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Message-ID: <20241025100700.3714552-2-ruanjinjie@huawei.com>
Date: Fri, 25 Oct 2024 18:06:42 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <oleg@...hat.com>, <linux@...linux.org.uk>, <will@...nel.org>,
<mark.rutland@....com>, <catalin.marinas@....com>, <sstabellini@...nel.org>,
<maz@...nel.org>, <tglx@...utronix.de>, <peterz@...radead.org>,
<luto@...nel.org>, <kees@...nel.org>, <wad@...omium.org>,
<akpm@...ux-foundation.org>, <samitolvanen@...gle.com>, <arnd@...db.de>,
<ojeda@...nel.org>, <rppt@...nel.org>, <hca@...ux.ibm.com>,
<aliceryhl@...gle.com>, <samuel.holland@...ive.com>, <paulmck@...nel.org>,
<aquini@...hat.com>, <petr.pavlu@...e.com>, <ruanjinjie@...wei.com>,
<viro@...iv.linux.org.uk>, <rmk+kernel@...linux.org.uk>, <ardb@...nel.org>,
<wangkefeng.wang@...wei.com>, <surenb@...gle.com>,
<linus.walleij@...aro.org>, <yangyj.ee@...il.com>, <broonie@...nel.org>,
<mbenes@...e.cz>, <puranjay@...nel.org>, <pcc@...gle.com>,
<guohanjun@...wei.com>, <sudeep.holla@....com>,
<Jonathan.Cameron@...wei.com>, <prarit@...hat.com>, <liuwei09@...tc.cn>,
<dwmw@...zon.co.uk>, <oliver.upton@...ux.dev>, <kristina.martsenko@....com>,
<ptosi@...gle.com>, <frederic@...nel.org>, <vschneid@...hat.com>,
<thiago.bauermann@...aro.org>, <joey.gouly@....com>,
<liuyuntao12@...wei.com>, <leobras@...hat.com>,
<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<xen-devel@...ts.xenproject.org>
Subject: [PATCH -next v4 01/19] arm64: ptrace: Replace interrupts_enabled() with regs_irqs_disabled()
Implement regs_irqs_disabled(), and replace interrupts_enabled() macro
with regs_irqs_disabled() all over the place.
No functional changes.
Suggested-by: Mark Rutland <mark.rutland@....com>
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
arch/arm/include/asm/ptrace.h | 4 ++--
arch/arm/kernel/hw_breakpoint.c | 2 +-
arch/arm/kernel/process.c | 2 +-
arch/arm/mm/alignment.c | 2 +-
arch/arm/mm/fault.c | 2 +-
arch/arm64/include/asm/daifflags.h | 2 +-
arch/arm64/include/asm/ptrace.h | 4 ++--
arch/arm64/include/asm/xen/events.h | 2 +-
arch/arm64/kernel/acpi.c | 2 +-
arch/arm64/kernel/debug-monitors.c | 2 +-
arch/arm64/kernel/entry-common.c | 4 ++--
arch/arm64/kernel/sdei.c | 2 +-
drivers/irqchip/irq-gic-v3.c | 2 +-
13 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 6eb311fb2da0..2054b17b3a69 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -46,8 +46,8 @@ struct svc_pt_regs {
#define processor_mode(regs) \
((regs)->ARM_cpsr & MODE_MASK)
-#define interrupts_enabled(regs) \
- (!((regs)->ARM_cpsr & PSR_I_BIT))
+#define regs_irqs_disabled(regs) \
+ ((regs)->ARM_cpsr & PSR_I_BIT)
#define fast_interrupts_enabled(regs) \
(!((regs)->ARM_cpsr & PSR_F_BIT))
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index a12efd0f43e8..bc7c9f5a2767 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -947,7 +947,7 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr,
preempt_disable();
- if (interrupts_enabled(regs))
+ if (!regs_irqs_disabled(regs))
local_irq_enable();
/* We only handle watchpoints and hardware breakpoints. */
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index e16ed102960c..5979a5cec2d0 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -167,7 +167,7 @@ void __show_regs(struct pt_regs *regs)
segment = "user";
printk("Flags: %s IRQs o%s FIQs o%s Mode %s ISA %s Segment %s\n",
- buf, interrupts_enabled(regs) ? "n" : "ff",
+ buf, !regs_irqs_disabled(regs) ? "n" : "ff",
fast_interrupts_enabled(regs) ? "n" : "ff",
processor_modes[processor_mode(regs)],
isa_modes[isa_mode(regs)], segment);
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 3c6ddb1afdc4..642aae48a09e 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -809,7 +809,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
int thumb2_32b = 0;
int fault;
- if (interrupts_enabled(regs))
+ if (!regs_irqs_disabled(regs))
local_irq_enable();
instrptr = instruction_pointer(regs);
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index ab01b51de559..dd8e95fcce10 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -275,7 +275,7 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
/* Enable interrupts if they were enabled in the parent context. */
