err;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
err = vlv_drpc_info(m);
......@@ -1579,7 +1584,7 @@ static int i915_drpc_info(struct seq_file *m, void *unused)
else
err = ironlake_drpc_info(m);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return err;
}
......@@ -1601,11 +1606,12 @@ static int i915_fbc_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_fbc *fbc = &dev_priv->fbc;
intel_wakeref_t wakeref;
if (!HAS_FBC(dev_priv))
return -ENODEV;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
mutex_lock(&fbc->lock);
if (intel_fbc_is_active(dev_priv))
......@@ -1632,7 +1638,7 @@ static int i915_fbc_status(struct seq_file *m, void *unused)
}
mutex_unlock(&fbc->lock);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -1677,11 +1683,12 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_fbc_false_color_fops,
static int i915_ips_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
if (!HAS_IPS(dev_priv))
return -ENODEV;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
seq_printf(m, "Enabled by kernel parameter: %s\n",
yesno(i915_modparams.enable_ips));
......@@ -1695,7 +1702,7 @@ static int i915_ips_status(struct seq_file *m, void *unused)
seq_puts(m, "Currently: disabled\n");
}
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -1703,9 +1710,10 @@ static int i915_ips_status(struct seq_file *m, void *unused)
static int i915_sr_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
bool sr_enabled = false;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
if (INTEL_GEN(dev_priv) >= 9)
......@@ -1723,7 +1731,7 @@ static int i915_sr_status(struct seq_file *m, void *unused)
sr_enabled = I915_READ(FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
intel_display_power_put(dev_priv, POWER_DOMAIN_INIT);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
seq_printf(m, "self-refresh: %s\n", enableddisabled(sr_enabled));
......@@ -1735,29 +1743,30 @@ static int i915_emon_status(struct seq_file *m, void *unused)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_device *dev = &dev_priv->drm;
unsigned long temp, chipset, gfx;
intel_wakeref_t wakeref;
int ret;
if (!IS_GEN(dev_priv, 5))
return -ENODEV;
intel_runtime_pm_get(dev_priv);
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
wakeref = intel_runtime_pm_get(dev_priv);
temp = i915_mch_val(dev_priv);
chipset = i915_chipset_val(dev_priv);
gfx = i915_gfx_val(dev_priv);
mutex_unlock(&dev->struct_mutex);
intel_runtime_pm_put(dev_priv, wakeref);
seq_printf(m, "GMCH temp: %ld\n", temp);
seq_printf(m, "Chipset power: %ld\n", chipset);
seq_printf(m, "GFX power: %ld\n", gfx);
seq_printf(m, "Total power: %ld\n", chipset + gfx);
intel_runtime_pm_put_unchecked(dev_priv);
return 0;
}
......@@ -1766,13 +1775,14 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_rps *rps = &dev_priv->gt_pm.rps;
unsigned int max_gpu_freq, min_gpu_freq;
intel_wakeref_t wakeref;
int gpu_freq, ia_freq;
int ret;
if (!HAS_LLC(dev_priv))
return -ENODEV;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
if (ret)
......@@ -1805,7 +1815,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
mutex_unlock(&dev_priv->pcu_lock);
out:
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return ret;
}
......@@ -1978,8 +1988,9 @@ static const char *swizzle_string(unsigned swizzle)
static int i915_swizzle_info(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
swizzle_string(dev_priv->mm.bit_6_swizzle_x));
......@@ -2017,7 +2028,7 @@ static int i915_swizzle_info(struct seq_file *m, void *data)
if (dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES)
seq_puts(m, "L-shaped memory detected\n");
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -2054,9 +2065,11 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
struct drm_device *dev = &dev_priv->drm;
struct intel_rps *rps = &dev_priv->gt_pm.rps;
u32 act_freq = rps->cur_freq;
intel_wakeref_t wakeref;
struct drm_file *file;
if (intel_runtime_pm_get_if_in_use(dev_priv)) {
wakeref = intel_runtime_pm_get_if_in_use(dev_priv);
if (wakeref) {
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
