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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 /include/trace/events/vb2.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 'include/trace/events/vb2.h')
| -rw-r--r-- | include/trace/events/vb2.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/include/trace/events/vb2.h b/include/trace/events/vb2.h new file mode 100644 index 000000000..a40146dea --- /dev/null +++ b/include/trace/events/vb2.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM vb2 + +#if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_VB2_H + +#include <linux/tracepoint.h> +#include <media/videobuf2-core.h> + +DECLARE_EVENT_CLASS(vb2_event_class, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb), + + TP_STRUCT__entry( + __field(void *, owner) + __field(u32, queued_count) + __field(int, owned_by_drv_count) + __field(u32, index) + __field(u32, type) + __field(u32, bytesused) + __field(u64, timestamp) + ), + + TP_fast_assign( + __entry->owner = q->owner; + __entry->queued_count = q->queued_count; + __entry->owned_by_drv_count = + atomic_read(&q->owned_by_drv_count); + __entry->index = vb->index; + __entry->type = vb->type; + __entry->bytesused = vb->planes[0].bytesused; + __entry->timestamp = vb->timestamp; + ), + + TP_printk("owner = %p, queued = %u, owned_by_drv = %d, index = %u, " + "type = %u, bytesused = %u, timestamp = %llu", __entry->owner, + __entry->queued_count, + __entry->owned_by_drv_count, + __entry->index, __entry->type, + __entry->bytesused, + __entry->timestamp + ) +) + +DEFINE_EVENT(vb2_event_class, vb2_buf_done, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_buf_queue, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_dqbuf, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_qbuf, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +#endif /* if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |