Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[firefly-linux-kernel-4.4.55.git] / kernel / trace / trace.h

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 6b69c4bd306f72cbbce93b9fe94827a8696c0fba..229f8591f61db792780fb7579a1061458a663b4c 100644 (file)
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -784,4 +784,19 @@ extern const char *__stop___trace_bprintk_fmt[];
        FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
 #include "trace_entries.h"
 
+/* Only current can touch trace_recursion */
+#define trace_recursion_inc() do { (current)->trace_recursion++; } while (0)
+#define trace_recursion_dec() do { (current)->trace_recursion--; } while (0)
+
+/* Ring buffer has the 10 LSB bits to count */
+#define trace_recursion_buffer() ((current)->trace_recursion & 0x3ff)
+
+/* for function tracing recursion */
+#define TRACE_INTERNAL_BIT             (1<<11)
+#define TRACE_GLOBAL_BIT               (1<<12)
+
+#define trace_recursion_set(bit)       do { (current)->trace_recursion |= (bit); } while (0)
+#define trace_recursion_clear(bit)     do { (current)->trace_recursion &= ~(bit); } while (0)
+#define trace_recursion_test(bit)      ((current)->trace_recursion & (bit))
+
 #endif /* _LINUX_KERNEL_TRACE_H */