1*4882a593Smuzhiyunlibtraceevent(3) 2*4882a593Smuzhiyun================ 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunNAME 5*4882a593Smuzhiyun---- 6*4882a593Smuzhiyuntep_get_cpus, tep_set_cpus - Get / set the number of CPUs, which have a tracing 7*4882a593Smuzhiyunbuffer representing it. Note, the buffer may be empty. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunSYNOPSIS 10*4882a593Smuzhiyun-------- 11*4882a593Smuzhiyun[verse] 12*4882a593Smuzhiyun-- 13*4882a593Smuzhiyun*#include <event-parse.h>* 14*4882a593Smuzhiyun 15*4882a593Smuzhiyunint *tep_get_cpus*(struct tep_handle pass:[*]_tep_); 16*4882a593Smuzhiyunvoid *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_); 17*4882a593Smuzhiyun-- 18*4882a593Smuzhiyun 19*4882a593SmuzhiyunDESCRIPTION 20*4882a593Smuzhiyun----------- 21*4882a593SmuzhiyunThe _tep_get_cpus()_ function gets the number of CPUs, which have a tracing 22*4882a593Smuzhiyunbuffer representing it. The _tep_ argument is trace event parser context. 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunThe _tep_set_cpus()_ function sets the number of CPUs, which have a tracing 25*4882a593Smuzhiyunbuffer representing it. The _tep_ argument is trace event parser context. 26*4882a593SmuzhiyunThe _cpu_ argument is the number of CPUs with tracing data. 27*4882a593Smuzhiyun 28*4882a593SmuzhiyunRETURN VALUE 29*4882a593Smuzhiyun------------ 30*4882a593SmuzhiyunThe _tep_get_cpus()_ functions returns the number of CPUs, which have tracing 31*4882a593Smuzhiyundata recorded. 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunEXAMPLE 34*4882a593Smuzhiyun------- 35*4882a593Smuzhiyun[source,c] 36*4882a593Smuzhiyun-- 37*4882a593Smuzhiyun#include <event-parse.h> 38*4882a593Smuzhiyun... 39*4882a593Smuzhiyunstruct tep_handle *tep = tep_alloc(); 40*4882a593Smuzhiyun... 41*4882a593Smuzhiyun tep_set_cpus(tep, 5); 42*4882a593Smuzhiyun... 43*4882a593Smuzhiyun printf("We have tracing data for %d CPUs", tep_get_cpus(tep)); 44*4882a593Smuzhiyun-- 45*4882a593Smuzhiyun 46*4882a593SmuzhiyunFILES 47*4882a593Smuzhiyun----- 48*4882a593Smuzhiyun[verse] 49*4882a593Smuzhiyun-- 50*4882a593Smuzhiyun*event-parse.h* 51*4882a593Smuzhiyun Header file to include in order to have access to the library APIs. 52*4882a593Smuzhiyun*-ltraceevent* 53*4882a593Smuzhiyun Linker switch to add when building a program that uses the library. 54*4882a593Smuzhiyun-- 55*4882a593Smuzhiyun 56*4882a593SmuzhiyunSEE ALSO 57*4882a593Smuzhiyun-------- 58*4882a593Smuzhiyun_libtraceevent(3)_, _trace-cmd(1)_ 59*4882a593Smuzhiyun 60*4882a593SmuzhiyunAUTHOR 61*4882a593Smuzhiyun------ 62*4882a593Smuzhiyun[verse] 63*4882a593Smuzhiyun-- 64*4882a593Smuzhiyun*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*. 65*4882a593Smuzhiyun*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page. 66*4882a593Smuzhiyun-- 67*4882a593SmuzhiyunREPORTING BUGS 68*4882a593Smuzhiyun-------------- 69*4882a593SmuzhiyunReport bugs to <linux-trace-devel@vger.kernel.org> 70*4882a593Smuzhiyun 71*4882a593SmuzhiyunLICENSE 72*4882a593Smuzhiyun------- 73*4882a593Smuzhiyunlibtraceevent is Free Software licensed under the GNU LGPL 2.1 74*4882a593Smuzhiyun 75*4882a593SmuzhiyunRESOURCES 76*4882a593Smuzhiyun--------- 77*4882a593Smuzhiyunhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 78