mutex_lock(&dev_priv->pcu_lock);
act_freq = vlv_punit_read(dev_priv,
......@@ -2067,7 +2080,7 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
act_freq = intel_get_cagf(dev_priv,
I915_READ(GEN6_RPSTAT1));
}
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
}
seq_printf(m, "RPS enabled? %d\n", rps->enabled);
......@@ -2150,6 +2163,7 @@ static int i915_llc(struct seq_file *m, void *data)
static int i915_huc_load_status_info(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
struct drm_printer p;
if (!HAS_HUC(dev_priv))
......@@ -2158,9 +2172,9 @@ static int i915_huc_load_status_info(struct seq_file *m, void *data)
p = drm_seq_file_printer(m);
intel_uc_fw_dump(&dev_priv->huc.fw, &p);
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
seq_printf(m, "\nHuC status 0x%08x:\n", I915_READ(HUC_STATUS2));
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -2168,6 +2182,7 @@ static int i915_huc_load_status_info(struct seq_file *m, void *data)
static int i915_guc_load_status_info(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
struct drm_printer p;
u32 tmp, i;
......@@ -2177,7 +2192,7 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
p = drm_seq_file_printer(m);
intel_uc_fw_dump(&dev_priv->guc.fw, &p);
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
tmp = I915_READ(GUC_STATUS);
......@@ -2192,7 +2207,7 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
for (i = 0; i < 16; i++)
seq_printf(m, "\t%2d: \t0x%x\n", i, I915_READ(SOFT_SCRATCH(i)));
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -2550,6 +2565,7 @@ psr_source_status(struct drm_i915_private *dev_priv, struct seq_file *m)
static int i915_edp_psr_status(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
u32 psrperf = 0;
bool enabled = false;
bool sink_support;
......@@ -2562,7 +2578,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
if (!sink_support)
return 0;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
mutex_lock(&dev_priv->psr.lock);
seq_printf(m, "PSR mode: %s\n",
......@@ -2601,7 +2617,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
dev_priv->psr.last_exit);
}
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -2610,6 +2626,7 @@ i915_edp_psr_debug_set(void *data, u64 val)
{
struct drm_i915_private *dev_priv = data;
struct drm_modeset_acquire_ctx ctx;
intel_wakeref_t wakeref;
int ret;
if (!CAN_PSR(dev_priv))
......@@ -2617,7 +2634,7 @@ i915_edp_psr_debug_set(void *data, u64 val)
DRM_DEBUG_KMS("Setting PSR debug to %llx\n", val);
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
......@@ -2632,7 +2649,7 @@ i915_edp_psr_debug_set(void *data, u64 val)
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return ret;
}
......@@ -2657,15 +2674,16 @@ static int i915_energy_uJ(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
unsigned long long power;
intel_wakeref_t wakeref;
u32 units;
if (INTEL_GEN(dev_priv) < 6)
return -ENODEV;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &power)) {
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return -ENODEV;
}
......@@ -2673,7 +2691,7 @@ static int i915_energy_uJ(struct seq_file *m, void *data)
power = I915_READ(MCH_SECP_NRG_STTS);
power = (1000000 * power) >> units; /* convert to uJ */
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
seq_printf(m, "%llu", power);
......@@ -2742,6 +2760,7 @@ static int i915_power_domain_info(struct seq_file *m, void *unused)
static int i915_dmc_info(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
intel_wakeref_t wakeref;
struct intel_csr *csr;
if (!HAS_CSR(dev_priv))
......@@ -2749,7 +2768,7 @@ static int i915_dmc_info(struct seq_file *m, void *unused)
csr = &dev_priv->csr;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
seq_printf(m, "fw loaded: %s\n", yesno(csr->dmc_payload != NULL));
seq_printf(m, "path: %s\n", csr->fw_path);
......@@ -2775,7 +2794,7 @@ static int i915_dmc_info(struct seq_file *m, void *unused)
seq_printf(m, "ssp base: 0x%08x\n", I915_READ(CSR_SSP_BASE));
seq_printf(m, "htp: 0x%08x\n", I915_READ(CSR_HTP_SKL));
