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This patch initializes the last_stats[] for registers prior to starting

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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.dodonov@intel.com>
This commit is contained in:
Eugeni Dodonov 2011-09-05 19:35:44 -03:00
parent f11f8d9aac
commit 83047e9a5e
1 changed files with 16 additions and 0 deletions
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16
tools/intel_gpu_top.c
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@ -473,6 +473,22 @@ 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;