linux-kernel - Re: [PATCH v2 3/3] tracing/kprobes: Use APIs that matches symbols without .XXX suffix

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Message-Id: <87F7024C-9049-4573-829B-79261FC87984@gmail.com>
Date: Wed, 7 Aug 2024 22:58:45 +0800
From: zhang warden <zhangwarden@...il.com>
To: Song Liu <songliubraving@...a.com>
Cc: Steven Rostedt <rostedt@...dmis.org>,
 Song Liu <song@...nel.org>,
 "live-patching@...r.kernel.org" <live-patching@...r.kernel.org>,
 LKML <linux-kernel@...r.kernel.org>,
 "linux-trace-kernel@...r.kernel.org" <linux-trace-kernel@...r.kernel.org>,
 Josh Poimboeuf <jpoimboe@...nel.org>,
 Jiri Kosina <jikos@...nel.org>,
 Miroslav Benes <mbenes@...e.cz>,
 Petr Mladek <pmladek@...e.com>,
 Joe Lawrence <joe.lawrence@...hat.com>,
 Nathan Chancellor <nathan@...nel.org>,
 "morbo@...gle.com" <morbo@...gle.com>,
 Justin Stitt <justinstitt@...gle.com>,
 Luis Chamberlain <mcgrof@...nel.org>,
 Leizhen <thunder.leizhen@...wei.com>,
 "kees@...nel.org" <kees@...nel.org>,
 Kernel Team <kernel-team@...a.com>,
 Matthew Maurer <mmaurer@...gle.com>,
 Sami Tolvanen <samitolvanen@...gle.com>,
 Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH v2 3/3] tracing/kprobes: Use APIs that matches symbols
 without .XXX suffix


> In my GCC built, we have suffixes like ".constprop.0", ".part.0", ".isra.0", 
> and ".isra.0.cold". 

A fresher's eye, I met sometime when try to build a livepatch module and found some mistake caused by ".constprop.0" ".part.0" which is generated by GCC.

These section with such suffixes is special and sometime the symbol st_value is quite different. What is these kind of section (or symbol) use for?

Regards
Wardenjohn