From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/arch/s390/kernel/vtime.c | 83 ++++++++++++++++++++++++++---------------
1 files changed, 52 insertions(+), 31 deletions(-)
diff --git a/kernel/arch/s390/kernel/vtime.c b/kernel/arch/s390/kernel/vtime.c
index f24395a..9b3c597 100644
--- a/kernel/arch/s390/kernel/vtime.c
+++ b/kernel/arch/s390/kernel/vtime.c
@@ -37,7 +37,7 @@
{
u64 timer;
- asm volatile("stpt %0" : "=m" (timer));
+ asm volatile("stpt %0" : "=Q" (timer));
return timer;
}
@@ -48,7 +48,7 @@
asm volatile(
" stpt %0\n" /* Store current cpu timer value */
" spt %1" /* Set new value imm. afterwards */
- : "=m" (timer) : "m" (expires));
+ : "=Q" (timer) : "Q" (expires));
S390_lowcore.system_timer += S390_lowcore.last_update_timer - timer;
S390_lowcore.last_update_timer = expires;
}
@@ -69,7 +69,7 @@
u64 delta, fac, mult, div;
int i;
- stcctm5(smp_cpu_mtid + 1, cycles_new);
+ stcctm(MT_DIAG, smp_cpu_mtid + 1, cycles_new);
cycles_old = this_cpu_ptr(mt_cycles);
fac = 1;
mult = div = 0;
@@ -124,7 +124,7 @@
*/
static int do_account_vtime(struct task_struct *tsk)
{
- u64 timer, clock, user, guest, system, hardirq, softirq, steal;
+ u64 timer, clock, user, guest, system, hardirq, softirq;
timer = S390_lowcore.last_update_timer;
clock = S390_lowcore.last_update_clock;
@@ -135,8 +135,9 @@
#else
" stck %1" /* Store current tod clock value */
#endif
- : "=m" (S390_lowcore.last_update_timer),
- "=m" (S390_lowcore.last_update_clock));
+ : "=Q" (S390_lowcore.last_update_timer),
+ "=Q" (S390_lowcore.last_update_clock)
+ : : "cc");
clock = S390_lowcore.last_update_clock - clock;
timer -= S390_lowcore.last_update_timer;
@@ -182,12 +183,6 @@
if (softirq)
account_system_index_scaled(tsk, softirq, CPUTIME_SOFTIRQ);
- steal = S390_lowcore.steal_timer;
- if ((s64) steal > 0) {
- S390_lowcore.steal_timer = 0;
- account_steal_time(cputime_to_nsecs(steal));
- }
-
return virt_timer_forward(user + guest + system + hardirq + softirq);
}
@@ -213,38 +208,64 @@
*/
void vtime_flush(struct task_struct *tsk)
{
+ u64 steal, avg_steal;
+
if (do_account_vtime(tsk))
virt_timer_expire();
+
+ steal = S390_lowcore.steal_timer;
+ avg_steal = S390_lowcore.avg_steal_timer / 2;
+ if ((s64) steal > 0) {
+ S390_lowcore.steal_timer = 0;
+ account_steal_time(cputime_to_nsecs(steal));
+ avg_steal += steal;
+ }
+ S390_lowcore.avg_steal_timer = avg_steal;
+}
+
+static u64 vtime_delta(void)
+{
+ u64 timer = S390_lowcore.last_update_timer;
+
+ S390_lowcore.last_update_timer = get_vtimer();
+
+ return timer - S390_lowcore.last_update_timer;
}
/*
* 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;
+ u64 delta = vtime_delta();
- timer = S390_lowcore.last_update_timer;
- S390_lowcore.last_update_timer = get_vtimer();
- timer -= S390_lowcore.last_update_timer;
-
- if ((tsk->flags & PF_VCPU) && (irq_count() == 0))
- S390_lowcore.guest_timer += timer;
- else if (hardirq_count())
- S390_lowcore.hardirq_timer += timer;
- else if (in_serving_softirq())
- S390_lowcore.softirq_timer += timer;
+ if (tsk->flags & PF_VCPU)
+ S390_lowcore.guest_timer += delta;
else
- S390_lowcore.system_timer += timer;
+ S390_lowcore.system_timer += delta;
- virt_timer_forward(timer);
+ virt_timer_forward(delta);
}
-EXPORT_SYMBOL_GPL(vtime_account_irq_enter);
+EXPORT_SYMBOL_GPL(vtime_account_kernel);
-void vtime_account_system(struct task_struct *tsk)
-__attribute__((alias("vtime_account_irq_enter")));
-EXPORT_SYMBOL_GPL(vtime_account_system);
+void vtime_account_softirq(struct task_struct *tsk)
+{
+ u64 delta = vtime_delta();
+
+ S390_lowcore.softirq_timer += delta;
+
+ virt_timer_forward(delta);
+}
+
+void vtime_account_hardirq(struct task_struct *tsk)
+{
+ u64 delta = vtime_delta();
+
+ S390_lowcore.hardirq_timer += delta;
+
+ virt_timer_forward(delta);
+}
/*
* Sorted add to a list. List is linear searched until first bigger
@@ -432,6 +453,6 @@
__this_cpu_write(mt_scaling_jiffies, jiffies);
__this_cpu_write(mt_scaling_mult, 1);
__this_cpu_write(mt_scaling_div, 1);
- stcctm5(smp_cpu_mtid + 1, this_cpu_ptr(mt_cycles));
+ stcctm(MT_DIAG, smp_cpu_mtid + 1, this_cpu_ptr(mt_cycles));
}
}
--
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