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authorHelge Deller <deller@gmx.de>2016-04-13 22:27:22 +0200
committerHelge Deller <deller@gmx.de>2016-04-14 17:47:19 +0200
commit366dd4ea9d5f0eb78fdf4982d76506f99480ec0a (patch)
treea1540803a33b13685a1fe2e3fa8af13bc2e7f018 /arch/parisc/include
parentb562e44f507e863c6792946e4e1b1449fbbac85d (diff)
downloadlinux-366dd4ea9d5f0eb78fdf4982d76506f99480ec0a.tar.gz
parisc: Fix ftrace function tracer
Fix the FTRACE function tracer for 32- and 64-bit kernel. The former code was horribly broken. Reimplement most coding in assembly and utilize optimizations, e.g. put mcount() and ftrace_stub() into one L1 cacheline. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include')
-rw-r--r--arch/parisc/include/asm/ftrace.h18
1 files changed, 1 insertions, 17 deletions
diff --git a/arch/parisc/include/asm/ftrace.h b/arch/parisc/include/asm/ftrace.h
index 544ed8ef87eb..24cd81d58d70 100644
--- a/arch/parisc/include/asm/ftrace.h
+++ b/arch/parisc/include/asm/ftrace.h
@@ -4,23 +4,7 @@
#ifndef __ASSEMBLY__
extern void mcount(void);
-/*
- * Stack of return addresses for functions of a thread.
- * Used in struct thread_info
- */
-struct ftrace_ret_stack {
- unsigned long ret;
- unsigned long func;
- unsigned long long calltime;
-};
-
-/*
- * Primary handler of a function return.
- * It relays on ftrace_return_to_handler.
- * Defined in entry.S
- */
-extern void return_to_handler(void);
-
+#define MCOUNT_INSN_SIZE 4
extern unsigned long return_address(unsigned int);