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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-30 23:53:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-30 23:53:32 +0200 |
| commit | 65fb0d23fcddd8697c871047b700c78817bdaa43 (patch) | |
| tree | 119e6e5f276622c4c862f6c9b6d795264ba1603a /arch/powerpc/kernel/entry_64.S | |
| parent | 8c083f081d0014057901c68a0a3e0f8ca7ac8d23 (diff) | |
| parent | dfbbe89e197a77f2c8046a51c74e33e35f878080 (diff) | |
| download | blackbird-op-linux-65fb0d23fcddd8697c871047b700c78817bdaa43.tar.gz blackbird-op-linux-65fb0d23fcddd8697c871047b700c78817bdaa43.zip | |
Merge branch 'linus' into cpumask-for-linus
Conflicts:
arch/x86/kernel/cpu/common.c
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 89 |
1 files changed, 86 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 383ed6eb0085..abfc32330479 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -908,6 +908,12 @@ _GLOBAL(ftrace_caller) ftrace_call: bl ftrace_stub nop +#ifdef CONFIG_FUNCTION_GRAPH_TRACER +.globl ftrace_graph_call +ftrace_graph_call: + b ftrace_graph_stub +_GLOBAL(ftrace_graph_stub) +#endif ld r0, 128(r1) mtlr r0 addi r1, r1, 112 @@ -931,13 +937,90 @@ _GLOBAL(_mcount) ld r5,0(r5) mtctr r5 bctrl - nop + + +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + b ftrace_graph_caller +#endif ld r0, 128(r1) mtlr r0 addi r1, r1, 112 _GLOBAL(ftrace_stub) blr -#endif -#endif +#endif /* CONFIG_DYNAMIC_FTRACE */ + +#ifdef CONFIG_FUNCTION_GRAPH_TRACER +_GLOBAL(ftrace_graph_caller) + /* load r4 with local address */ + ld r4, 128(r1) + subi r4, r4, MCOUNT_INSN_SIZE + + /* get the parent address */ + ld r11, 112(r1) + addi r3, r11, 16 + + bl .prepare_ftrace_return + nop + + ld r0, 128(r1) + mtlr r0 + addi r1, r1, 112 + blr + +_GLOBAL(return_to_handler) + /* need to save return values */ + std r4, -24(r1) + std r3, -16(r1) + std r31, -8(r1) + mr r31, r1 + stdu r1, -112(r1) + + bl .ftrace_return_to_handler + nop + + /* return value has real return address */ + mtlr r3 + + ld r1, 0(r1) + ld r4, -24(r1) + ld r3, -16(r1) + ld r31, -8(r1) + + /* Jump back to real return address */ + blr + +_GLOBAL(mod_return_to_handler) + /* need to save return values */ + std r4, -32(r1) + std r3, -24(r1) + /* save TOC */ + std r2, -16(r1) + std r31, -8(r1) + mr r31, r1 + stdu r1, -112(r1) + + /* + * We are in a module using the module's TOC. + * Switch to our TOC to run inside the core kernel. + */ + LOAD_REG_IMMEDIATE(r4,ftrace_return_to_handler) + ld r2, 8(r4) + + bl .ftrace_return_to_handler + nop + + /* return value has real return address */ + mtlr r3 + + ld r1, 0(r1) + ld r4, -32(r1) + ld r3, -24(r1) + ld r2, -16(r1) + ld r31, -8(r1) + + /* Jump back to real return address */ + blr +#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ +#endif /* CONFIG_FUNCTION_TRACER */ |
