linux-kernel - [RFC PATCH 3/3] arch/powerpc: remove duplicate ifdefs

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Message-Id: <20240118080326.13137-4-sshegde@linux.ibm.com>
Date: Thu, 18 Jan 2024 13:33:26 +0530
From: Shrikanth Hegde <sshegde@...ux.ibm.com>
To: linux-kernel@...r.kernel.org, linux-ntfs-dev@...ts.sourceforge.net,
        linux-xfs@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Cc: sshegde@...ux.ibm.com, mpe@...erman.id.au, mingo@...nel.org,
        peterz@...radead.org, chandan.babu@...cle.com, anton@...era.com
Subject: [RFC PATCH 3/3] arch/powerpc: remove duplicate ifdefs

when a ifdef is used in the below manner, second one could be considered as
duplicate.

ifdef DEFINE_A
..code block...
ifdef DEFINE_A
..code block...
endif
..code block...
endif

few places in arch/powerpc where this pattern was seen. In addition to that
in paca.h, CONFIG_PPC_BOOK3S_64 was defined back to back. merged the two
ifdefs.

No functional change is intended here. It only aims to improve code
readability.

Signed-off-by: Shrikanth Hegde <sshegde@...ux.ibm.com>
---
 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