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From: Jiri Olsa <jolsa@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
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	linux-api@vger.kernel.org,
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	Thomas Gleixner <tglx@linutronix.de>,
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	Ingo Molnar <mingo@redhat.com>,
	Andy Lutomirski <luto@kernel.org>,
	"Edgecombe, Rick P" <rick.p.edgecombe@intel.com>,
	Deepak Gupta <debug@rivosinc.com>
Subject: [PATCHv6 9/9] man2: Add uretprobe syscall page
Date: Tue, 21 May 2024 12:48:25 +0200
Message-ID: <20240521104825.1060966-10-jolsa@kernel.org>
In-Reply-To: <20240521104825.1060966-1-jolsa@kernel.org>
References: <20240521104825.1060966-1-jolsa@kernel.org>
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Adding man page for new uretprobe syscall.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 man2/uretprobe.2 | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 man2/uretprobe.2

diff --git a/man2/uretprobe.2 b/man2/uretprobe.2
new file mode 100644
index 000000000000..690fe3b1a44f
--- /dev/null
+++ b/man2/uretprobe.2
@@ -0,0 +1,50 @@
+.\" Copyright (C) 2024, Jiri Olsa <jolsa@kernel.org>
+.\"
+.\" 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 ()
+syscall is an alternative to breakpoint instructions for
+triggering return uprobe consumers.
+.P
+Calls to
+.BR uretprobe ()
+suscall 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 ()
+syscall return value is architecture-specific.
+
+.SH VERSIONS
+This syscall is not specified in POSIX,
+and details of its behavior vary across systems.
+.SH STANDARDS
+None.
+.SH HISTORY
+TBD
+.SH NOTES
+The
+.BR uretprobe ()
+syscall 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 ()
+syscall 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.
-- 
2.44.0