atomic: use <linux/atomic.h>

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / trace / trace.h

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 229f8591f61db792780fb7579a1061458a663b4c..616846bcfee56ad87810b9688e5ab9a65cf50856 100644 (file)
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -2,7 +2,7 @@
 #define _LINUX_KERNEL_TRACE_H
 
 #include <linux/fs.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <linux/sched.h>
 #include <linux/clocksource.h>
 #include <linux/ring_buffer.h>
@@ -278,6 +278,29 @@ struct tracer {
 };
 
 
+/* 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)
+/*
+ * Abuse of the trace_recursion.
+ * As we need a way to maintain state if we are tracing the function
+ * graph in irq because we want to trace a particular function that
+ * was called in irq context but we have irq tracing off. Since this
+ * can only be modified by current, we can reuse trace_recursion.
+ */
+#define TRACE_IRQ_BIT                  (1<<13)
+
+#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))
+
 #define TRACE_PIPE_ALL_CPU     -1
 
 int tracer_init(struct tracer *t, struct trace_array *tr);
@@ -389,6 +412,9 @@ void update_max_tr_single(struct trace_array *tr,
 void ftrace_trace_stack(struct ring_buffer *buffer, unsigned long flags,
                        int skip, int pc);
 
+void ftrace_trace_stack_regs(struct ring_buffer *buffer, unsigned long flags,
+                            int skip, int pc, struct pt_regs *regs);
+
 void ftrace_trace_userstack(struct ring_buffer *buffer, unsigned long flags,
                            int pc);
 
@@ -400,6 +426,12 @@ static inline void ftrace_trace_stack(struct ring_buffer *buffer,
 {
 }
 
+static inline void ftrace_trace_stack_regs(struct ring_buffer *buffer,
+                                          unsigned long flags, int skip,
+                                          int pc, struct pt_regs *regs)
+{
+}
+
 static inline void ftrace_trace_userstack(struct ring_buffer *buffer,
                                          unsigned long flags, int pc)
 {
@@ -507,8 +539,18 @@ static inline int ftrace_graph_addr(unsigned long addr)
                return 1;
 
        for (i = 0; i < ftrace_graph_count; i++) {
-               if (addr == ftrace_graph_funcs[i])
+               if (addr == ftrace_graph_funcs[i]) {
+                       /*
+                        * If no irqs are to be traced, but a set_graph_function
+                        * is set, and called by an interrupt handler, we still
+                        * want to trace it.
+                        */
+                       if (in_irq())
+                               trace_recursion_set(TRACE_IRQ_BIT);
+                       else
+                               trace_recursion_clear(TRACE_IRQ_BIT);
                        return 1;
+               }
        }
 
        return 0;
@@ -609,6 +651,7 @@ enum trace_iterator_flags {
        TRACE_ITER_GRAPH_TIME           = 0x80000,
        TRACE_ITER_RECORD_CMD           = 0x100000,
        TRACE_ITER_OVERWRITE            = 0x200000,
+       TRACE_ITER_STOP_ON_FREE         = 0x400000,
 };
 
 /*
@@ -677,6 +720,7 @@ struct event_subsystem {
        struct dentry           *entry;
        struct event_filter     *filter;
        int                     nr_events;
+       int                     ref_count;
 };
 
 #define FILTER_PRED_INVALID    ((unsigned short)-1)
@@ -784,19 +828,4 @@ 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 */