diff options
| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2022-09-28 12:02:12 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2022-09-28 16:39:26 -0400 |
| commit | 7738be973fc4e2ba22154fafd3a5d7b9666f9abf (patch) | |
| tree | d5149c11dfc508e58f495d0f447bf37e2b87c213 /tools/cgroup | |
| parent | 6ef7d362123ecb5bf6d163bb9c7fd6ba2d8c968c (diff) | |
drm/i915/gt: Perf_limit_reasons are only available for Gen11+
Register GT0_PERF_LIMIT_REASONS (0x1381a8) is available only for
Gen11+. Therefore ensure perf_limit_reasons sysfs files are created only
for Gen11+. Otherwise on Gen < 5 accessing these files results in the
following oops:
<1> [88.829420] BUG: unable to handle page fault for address: ffffc90000bb81a8
<1> [88.829438] #PF: supervisor read access in kernel mode
<1> [88.829447] #PF: error_code(0x0000) - not-present page
This patch is a backport of the drm-tip commit 0d2d201095e9
("drm/i915: Perf_limit_reasons are only available for Gen11+") to
drm-intel-fixes. The backport is not identical to the original, it only
includes the sysfs portions of if. The debugfs portion is not available
in drm-intel-fixes so has not been backported.
Bspec: 20008
Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/6863
Fixes: fa68bff7cf27 ("drm/i915/gt: Add sysfs throttle frequency interfaces")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220919162401.2077713-1-ashutosh.dixit@intel.com
(backported from commit 0d2d201095e9f141d6a9fb44320afce761f8b5c2)
Diffstat (limited to 'tools/cgroup')
0 files changed, 0 insertions, 0 deletions