s390_runtime_instr — enable/disable s390 CPU run-time instrumentation
system call starts or stops CPU run-time instrumentation for
the calling thread.
argument controls whether run-time instrumentation is started
or stopped (
S390_RUNTIME_INSTR_STOP, 2) for the calling
argument specifies the number of a real-time signal. The
real-time signal is sent to the thread if the run-time
instrumentation buffer is full or if the
run-time-instrumentation-halted interrupt occurred.
s390_runtime_instr() returns 0 and enables
the thread for run-time instrumentation by assigning the
thread a default run-time instrumentation control block. The
caller can then read and modify the control block and start
the run-time instrumentation. On error, −1 is returned
errno is set to one of the
error codes listed below.
The value specified in
command is not a valid
command or the value specified in
signum is not a real-time
Allocating memory for the run-time instrumentation control block failed.
The run-time instrumentation facility is not available.
This Linux-specific system call is available only on the s390 architecture. The run-time instrumentation facility is available beginning with System z EC12.
Glibc does not provide a wrapper for this system call, use syscall(2) to call it.
This page is part of release 4.07 of the Linux
man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
Copyright (c) IBM Corp. 2012
Author: Jan Glauber <janglinux.vnet.ibm.com>
This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The GNU General Public License's references to "object code"
and "executables" are to be interpreted as the output of any
document formatting or typesetting system, including
intermediate and printed output.
This manual is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this manual; if not, see