102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectchar netcpu_kstat_id[]="\ 202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project@(#)netcpu_kstat.c Version 2.4.0"; 302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#if HAVE_CONFIG_H 502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <config.h> 602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#include <stdio.h> 902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 1002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#if HAVE_INTTYPES_H 1102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <inttypes.h> 1202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#else 1302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# if HAVE_STDINT_H 1402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <stdint.h> 1502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# endif 1602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 1702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 1802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#if HAVE_UNISTD_H 1902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <unistd.h> 2002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 2102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#if HAVE_STRINGS_H 2202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <strings.h> 2302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 2402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#if STDC_HEADERS 2502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <stdlib.h> 2602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <stddef.h> 2702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#else 2802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# if HAVE_STDLIB_H 2902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# include <stdlib.h> 3002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project# endif 3102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 3202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 3302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#include <kstat.h> 3402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#include <sys/sysinfo.h> 3502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 3602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#include "netsh.h" 3702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#include "netlib.h" 3802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 3902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project/* the lib_start_count and lib_end_count arrays hold the starting 4002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project and ending values of whatever is counting when the system is 4102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project idle. The rate at which this increments during a test is compared 4202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project with a previous calibrarion to arrive at a CPU utilization 4302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project percentage. raj 2005-01-26 */ 4402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic uint64_t lib_start_count[MAXCPUS]; 4502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic uint64_t lib_end_count[MAXCPUS]; 4602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 4702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic kstat_t *cpu_ks[MAXCPUS]; /* the addresses that kstat will 4802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project need to pull the cpu info from 4902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project the kstat interface. at least I 5002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project think that is what this is :) raj 5102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 8/2000 */ 5202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 5302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#define UPDKCID(nk,ok) \ 5402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectif (nk == -1) { \ 5502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project perror("kstat_read "); \ 5602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); \ 5702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} \ 5802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectif (nk != ok)\ 5902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project goto kcid_changed; 6002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 6102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic kstat_ctl_t *kc = NULL; 6202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic kid_t kcid = 0; 6302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 6402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project/* do the initial open of the kstat interface, get the chain id's all 6502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project straightened-out and set-up the addresses for get_kstat_idle to do 6602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project its thing. liberally borrowed from the sources to TOP. raj 8/2000 */ 6702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 6802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic int 6902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectopen_kstat() 7002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 7102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kstat_t *ks; 7202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kid_t nkcid; 7302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int i; 7402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int changed = 0; 7502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project static int ncpu = 0; 7602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 7702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kstat_named_t *kn; 7802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 7902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 8002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"open_kstat: enter\n"); 8102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 8202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 8302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 8402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* 8502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project * 0. kstat_open 8602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project */ 8702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 8802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (!kc) 8902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 9002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kc = kstat_open(); 9102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (!kc) 9202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 9302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project perror("kstat_open "); 9402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 9502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 9602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project changed = 1; 9702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kcid = kc->kc_chain_id; 9802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 9902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#ifdef rickwasstupid 10002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project else { 10102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"open_kstat double open!\n"); 10202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 10302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 10402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 10502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project#endif 10602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 10702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* keep doing it until no more changes */ 10802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kcid_changed: 10902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 11002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 11102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"passing kcid_changed\n"); 11202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 11302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 11402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 11502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* 11602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project * 1. kstat_chain_update 11702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project */ 11802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project nkcid = kstat_chain_update(kc); 11902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (nkcid) 12002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 12102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* UPDKCID will abort if nkcid is -1, so no need to check */ 12202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project changed = 1; 12302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kcid = nkcid; 12402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 12502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project UPDKCID(nkcid,0); 12602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 12702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 12802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"kstat_lookup for unix/system_misc\n"); 12902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 13002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 13102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 13202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ks = kstat_lookup(kc, "unix", 0, "system_misc"); 13302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (kstat_read(kc, ks, 0) == -1) { 13402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project perror("kstat_read"); 13502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 13602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 13702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 13802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 13902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (changed) { 14002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 14102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* 14202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project * 2. get data addresses 14302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project */ 14402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 14502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ncpu = 0; 14602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 14702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kn = kstat_data_lookup(ks, "ncpus"); 14802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (kn && kn->value.ui32 > lib_num_loc_cpus) { 14902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(stderr,"number of CPU's mismatch!"); 15002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 15102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 15202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 15302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for (ks = kc->kc_chain; ks; 15402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ks = ks->ks_next) 15502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 15602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (strncmp(ks->ks_name, "cpu_stat", 8) == 0) 15702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 15802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project nkcid = kstat_read(kc, ks, NULL); 15902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* if kcid changed, pointer might be invalid. we'll deal 16002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project wtih changes at this stage, but will not accept them 16102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project when we are actually in the middle of reading 16202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project values. hopefully this is not going to be a big 16302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project issue. raj 8/2000 */ 16402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project UPDKCID(nkcid, kcid); 16502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 16602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 16702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"cpu_ks[%d] getting %p\n",ncpu,ks); 16802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 16902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 17002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 17102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project cpu_ks[ncpu] = ks; 17202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ncpu++; 17302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (ncpu > lib_num_loc_cpus) 17402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 17502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* with the check above, would we ever hit this? */ 17602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(stderr, 17702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project "kstat finds too many cpus %d: should be %d\n", 17802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ncpu,lib_num_loc_cpus); 17902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 18002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 18102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 18202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 18302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* note that ncpu could be less than ncpus, but that's okay */ 18402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project changed = 0; 18502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 18602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 18702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 18802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project/* return the value of the idle tick counter for the specified CPU */ 18902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectstatic long 19002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectget_kstat_idle(cpu) 19102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int cpu; 19202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 19302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project cpu_stat_t cpu_stat; 19402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kid_t nkcid; 19502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 19602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 19702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where, 19802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project "get_kstat_idle reading with kc %x and ks %p\n", 19902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kc, 20002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project cpu_ks[cpu]); 20102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 20202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 20302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project nkcid = kstat_read(kc, cpu_ks[cpu], &cpu_stat); 20402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* if kcid changed, pointer might be invalid, fail the test */ 20502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project UPDKCID(nkcid, kcid); 20602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 20702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return(cpu_stat.cpu_sysinfo.cpu[CPU_IDLE]); 20802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 20902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project kcid_changed: 21002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project perror("kcid changed midstream and I cannot deal with that!"); 21102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project exit(1); 21202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 21302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 21402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectvoid 21502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcpu_util_init(void) 21602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 21702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project open_kstat(); 21802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return; 21902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 22002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 22102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectvoid 22202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcpu_util_terminate(void) 22302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 22402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return; 22502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 22602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 22702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectint 22802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectget_cpu_method(void) 22902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 23002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return KSTAT; 23102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 23202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 23302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectvoid 23402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectget_cpu_idle(uint64_t *res) 23502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 23602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 23702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int i; 23802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 23902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* this open may be redundant */ 24002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project open_kstat(); 24102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 24202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for (i = 0; i < lib_num_loc_cpus; i++){ 24302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project res[i] = get_kstat_idle(i); 24402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 24502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return; 24602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 24702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 24802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectfloat 24902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcalibrate_idle_rate(int iterations, int interval) 25002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 25102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 25202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project long 25302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project firstcnt[MAXCPUS], 25402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project secondcnt[MAXCPUS]; 25502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 25602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project float 25702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project elapsed, 25802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project temp_rate, 25902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project rate[MAXTIMES], 26002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project local_maxrate; 26102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 26202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project long 26302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project sec, 26402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project usec; 26502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 26602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int 26702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project i, 26802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project j; 26902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 27002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project struct timeval time1, time2 ; 27102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project struct timezone tz; 27202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 27302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 27402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"calling open_kstat from calibrate_kstat\n"); 27502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 27602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 27702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 27802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project open_kstat(); 27902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 28002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (iterations > MAXTIMES) { 28102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project iterations = MAXTIMES; 28202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 28302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 28402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project local_maxrate = (float)-1.0; 28502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 28602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for(i = 0; i < iterations; i++) { 28702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project rate[i] = (float)0.0; 28802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for (j = 0; j < lib_num_loc_cpus; j++) { 28902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project firstcnt[j] = get_kstat_idle(j); 29002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 