From f146c7bc85a51f95c05e0f8173d484eb301ece78 Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Thu, 13 Aug 2026 18:52:04 +0200 Subject: PCI: Add pci_irq_type() to query the allocated interrupt type Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX based on the interrupt type the PCI core selected after pci_alloc_irq_vectors(). Several drivers already open-code this check against pdev->msix_enabled and pdev->msi_enabled, or even open code this helper [1]. A common helper avoids the duplication and keeps drivers from accessing the bitfield directly (see also [2]). Acked-by: Bjorn Helgaas Tested-by: John Hubbard Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1] Inspired-by: John Hubbard Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2] Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org [ Add missing pci_irq_type() stub for CONFIG_PCI=n. ] Signed-off-by: Danilo Krummrich --- block/blk-mq-debugfs.h | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 block/blk-mq-debugfs.h (limited to 'block/blk-mq-debugfs.h') diff --git a/block/blk-mq-debugfs.h b/block/blk-mq-debugfs.h new file mode 100644 index 000000000..49bb1aaa8 --- /dev/null +++ b/block/blk-mq-debugfs.h @@ -0,0 +1,91 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef INT_BLK_MQ_DEBUGFS_H +#define INT_BLK_MQ_DEBUGFS_H + +#ifdef CONFIG_BLK_DEBUG_FS + +#include + +struct blk_mq_hw_ctx; + +struct blk_mq_debugfs_attr { + const char *name; + umode_t mode; + int (*show)(void *, struct seq_file *); + ssize_t (*write)(void *, const char __user *, size_t, loff_t *); + /* Set either .show or .seq_ops. */ + const struct seq_operations *seq_ops; +}; + +int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq); +int blk_mq_debugfs_rq_show(struct seq_file *m, void *v); + +void blk_mq_debugfs_register(struct request_queue *q); +void blk_mq_debugfs_register_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx); +void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx); +void blk_mq_debugfs_register_hctxs(struct request_queue *q); +void blk_mq_debugfs_unregister_hctxs(struct request_queue *q); + +void blk_mq_debugfs_register_sched(struct request_queue *q); +void blk_mq_debugfs_unregister_sched(struct request_queue *q); +void blk_mq_debugfs_register_sched_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx); +void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx); + +void blk_mq_debugfs_register_rq_qos(struct request_queue *q); +#else +static inline void blk_mq_debugfs_register(struct request_queue *q) +{ +} + +static inline void blk_mq_debugfs_register_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx) +{ +} + +static inline void blk_mq_debugfs_unregister_hctx(struct blk_mq_hw_ctx *hctx) +{ +} + +static inline void blk_mq_debugfs_register_hctxs(struct request_queue *q) +{ +} + +static inline void blk_mq_debugfs_unregister_hctxs(struct request_queue *q) +{ +} + +static inline void blk_mq_debugfs_register_sched(struct request_queue *q) +{ +} + +static inline void blk_mq_debugfs_unregister_sched(struct request_queue *q) +{ +} + +static inline void blk_mq_debugfs_register_sched_hctx(struct request_queue *q, + struct blk_mq_hw_ctx *hctx) +{ +} + +static inline void blk_mq_debugfs_unregister_sched_hctx(struct blk_mq_hw_ctx *hctx) +{ +} + +static inline void blk_mq_debugfs_register_rq_qos(struct request_queue *q) +{ +} + +#endif + +#if defined(CONFIG_BLK_DEV_ZONED) && defined(CONFIG_BLK_DEBUG_FS) +int queue_zone_wplugs_show(void *data, struct seq_file *m); +#else +static inline int queue_zone_wplugs_show(void *data, struct seq_file *m) +{ + return 0; +} +#endif + +#endif -- cgit v1.3.1