39 	i = finish.tv_sec - start.tv_sec;  in timing()
41 	i += finish.tv_nsec - start.tv_nsec;  in timing()
43 	ksft_print_msg("%lu.%09lu - %lu.%09lu = %llu (%.1fs)\n",  in timing()
71 		i = finish.tv_sec - start.tv_sec;  in calibrate()
73 		i += finish.tv_nsec - start.tv_nsec;  in calibrate()
140 /* Pin to a single CPU so the benchmark won't bounce around the system. */
143 	long cpu;  in affinity()  local
150 	 * choose the highest CPU instead of the lowest.  in affinity()
152 	for (cpu = ncores - 1; cpu >= 0; cpu--) {  in affinity()
154 		CPU_SET_S(cpu, setsz, setp);  in affinity()
155 		if (sched_setaffinity(getpid(), setsz, setp) == -1)  in affinity()
157 		printf("Pinned to CPU %lu of %lu\n", cpu + 1, ncores);  in affinity()
160 	fprintf(stderr, "Could not set CPU affinity -- calibration may not work well");  in affinity()
198 	system("uname -a");  in main()
203 	system("grep -H . /proc/sys/net/core/bpf_jit_enable");  in main()
205 	system("grep -H . /proc/sys/net/core/bpf_jit_harden");  in main()
218 	ksft_print_msg("getpid native: %llu ns\n", native);  in main()
228 	ksft_print_msg("getpid RET_ALLOW 1 filter (bitmap): %llu ns\n", bitmap1);  in main()
235 	ksft_print_msg("getpid RET_ALLOW 2 filters (bitmap): %llu ns\n", bitmap2);  in main()
242 	ksft_print_msg("getpid RET_ALLOW 3 filters (full): %llu ns\n", filter1);  in main()
249 	ksft_print_msg("getpid RET_ALLOW 4 filters (full): %llu ns\n", filter2);  in main()
254 		ksft_print_msg("Estimated " fmt ": %llu ns\n", var);	\  in main()
262 		 bitmap1 - native);  in main()
264 		 bitmap2 - native);  in main()
266 		 filter1 - native);  in main()
268 		 filter2 - native);  in main()
270 		 bitmap1 - native - (bitmap2 - bitmap1));  in main()
271 	ESTIMATE("seccomp per-filter overhead (last 2 diff)", per_filter1,  in main()
272 		 filter2 - filter1);  in main()
273 	ESTIMATE("seccomp per-filter overhead (filters / 4)", per_filter2,  in main()
274 		 (filter2 - native - entry) / 4);  in main()
284 	ret |= compare("per-filter (last 2 diff)", "≈", "per-filter (filters / 4)",  in main()
288 		       bitmap1 - native, approx, bitmap2 - native, skip);  in main()
295 		       bitmap1 - native, skip);  in main()
297 		       bitmap2 - native, skip);  in main()