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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2019-03-07 16:27:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-07 18:32:00 -0800
commit513770f54edba8b19c2175a151e02f1dfc911d87 (patch)
tree5eecc585065859b4a42006c16fe45068f6b872ac
parentf008043bd3b5ca7f2c65dbdad8ea6df0a6f134f3 (diff)
downloadlinux-513770f54edba8b19c2175a151e02f1dfc911d87.tar.bz2
dynamic_debug: move pr_err from module.c to ddebug_add_module
This serves two purposes: First, we get a diagnostic if (though extremely unlikely), any of the calls of ddebug_add_module for built-in code fails, effectively disabling dynamic_debug. Second, I want to make struct _ddebug opaque, and avoid accessing any of its members outside dynamic_debug.[ch]. Link: http://lkml.kernel.org/r/20190212214150.4807-9-linux@rasmusvillemoes.dk Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Jason Baron <jbaron@akamai.com> Cc: David Sterba <dsterba@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/module.c4
-rw-r--r--lib/dynamic_debug.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 2ad1b5239910..7b1d437c1ea6 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2720,9 +2720,7 @@ static void dynamic_debug_setup(struct module *mod, struct _ddebug *debug, unsig
if (!debug)
return;
#ifdef CONFIG_DYNAMIC_DEBUG
- if (ddebug_add_module(debug, num, mod->name))
- pr_err("dynamic debug error adding module: %s\n",
- debug->modname);
+ ddebug_add_module(debug, num, mod->name);
#endif
}
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 7b76f43edaef..7bdf98c37e91 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -849,8 +849,10 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
struct ddebug_table *dt;
dt = kzalloc(sizeof(*dt), GFP_KERNEL);
- if (dt == NULL)
+ if (dt == NULL) {
+ pr_err("error adding module: %s\n", name);
return -ENOMEM;
+ }
/*
* For built-in modules, name lives in .rodata and is
* immortal. For loaded modules, name points at the name[]