[PATCH v4 1/2] tracing: Fix a compilation error without CONFIG_MODULES
From: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Date: 2025-03-13 16:26:54
Also in:
lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
There are some code which depends on CONFIG_MODULES. #ifdef
to enclose it.
Fixes: dca91c1c5468 ("tracing: Have persistent trace instances save module addresses")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
kernel/trace/trace.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c3c79908766e..c70b2e709987 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c@@ -6001,6 +6001,7 @@ struct trace_scratch { static DEFINE_MUTEX(scratch_mutex); +#ifdef CONFIG_MODULES static int save_mod(struct module *mod, void *data) { struct trace_array *tr = data;
@@ -6025,6 +6026,7 @@ static int save_mod(struct module *mod, void *data) return 0; } +#endif static void update_last_data(struct trace_array *tr) {
@@ -6040,9 +6042,10 @@ static void update_last_data(struct trace_array *tr) memset(tscratch->entries, 0, flex_array_size(tscratch, entries, tscratch->nr_entries)); tscratch->nr_entries = 0; - +#ifdef CONFIG_MODULES guard(mutex)(&scratch_mutex); module_for_each_mod(save_mod, tr); +#endif } if (!(tr->flags & TRACE_ARRAY_FL_LAST_BOOT))