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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2014-10-07 15:45:10 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-10-09 09:14:18 +0200 |
| commit | 53255c9a4dade6ff2162121430d13aaadb38a69c (patch) | |
| tree | 1f6514d2397a3a10922abbdda3c59f792147a5c2 /arch/s390/kernel/mcount64.S | |
| parent | a62bc0739253939d6fce40d51d92412252a9bb55 (diff) | |
| download | op-kernel-dev-53255c9a4dade6ff2162121430d13aaadb38a69c.zip op-kernel-dev-53255c9a4dade6ff2162121430d13aaadb38a69c.tar.gz | |
s390/ftrace: remove 31 bit ftrace support
31 bit and 64 bit diverge more and more and it is rather painful
to keep both parts running.
To make things simpler just remove the 31 bit support which nobody
uses anyway.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/mcount64.S')
| -rw-r--r-- | arch/s390/kernel/mcount64.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S deleted file mode 100644 index 07abe8d..0000000 --- a/arch/s390/kernel/mcount64.S +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright IBM Corp. 2008, 2009 - * - * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, - * - */ - -#include <linux/linkage.h> -#include <asm/asm-offsets.h> -#include <asm/ftrace.h> -#include <asm/ptrace.h> - - .section .kprobes.text, "ax" - -ENTRY(ftrace_stub) - br %r14 - -#define STACK_FRAME_SIZE (STACK_FRAME_OVERHEAD + __PT_SIZE) -#define STACK_PTREGS (STACK_FRAME_OVERHEAD) -#define STACK_PTREGS_GPRS (STACK_PTREGS + __PT_GPRS) -#define STACK_PTREGS_PSW (STACK_PTREGS + __PT_PSW) - -ENTRY(_mcount) - br %r14 - -ENTRY(ftrace_caller) - .globl ftrace_regs_caller - .set ftrace_regs_caller,ftrace_caller - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_SIZE - stg %r1,__SF_BACKCHAIN(%r15) - stg %r1,(STACK_PTREGS_GPRS+15*8)(%r15) - stg %r0,(STACK_PTREGS_PSW+8)(%r15) - stmg %r2,%r14,(STACK_PTREGS_GPRS+2*8)(%r15) -#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES - aghik %r2,%r0,-MCOUNT_INSN_SIZE - lgrl %r4,function_trace_op - lgrl %r1,ftrace_trace_function -#else - lgr %r2,%r0 - aghi %r2,-MCOUNT_INSN_SIZE - larl %r4,function_trace_op - lg %r4,0(%r4) - larl %r1,ftrace_trace_function - lg %r1,0(%r1) -#endif - lgr %r3,%r14 - la %r5,STACK_PTREGS(%r15) - basr %r14,%r1 -#ifdef CONFIG_FUNCTION_GRAPH_TRACER -# The j instruction gets runtime patched to a nop instruction. -# See ftrace_enable_ftrace_graph_caller. The patched instruction is: -# j .+4 -ENTRY(ftrace_graph_caller) - j ftrace_graph_caller_end - lg %r2,(STACK_PTREGS_GPRS+14*8)(%r15) - lg %r3,(STACK_PTREGS_PSW+8)(%r15) - brasl %r14,prepare_ftrace_return - stg %r2,(STACK_PTREGS_GPRS+14*8)(%r15) -ftrace_graph_caller_end: - .globl ftrace_graph_caller_end -#endif - lg %r1,(STACK_PTREGS_PSW+8)(%r15) - lmg %r2,%r15,(STACK_PTREGS_GPRS+2*8)(%r15) - br %r1 - -#ifdef CONFIG_FUNCTION_GRAPH_TRACER - -ENTRY(return_to_handler) - stmg %r2,%r5,32(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - brasl %r14,ftrace_return_to_handler - aghi %r15,STACK_FRAME_OVERHEAD - lgr %r14,%r2 - lmg %r2,%r5,32(%r15) - br %r14 - -#endif |
