At present, most architectures can support TRACEPOINTS, but about 10/29
architectures support HAVE_SYSCALL_TRACEPOINTS.
TIF_SYSCALL_TRACEPOINT depends on HAVE_SYSCALL_TRACEPOINTS, not all
architectures which support TRACEPOINTS also must support
TIF_SYSCALL_TRACEPOINT.
So at present, need use HAVE_SYSCALL_TRACEPOINTS instead of TRACEPOINTS,
or can not pass compiling. The related error (allmodconfig under score):
CC init/main.o
In file included from include/asm-generic/preempt.h:4:0,
from arch/score/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:18,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from init/main.c:15:
include/trace/syscall.h: In function 'syscall_tracepoint_update':
include/trace/syscall.h:39:23: error: 'TIF_SYSCALL_TRACEPOINT' undeclared
(first use in this function)
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
^
include/linux/thread_info.h:103:45: note: in definition of macro
'test_thread_flag'
test_ti_thread_flag(current_thread_info(), flag)
^
include/trace/syscall.h:39:23: note: each undeclared identifier is reported
only once for each function it appears in
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
^
include/linux/thread_info.h:103:45: note: in definition of macro
'test_thread_flag'
test_ti_thread_flag(current_thread_info(), flag)
^
make[1]: *** [init/main.o] Error 1
make: *** [init] Error 2
Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
---
include/trace/syscall.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/trace/syscall.h b/include/trace/syscall.h
index 291c282..a709cbd 100644
--- a/include/trace/syscall.h
+++ b/include/trace/syscall.h
@@ -33,7 +33,7 @@ struct syscall_metadata {
struct ftrace_event_call *exit_event;
};
-#ifdef CONFIG_TRACEPOINTS
+#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
static inline void syscall_tracepoint_update(struct task_struct *p)
{
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
--
1.9.2.459.g68773ac
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