diff options
Diffstat (limited to 'arch/powerpc/sysdev/xive/spapr.c')
| -rw-r--r-- | arch/powerpc/sysdev/xive/spapr.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c index 55dc61cb4867..7ab5c6780997 100644 --- a/arch/powerpc/sysdev/xive/spapr.c +++ b/arch/powerpc/sysdev/xive/spapr.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/libfdt.h> +#include <asm/machdep.h> #include <asm/prom.h> #include <asm/io.h> #include <asm/smp.h> @@ -560,11 +561,11 @@ static int xive_spapr_get_ipi(unsigned int cpu, struct xive_cpu *xc) static void xive_spapr_put_ipi(unsigned int cpu, struct xive_cpu *xc) { - if (!xc->hw_ipi) + if (xc->hw_ipi == XIVE_BAD_IRQ) return; xive_irq_bitmap_free(xc->hw_ipi); - xc->hw_ipi = 0; + xc->hw_ipi = XIVE_BAD_IRQ; } #endif /* CONFIG_SMP */ @@ -645,6 +646,21 @@ static void xive_spapr_sync_source(u32 hw_irq) plpar_int_sync(0, hw_irq); } +static int xive_spapr_debug_show(struct seq_file *m, void *private) +{ + struct xive_irq_bitmap *xibm; + char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + + list_for_each_entry(xibm, &xive_irq_bitmaps, list) { + memset(buf, 0, PAGE_SIZE); + bitmap_print_to_pagebuf(true, buf, xibm->bitmap, xibm->count); + seq_printf(m, "bitmap #%d: %s", xibm->count, buf); + } + kfree(buf); + + return 0; +} + static const struct xive_ops xive_spapr_ops = { .populate_irq_data = xive_spapr_populate_irq_data, .configure_irq = xive_spapr_configure_irq, @@ -662,6 +678,7 @@ static const struct xive_ops xive_spapr_ops = { #ifdef CONFIG_SMP .get_ipi = xive_spapr_get_ipi, .put_ipi = xive_spapr_put_ipi, + .debug_show = xive_spapr_debug_show, #endif /* CONFIG_SMP */ .name = "spapr", }; @@ -839,3 +856,5 @@ bool __init xive_spapr_init(void) pr_info("Using %dkB queues\n", 1 << (xive_queue_shift - 10)); return true; } + +machine_arch_initcall(pseries, xive_core_debug_init); |