[RFC PATCH 27/86] Revert "preempt/dynamic: Provide irqentry_exit_cond_resched() static call"

From: Ankur Arora
Date: Tue Nov 07 2023 - 17:03:03 EST


This reverts commit 40607ee97e4eec5655cc0f76a720bdc4c63a6434.

Signed-off-by: Ankur Arora <ankur.a.arora@xxxxxxxxxx>
---
include/linux/entry-common.h | 4 ----
kernel/entry/common.c | 10 +---------
2 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 49e9fe9489b6..fb2e349a17d2 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -2,7 +2,6 @@
#ifndef __LINUX_ENTRYCOMMON_H
#define __LINUX_ENTRYCOMMON_H

-#include <linux/static_call_types.h>
#include <linux/ptrace.h>
#include <linux/syscalls.h>
#include <linux/seccomp.h>
@@ -415,9 +414,6 @@ irqentry_state_t noinstr irqentry_enter(struct pt_regs *regs);
* Conditional reschedule with additional sanity checks.
*/
void irqentry_exit_cond_resched(void);
-#ifdef CONFIG_PREEMPT_DYNAMIC
-DECLARE_STATIC_CALL(irqentry_exit_cond_resched, irqentry_exit_cond_resched);
-#endif

/**
* irqentry_exit - Handle return from exception that used irqentry_enter()
diff --git a/kernel/entry/common.c b/kernel/entry/common.c
index d866c49dc015..194c349b8be7 100644
--- a/kernel/entry/common.c
+++ b/kernel/entry/common.c
@@ -388,9 +388,6 @@ void irqentry_exit_cond_resched(void)
preempt_schedule_irq();
}
}
-#ifdef CONFIG_PREEMPT_DYNAMIC
-DEFINE_STATIC_CALL(irqentry_exit_cond_resched, irqentry_exit_cond_resched);
-#endif

noinstr void irqentry_exit(struct pt_regs *regs, irqentry_state_t state)
{
@@ -417,13 +414,8 @@ noinstr void irqentry_exit(struct pt_regs *regs, irqentry_state_t state)
}

instrumentation_begin();
- if (IS_ENABLED(CONFIG_PREEMPTION)) {
-#ifdef CONFIG_PREEMT_DYNAMIC
- static_call(irqentry_exit_cond_resched)();
-#else
+ if (IS_ENABLED(CONFIG_PREEMPTION))
irqentry_exit_cond_resched();
-#endif
- }
/* Covers both tracing and lockdep */
trace_hardirqs_on();
instrumentation_end();
--
2.31.1