diff options
Diffstat (limited to 'debian/patches-rt/0126-sched-cputime-Remove-symbol-exports-from-IRQ-time-ac.patch')
| -rw-r--r-- | debian/patches-rt/0126-sched-cputime-Remove-symbol-exports-from-IRQ-time-ac.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/debian/patches-rt/0126-sched-cputime-Remove-symbol-exports-from-IRQ-time-ac.patch b/debian/patches-rt/0126-sched-cputime-Remove-symbol-exports-from-IRQ-time-ac.patch new file mode 100644 index 000000000..3926556d0 --- /dev/null +++ b/debian/patches-rt/0126-sched-cputime-Remove-symbol-exports-from-IRQ-time-ac.patch @@ -0,0 +1,73 @@ +From d15b621168c7c422b8e43819c45aa749f3611fa6 Mon Sep 17 00:00:00 2001 +From: Frederic Weisbecker <frederic@kernel.org> +Date: Wed, 2 Dec 2020 12:57:28 +0100 +Subject: [PATCH 126/323] sched/cputime: Remove symbol exports from IRQ time + accounting +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +account_irq_enter_time() and account_irq_exit_time() are not called +from modules. EXPORT_SYMBOL_GPL() can be safely removed from the IRQ +cputime accounting functions called from there. + +Signed-off-by: Frederic Weisbecker <frederic@kernel.org> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Link: https://lore.kernel.org/r/20201202115732.27827-2-frederic@kernel.org +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + arch/s390/kernel/vtime.c | 10 +++++----- + kernel/sched/cputime.c | 2 -- + 2 files changed, 5 insertions(+), 7 deletions(-) + +diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c +index 579ec3a8c816..710135905deb 100644 +--- a/arch/s390/kernel/vtime.c ++++ b/arch/s390/kernel/vtime.c +@@ -227,7 +227,7 @@ void vtime_flush(struct task_struct *tsk) + * Update process times based on virtual cpu times stored by entry.S + * to the lowcore fields user_timer, system_timer & steal_clock. + */ +-void vtime_account_irq_enter(struct task_struct *tsk) ++void vtime_account_kernel(struct task_struct *tsk) + { + u64 timer; + +@@ -246,12 +246,12 @@ void vtime_account_irq_enter(struct task_struct *tsk) + + virt_timer_forward(timer); + } +-EXPORT_SYMBOL_GPL(vtime_account_irq_enter); +- +-void vtime_account_kernel(struct task_struct *tsk) +-__attribute__((alias("vtime_account_irq_enter"))); + EXPORT_SYMBOL_GPL(vtime_account_kernel); + ++void vtime_account_irq_enter(struct task_struct *tsk) ++__attribute__((alias("vtime_account_kernel"))); ++ ++ + /* + * Sorted add to a list. List is linear searched until first bigger + * element is found. +diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c +index ca0eef7d3852..e03568c5f584 100644 +--- a/kernel/sched/cputime.c ++++ b/kernel/sched/cputime.c +@@ -71,7 +71,6 @@ void irqtime_account_irq(struct task_struct *curr) + else if (in_serving_softirq() && curr != this_cpu_ksoftirqd()) + irqtime_account_delta(irqtime, delta, CPUTIME_SOFTIRQ); + } +-EXPORT_SYMBOL_GPL(irqtime_account_irq); + + static u64 irqtime_tick_accounted(u64 maxtime) + { +@@ -434,7 +433,6 @@ void vtime_account_irq_enter(struct task_struct *tsk) + else + vtime_account_kernel(tsk); + } +-EXPORT_SYMBOL_GPL(vtime_account_irq_enter); + #endif /* __ARCH_HAS_VTIME_ACCOUNT */ + + void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev, +-- +2.43.0 + |