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Message-ID: <20251024180654.1691095-1-willy@infradead.org>
Date: Fri, 24 Oct 2025 19:06:51 +0100
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH] Remove in_irq()
This old alias for in_hardirq() has been marked as deprecated since
2020; remove the stragglers.
Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
drivers/bus/fsl-mc/mc-sys.c | 2 +-
drivers/md/dm-vdo/logger.c | 2 +-
include/linux/lockdep.h | 2 +-
include/linux/preempt.h | 2 --
kernel/bpf/syscall.c | 4 ++--
kernel/time/timer.c | 2 +-
lib/locking-selftest.c | 4 ++--
7 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/bus/fsl-mc/mc-sys.c b/drivers/bus/fsl-mc/mc-sys.c
index b22c59d57c8f..31037f41893e 100644
--- a/drivers/bus/fsl-mc/mc-sys.c
+++ b/drivers/bus/fsl-mc/mc-sys.c
@@ -248,7 +248,7 @@ int mc_send_command(struct fsl_mc_io *mc_io, struct fsl_mc_command *cmd)
enum mc_cmd_status status;
unsigned long irq_flags = 0;
- if (in_irq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
+ if (in_hardirq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
return -EINVAL;
if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
diff --git a/drivers/md/dm-vdo/logger.c b/drivers/md/dm-vdo/logger.c
index 3f7dc2cb6b98..76a987ccf926 100644
--- a/drivers/md/dm-vdo/logger.c
+++ b/drivers/md/dm-vdo/logger.c
@@ -34,7 +34,7 @@ static const char *get_current_interrupt_type(void)
if (in_nmi())
return "NMI";
- if (in_irq())
+ if (in_hardirq())
return "HI";
if (in_softirq())
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 67964dc4db95..dd634103b014 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -616,7 +616,7 @@ do { \
#define lockdep_assert_in_softirq() \
do { \
WARN_ON_ONCE(__lockdep_enabled && \
- (!in_softirq() || in_irq() || in_nmi())); \
+ (!in_softirq() || in_hardirq() || in_nmi())); \
} while (0)
extern void lockdep_assert_in_softirq_func(void);
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 102202185d7a..d964f965c8ff 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -134,11 +134,9 @@ static __always_inline unsigned char interrupt_context_level(void)
/*
* The following macros are deprecated and should not be used in new code:
- * in_irq() - Obsolete version of in_hardirq()
* in_softirq() - We have BH disabled, or are processing softirqs
* in_interrupt() - We're in NMI,IRQ,SoftIRQ context or have BH disabled
*/
-#define in_irq() (hardirq_count())
#define in_softirq() (softirq_count())
#define in_interrupt() (irq_count())
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 8a129746bd6c..6cde6a46babf 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -2330,7 +2330,7 @@ static void bpf_audit_prog(const struct bpf_prog *prog, unsigned int op)
return;
if (audit_enabled == AUDIT_OFF)
return;
- if (!in_irq() && !irqs_disabled())
+ if (!in_hardirq() && !irqs_disabled())
ctx = audit_context();
ab = audit_log_start(ctx, GFP_ATOMIC, AUDIT_BPF);
if (unlikely(!ab))
@@ -2428,7 +2428,7 @@ static void __bpf_prog_put(struct bpf_prog *prog)
struct bpf_prog_aux *aux = prog->aux;
if (atomic64_dec_and_test(&aux->refcnt)) {
- if (in_irq() || irqs_disabled()) {
+ if (in_hardirq() || irqs_disabled()) {
INIT_WORK(&aux->work, bpf_prog_put_deferred);
schedule_work(&aux->work);
} else {
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 553fa469d7cc..282a8e5c05f8 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -2472,7 +2472,7 @@ void update_process_times(int user_tick)
run_local_timers();
rcu_sched_clock_irq(user_tick);
#ifdef CONFIG_IRQ_WORK
- if (in_irq())
+ if (in_hardirq())
irq_work_tick();
#endif
sched_tick();
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index ed99344317f5..d939403331b5 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -202,7 +202,7 @@ static void init_shared_classes(void)
local_irq_disable(); \
__irq_enter(); \
lockdep_hardirq_threaded(); \
- WARN_ON(!in_irq());
+ WARN_ON(!in_hardirq());
#define HARDIRQ_EXIT() \
__irq_exit(); \
@@ -2512,7 +2512,7 @@ DEFINE_LOCK_GUARD_0(NOTTHREADED_HARDIRQ,
do {
local_irq_disable();
__irq_enter();
- WARN_ON(!in_irq());
+ WARN_ON(!in_hardirq());
} while(0), HARDIRQ_EXIT())
DEFINE_LOCK_GUARD_0(SOFTIRQ, SOFTIRQ_ENTER(), SOFTIRQ_EXIT())
--
2.47.2
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