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| author | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2019-11-11 11:53:08 +0200 |
|---|---|---|
| committer | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2019-11-11 12:14:01 +0200 |
| commit | 0b0120d4c7b013eba59b33254febc0a6e4049e13 (patch) | |
| tree | e01a6a0304671d3d31f349e1bc92e44c68f398f3 /drivers/gpu/drm/i915/i915_perf.c | |
| parent | baea9ffe64200033499a4955f431e315bb807899 (diff) | |
| download | linux-0b0120d4c7b013eba59b33254febc0a6e4049e13.tar.bz2 | |
drm/i915/perf: always consider holding preemption a privileged op
The ordering of the checks in the existing code can lead to holding
preemption not being considered as privileged op.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 9cd20ef7803c ("drm/i915/perf: allow holding preemption on filtered ctx")
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191111095308.2550-1-lionel.g.landwerlin@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_perf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_perf.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 2c380aba1ce9..507236bd41ae 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -3312,15 +3312,6 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf, } } - if (props->hold_preemption) { - if (!props->single_context) { - DRM_DEBUG("preemption disable with no context\n"); - ret = -EINVAL; - goto err; - } - privileged_op = true; - } - /* * On Haswell the OA unit supports clock gating off for a specific * context and in this mode there's no visibility of metrics for the @@ -3340,12 +3331,21 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf, * doesn't request global stream access (i.e. query based sampling * using MI_RECORD_PERF_COUNT. */ - if (IS_HASWELL(perf->i915) && specific_ctx && !props->hold_preemption) + if (IS_HASWELL(perf->i915) && specific_ctx) privileged_op = false; else if (IS_GEN(perf->i915, 12) && specific_ctx && (props->sample_flags & SAMPLE_OA_REPORT) == 0) privileged_op = false; + if (props->hold_preemption) { + if (!props->single_context) { + DRM_DEBUG("preemption disable with no context\n"); + ret = -EINVAL; + goto err; + } + privileged_op = true; + } + /* Similar to perf's kernel.perf_paranoid_cpu sysctl option * we check a dev.i915.perf_stream_paranoid sysctl option * to determine if it's ok to access system wide OA counters |