Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / oprofile / common.c

diff --git a/kernel/arch/sh/oprofile/common.c b/kernel/arch/sh/oprofile/common.c
new file mode 100644 (file)
index 0000000..e4dd5d5
--- /dev/null
+++ b/kernel/arch/sh/oprofile/common.c
@@ -0,0 +1,64 @@
+/*
+ * arch/sh/oprofile/init.c
+ *
+ * Copyright (C) 2003 - 2010  Paul Mundt
+ *
+ * Based on arch/mips/oprofile/common.c:
+ *
+ *     Copyright (C) 2004, 2005 Ralf Baechle
+ *     Copyright (C) 2005 MIPS Technologies, Inc.
+ *
+ * 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/oprofile.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+#include <linux/perf_event.h>
+#include <linux/slab.h>
+#include <asm/processor.h>
+
+extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+#ifdef CONFIG_HW_PERF_EVENTS
+/*
+ * This will need to be reworked when multiple PMUs are supported.
+ */
+static char *sh_pmu_op_name;
+
+char *op_name_from_perf_id(void)
+{
+       return sh_pmu_op_name;
+}
+
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+       ops->backtrace = sh_backtrace;
+
+       if (perf_num_counters() == 0)
+               return -ENODEV;
+
+       sh_pmu_op_name = kasprintf(GFP_KERNEL, "%s/%s",
+                                  UTS_MACHINE, perf_pmu_name());
+       if (unlikely(!sh_pmu_op_name))
+               return -ENOMEM;
+
+       return oprofile_perf_init(ops);
+}
+
+void oprofile_arch_exit(void)
+{
+       oprofile_perf_exit();
+       kfree(sh_pmu_op_name);
+}
+#else
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+       ops->backtrace = sh_backtrace;
+       return -ENODEV;
+}
+void oprofile_arch_exit(void) {}
+#endif /* CONFIG_HW_PERF_EVENTS */