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powerpc/xive: Simplify the dump of XIVE interrupts under xmon 

Move the xmon routine under XIVE subsystem and rework the loop on the
interrupts taking into account the xive_irq_domain to filter out IPIs.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210331144514.892250-7-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2021-03-31 16:45:11 +02:00 committed by Michael Ellerman
parent a74ce5926b
commit 6bf66eb8f4
3 changed files with 17 additions and 26 deletions
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1
arch/powerpc/include/asm/xive.h
View File

@ -102,6 +102,7 @@ void xive_flush_interrupt(void);
/* xmon hook */
void xmon_xive_do_dump(int cpu);
int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d);
void xmon_xive_get_irq_all(void);
/* APIs used by KVM */
u32 xive_native_default_eq_shift(void);

14
arch/powerpc/sysdev/xive/common.c
View File

@ -289,6 +289,20 @@ int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d)
return 0;
}
void xmon_xive_get_irq_all(void)
{
unsigned int i;
struct irq_desc *desc;
for_each_irq_desc(i, desc) {
struct irq_data *d = irq_desc_get_irq_data(desc);
unsigned int hwirq = (unsigned int)irqd_to_hwirq(d);
if (d->domain == xive_irq_domain)
xmon_xive_get_irq_config(hwirq, d);
}
}
#endif /* CONFIG_XMON */
static unsigned int xive_get_irq(void)

28
arch/powerpc/xmon/xmon.c
View File

@ -2727,30 +2727,6 @@ static void dump_all_xives(void)
dump_one_xive(cpu);
}
static void dump_one_xive_irq(u32 num, struct irq_data *d)
{
xmon_xive_get_irq_config(num, d);
}
static void dump_all_xive_irq(void)
{
unsigned int i;
struct irq_desc *desc;
for_each_irq_desc(i, desc) {
struct irq_data *d = irq_desc_get_irq_data(desc);
unsigned int hwirq;
if (!d)
continue;
hwirq = (unsigned int)irqd_to_hwirq(d);
/* IPIs are special (HW number 0) */
if (hwirq)
dump_one_xive_irq(hwirq, d);
}
}
static void dump_xives(void)
{
unsigned long num;
@ -2767,9 +2743,9 @@ static void dump_xives(void)
return;
} else if (c == 'i') {
if (scanhex(&num))
dump_one_xive_irq(num, NULL);
xmon_xive_get_irq_config(num, NULL);
else
dump_all_xive_irq();
xmon_xive_get_irq_all();
return;
}