tracing: Add support for SOFT_DISABLE to syscall events
authorTom Zanussi <tom.zanussi@linux.intel.com>
Thu, 24 Oct 2013 13:34:19 +0000 (08:34 -0500)
committerSteven Rostedt <rostedt@goodmis.org>
Tue, 5 Nov 2013 22:48:49 +0000 (17:48 -0500)
commitd562aff93bfb530b0992141500a402d17081189d
treeaf541e2539c575932a6b0c13d69792472c3d26fa
parent38de93abec8d8acd8d6dbbe9b0d92d6d5cdb3090
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>
include/linux/syscalls.h
kernel/trace/trace.h
kernel/trace/trace_syscalls.c