tracing/core: bring back raw trace_printk for dynamic formats strings

[linux-2.6-omap-h63xx.git] / kernel / trace / trace_boot.c

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index 366c8c333e136e77d79a4579b4e70f24242b1404..7a30fc4c36423fc29f7e4bb97985ccd9e5ca9540 100644 (file)
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -11,6 +11,7 @@
 #include <linux/kallsyms.h>
 
 #include "trace.h"
+#include "trace_output.h"
 
 static struct trace_array *boot_trace;
 static bool pre_initcalls_finished;
@@ -27,13 +28,13 @@ void start_boot_trace(void)
 
 void enable_boot_trace(void)
 {
-       if (pre_initcalls_finished)
+       if (boot_trace && pre_initcalls_finished)
                tracing_start_sched_switch_record();
 }
 
 void disable_boot_trace(void)
 {
-       if (pre_initcalls_finished)
+       if (boot_trace && pre_initcalls_finished)
                tracing_stop_sched_switch_record();
 }
 
@@ -42,6 +43,9 @@ static int boot_trace_init(struct trace_array *tr)
        int cpu;
        boot_trace = tr;
 
+       if (!tr)
+               return 0;
+
        for_each_cpu(cpu, cpu_possible_mask)
                tracing_reset(tr, cpu);
 
@@ -128,10 +132,9 @@ void trace_boot_call(struct boot_trace_call *bt, initcall_t fn)
 {
        struct ring_buffer_event *event;
        struct trace_boot_call *entry;
-       unsigned long irq_flags;
        struct trace_array *tr = boot_trace;
 
-       if (!pre_initcalls_finished)
+       if (!tr || !pre_initcalls_finished)
                return;
 
        /* Get its name now since this function could
@@ -140,18 +143,13 @@ void trace_boot_call(struct boot_trace_call *bt, initcall_t fn)
        sprint_symbol(bt->func, (unsigned long)fn);
        preempt_disable();
 
-       event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry),
-                                        &irq_flags);
+       event = trace_buffer_lock_reserve(tr, TRACE_BOOT_CALL,
+                                         sizeof(*entry), 0, 0);
        if (!event)
                goto out;
        entry   = ring_buffer_event_data(event);
-       tracing_generic_entry_update(&entry->ent, 0, 0);
-       entry->ent.type = TRACE_BOOT_CALL;
        entry->boot_call = *bt;
-       ring_buffer_unlock_commit(tr->buffer, event, irq_flags);
-
-       trace_wake_up();
-
+       trace_buffer_unlock_commit(tr, event, 0, 0);
  out:
        preempt_enable();
 }
@@ -160,27 +158,21 @@ void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn)
 {
        struct ring_buffer_event *event;
        struct trace_boot_ret *entry;
-       unsigned long irq_flags;
        struct trace_array *tr = boot_trace;
 
-       if (!pre_initcalls_finished)
+       if (!tr || !pre_initcalls_finished)
                return;
 
        sprint_symbol(bt->func, (unsigned long)fn);
        preempt_disable();
 
-       event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry),
-                                        &irq_flags);
+       event = trace_buffer_lock_reserve(tr, TRACE_BOOT_RET,
+                                         sizeof(*entry), 0, 0);
        if (!event)
                goto out;
        entry   = ring_buffer_event_data(event);
-       tracing_generic_entry_update(&entry->ent, 0, 0);
-       entry->ent.type = TRACE_BOOT_RET;
        entry->boot_ret = *bt;
-       ring_buffer_unlock_commit(tr->buffer, event, irq_flags);
-
-       trace_wake_up();
-
+       trace_buffer_unlock_commit(tr, event, 0, 0);
  out:
        preempt_enable();
 }