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| author | Helge Deller <deller@gmx.de> | 2016-04-13 22:27:22 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-04-14 17:47:19 +0200 |
| commit | 366dd4ea9d5f0eb78fdf4982d76506f99480ec0a (patch) | |
| tree | a1540803a33b13685a1fe2e3fa8af13bc2e7f018 /arch/parisc/include/asm/ftrace.h | |
| parent | Linux 4.5 (diff) | |
| download | linux-366dd4ea9d5f0eb78fdf4982d76506f99480ec0a.tar.xz linux-366dd4ea9d5f0eb78fdf4982d76506f99480ec0a.zip | |
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/asm/ftrace.h')
| -rw-r--r-- | arch/parisc/include/asm/ftrace.h | 18 |
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); |