tracing: Add support for SOFT_DISABLE to syscall events

The original SOFT_DISABLE patches didn't add support for soft disable
of syscall events; this adds it.

Add an array of ftrace_event_file pointers indexed by syscall number
to the trace array and remove the existing enabled bitmaps, which as a
result are now redundant.  The ftrace_event_file structs in turn
contain the soft disable flags we need for per-syscall soft disable
accounting.

Adding ftrace_event_files also means we can remove the USE_CALL_FILTER
bit, thus enabling multibuffer filter support for syscall events.

Link: http://lkml.kernel.org/r/6e72b566e85d8df8042f133efbc6c30e21fb017e.1382620672.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 10bafa97049d..2ef31bfd620b 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -120,7 +120,7 @@ extern struct trace_event_functions exit_syscall_print_funcs;
                 .class                  = &event_class_syscall_enter,   \
                 .event.funcs            = &enter_syscall_print_funcs,   \
                 .data                   = (void *)&__syscall_meta_##sname,\
-                .flags                  = TRACE_EVENT_FL_CAP_ANY | TRACE_EVENT_FL_USE_CALL_FILTER,\
+                .flags                  = TRACE_EVENT_FL_CAP_ANY,       \
         };                                                              \
         static struct ftrace_event_call __used                          \
           __attribute__((section("_ftrace_events")))                    \
@@ -134,7 +134,7 @@ extern struct trace_event_functions exit_syscall_print_funcs;
                 .class                  = &event_class_syscall_exit,    \
                 .event.funcs            = &exit_syscall_print_funcs,    \
                 .data                   = (void *)&__syscall_meta_##sname,\
-                .flags                  = TRACE_EVENT_FL_CAP_ANY | TRACE_EVENT_FL_USE_CALL_FILTER,\
+                .flags                  = TRACE_EVENT_FL_CAP_ANY,       \
         };                                                              \
         static struct ftrace_event_call __used                          \
           __attribute__((section("_ftrace_events")))                    \