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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/sh/kernel/perf_callchain.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/sh/kernel/perf_callchain.c')
-rw-r--r--arch/sh/kernel/perf_callchain.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/sh/kernel/perf_callchain.c b/arch/sh/kernel/perf_callchain.c
new file mode 100644
index 00000000..cc80b614
--- /dev/null
+++ b/arch/sh/kernel/perf_callchain.c
@@ -0,0 +1,41 @@
+/*
+ * Performance event callchain support - SuperH architecture code
+ *
+ * Copyright (C) 2009 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/perf_event.h>
+#include <linux/percpu.h>
+#include <asm/unwinder.h>
+#include <asm/ptrace.h>
+
+static int callchain_stack(void *data, char *name)
+{
+ return 0;
+}
+
+static void callchain_address(void *data, unsigned long addr, int reliable)
+{
+ struct perf_callchain_entry *entry = data;
+
+ if (reliable)
+ perf_callchain_store(entry, addr);
+}
+
+static const struct stacktrace_ops callchain_ops = {
+ .stack = callchain_stack,
+ .address = callchain_address,
+};
+
+void
+perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
+{
+ perf_callchain_store(entry, regs->pc);
+
+ unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
+}