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| author | Helge Deller <deller@gmx.de> | 2016-05-24 00:23:26 +0300 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-05-24 00:44:44 +0300 |
| commit | 5fece5ad24ab5b57f51f3f18bc9332545ea8705a (patch) | |
| tree | c6151837e09b316402a71c831ee30ab599d38772 /arch/parisc | |
| parent | 90afe0a98e81f8d2cb1146368d86f67769956e58 (diff) | |
| download | linux-5fece5ad24ab5b57f51f3f18bc9332545ea8705a.tar.xz | |
parisc: Use long jump to reach ftrace_return_to_handler()
Depending on config options we will need to use a long jump to reach
ftrace_return_to_handler(). Additionally only compile the
parisc_return_to_handler code when CONFIG_FUNCTION_GRAPH_TRACER is set.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/entry.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index 2b2b0df67be5..baa3d9d6e971 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -2019,6 +2019,7 @@ ftrace_stub: .procend ENDPROC(mcount) +#ifdef CONFIG_FUNCTION_GRAPH_TRACER .align 8 .globl return_to_handler .type return_to_handler, @function @@ -2040,11 +2041,17 @@ parisc_return_to_handler: #endif /* call ftrace_return_to_handler(0) */ + .import ftrace_return_to_handler,code + load32 ftrace_return_to_handler,%ret0 + load32 .Lftrace_ret,%r2 #ifdef CONFIG_64BIT ldo -16(%sp),%ret1 /* Reference param save area */ + bve (%ret0) +#else + bv %r0(%ret0) #endif - BL ftrace_return_to_handler,%r2 ldi 0,%r26 +.Lftrace_ret: copy %ret0,%rp /* restore original return values */ @@ -2062,6 +2069,8 @@ parisc_return_to_handler: .procend ENDPROC(return_to_handler) +#endif /* CONFIG_FUNCTION_GRAPH_TRACER */ + #endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_IRQSTACKS |