ftrace: set up trace event hash infrastructure

[mirror_ubuntu-zesty-kernel.git] / kernel / trace / trace_mmiotrace.c

diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index e62cbf78eab6d6a6270a2a5c97f4ffc7ac443525..fcec59ff2355bff472c4e66e923298ed1561e2a3 100644 (file)
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -11,6 +11,7 @@
 #include <linux/pci.h>
 
 #include "trace.h"
+#include "trace_output.h"
 
 struct header_iter {
        struct pci_dev *dev;
@@ -22,44 +23,35 @@ static unsigned long prev_overruns;
 
 static void mmio_reset_data(struct trace_array *tr)
 {
-       int cpu;
-
        overrun_detected = false;
        prev_overruns = 0;
-       tr->time_start = ftrace_now(tr->cpu);
 
-       for_each_online_cpu(cpu)
-               tracing_reset(tr, cpu);
+       tracing_reset_online_cpus(tr);
 }
 
-static void mmio_trace_init(struct trace_array *tr)
+static int mmio_trace_init(struct trace_array *tr)
 {
        pr_debug("in %s\n", __func__);
        mmio_trace_array = tr;
-       if (tr->ctrl) {
-               mmio_reset_data(tr);
-               enable_mmiotrace();
-       }
+
+       mmio_reset_data(tr);
+       enable_mmiotrace();
+       return 0;
 }
 
 static void mmio_trace_reset(struct trace_array *tr)
 {
        pr_debug("in %s\n", __func__);
-       if (tr->ctrl)
-               disable_mmiotrace();
+
+       disable_mmiotrace();
        mmio_reset_data(tr);
        mmio_trace_array = NULL;
 }
 
-static void mmio_trace_ctrl_update(struct trace_array *tr)
+static void mmio_trace_start(struct trace_array *tr)
 {
        pr_debug("in %s\n", __func__);
-       if (tr->ctrl) {
-               mmio_reset_data(tr);
-               enable_mmiotrace();
-       } else {
-               disable_mmiotrace();
-       }
+       mmio_reset_data(tr);
 }
 
 static int mmio_print_pcidev(struct trace_seq *s, const struct pci_dev *dev)
@@ -271,9 +263,6 @@ static enum print_line_t mmio_print_mark(struct trace_iterator *iter)
        if (!ret)
                return TRACE_TYPE_PARTIAL_LINE;
 
-       if (entry->flags & TRACE_FLAG_CONT)
-               trace_seq_print_cont(s, iter);
-
        return TRACE_TYPE_HANDLED;
 }
 
@@ -296,10 +285,10 @@ static struct tracer mmio_tracer __read_mostly =
        .name           = "mmiotrace",
        .init           = mmio_trace_init,
        .reset          = mmio_trace_reset,
+       .start          = mmio_trace_start,
        .pipe_open      = mmio_pipe_open,
        .close          = mmio_close,
        .read           = mmio_read,
-       .ctrl_update    = mmio_trace_ctrl_update,
        .print_line     = mmio_print_line,
 };
 
@@ -371,5 +360,5 @@ void mmio_trace_mapping(struct mmiotrace_map *map)
 
 int mmio_trace_printk(const char *fmt, va_list args)
 {
-       return trace_vprintk(0, fmt, args);
+       return trace_vprintk(0, -1, fmt, args);
 }