On Sun, Jan 14, 2018 at 07:56:22PM +0100, Eugene Syromyatnikov wrote: > For some reason, runtime_instr.h is inside arch/s390/include/asm/ and > not arch/s390/include/uapi/asm/, so it's not readily available to the > user space programs. Let's reflect it. > > * man2/s390_runtime_instr.2 (.SH SYNOPSYS): Comment out the #include > <asm/runtime_instr.h> statement. > (.SH NOTES): Note the existence and presence of runtime_instr.h header > inside the Linux kernel source tree. > --- > man2/s390_runtime_instr.2 | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) > > diff --git a/man2/s390_runtime_instr.2 b/man2/s390_runtime_instr.2 > index 18c2c07..f979692 100644 > --- a/man2/s390_runtime_instr.2 > +++ b/man2/s390_runtime_instr.2 > @@ -27,8 +27,9 @@ > s390_runtime_instr \- enable/disable s390 CPU run-time instrumentation > .SH SYNOPSIS > .nf > -.B #include <asm/runtime_instr.h> > -.PP > +.\" This header never had been a part of uapi as of 4.15 > +.\" .B #include <asm/runtime_instr.h> > +.\" .PP > .BI "int s390_runtime_instr(int " command ", int " signum "); > .fi > .SH DESCRIPTION > @@ -85,6 +86,12 @@ The run-time instrumentation facility is available beginning with System z EC12. > Glibc does not provide a wrapper for this system call, use > .BR syscall (2) > to call it. > +.PP > +Kernel's header > +.B arch/s390/include/asm/runtime_instr.h > +contains the necessary declarations for using run-time instrumentation. > +Unfortunately, it hasn't been included as a part of Linux's UAPI > +as of Linux 4.15. IMHO we shouldn't document the file name of a kernel header that is not exported. It's name and location can change anytime. I will move the kernel header file to the uapi directory where it should have been since a long time. Thanks for reporting! -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
