When a ifdef is used in the below manner, second one could be considered as
duplicate.
ifdef DEFINE_A
...code block...
ifdef DEFINE_A <-- This is a duplicate.
...code block...
endif
else
ifndef DEFINE_A <-- This is also duplicate.
...code block...
endif
endif
More details about the script and methods used to find these code
patterns are in cover letter of [1]
Few places in arch/powerpc where this pattern was seen.
Hunk1: Code is under check of CONFIG_PPC64 from line 13 in
arch/powerpc/include/asm/paca.h. Hence the second CONFIG_PPC64 at line 166
is a duplicate.
Hunk2: CONFIG_PPC_BOOK3S_64 was defined back to back. Merged the two
ifdefs.
Hunk3: Code is under check of CONFIG_PPC64 from line 176 in
arch/powerpc/kernel/asm-offsets.c. Hence second CONFIG_PPC64 at line 249
is a duplicate.
Hunk4: #ifndef CONFIG_PPC64 is used at line 2066 in
arch/powerpc/platforms/powermac/feature.c. And then in #else
again #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else
means CONFIG_PPC64 is defined.
Hunk5: Code is under the check of CONFIG_SMP from line 521 in
arch/powerpc/xmon/xmon.c. Hence the same check of CONFIG_SMP at line 646
is a duplicate.
No functional change is intended here. It only aims to improve code
readability.
[1] https://lore.kernel.org/all/20240118080326.13137-1-sshe...@linux.ibm.com/
Signed-off-by: Shrikanth Hegde
---
Changes from v2:
- Converted from series to individual patches.
- Dropped RFC tag.
- Added more context on each hunk for review.
arch/powerpc/include/asm/paca.h | 4
arch/powerpc/kernel/asm-offsets.c | 2 --
arch/powerpc/platforms/powermac/feature.c | 2 --
arch/powerpc/xmon/xmon.c | 2 --
4 files changed, 10 deletions(-)
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index e667d455ecb4..1d58da946739 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -163,9 +163,7 @@ struct paca_struct {
u64 kstack; /* Saved Kernel stack addr */
u64 saved_r1; /* r1 save for RTAS calls or PM or EE=0
*/
u64 saved_msr; /* MSR saved here by enter_rtas */
-#ifdef CONFIG_PPC64
u64 exit_save_r1; /* Syscall/interrupt R1 save */
-#endif
#ifdef CONFIG_PPC_BOOK3E_64
u16 trap_save; /* Used when bad stack is encountered */
#endif
@@ -214,8 +212,6 @@ struct paca_struct {
/* Non-maskable exceptions that are not performance critical */
u64 exnmi[EX_SIZE]; /* used for system reset (nmi) */
u64 exmc[EX_SIZE]; /* used for machine checks */
-#endif
-#ifdef CONFIG_PPC_BOOK3S_64
/* Exclusive stacks for system reset and machine check exception. */
void *nmi_emergency_sp;
void *mc_emergency_sp;
diff --git a/arch/powerpc/kernel/asm-offsets.c
b/arch/powerpc/kernel/asm-offsets.c
index 9f14d95b8b32..f029755f9e69 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -246,9 +246,7 @@ int main(void)
OFFSET(PACAHWCPUID, paca_struct, hw_cpu_id);
OFFSET(PACAKEXECSTATE, paca_struct, kexec_state);
OFFSET(PACA_DSCR_DEFAULT, paca_struct, dscr_default);
-#ifdef CONFIG_PPC64
OFFSET(PACA_EXIT_SAVE_R1, paca_struct, exit_save_r1);
-#endif
#ifdef CONFIG_PPC_BOOK3E_64
OFFSET(PACA_TRAP_SAVE, paca_struct, trap_save);
#endif
diff --git a/arch/powerpc/platforms/powermac/feature.c
b/arch/powerpc/platforms/powermac/feature.c
index 81c9fbae88b1..2cc257f75c50 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -2333,7 +2333,6 @@ static struct pmac_mb_def pmac_mb_defs[] = {
PMAC_TYPE_POWERMAC_G5, g5_features,
0,
},
-#ifdef CONFIG_PPC64
{ "PowerMac7,3", "PowerMac G5",
PMAC_TYPE_POWERMAC_G5, g5_features,
0,
@@ -2359,7 +2358,6 @@ static struct pmac_mb_def pmac_mb_defs[] = {
0,
},
#endif /* CONFIG_PPC64 */
-#endif /* CONFIG_PPC64 */
};
/*
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index b3b94cd37713..f413c220165c 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -643,10 +643,8 @@ static int xmon_core(struct pt_regs *regs, volatile int
fromipi)
touch_nmi_watchdog();
} else {
cmd = 1;
-#ifdef CONFIG_SMP
if (xmon_batch)
cmd = batch_cmds(regs);
-#endif
if (!locked_down && cmd)
cmd = cmds(regs);
if (locked_down || cmd != 0) {
--
2.39.3
