From: Eugeni Dodonov <eugeni.dodo...@intel.com>
This patch initializes the last_stats[] for registers prior to starting
the monitoring itself. This way, the first measure will already contain
the difference from the previous value instead of non-initialized value.
Signed-off-by: Eugeni Dodonov <eugeni.dodo...@intel.com>
---
tools/intel_gpu_top.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index edb4a82..e2dd173 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -475,6 +475,22 @@ int main(int argc, char **argv)
ring_init(&blt_ring);
}
+ /* Initialize GPU stats */
+ if (HAS_STATS_REGS(devid)) {
+ for (i = 0; i < STATS_COUNT; i++) {
+ uint32_t stats_high, stats_low, stats_high_2;
+
+ do {
+ stats_high = INREG(stats_regs[i] + 4);
+ stats_low = INREG(stats_regs[i]);
+ stats_high_2 = INREG(stats_regs[i] + 4);
+ } while (stats_high != stats_high_2);
+
+ last_stats[i] = (uint64_t)stats_high << 32 |
+ stats_low;
+ }
+ }
+
for (;;) {
int j;
unsigned long long t1, ti, tf;
--
1.7.6.1
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