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powerpc/ftrace: Regroup PPC64 specific operations in ftrace_mprofile.S 

CONFIG_MPROFILE_KERNEL is only for PPC64 and ftrace_mprofile.o
is build on PPC64 only when CONFIG_MPROFILE_KERNEL is defined.

Move saving of r0 inside #ifdef PPC64

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/619dfb672bf4f1b777a4b3f8b4f14e637fea2716.1645099283.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-02-17 13:01:58 +01:00 committed by Michael Ellerman
parent 228216716c
commit a5f04d1f27
1 changed files with 2 additions and 5 deletions
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7
arch/powerpc/kernel/trace/ftrace_mprofile.S
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@ -33,11 +33,6 @@
* and then arrange for the ftrace function to be called.
*/
.macro ftrace_regs_entry allregs
/* Save the original return address in A's stack frame */
#ifdef CONFIG_MPROFILE_KERNEL
PPC_STL r0,LRSAVE(r1)
#endif
/* Create our stack frame + pt_regs */
PPC_STLU r1,-SWITCH_FRAME_SIZE(r1)
@ -46,6 +41,8 @@
SAVE_GPRS(3, 10, r1)
#ifdef CONFIG_PPC64
/* Save the original return address in A's stack frame */
std r0, LRSAVE+SWITCH_FRAME_SIZE(r1)
/* Ok to continue? */
lbz r3, PACA_FTRACE_ENABLED(r13)
cmpdi r3, 0