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powerpc: Remove duplicate/unnecessary ifdefs

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When an 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:

  paca.h:
  Hunk1: Code is under check of CONFIG_PPC64 from line 13, 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.

  asm-offsets.c:
  Code is under check of CONFIG_PPC64 from line 176 hence second
  CONFIG_PPC64 at line 249 is a duplicate.

  powermac/feature.c:
  #ifndef CONFIG_PPC64 is used at line 2066. And then in #else again
  #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else means
  CONFIG_PPC64 is defined.

  xmon.c:
  Code is under the check of CONFIG_SMP from line 521 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-sshegde@linux.ibm.com/

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240216053016.528906-1-sshegde@linux.ibm.com
This commit is contained in:
Shrikanth Hegde 2024-02-16 11:00:16 +05:30 committed by Michael Ellerman
parent 97a5253d7c
commit 8c328de8fd
4 changed files with 0 additions and 10 deletions
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4
arch/powerpc/include/asm/paca.h
View File

@ -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;

2
arch/powerpc/kernel/asm-offsets.c
View File

@ -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

2
arch/powerpc/platforms/powermac/feature.c
View File

@ -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 */
};
/*

2
arch/powerpc/xmon/xmon.c
View File

@ -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) {