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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2024-11-06 12:14:33 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-06 13:26:14 +0100 |
| commit | 4817754a18ef301adac4a13ba79e4f3dc3adbb74 (patch) | |
| tree | 1af4810d83132a707b5b52341cb6e66534ff473e /drivers/usb | |
| parent | xhci: Don't trace ring at every enqueue or dequeue increase (diff) | |
| download | linux-4817754a18ef301adac4a13ba79e4f3dc3adbb74.tar.gz linux-4817754a18ef301adac4a13ba79e4f3dc3adbb74.zip | |
xhci: add stream context tracing
Show stream id, stream context type (SCT), ring dequeue pointer and
the DMA address of the stream context during stream allocation
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20241106101459.775897-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 2 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-trace.h | 26 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
3 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index d2900197a49e..2952737ccf6c 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -658,6 +658,8 @@ struct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n", cur_stream, addr); ret = xhci_update_stream_mapping(cur_ring, mem_flags); + + trace_xhci_alloc_stream_info_ctx(stream_info, cur_stream); if (ret) { xhci_ring_free(xhci, cur_ring); stream_info->stream_rings[cur_stream] = NULL; diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index 57b8cb5a8d19..56af9f62916a 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -314,6 +314,32 @@ DEFINE_EVENT(xhci_log_urb, xhci_urb_dequeue, TP_ARGS(urb) ); +DECLARE_EVENT_CLASS(xhci_log_stream_ctx, + TP_PROTO(struct xhci_stream_info *info, unsigned int stream_id), + TP_ARGS(info, stream_id), + TP_STRUCT__entry( + __field(unsigned int, stream_id) + __field(u64, stream_ring) + __field(dma_addr_t, ctx_array_dma) + + ), + TP_fast_assign( + __entry->stream_id = stream_id; + __entry->stream_ring = le64_to_cpu(info->stream_ctx_array[stream_id].stream_ring); + __entry->ctx_array_dma = info->ctx_array_dma + stream_id * 16; + + ), + TP_printk("stream %u ctx @%pad: SCT %llu deq %llx", __entry->stream_id, + &__entry->ctx_array_dma, CTX_TO_SCT(__entry->stream_ring), + __entry->stream_ring + ) +); + +DEFINE_EVENT(xhci_log_stream_ctx, xhci_alloc_stream_info_ctx, + TP_PROTO(struct xhci_stream_info *info, unsigned int stream_id), + TP_ARGS(info, stream_id) +); + DECLARE_EVENT_CLASS(xhci_log_ep_ctx, TP_PROTO(struct xhci_ep_ctx *ctx), TP_ARGS(ctx), diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 7d81645c2c5d..89337562440b 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -554,6 +554,7 @@ struct xhci_stream_ctx { /* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */ #define SCT_FOR_CTX(p) (((p) & 0x7) << 1) +#define CTX_TO_SCT(p) (((p) >> 1) & 0x7) /* Secondary stream array type, dequeue pointer is to a transfer ring */ #define SCT_SEC_TR 0 /* Primary stream array type, dequeue pointer is to a transfer ring */ |