powerpc/sputrace: Use the generic event tracer

I wrote sputrace before generic tracing infrastrucure was available.
Now that we have the generic event tracer we can convert it over and
remove a lot of code:

  8 files changed, 45 insertions(+), 285 deletions(-)

To use it make sure CONFIG_EVENT_TRACING is enabled and then enable
the spufs trace channel by

  echo 1 > /sys/kernel/debug/tracing/events/spufs/spufs_context/enable

and then read the trace records using e.g.

  cat /sys/kernel/debug/tracing/trace

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/sputrace.h b/arch/powerpc/platforms/cell/spufs/sputrace.h
new file mode 100644
index 000000000000..db2656aa4103
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/sputrace.h
@@ -0,0 +1,39 @@
+#if !defined(_TRACE_SPUFS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SPUFS_H
+
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM spufs
+
+TRACE_EVENT(spufs_context,
+	TP_PROTO(struct spu_context *ctx, struct spu *spu, const char *name),
+	TP_ARGS(ctx, spu, name),
+
+	TP_STRUCT__entry(
+		__field(const char *, name)
+		__field(int, owner_tid)
+		__field(int, number)
+	),
+
+	TP_fast_assign(
+		__entry->name = name;
+		__entry->owner_tid = ctx->tid;
+		__entry->number = spu ? spu->number : -1;
+	),
+
+	TP_printk("%s (ctxthread = %d, spu = %d)",
+		__entry->name, __entry->owner_tid, __entry->number)
+);
+
+#define spu_context_trace(name, ctx, spu) \
+	trace_spufs_context(ctx, spu, __stringify(name))
+#define spu_context_nospu_trace(name, ctx) \
+	trace_spufs_context(ctx, NULL, __stringify(name))
+
+#endif /* _TRACE_SPUFS_H */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#define TRACE_INCLUDE_FILE sputrace
+#include <trace/define_trace.h>