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| author | Ben Widawsky <ben@bwidawsk.net> | 2012-03-28 05:59:38 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-04-12 23:14:04 +0400 |
| commit | cce66a283e36e7479774de47ae9f33f7db2b8fcf (patch) | |
| tree | 62692ee5aa2c45b53c50388401f881f92c837ca3 | |
| parent | effbc4fd8e37e41d6f2bb6bcc611c14b4fbdcf9b (diff) | |
| download | linux-cce66a283e36e7479774de47ae9f33f7db2b8fcf.tar.xz | |
drm/i915: add rc6 residency times to debugfs
RC6 residency should be in intervals of 1.28us, and the counter wraps.
Here is an example using awk to get the various RC6 and RC6+ residency
times in seconds, since boot.
cat /sys/kernel/debug/dri/0/i915_drpc_info | grep residency | awk -F':' -F' ' '{print $5 * 1.28 / 1000000}'
This is primarily for QA, but has other applications as well. An
upcoming patch to add interfaces should be more interesting to
application developers.
v2: move comment to the correct place
v3: display with %u instead of %d, for Ouping
CC: Ouping Zhang <ouping.zhang@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 5 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 967fb928c577..97c963082d4d 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1171,6 +1171,17 @@ static int gen6_drpc_info(struct seq_file *m) seq_printf(m, "Core Power Down: %s\n", yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK)); + + /* Not exactly sure what this is */ + seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n", + I915_READ(GEN6_GT_GFX_RC6_LOCKED)); + seq_printf(m, "RC6 residency since boot: %u\n", + I915_READ(GEN6_GT_GFX_RC6)); + seq_printf(m, "RC6+ residency since boot: %u\n", + I915_READ(GEN6_GT_GFX_RC6p)); + seq_printf(m, "RC6++ residency since boot: %u\n", + I915_READ(GEN6_GT_GFX_RC6pp)); + return 0; } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 6924f44a88df..972321fda4d8 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3970,6 +3970,11 @@ GEN6_PM_RP_DOWN_THRESHOLD | \ GEN6_PM_RP_DOWN_TIMEOUT) +#define GEN6_GT_GFX_RC6_LOCKED 0x138104 +#define GEN6_GT_GFX_RC6 0x138108 +#define GEN6_GT_GFX_RC6p 0x13810C +#define GEN6_GT_GFX_RC6pp 0x138110 + #define GEN6_PCODE_MAILBOX 0x138124 #define GEN6_PCODE_READY (1<<31) #define GEN6_READ_OC_PARAMS 0xc |