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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/oprofile/init.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/i386/oprofile/init.c')
-rw-r--r--arch/i386/oprofile/init.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/i386/oprofile/init.c b/arch/i386/oprofile/init.c
new file mode 100644
index 00000000000..c90332de582
--- /dev/null
+++ b/arch/i386/oprofile/init.c
@@ -0,0 +1,48 @@
+/**
+ * @file init.c
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@movementarian.org>
+ */
+
+#include <linux/oprofile.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+
+/* We support CPUs that have performance counters like the Pentium Pro
+ * with the NMI mode driver.
+ */
+
+extern int nmi_init(struct oprofile_operations * ops);
+extern int nmi_timer_init(struct oprofile_operations * ops);
+extern void nmi_exit(void);
+extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+
+int __init oprofile_arch_init(struct oprofile_operations * ops)
+{
+ int ret;
+
+ ret = -ENODEV;
+
+#ifdef CONFIG_X86_LOCAL_APIC
+ ret = nmi_init(ops);
+#endif
+#ifdef CONFIG_X86_IO_APIC
+ if (ret < 0)
+ ret = nmi_timer_init(ops);
+#endif
+ ops->backtrace = x86_backtrace;
+
+ return ret;
+}
+
+
+void oprofile_arch_exit(void)
+{
+#ifdef CONFIG_X86_LOCAL_APIC
+ nmi_exit();
+#endif
+}