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| author | Danilo Krummrich <dakr@kernel.org> | 2026-08-13 18:52:04 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-08-17 01:41:36 +0200 |
| commit | f146c7bc85a51f95c05e0f8173d484eb301ece78 (patch) | |
| tree | 07296ae54ed6551492b0c609dc0f5463f61f89ca /fs/dlm/memory.h | |
| download | linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.tar.gz linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.zip | |
PCI: Add pci_irq_type() to query the allocated interrupt typegrafted
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 <bhelgaas@google.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1]
Inspired-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
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 <dakr@kernel.org>
Diffstat (limited to 'fs/dlm/memory.h')
| -rw-r--r-- | fs/dlm/memory.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/dlm/memory.h b/fs/dlm/memory.h new file mode 100644 index 000000000..551b6b788 --- /dev/null +++ b/fs/dlm/memory.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/****************************************************************************** +******************************************************************************* +** +** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. +** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. +** +** +******************************************************************************* +******************************************************************************/ + +#ifndef __MEMORY_DOT_H__ +#define __MEMORY_DOT_H__ + +int dlm_memory_init(void); +void dlm_memory_exit(void); +struct dlm_rsb *dlm_allocate_rsb(void); +void dlm_free_rsb(struct dlm_rsb *r); +struct dlm_lkb *dlm_allocate_lkb(void); +void dlm_free_lkb(struct dlm_lkb *l); +char *dlm_allocate_lvb(struct dlm_ls *ls); +void dlm_free_lvb(char *l); +struct dlm_mhandle *dlm_allocate_mhandle(void); +void dlm_free_mhandle(struct dlm_mhandle *mhandle); +struct writequeue_entry *dlm_allocate_writequeue(void); +void dlm_free_writequeue(struct writequeue_entry *writequeue); +struct dlm_msg *dlm_allocate_msg(void); +void dlm_free_msg(struct dlm_msg *msg); +struct dlm_callback *dlm_allocate_cb(void); +void dlm_free_cb(struct dlm_callback *cb); + +#endif /* __MEMORY_DOT_H__ */ + |