#include #include #include #include #include #include #include #include #include #include void usage(char *name) { printf ("Usage: %s cpunum\n", name); } int main(int argc, char **argv) { int i, cpu, fd; char msr_file_name[64]; long long tsc, old_tsc, new_tsc; long long aperf, old_aperf, new_aperf; long long mperf, old_mperf, new_mperf; struct timeb before, after; long long int start, finish, total; cpu_set_t cpuset; if (argc != 2) { usage(argv[0]); return 1; } errno = 0; cpu = strtol(argv[1], (char **) NULL, 10); if (errno) { usage(argv[0]); return 1; } sprintf(msr_file_name, "/dev/cpu/%d/msr", cpu); fd = open(msr_file_name, O_RDONLY); if (fd == -1) { perror("Failed to open"); return 1; } CPU_ZERO(&cpuset); CPU_SET(cpu, &cpuset); if (sched_setaffinity(0, sizeof(cpu_set_t), &cpuset)) { perror("Failed to set cpu affinity"); return 1; } ftime(&before); pread(fd, &old_tsc, sizeof(old_tsc), 0x10); pread(fd, &old_aperf, sizeof(old_mperf), 0xe7); pread(fd, &old_mperf, sizeof(old_aperf), 0xe8); for (i=0; i<0x8fffffff; i++) { sqrt(i); } ftime(&after); pread(fd, &new_tsc, sizeof(new_tsc), 0x10); pread(fd, &new_aperf, sizeof(new_mperf), 0xe7); pread(fd, &new_mperf, sizeof(new_aperf), 0xe8); tsc = new_tsc-old_tsc; aperf = new_aperf-old_aperf; mperf = new_mperf-old_mperf; start = before.time*1000 + before.millitm; finish = after.time*1000 + after.millitm; total = finish - start; printf("runTime: %4.2f\n", 1.0*total/1000); printf("freq: %7.0f\n", tsc / (1.0*aperf / (1.0 * mperf)) / total); return 0; } e&id=970d14e3989160ee9e97c7d75ecbc893fd29dab9'>refslogtreecommitdiff
path: root/drivers/usb/c67x00/c67x00-ll-hpi.c
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authorBhumika Goyal <bhumirks@gmail.com>2017-01-25 00:54:07 +0530
committerDan Williams <dan.j.williams@intel.com>2017-01-31 18:16:30 -0800
commit970d14e3989160ee9e97c7d75ecbc893fd29dab9 (patch)
tree4a731cac4efedb17f86a912ec56c151d26792abe /drivers/usb/c67x00/c67x00-ll-hpi.c
parent7a308bb3016f57e5be11a677d15b821536419d36 (diff)
nvdimm: constify device_type structures
Declare device_type structure as const as it is only stored in the type field of a device structure. This field is of type const, so add const to declaration of device_type structure. File size before: text data bss dec hex filename 19278 3199 16 22493 57dd nvdimm/namespace_devs.o File size after: text data bss dec hex filename 19929 3160 16 23105 5a41 nvdimm/namespace_devs.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/usb/c67x00/c67x00-ll-hpi.c')