Split out TRACE() from litmus.h and cleanup some includes

The TRACE() functionality doesn't need all of litmus.h. Currently,
it's impossible to use TRACE() in sched.h due to a circular
dependency. This patch moves TRACE() and friends to
litmus/sched_debug.h, which can be included in sched.h.

While at it, also fix some minor include ugliness that was revealed by
this change.

1 files changed, 37 insertions, 0 deletions

diff --git a/include/litmus/debug_trace.h b/include/litmus/debug_trace.h
new file mode 100644
index 000000000000..0f99be01d569
--- /dev/null
+++ b/include/litmus/debug_trace.h
@@ -0,0 +1,37 @@
+#ifndef LITMUS_DEBUG_TRACE_H
+#define LITMUS_DEBUG_TRACE_H
+
+#ifdef CONFIG_SCHED_DEBUG_TRACE
+void sched_trace_log_message(const char* fmt, ...);
+void dump_trace_buffer(int max);
+#else
+
+#define sched_trace_log_message(fmt, ...)
+
+#endif
+
+extern atomic_t __log_seq_no;
+
+#define TRACE(fmt, args...) \
+        sched_trace_log_message("%d P%d: " fmt, atomic_add_return(1, &__log_seq_no), \
+                                raw_smp_processor_id(), ## args)
+
+#define TRACE_TASK(t, fmt, args...) \
+        TRACE("(%s/%d) " fmt, (t)->comm, (t)->pid, ##args)
+
+#define TRACE_CUR(fmt, args...) \
+        TRACE_TASK(current, fmt, ## args)
+
+#define TRACE_BUG_ON(cond) \
+        do { if (cond) TRACE("BUG_ON(%s) at %s:%d " \
+                             "called from %p current=%s/%d state=%d " \
+                             "flags=%x partition=%d cpu=%d rtflags=%d"\
+                             " job=%u timeslice=%u\n",          \
+        #cond, __FILE__, __LINE__, __builtin_return_address(0), current->comm, \
+        current->pid, current->state, current->flags,  \
+        get_partition(current), smp_processor_id(), get_rt_flags(current), \
+        current->rt_param.job_params.job_no, \
+        current->rt.time_slice\
+        ); } while(0);
+
+#endif