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Commit 5e66684f authored by Anton Blanchard's avatar Anton Blanchard
Browse files

powerpc: ftrace_caller, _mcount is exported to modules so needs _GLOBAL_TOC() 



When testing the ftrace function tracer, I realised that ftrace_caller
and mcount are called from modules and they both call into C, therefore
they need the ABIv2 global entry point to establish r2.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
parent 169c7cee

arch/powerpc/kernel/entry_64.S

+2 −5
Original line number Diff line number Diff line
@@ -1175,7 +1175,7 @@ _GLOBAL(mcount) 
_GLOBAL(_mcount)

	blr



_GLOBAL(ftrace_caller)

_GLOBAL_TOC(ftrace_caller)

	/* Taken from output of objdump from lib64/glibc */

	mflr	r3

	ld	r11, 0(r1)
@@ -1199,10 +1199,7 @@ _GLOBAL(ftrace_graph_stub) 
_GLOBAL(ftrace_stub)

	blr

#else

_GLOBAL(mcount)

	blr



_GLOBAL(_mcount)

_GLOBAL_TOC(_mcount)

	/* Taken from output of objdump from lib64/glibc */

	mflr	r3

	ld	r11, 0(r1)