Hi Michael, I've written a man page for the s390_runtime_instr syscall which was merged with 3.7 (e4b8b3f). Now the question is if you would like to include it in the man-pages although it is completely s390 specific and wont be available on any other arch? Or should it go into a different package?
thanks, Jan -- --- /dev/null 2012-12-04 10:52:46.657720288 +0100 +++ s390_runtime_instr.2 2012-10-09 13:55:39.000000000 +0200 @@ -0,0 +1,73 @@ +.\" Copyright IBM Corp. 2012 +.\" Author: Jan Glauber <j...@linux.vnet.ibm.com> +.\" +.TH S390_RUNTIME_INSTR 2 2012-10-09 "Linux Programmer's Manual" +.SH NAME +s390_runtime_instr \- enable/disable s390 CPU runtime instrumentation +.SH SYNOPSIS +.nf +.B #include <asm/runtime_instr.h> + +.BI "int s390_runtime_instr(int " command ", int " signum "); +.fi + +.SH DESCRIPTION +The +.BR s390_runtime_instr () +system call starts or stops CPU runtime instrumentation for the current thread. + +The +.IR command +argument controls whether runtime instumentation is started +( 1 ) or stopped ( 2 ) for the current thread. + +The +.IR signum +argument specifies the number of a real-time signal. The +real-time signal is sent to the thread if the runtime instrumentation +buffer is full or if the runtime-instrumentation-halted interrupt +occured. + +.SH RETURN VALUE +On success +.BR s390_runtime_instr () +returns 0 and enables the thread for +runtime instrumentation by assigning the thread a default runtime +instrumentation control block. The caller can then read and modify the +control block and start the runtime instrumentation. On error, -1 is +returned and +.IR errno +is set to one of the error codes listed below. + +.SH ERRORS +.TP +.B EOPNOTSUPP +The runtime instrumentation facility is not available. +.TP +.B EINVAL +The value specified in +.IR command +is not a valid command or the value specified in +.IR signum +is not a real-time signal number. +.TP +.B ENOMEM +Allocating memory for the runtime instrumentation control block +failed. + +.SH VERSIONS +This system call is available since Linux 3.7. + +.SH CONFORMING TO +This system call +is only available on the s390 architecture. The runtime instrumentation facility is available +beginning with System z EC12. + +.SH NOTES +Glibc does not provide a wrapper for this system call, use +.BR syscall (2) +to call it. + +.SH SEE ALSO +.BR signal (7), +.BR syscall (2) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
