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[host] measure ready time at framebuffer publication

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Exclude command queue reset and cleanup from the ready stage, and keep
the wall-clock residual only as the legacy timing fallback.
This commit is contained in:
Geoffrey McRae
2026-08-03 16:22:07 +10:00
parent aa289fa022
commit 24be0a8869
16 changed files with 157 additions and 67 deletions
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18
common/include/common/KVMFR.h
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@@ -30,7 +30,7 @@
#include "LGMPConfig.h"
#define KVMFR_MAGIC "KVMFR---"
#define KVMFR_VERSION 24
#define KVMFR_VERSION 25
// Fallback used by producers that cannot report the source display's SDR
// white level. IDD frames override this with IDDCX_METADATA2::SdrWhiteLevel.
@@ -201,12 +201,18 @@ typedef struct KVMFRFrame
uint64_t captureTime;
uint64_t postProcessTime;
uint64_t copyTime;
// Time from copy completion until FrameBuffer::wp publishes readiness.
uint64_t readyTime;
// Published after the timing fields and matched against frameSerial by the
// client. timingValid is written last by the producer.
uint32_t timingSerial;
uint32_t timingValid;
// Keep the conditional HDR block and damage rectangles on separate cache
// lines from the producer timing fields.
uint8_t timingReserved[24];
// HDR static metadata (valid when FRAME_FLAG_HDR_METADATA is set)
// Display color primaries in 0.00002 units (SMPTE ST 2086 format)
uint16_t hdrDisplayPrimary[3][2]; // Rx,Ry, Gx,Gy, Bx,By
@@ -220,6 +226,8 @@ typedef struct KVMFRFrame
uint32_t hdrMaxContentLightLevel; // MaxCLL (cd/m²)
uint32_t hdrMaxFrameAverageLightLevel; // MaxFALL (cd/m²)
uint8_t hdrReserved[32];
FrameDamageRect damageRects[KVMFR_MAX_DAMAGE_RECTS];
}
KVMFRFrame;
@@ -227,12 +235,16 @@ KVMFRFrame;
#if defined(__cplusplus)
static_assert(offsetof(KVMFRFrame, captureTime) == 64,
"KVMFRFrame hot fields must fit in one cache line");
static_assert(offsetof(KVMFRFrame, damageRects) == 128,
static_assert(offsetof(KVMFRFrame, hdrDisplayPrimary) == 128,
"KVMFRFrame HDR metadata must be cache-line aligned");
static_assert(offsetof(KVMFRFrame, damageRects) == 192,
"KVMFRFrame damage rectangles must be cache-line aligned");
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
_Static_assert(offsetof(KVMFRFrame, captureTime) == 64,
"KVMFRFrame hot fields must fit in one cache line");
_Static_assert(offsetof(KVMFRFrame, damageRects) == 128,
_Static_assert(offsetof(KVMFRFrame, hdrDisplayPrimary) == 128,
"KVMFRFrame HDR metadata must be cache-line aligned");
_Static_assert(offsetof(KVMFRFrame, damageRects) == 192,
"KVMFRFrame damage rectangles must be cache-line aligned");
#endif