diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-06-11 19:21:27 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-06-13 20:28:20 +0300 |
| commit | a49906e26616c405d41631d5e1b0be0a366d2c30 (patch) | |
| tree | 1e7fc255a2efb694d67ab00342c4881ee3fa79ec /lib | |
| parent | aba3582bb402b5cb5e48d81c5e32231fa42634d7 (diff) | |
lib/igt_debufs: Add IGT_NO_FORCEWAKE environment variable
If IGT_NO_FORCEWAKE is set, skip the forcewake open. Useful when you
want to poke at register without otherwise disturbing the GPU.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/igt_debugfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c index 809d447b..2f655a1d 100644 --- a/lib/igt_debugfs.c +++ b/lib/igt_debugfs.c @@ -618,6 +618,8 @@ void igt_enable_prefault(void) */ int igt_open_forcewake_handle(void) { + if (getenv("IGT_NO_FORCEWAKE")) + return -1; return igt_debugfs_open("i915_forcewake_user", O_WRONLY); } |