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authorJuergen Gross <jgross@suse.com>2023-09-27 09:58:05 +0300
committerJuergen Gross <jgross@suse.com>2023-11-14 11:29:28 +0300
commit686464514fbebb6c8de4415238319e414c3500a4 (patch)
tree1ad5a92374fbe96df35603fd3ea31c8b5ce6b004 /drivers/xen/events
parentf96c6c588ca81255566a5168e51c9cbbe7b86def (diff)
downloadlinux-686464514fbebb6c8de4415238319e414c3500a4.tar.xz
xen/events: reduce externally visible helper functions
get_evtchn_to_irq() has only one external user while irq_from_evtchn() provides the same functionality and is exported for a wider user base. Modify the only external user of get_evtchn_to_irq() to use irq_from_evtchn() instead and make get_evtchn_to_irq() static. evtchn_from_irq() and irq_from_virq() have a single external user and can easily be combined to a new helper irq_evtchn_from_virq() allowing to drop irq_from_virq() and to make evtchn_from_irq() static. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen/events')
-rw-r--r--drivers/xen/events/events_2l.c8
-rw-r--r--drivers/xen/events/events_base.c13
-rw-r--r--drivers/xen/events/events_internal.h1
3 files changed, 13 insertions, 9 deletions
diff --git a/drivers/xen/events/events_2l.c b/drivers/xen/events/events_2l.c
index b8f2f971c2f0..e3585330cf98 100644
--- a/drivers/xen/events/events_2l.c
+++ b/drivers/xen/events/events_2l.c
@@ -171,11 +171,11 @@ static void evtchn_2l_handle_events(unsigned cpu, struct evtchn_loop_ctrl *ctrl)
int i;
struct shared_info *s = HYPERVISOR_shared_info;
struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu);
+ evtchn_port_t evtchn;
/* Timer interrupt has highest priority. */
- irq = irq_from_virq(cpu, VIRQ_TIMER);
+ irq = irq_evtchn_from_virq(cpu, VIRQ_TIMER, &evtchn);
if (irq != -1) {
- evtchn_port_t evtchn = evtchn_from_irq(irq);
word_idx = evtchn / BITS_PER_LONG;
bit_idx = evtchn % BITS_PER_LONG;
if (active_evtchns(cpu, s, word_idx) & (1ULL << bit_idx))
@@ -328,9 +328,9 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id)
for (i = 0; i < EVTCHN_2L_NR_CHANNELS; i++) {
if (sync_test_bit(i, BM(sh->evtchn_pending))) {
int word_idx = i / BITS_PER_EVTCHN_WORD;
- printk(" %d: event %d -> irq %d%s%s%s\n",
+ printk(" %d: event %d -> irq %u%s%s%s\n",
cpu_from_evtchn(i), i,
- get_evtchn_to_irq(i),
+ irq_from_evtchn(i),
sync_test_bit(word_idx, BM(&v->evtchn_pending_sel))
? "" : " l2-clear",
!sync_test_bit(i, BM(sh->evtchn_mask))
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index c5d86128eb73..a74ea28dcc3d 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -248,7 +248,7 @@ static int set_evtchn_to_irq(evtchn_port_t evtchn, unsigned int irq)
return 0;
}
-int get_evtchn_to_irq(evtchn_port_t evtchn)
+static int get_evtchn_to_irq(evtchn_port_t evtchn)
{
if (evtchn >= xen_evtchn_max_channels())
return -1;
@@ -415,7 +415,7 @@ static void xen_irq_info_cleanup(struct irq_info *info)
/*
* Accessors for packed IRQ information.
*/
-evtchn_port_t evtchn_from_irq(unsigned irq)
+static evtchn_port_t evtchn_from_irq(unsigned int irq)
{
const struct irq_info *info = NULL;
@@ -433,9 +433,14 @@ unsigned int irq_from_evtchn(evtchn_port_t evtchn)
}
EXPORT_SYMBOL_GPL(irq_from_evtchn);
-int irq_from_virq(unsigned int cpu, unsigned int virq)
+int irq_evtchn_from_virq(unsigned int cpu, unsigned int virq,
+ evtchn_port_t *evtchn)
{
- return per_cpu(virq_to_irq, cpu)[virq];
+ int irq = per_cpu(virq_to_irq, cpu)[virq];
+
+ *evtchn = evtchn_from_irq(irq);
+
+ return irq;
}
static enum ipi_vector ipi_from_irq(unsigned irq)
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h
index 4d3398eff9cd..19ae31695edc 100644
--- a/drivers/xen/events/events_internal.h
+++ b/drivers/xen/events/events_internal.h
@@ -33,7 +33,6 @@ struct evtchn_ops {
extern const struct evtchn_ops *evtchn_ops;
-int get_evtchn_to_irq(evtchn_port_t evtchn);
void handle_irq_for_port(evtchn_port_t port, struct evtchn_loop_ctrl *ctrl);
unsigned int cpu_from_evtchn(evtchn_port_t evtchn);