From: Robert Bragg Date: Thu, 1 Dec 2016 17:21:52 +0000 (+0000) Subject: drm/i915/perf: use DRM_DEBUG for userspace issues X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7708550ce5794d76dce5be608a9a91353c1bb98b;p=linux-beck.git drm/i915/perf: use DRM_DEBUG for userspace issues Avoid using DRM_ERROR for conditions userspace can trigger with a bad config when opening a stream or from not reading data in a timely fashion (whereby the OA buffer fills up). These conditions are tested by i-g-t which treats error messages as failures if using the test runner. This wasn't an issue while the i915-perf igt tests were being run in isolation. One message relating to seeing a spurious zeroed report was changed to use DRM_NOTE instead of DRM_ERROR. Ideally this warning shouldn't be seen, but it's not a serious problem if it is. Considering that the tail margin mechanism is only a heuristic it's possible we might see this from time to time. Signed-off-by: Robert Bragg Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161201172152.10893-1-robert@sixbynine.org --- diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 5669f0862458..0c6e12428194 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -474,7 +474,7 @@ static int gen7_append_oa_reports(struct i915_perf_stream *stream, * copying it to userspace... */ if (report32[0] == 0) { - DRM_ERROR("Skipping spurious, invalid OA report\n"); + DRM_NOTE("Skipping spurious, invalid OA report\n"); continue; } @@ -551,7 +551,7 @@ static int gen7_oa_read(struct i915_perf_stream *stream, if (ret) return ret; - DRM_ERROR("OA buffer overflow: force restart\n"); + DRM_DEBUG("OA buffer overflow: force restart\n"); dev_priv->perf.oa.ops.oa_disable(dev_priv); dev_priv->perf.oa.ops.oa_enable(dev_priv); @@ -1000,17 +1000,17 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, * IDs */ if (!dev_priv->perf.metrics_kobj) { - DRM_ERROR("OA metrics weren't advertised via sysfs\n"); + DRM_DEBUG("OA metrics weren't advertised via sysfs\n"); return -EINVAL; } if (!(props->sample_flags & SAMPLE_OA_REPORT)) { - DRM_ERROR("Only OA report sampling supported\n"); + DRM_DEBUG("Only OA report sampling supported\n"); return -EINVAL; } if (!dev_priv->perf.oa.ops.init_oa_buffer) { - DRM_ERROR("OA unit not supported\n"); + DRM_DEBUG("OA unit not supported\n"); return -ENODEV; } @@ -1019,17 +1019,17 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, * we currently only allow exclusive access */ if (dev_priv->perf.oa.exclusive_stream) { - DRM_ERROR("OA unit already in use\n"); + DRM_DEBUG("OA unit already in use\n"); return -EBUSY; } if (!props->metrics_set) { - DRM_ERROR("OA metric set not specified\n"); + DRM_DEBUG("OA metric set not specified\n"); return -EINVAL; } if (!props->oa_format) { - DRM_ERROR("OA report format not specified\n"); + DRM_DEBUG("OA report format not specified\n"); return -EINVAL; } @@ -1385,7 +1385,7 @@ i915_perf_open_ioctl_locked(struct drm_i915_private *dev_priv, if (IS_ERR(specific_ctx)) { ret = PTR_ERR(specific_ctx); if (ret != -EINTR) - DRM_ERROR("Failed to look up context with ID %u for opening perf stream\n", + DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n", ctx_handle); goto err; } @@ -1398,7 +1398,7 @@ i915_perf_open_ioctl_locked(struct drm_i915_private *dev_priv, */ if (!specific_ctx && i915_perf_stream_paranoid && !capable(CAP_SYS_ADMIN)) { - DRM_ERROR("Insufficient privileges to open system-wide i915 perf stream\n"); + DRM_DEBUG("Insufficient privileges to open system-wide i915 perf stream\n"); ret = -EACCES; goto err_ctx; } @@ -1477,7 +1477,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv, memset(props, 0, sizeof(struct perf_open_properties)); if (!n_props) { - DRM_ERROR("No i915 perf properties given"); + DRM_DEBUG("No i915 perf properties given\n"); return -EINVAL; } @@ -1488,7 +1488,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv, * from userspace. */ if (n_props >= DRM_I915_PERF_PROP_MAX) { - DRM_ERROR("More i915 perf properties specified than exist"); + DRM_DEBUG("More i915 perf properties specified than exist\n"); return -EINVAL; } @@ -1516,26 +1516,26 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv, case DRM_I915_PERF_PROP_OA_METRICS_SET: if (value == 0 || value > dev_priv->perf.oa.n_builtin_sets) { - DRM_ERROR("Unknown OA metric set ID"); + DRM_DEBUG("Unknown OA metric set ID\n"); return -EINVAL; } props->metrics_set = value; break; case DRM_I915_PERF_PROP_OA_FORMAT: if (value == 0 || value >= I915_OA_FORMAT_MAX) { - DRM_ERROR("Invalid OA report format\n"); + DRM_DEBUG("Invalid OA report format\n"); return -EINVAL; } if (!dev_priv->perf.oa.oa_formats[value].size) { - DRM_ERROR("Invalid OA report format\n"); + DRM_DEBUG("Invalid OA report format\n"); return -EINVAL; } props->oa_format = value; break; case DRM_I915_PERF_PROP_OA_EXPONENT: if (value > OA_EXPONENT_MAX) { - DRM_ERROR("OA timer exponent too high (> %u)\n", - OA_EXPONENT_MAX); + DRM_DEBUG("OA timer exponent too high (> %u)\n", + OA_EXPONENT_MAX); return -EINVAL; } @@ -1566,7 +1566,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv, if (oa_freq_hz > i915_oa_max_sample_rate && !capable(CAP_SYS_ADMIN)) { - DRM_ERROR("OA exponent would exceed the max sampling frequency (sysctl dev.i915.oa_max_sample_rate) %uHz without root privileges\n", + DRM_DEBUG("OA exponent would exceed the max sampling frequency (sysctl dev.i915.oa_max_sample_rate) %uHz without root privileges\n", i915_oa_max_sample_rate); return -EACCES; } @@ -1576,7 +1576,7 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv, break; default: MISSING_CASE(id); - DRM_ERROR("Unknown i915 perf property ID"); + DRM_DEBUG("Unknown i915 perf property ID\n"); return -EINVAL; } @@ -1596,7 +1596,7 @@ int i915_perf_open_ioctl(struct drm_device *dev, void *data, int ret; if (!dev_priv->perf.initialized) { - DRM_ERROR("i915 perf interface not available for this system"); + DRM_DEBUG("i915 perf interface not available for this system\n"); return -ENOTSUPP; } @@ -1604,7 +1604,7 @@ int i915_perf_open_ioctl(struct drm_device *dev, void *data, I915_PERF_FLAG_FD_NONBLOCK | I915_PERF_FLAG_DISABLED; if (param->flags & ~known_open_flags) { - DRM_ERROR("Unknown drm_i915_perf_open_param flag\n"); + DRM_DEBUG("Unknown drm_i915_perf_open_param flag\n"); return -EINVAL; }