29102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project gettimeofday (&time1, &tz); 29202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project sleep(interval); 29302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project gettimeofday (&time2, &tz); 29402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 29502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (time2.tv_usec < time1.tv_usec) 29602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project { 29702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project time2.tv_usec += 1000000; 29802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project time2.tv_sec -=1; 29902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 30002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project sec = time2.tv_sec - time1.tv_sec; 30102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project usec = time2.tv_usec - time1.tv_usec; 30202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project elapsed = (float)sec + ((float)usec/(float)1000000.0); 30302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 30402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if(debug) { 30502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where, "Calibration for kstat counter run: %d\n",i); 30602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"\tsec = %ld usec = %ld\n",sec,usec); 30702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"\telapsed time = %g\n",elapsed); 30802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 30902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 31002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for (j = 0; j < lib_num_loc_cpus; j++) { 31102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project secondcnt[j] = get_kstat_idle(j); 31202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if(debug) { 31302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* I know that there are situations where compilers know about */ 31402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* long long, but the library functions do not... raj 4/95 */ 31502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where, 31602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project "\tfirstcnt[%d] = 0x%8.8lx%8.8lx secondcnt[%d] = 0x%8.8lx%8.8lx\n", 31702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project j, 31802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project firstcnt[j], 31902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project firstcnt[j], 32002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project j, 32102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project secondcnt[j], 32202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project secondcnt[j]); 32302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 32402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* we assume that it would wrap no more than once. we also */ 32502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* assume that the result of subtracting will "fit" raj 4/95 */ 32602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project temp_rate = (secondcnt[j] >= firstcnt[j]) ? 32702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project (float)(secondcnt[j] - firstcnt[j])/elapsed : 32802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project (float)(secondcnt[j]-firstcnt[j]+MAXLONG)/elapsed; 32902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (temp_rate > rate[i]) rate[i] = temp_rate; 33002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if(debug) { 33102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"\trate[%d] = %g\n",i,rate[i]); 33202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 33302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 33402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (local_maxrate < rate[i]) local_maxrate = rate[i]; 33502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 33602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 33702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if(debug) { 33802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where,"\tlocal maxrate = %g per sec. \n",local_maxrate); 33902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fflush(where); 34002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 34102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return local_maxrate; 34202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 34302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 34402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectfloat 34502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcalc_cpu_util_internal(float elapsed_time) 34602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 34702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project int i; 34802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project float correction_factor; 34902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project float actual_rate; 35002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 35102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_cpu_util = (float)0.0; 35202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* It is possible that the library measured a time other than */ 35302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* the one that the user want for the cpu utilization */ 35402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* calculations - for example, tests that were ended by */ 35502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* watchdog timers such as the udp stream test. We let these */ 35602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* tests tell up what the elapsed time should be. */ 35702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 35802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (elapsed_time != 0.0) { 35902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project correction_factor = (float) 1.0 + 36002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project ((lib_elapsed - elapsed_time) / elapsed_time); 36102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 36202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project else { 36302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project correction_factor = (float) 1.0; 36402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 36502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 36602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project for (i = 0; i < lib_num_loc_cpus; i++) { 36702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 36802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* it would appear that on some systems, in loopback, nice is 36902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project *very* effective, causing the looper process to stop dead in its 37002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project tracks. if this happens, we need to ensure that the calculation 37102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project does not go south. raj 6/95 and if we run completely out of idle, 37202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project the same thing could in theory happen to the USE_KSTAT path. raj 37302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 8/2000 */ 37402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 37502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (lib_end_count[i] == lib_start_count[i]) { 37602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_end_count[i]++; 37702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 37802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 37902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project actual_rate = (lib_end_count[i] > lib_start_count[i]) ? 38002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project (float)(lib_end_count[i] - lib_start_count[i])/lib_elapsed : 38102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project (float)(lib_end_count[i] - lib_start_count[i] + 38202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project MAXLONG)/ lib_elapsed; 38302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project if (debug) { 38402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project fprintf(where, 38502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project "calc_cpu_util: actual_rate on processor %d is %f start %lx end %lx\n", 38602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project i, 38702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project actual_rate, 38802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_start_count[i], 38902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_end_count[i]); 39002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 39102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_per_cpu_util[i] = (lib_local_maxrate - actual_rate) / 39202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_maxrate * 100; 39302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_cpu_util += lib_local_per_cpu_util[i]; 39402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project } 39502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project /* we want the average across all n processors */ 39602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_cpu_util /= (float)lib_num_loc_cpus; 39702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 39802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project lib_local_cpu_util *= correction_factor; 39902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return lib_local_cpu_util; 40002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 40102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 40202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 40302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 40402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectvoid 40502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcpu_start_internal(void) 40602fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 40702fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project get_cpu_idle(lib_start_count); 40802fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project return; 40902fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 41002fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project 41102fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectvoid 41202fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Projectcpu_stop_internal(void) 41302fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project{ 41402fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project get_cpu_idle(lib_end_count); 41502fb0aca1189a2c1fd20806c588e9ee80d9755f8The Android Open Source Project} 416