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powerpc/ftrace: Style cleanup in ftrace_mprofile.S

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Add some line breaks to better match the file's style, add
some space after comma and fix a couple of misplaced blanks.

Suggested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/973506292d0c7b05c06530c8e11803ce38e5eda2.1644949750.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-02-15 19:31:25 +01:00 committed by Michael Ellerman
parent fc75f87337
commit 76b372814b
1 changed files with 8 additions and 4 deletions
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12
arch/powerpc/kernel/trace/ftrace_mprofile.S
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@ -87,8 +87,9 @@ _GLOBAL(ftrace_regs_caller)
#endif
#ifdef CONFIG_LIVEPATCH_64
mr r14,r7 /* remember old NIP */
mr r14, r7 /* remember old NIP */
#endif
/* Calculate ip from nip-4 into r3 for call below */
subi r3, r7, MCOUNT_INSN_SIZE
@ -102,7 +103,7 @@ _GLOBAL(ftrace_regs_caller)
PPC_STL r11, _CCR(r1)
/* Load &pt_regs in r6 for call below */
addi r6, r1 ,STACK_FRAME_OVERHEAD
addi r6, r1, STACK_FRAME_OVERHEAD
/* ftrace_call(r3, r4, r5, r6) */
.globl ftrace_regs_call
@ -113,6 +114,7 @@ ftrace_regs_call:
/* Load ctr with the possibly modified NIP */
PPC_LL r3, _NIP(r1)
mtctr r3
#ifdef CONFIG_LIVEPATCH_64
cmpd r14, r3 /* has NIP been altered? */
#endif
@ -196,7 +198,7 @@ _GLOBAL(ftrace_caller)
#ifdef CONFIG_LIVEPATCH_64
SAVE_GPR(14, r1)
mr r14,r7 /* remember old NIP */
mr r14, r7 /* remember old NIP */
#endif
/* Calculate ip from nip-4 into r3 for call below */
subi r3, r7, MCOUNT_INSN_SIZE
@ -210,7 +212,7 @@ _GLOBAL(ftrace_caller)
PPC_STL r8, _MSR(r1)
/* Load &pt_regs in r6 for call below */
addi r6, r1 ,STACK_FRAME_OVERHEAD
addi r6, r1, STACK_FRAME_OVERHEAD
/* ftrace_call(r3, r4, r5, r6) */
.globl ftrace_call
@ -220,6 +222,7 @@ ftrace_call:
PPC_LL r3, _NIP(r1)
mtctr r3
#ifdef CONFIG_LIVEPATCH_64
cmpd r14, r3 /* has NIP been altered? */
REST_GPR(14, r1)
@ -244,6 +247,7 @@ ftrace_call:
/* Based on the cmpd above, if the NIP was altered handle livepatch */
bne- livepatch_handler
#endif
bctr /* jump after _mcount site */
#ifdef CONFIG_LIVEPATCH_64