mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2025-03-16 13:28:18 +00:00
e984154090
Added Memory Bandwith Allocation (MBA) capability discovery. Refined RDT monitoring capability detection; Cache Monitoring Technology (CMT) and Memory Bandwidth Monitoring (MBM) capabilities can be detected separately.
26 lines
685 B
C
26 lines
685 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include "machine.h"
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int main(int argc, char *argv[]) {
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struct cpuid_out res;
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// Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c
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lcpuid(0x7, 0x0, &res);
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if (!(res.ebx & (1 << 12))) {
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return EXIT_FAILURE;
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}
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// check for overall monitoring capability first
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lcpuid(0xf, 0x0, &res);
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if (!(res.edx & (1 << 1))) {
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return EXIT_FAILURE;
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}
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// check for more detailed capability, MBM monitoring
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lcpuid(0xf, 0x1, &res);
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if ((res.edx & (3 << 1)) != (3 << 1)) {
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return EXIT_FAILURE;
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}
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// If we are here, then MBM cache monitoring capability is available.
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return EXIT_SUCCESS;
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}
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