From: Chris Wilson Date: Mon, 14 Jan 2019 14:21:14 +0000 (+0000) Subject: drm/i915: Mark up debugfs with rpm wakeref tracking X-Git-Tag: Ubuntu-5.2.0-15.16~2427^2~19^2~89 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a037121c3c7fb7e3d88f9a27d3d77581404f9b1d;p=mirror_ubuntu-eoan-kernel.git 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: Chris Wilson Cc: Jani Nikula Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-6-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 6818079669a7..66c520ba0df8 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -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 @@ retry: 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 @@ out: 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);