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -3065,8 +3084,10 @@ static int i915_display_info(struct seq_file *m, void *unused)
struct intel_crtc *crtc;
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
intel_wakeref_t wakeref;
wakeref = intel_runtime_pm_get(dev_priv);
intel_runtime_pm_get(dev_priv);
seq_printf(m, "CRTC info\n");
seq_printf(m, "---------\n");
for_each_intel_crtc(dev, crtc) {
......@@ -3114,7 +3135,7 @@ static int i915_display_info(struct seq_file *m, void *unused)
drm_connector_list_iter_end(&conn_iter);
mutex_unlock(&dev->mode_config.mutex);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -3123,10 +3144,11 @@ static int i915_engine_info(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_engine_cs *engine;
intel_wakeref_t wakeref;
enum intel_engine_id id;
struct drm_printer p;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
seq_printf(m, "GT awake? %s (epoch %u)\n",
yesno(dev_priv->gt.awake), dev_priv->gt.epoch);
......@@ -3139,7 +3161,7 @@ static int i915_engine_info(struct seq_file *m, void *unused)
for_each_engine(engine, dev_priv, id)
intel_engine_dump(engine, &p, "%s\n", engine->name);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -3252,6 +3274,7 @@ static ssize_t i915_ipc_status_write(struct file *file, const char __user *ubuf,
{
struct seq_file *m = file->private_data;
struct drm_i915_private *dev_priv = m->private;
intel_wakeref_t wakeref;
int ret;
bool enable;
......@@ -3259,13 +3282,15 @@ static ssize_t i915_ipc_status_write(struct file *file, const char __user *ubuf,
if (ret < 0)
return ret;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (!dev_priv->ipc_enabled && enable)
DRM_INFO("Enabling IPC: WM will be proper only after next commit\n");
dev_priv->wm.distrust_bios_wm = true;
dev_priv->ipc_enabled = enable;
intel_enable_ipc(dev_priv);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return len;
}
......@@ -4031,11 +4056,12 @@ static int
i915_drop_caches_set(void *data, u64 val)
{
struct drm_i915_private *i915 = data;
intel_wakeref_t wakeref;
int ret = 0;
DRM_DEBUG("Dropping caches: 0x%08llx [0x%08llx]\n",
val, val & DROP_ALL);
intel_runtime_pm_get(i915);
wakeref = intel_runtime_pm_get(i915);
if (val & DROP_RESET_ACTIVE && !intel_engines_are_idle(i915))
i915_gem_set_wedged(i915);
......@@ -4090,7 +4116,7 @@ i915_drop_caches_set(void *data, u64 val)
i915_gem_drain_freed_objects(i915);
out:
intel_runtime_pm_put_unchecked(i915);
intel_runtime_pm_put(i915, wakeref);
return ret;
}
......@@ -4103,16 +4129,17 @@ static int
i915_cache_sharing_get(void *data, u64 *val)
{
struct drm_i915_private *dev_priv = data;
intel_wakeref_t wakeref;
u32 snpcr;
if (!(IS_GEN_RANGE(dev_priv, 6, 7)))
return -ENODEV;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
*val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
......@@ -4123,6 +4150,7 @@ static int
i915_cache_sharing_set(void *data, u64 val)
{
struct drm_i915_private *dev_priv = data;
intel_wakeref_t wakeref;
u32 snpcr;
if (!(IS_GEN_RANGE(dev_priv, 6, 7)))
......@@ -4131,7 +4159,7 @@ i915_cache_sharing_set(void *data, u64 val)
if (val > 3)
return -EINVAL;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val);
/* Update the cache sharing policy here as well */
......@@ -4140,7 +4168,7 @@ i915_cache_sharing_set(void *data, u64 val)
snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
return 0;
}
......@@ -4362,6 +4390,7 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
if (INTEL_GEN(dev_priv) < 8)
return -ENODEV;
......@@ -4376,7 +4405,7 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
sseu.max_eus_per_subslice =
RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
intel_runtime_pm_get(dev_priv);
wakeref = intel_runtime_pm_get(dev_priv);
if (IS_CHERRYVIEW(dev_priv)) {
cherryview_sseu_device_status(dev_priv, &sseu);
......@@ -4388,7 +4417,7 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
gen10_sseu_device_status(dev_priv, &sseu);
}
intel_runtime_pm_put_unchecked(dev_priv);
intel_runtime_pm_put(dev_priv, wakeref);
i915_print_sseu_info(m, false, &sseu);
......
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