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tracepoint: Use __used attribute definitions from compiler_attributes.h 

Just a small cleanup while I was touching this header.
compiler_attributes.h does feature detection of these __attributes__(())
and provides more concise ways to invoke them.

Link: https://lkml.kernel.org/r/20200730224555.2142154-3-ndesaulniers@google.com

Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Nick Desaulniers 2020-07-30 15:45:55 -07:00 committed by Steven Rostedt (VMware)
parent f3751ad011
commit 1c39d761ff
1 changed files with 5 additions and 6 deletions
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11
include/linux/tracepoint.h
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@ -116,8 +116,7 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
#define __TRACEPOINT_ENTRY(name) \
static tracepoint_ptr_t __tracepoint_ptr_##name __used \
__attribute__((section("__tracepoints_ptrs"))) = \
&__tracepoint_##name
__section(__tracepoints_ptrs) = &__tracepoint_##name
#endif
#endif /* _LINUX_TRACEPOINT_H */
@ -280,9 +279,9 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
*/
#define DEFINE_TRACE_FN(name, reg, unreg) \
static const char __tpstrtab_##name[] \
__attribute__((section("__tracepoints_strings"))) = #name; \
struct tracepoint __tracepoint_##name \
__attribute__((section("__tracepoints"), used)) = \
__section(__tracepoints_strings) = #name; \
struct tracepoint __tracepoint_##name __used \
__section(__tracepoints) = \
{ __tpstrtab_##name, STATIC_KEY_INIT_FALSE, reg, unreg, NULL };\
__TRACEPOINT_ENTRY(name);
@ -361,7 +360,7 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
static const char *___tp_str __tracepoint_string = str; \
___tp_str; \
})
#define __tracepoint_string __attribute__((section("__tracepoint_str"), used))
#define __tracepoint_string __used __section(__tracepoint_str)
#else
/*
* tracepoint_string() is used to save the string address for userspace