On Wed, May 22, 2024 at 12:59:46PM +0200, Alejandro Colomar wrote: > Hi Jirka, > > On Wed, May 22, 2024 at 09:54:58AM GMT, Jiri Olsa wrote: > > ok, thanks > > > > jirka > > > > > > --- > > diff --git a/man/man2/uretprobe.2 b/man/man2/uretprobe.2 > > new file mode 100644 > > index 000000000000..5b5f340b59b6 > > --- /dev/null > > +++ b/man/man2/uretprobe.2 > > @@ -0,0 +1,56 @@ > > +.\" Copyright (C) 2024, Jiri Olsa <jolsa@xxxxxxxxxx> > > +.\" > > +.\" SPDX-License-Identifier: Linux-man-pages-copyleft > > +.\" > > +.TH uretprobe 2 (date) "Linux man-pages (unreleased)" > > +.SH NAME > > +uretprobe \- execute pending return uprobes > > +.SH SYNOPSIS > > +.nf > > +.B int uretprobe(void) > > +.fi > > +.SH DESCRIPTION > > +The > > +.BR uretprobe () > > +system call is an alternative to breakpoint instructions for triggering return > > +uprobe consumers. > > +.P > > +Calls to > > +.BR uretprobe () > > +system call are only made from the user-space trampoline provided by the kernel. > > +Calls from any other place result in a > > +.BR SIGILL . > > +.SH RETURN VALUE > > +The > > +.BR uretprobe () > > +system call return value is architecture-specific. > > +.SH ERRORS > > +.TP > > +.B SIGILL > > +The > > +.BR uretprobe () > > +system call was called by user. > > Maybe 'a user-space program'? > Anyway, LGTM. Thanks! > > Reviewed-by: Alejandro Colomar <alx@xxxxxxxxxx> ok, will change, thanks a lot jirka > > Have a lovely day! > Alex > > > +.SH VERSIONS > > +Details of the > > +.BR uretprobe () > > +system call behavior vary across systems. > > +.SH STANDARDS > > +None. > > +.SH HISTORY > > +TBD > > +.SH NOTES > > +The > > +.BR uretprobe () > > +system call was initially introduced for the x86_64 architecture > > +where it was shown to be faster than breakpoint traps. > > +It might be extended to other architectures. > > +.P > > +The > > +.BR uretprobe () > > +system call exists only to allow the invocation of return uprobe consumers. > > +It should > > +.B never > > +be called directly. > > +Details of the arguments (if any) passed to > > +.BR uretprobe () > > +and the return value are architecture-specific. > > -- > <https://www.alejandro-colomar.es/>
