vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef LINUX_HARDIRQ_H
|
|
#define LINUX_HARDIRQ_H
|
|
|
|
#include <linux/context_tracking_state.h>
|
|
#include <linux/preempt.h>
|
|
#include <linux/lockdep.h>
|
|
#include <linux/ftrace_irq.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/vtime.h>
|
|
#include <asm/hardirq.h>
|
|
|
|
extern void synchronize_irq(unsigned int irq);
|
|
extern bool synchronize_hardirq(unsigned int irq);
|
|
|
|
#ifdef CONFIG_NO_HZ_FULL
|
|
void __rcu_irq_enter_check_tick(void);
|
|
#else
|
|
static inline void __rcu_irq_enter_check_tick(void) { }
|
|
#endif
|
|
|
|
static __always_inline void rcu_irq_enter_check_tick(void)
|
|
{
|
|
if (context_tracking_enabled())
|
|
__rcu_irq_enter_check_tick();
|
|
}
|
|
|
|
/*
|
|
* It is safe to do non-atomic ops on ->hardirq_context,
|
|
* because NMI handlers may not preempt and the ops are
|
|
* always balanced, so the interrupted value of ->hardirq_context
|
|
* will always be restored.
|
|
*/
|
|
#define __irq_enter() \
|
|
do { \
|
|
preempt_count_add(HARDIRQ_OFFSET); \
|
|
lockdep_hardirq_enter(); \
|
|
account_hardirq_enter(current); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Like __irq_enter() without time accounting for fast
|
|
* interrupts, e.g. reschedule IPI where time accounting
|
|
* is more expensive than the actual interrupt.
|
|
*/
|
|
#define __irq_enter_raw() \
|
|
do { \
|
|
preempt_count_add(HARDIRQ_OFFSET); \
|
|
lockdep_hardirq_enter(); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Enter irq context (on NO_HZ, update jiffies):
|
|
*/
|
|
void irq_enter(void);
|
|
/*
|
|
* Like irq_enter(), but RCU is already watching.
|
|
*/
|
|
void irq_enter_rcu(void);
|
|
|
|
/*
|
|
* Exit irq context without processing softirqs:
|
|
*/
|
|
#define __irq_exit() \
|
|
do { \
|
|
account_hardirq_exit(current); \
|
|
lockdep_hardirq_exit(); \
|
|
preempt_count_sub(HARDIRQ_OFFSET); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Like __irq_exit() without time accounting
|
|
*/
|
|
#define __irq_exit_raw() \
|
|
do { \
|
|
lockdep_hardirq_exit(); \
|
|
preempt_count_sub(HARDIRQ_OFFSET); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Exit irq context and process softirqs if needed:
|
|
*/
|
|
void irq_exit(void);
|
|
|
|
/*
|
|
* Like irq_exit(), but return with RCU watching.
|
|
*/
|
|
void irq_exit_rcu(void);
|
|
|
|
#ifndef arch_nmi_enter
|
|
#define arch_nmi_enter() do { } while (0)
|
|
#define arch_nmi_exit() do { } while (0)
|
|
#endif
|
|
|
|
/*
|
|
* NMI vs Tracing
|
|
* --------------
|
|
*
|
|
* We must not land in a tracer until (or after) we've changed preempt_count
|
|
* such that in_nmi() becomes true. To that effect all NMI C entry points must
|
|
* be marked 'notrace' and call nmi_enter() as soon as possible.
|
|
*/
|
|
|
|
/*
|
|
* nmi_enter() can nest up to 15 times; see NMI_BITS.
|
|
*/
|
|
#define __nmi_enter() \
|
|
do { \
|
|
lockdep_off(); \
|
|
arch_nmi_enter(); \
|
|
BUG_ON(in_nmi() == NMI_MASK); \
|
|
__preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET); \
|
|
} while (0)
|
|
|
|
#define nmi_enter() \
|
|
do { \
|
|
__nmi_enter(); \
|
|
lockdep_hardirq_enter(); \
|
|
ct_nmi_enter(); \
|
|
instrumentation_begin(); \
|
|
ftrace_nmi_enter(); \
|
|
instrumentation_end(); \
|
|
} while (0)
|
|
|
|
#define __nmi_exit() \
|
|
do { \
|
|
BUG_ON(!in_nmi()); \
|
|
__preempt_count_sub(NMI_OFFSET + HARDIRQ_OFFSET); \
|
|
arch_nmi_exit(); \
|
|
lockdep_on(); \
|
|
} while (0)
|
|
|
|
#define nmi_exit() \
|
|
do { \
|
|
instrumentation_begin(); \
|
|
ftrace_nmi_exit(); \
|
|
instrumentation_end(); \
|
|
ct_nmi_exit(); \
|
|
lockdep_hardirq_exit(); \
|
|
__nmi_exit(); \
|
|
} while (0)
|
|
|
|
#endif /* LINUX_HARDIRQ_H */
|