- if (interrupts_enabled(regs))
+ if (!regs_irqs_disabled(regs))
local_irq_enable();
/*
diff --git a/arch/arm64/include/asm/daifflags.h b/arch/arm64/include/asm/daifflags.h
index fbb5c99eb2f9..5fca48009043 100644
--- a/arch/arm64/include/asm/daifflags.h
+++ b/arch/arm64/include/asm/daifflags.h
@@ -128,7 +128,7 @@ static inline void local_daif_inherit(struct pt_regs *regs)
{
unsigned long flags = regs->pstate & DAIF_MASK;
- if (interrupts_enabled(regs))
+ if (!regs_irqs_disabled(regs))
trace_hardirqs_on();
if (system_uses_irq_prio_masking())
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index 47ff8654c5ec..3e5372a98da4 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -214,8 +214,8 @@ static inline void forget_syscall(struct pt_regs *regs)
(regs)->pmr == GIC_PRIO_IRQON : \
true)
-#define interrupts_enabled(regs) \
- (!((regs)->pstate & PSR_I_BIT) && irqs_priority_unmasked(regs))
+#define regs_irqs_disabled(regs) \
+ (((regs)->pstate & PSR_I_BIT) || (!irqs_priority_unmasked(regs)))
#define fast_interrupts_enabled(regs) \
(!((regs)->pstate & PSR_F_BIT))
diff --git a/arch/arm64/include/asm/xen/events.h b/arch/arm64/include/asm/xen/events.h
index 2788e95d0ff0..2977b5fe068d 100644
--- a/arch/arm64/include/asm/xen/events.h
+++ b/arch/arm64/include/asm/xen/events.h
@@ -14,7 +14,7 @@ enum ipi_vector {
static inline int xen_irqs_disabled(struct pt_regs *regs)
{
- return !interrupts_enabled(regs);
+ return regs_irqs_disabled(regs);
}
#define xchg_xen_ulong(ptr, val) xchg((ptr), (val))
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index e6f66491fbe9..732f89daae23 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -403,7 +403,7 @@ int apei_claim_sea(struct pt_regs *regs)
return_to_irqs_enabled = !irqs_disabled_flags(arch_local_save_flags());
if (regs)
- return_to_irqs_enabled = interrupts_enabled(regs);
+ return_to_irqs_enabled = !regs_irqs_disabled(regs);
/*
* SEA can interrupt SError, mask it and describe this as an NMI so
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index c60a4a90c6a5..5497df05dd1a 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -231,7 +231,7 @@ static void send_user_sigtrap(int si_code)
if (WARN_ON(!user_mode(regs)))
return;
- if (interrupts_enabled(regs))
+ if (!regs_irqs_disabled(regs))
local_irq_enable();
arm64_force_sig_fault(SIGTRAP, si_code, instruction_pointer(regs),
diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c
index b260ddc4d3e9..c547e70428d3 100644
--- a/arch/arm64/kernel/entry-common.c
+++ b/arch/arm64/kernel/entry-common.c
@@ -73,7 +73,7 @@ static __always_inline void __exit_to_kernel_mode(struct pt_regs *regs)
{
lockdep_assert_irqs_disabled();
- if (interrupts_enabled(regs)) {
+ if (!regs_irqs_disabled(regs)) {
if (regs->exit_rcu) {
trace_hardirqs_on_prepare();
lockdep_hardirqs_on_prepare();
@@ -569,7 +569,7 @@ static void noinstr el1_interrupt(struct pt_regs *regs,
{
write_sysreg(DAIF_PROCCTX_NOIRQ, daif);
- if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && !interrupts_enabled(regs))
+ if (IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && regs_irqs_disabled(regs))
__el1_pnmi(regs, handler);
else
__el1_irq(regs, handler);
diff --git a/arch/arm64/kernel/sdei.c b/arch/arm64/kernel/sdei.c
index 255d12f881c2..27a17da635d8 100644
--- a/arch/arm64/kernel/sdei.c
+++ b/arch/arm64/kernel/sdei.c
@@ -247,7 +247,7 @@ unsigned long __kprobes do_sdei_event(struct pt_regs *regs,
* If we interrupted the kernel with interrupts masked, we always go
* back to wherever we came from.
*/
- if (mode == kernel_mode && !interrupts_enabled(regs))
+ if (mode == kernel_mode && regs_irqs_disabled(regs))
return SDEI_EV_HANDLED;
/*
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index ce87205e3e82..5c832c436bd8 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -932,7 +932,7 @@ static void __gic_handle_irq_from_irqsoff(struct pt_regs *regs)
static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
{
- if (unlikely(gic_supports_nmi() && !interrupts_enabled(regs)))
+ if (unlikely(gic_supports_nmi() && regs_irqs_disabled(regs)))
__gic_handle_irq_from_irqsoff(regs);
else
__gic_handle_irq_from_irqson(regs);
--
2.34.1
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