Hi, On Tue, Jun 11, 2024 at 11:30:22PM GMT, Masami Hiramatsu wrote: > On Tue, 11 Jun 2024 13:21:58 +0200 > Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > > > Adding man page for new uretprobe syscall. > > > > Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx> > > Reviewed-by: Alejandro Colomar <alx@xxxxxxxxxx> > > Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> > > This looks good to me. > > Reviewed-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> > > And this needs to be picked by linux-man@ project. Yup; please ping me when the rest is merged and I should pick it. Have a lovely day! Alex > > Thank you, > > > --- > > man/man2/uretprobe.2 | 56 ++++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 56 insertions(+) > > create mode 100644 man/man2/uretprobe.2 > > > > diff --git a/man/man2/uretprobe.2 b/man/man2/uretprobe.2 > > new file mode 100644 > > index 000000000000..cf1c2b0d852e > > --- /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 a user-space program. > > +.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. > > -- > > 2.45.1 > > > > > -- > Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> > -- <https://www.alejandro-colomar.es/>
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