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Merge pull request #60 from balajismaniam/clean-up-rdt-helpers

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Automatic merge from submit-queue

Clean-up RDT helper programs.

Manually tested.
This commit is contained in:
nfd-merge-bot 2016-12-12 12:06:10 -08:00 committed by GitHub
commit 675d8aa24a
3 changed files with 6 additions and 16 deletions
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7
rdt-discovery/l2-allocation-discovery.c
View file

@ -3,23 +3,20 @@
#include "machine.h" #include "machine.h"
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
int ret, det=1;
struct cpuid_out res; struct cpuid_out res;
// Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c // Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c
lcpuid(0x7, 0x0, &res); lcpuid(0x7, 0x0, &res);
if (!(res.ebx & (1 << 15))) { if (!(res.ebx & (1 << 15))) {
det = 0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
else { else {
lcpuid(0x10, 0x0, &res); lcpuid(0x10, 0x0, &res);
if (!(res.ebx & (1 << 2))) { if (!(res.ebx & (1 << 2))) {
det = 0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
} }
if (det) // If we are here, then L2 cache allocation capability is available.
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }

8
rdt-discovery/l3-allocation-discovery.c
View file

@ -3,26 +3,22 @@
#include "machine.h" #include "machine.h"
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
int ret, det=1;
struct cpuid_out res; struct cpuid_out res;
// Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c // Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c
// TODO(balajismaniam): Implement L3 CAT detection using brand string and MSR probing if // TODO(balajismaniam): Implement L3 CAT detection using brand string and MSR probing if
// not detected using cpuid // not detected using cpuid
lcpuid(0x7, 0x0, &res); lcpuid(0x7, 0x0, &res);
if (!(res.ebx & (1 << 15))) { if (!(res.ebx & (1 << 15))) {
det = 0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
else { else {
lcpuid(0x10, 0x0, &res); lcpuid(0x10, 0x0, &res);
if (!(res.ebx & (1 << 1))) { if (!(res.ebx & (1 << 1))) {
det = 0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
} }
if (det) // If we are here, then L3 cache allocation capability is available.
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }

7
rdt-discovery/monitoring-discovery.c
View file

@ -3,23 +3,20 @@
#include "machine.h" #include "machine.h"
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
int ret, det=1;
struct cpuid_out res; struct cpuid_out res;
// Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c // Logic below from https://github.com/01org/intel-cmt-cat/blob/master/lib/host_cap.c
lcpuid(0x7, 0x0, &res); lcpuid(0x7, 0x0, &res);
if (!(res.ebx & (1 << 12))) { if (!(res.ebx & (1 << 12))) {
det = 0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
else { else {
lcpuid(0xf, 0x0, &res); lcpuid(0xf, 0x0, &res);
if (!(res.edx & (1 << 1))) { if (!(res.edx & (1 << 1))) {
det=0;
return EXIT_FAILURE; return EXIT_FAILURE;
} }
} }
if (det) // If we are here, then cache monitoring capability is available.
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }