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Message-Id: <34af3942cd27f6b5365caae772fb8e0af44763d5.1561735587.git.christophe.leroy@c-s.fr>
Date: Fri, 28 Jun 2019 15:47:51 +0000 (UTC)
From: Christophe Leroy <christophe.leroy@....fr>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>, mikey@...ling.org
Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [RFC PATCH v2 02/12] powerpc/ptrace: drop unnecessary #ifdefs
CONFIG_PPC64
Drop a bunch of #ifdefs CONFIG_PPC64 that are not vital.
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
arch/powerpc/include/asm/ptrace.h | 9 ++++-----
arch/powerpc/include/uapi/asm/ptrace.h | 12 ++++--------
arch/powerpc/kernel/ptrace/ptrace.c | 24 +++---------------------
3 files changed, 11 insertions(+), 34 deletions(-)
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index faa5a338ac5a..1506a9c61d50 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -36,11 +36,10 @@ struct pt_regs
unsigned long link;
unsigned long xer;
unsigned long ccr;
-#ifdef CONFIG_PPC64
- unsigned long softe;
-#else
- unsigned long mq;
-#endif
+ union {
+ unsigned long softe;
+ unsigned long mq;
+ };
unsigned long trap;
unsigned long dar;
unsigned long dsisr;
diff --git a/arch/powerpc/include/uapi/asm/ptrace.h b/arch/powerpc/include/uapi/asm/ptrace.h
index f5f1ccc740fc..37d7befbb8dc 100644
--- a/arch/powerpc/include/uapi/asm/ptrace.h
+++ b/arch/powerpc/include/uapi/asm/ptrace.h
@@ -43,12 +43,11 @@ struct pt_regs
unsigned long link;
unsigned long xer;
unsigned long ccr;
-#ifdef __powerpc64__
- unsigned long softe; /* Soft enabled/disabled */
-#else
- unsigned long mq; /* 601 only (not used at present) */
+ union {
+ unsigned long softe; /* Soft enabled/disabled */
+ unsigned long mq; /* 601 only (not used at present) */
/* Used on APUS to hold IPL value. */
-#endif
+ };
unsigned long trap; /* Reason for being here */
/* N.B. for critical exceptions on 4xx, the dar and dsisr
fields are overloaded to hold srr0 and srr1. */
@@ -105,11 +104,8 @@ struct pt_regs
#define PT_LNK 36
#define PT_XER 37
#define PT_CCR 38
-#ifndef __powerpc64__
#define PT_MQ 39
-#else
#define PT_SOFTE 39
-#endif
#define PT_TRAP 40
#define PT_DAR 41
#define PT_DSISR 42
diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c
index 684b0b315c32..0afb223c4d57 100644
--- a/arch/powerpc/kernel/ptrace/ptrace.c
+++ b/arch/powerpc/kernel/ptrace/ptrace.c
@@ -113,11 +113,8 @@ static const struct pt_regs_offset regoffset_table[] = {
REG_OFFSET_NAME(link),
REG_OFFSET_NAME(xer),
REG_OFFSET_NAME(ccr),
-#ifdef CONFIG_PPC64
REG_OFFSET_NAME(softe),
-#else
REG_OFFSET_NAME(mq),
-#endif
REG_OFFSET_NAME(trap),
REG_OFFSET_NAME(dar),
REG_OFFSET_NAME(dsisr),
@@ -289,17 +286,15 @@ int ptrace_get_reg(struct task_struct *task, int regno, unsigned long *data)
if (regno == PT_DSCR)
return get_user_dscr(task, data);
-#ifdef CONFIG_PPC64
/*
* softe copies paca->irq_soft_mask variable state. Since irq_soft_mask is
* no more used as a flag, lets force usr to alway see the softe value as 1
* which means interrupts are not soft disabled.
*/
- if (regno == PT_SOFTE) {
+ if (IS_ENABLED(CONFIG_PPC64) && regno == PT_SOFTE) {
*data = 1;
return 0;
}
-#endif
regs_max = sizeof(struct user_pt_regs) / sizeof(unsigned long);
if (regno < regs_max) {
@@ -2013,7 +2008,6 @@ static const struct user_regset_view user_ppc_native_view = {
.regsets = native_regsets, .n = ARRAY_SIZE(native_regsets)
};
-#ifdef CONFIG_PPC64
#include <linux/compat.h>
static int gpr32_get_common(struct task_struct *target,
@@ -2287,14 +2281,11 @@ static const struct user_regset_view user_ppc_compat_view = {
.name = "ppc", .e_machine = EM_PPC, .ei_osabi = ELF_OSABI,
.regsets = compat_regsets, .n = ARRAY_SIZE(compat_regsets)
};
-#endif /* CONFIG_PPC64 */
const struct user_regset_view *task_user_regset_view(struct task_struct *task)
{
-#ifdef CONFIG_PPC64
- if (test_tsk_thread_flag(task, TIF_32BIT))
+ if (IS_ENABLED(CONFIG_PPC64) && test_tsk_thread_flag(task, TIF_32BIT))
return &user_ppc_compat_view;
-#endif
return &user_ppc_native_view;
}
@@ -3081,11 +3072,7 @@ long arch_ptrace(struct task_struct *child, long request,
else
dbginfo.num_data_bps = 0;
dbginfo.num_condition_regs = 0;
-#ifdef CONFIG_PPC64
- dbginfo.data_bp_alignment = 8;
-#else
- dbginfo.data_bp_alignment = 4;
-#endif
+ dbginfo.data_bp_alignment = sizeof(long);
dbginfo.sizeof_condition = 0;
#ifdef CONFIG_HAVE_HW_BREAKPOINT
dbginfo.features = PPC_DEBUG_FEATURE_DATA_BP_RANGE;
@@ -3322,12 +3309,10 @@ long do_syscall_trace_enter(struct pt_regs *regs)
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->gpr[0]);
-#ifdef CONFIG_PPC64
if (!is_32bit_task())
audit_syscall_entry(regs->gpr[0], regs->gpr[3], regs->gpr[4],
regs->gpr[5], regs->gpr[6]);
else
-#endif
audit_syscall_entry(regs->gpr[0],
regs->gpr[3] & 0xffffffff,
regs->gpr[4] & 0xffffffff,
@@ -3382,13 +3367,10 @@ void __init pt_regs_check(void)
offsetof(struct user_pt_regs, xer));
BUILD_BUG_ON(offsetof(struct pt_regs, ccr) !=
offsetof(struct user_pt_regs, ccr));
-#ifdef __powerpc64__
BUILD_BUG_ON(offsetof(struct pt_regs, softe) !=
offsetof(struct user_pt_regs, softe));
-#else
BUILD_BUG_ON(offsetof(struct pt_regs, mq) !=
offsetof(struct user_pt_regs, mq));
-#endif
BUILD_BUG_ON(offsetof(struct pt_regs, trap) !=
offsetof(struct user_pt_regs, trap));
BUILD_BUG_ON(offsetof(struct pt_regs, dar) !=
--
2.13.3
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