diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2025-10-21 20:43:41 -0400 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-10-24 16:43:14 -0400 |
| commit | faf938153cad98d97f60ac835ead1db74961507e (patch) | |
| tree | 359a855141a3413f9d33af1397ea83624f2e9e1e /include | |
| parent | e30f8e61e2518a837837daa26cda3c8cc30f3226 (diff) | |
tracepoint: Do not warn for unused event that is exported
There are a few generic events that may only be used by modules. They are
defined and then set with EXPORT_TRACEPOINT*(). Mark events that are
exported as being used, even though they still waste memory in the kernel
proper.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas.schier@linux.dev>
Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/20251022004453.089254920@kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tracepoint.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 1e53d3626c78..8a56f3278b1b 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -227,8 +227,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) * defined tracepoints are used. It is discarded after the build. */ # define TRACEPOINT_CHECK(name) \ - static const char __used __section("__tracepoint_check") __trace_check[] = \ - #name; + static const char __used __section("__tracepoint_check") \ + __trace_check_##name[] = #name; /* * Make sure the alignment of the structure in the __tracepoints section will @@ -382,10 +382,12 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) __DEFINE_TRACE_EXT(_name, NULL, PARAMS(_proto), PARAMS(_args)); #define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \ + TRACEPOINT_CHECK(name) \ EXPORT_SYMBOL_GPL(__tracepoint_##name); \ EXPORT_SYMBOL_GPL(__traceiter_##name); \ EXPORT_STATIC_CALL_GPL(tp_func_##name) #define EXPORT_TRACEPOINT_SYMBOL(name) \ + TRACEPOINT_CHECK(name) \ EXPORT_SYMBOL(__tracepoint_##name); \ EXPORT_SYMBOL(__traceiter_##name); \ EXPORT_STATIC_CALL(tp_func_##name) |