bnxt_en: replace PTP spinlock with seqlock

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We can see high contention on ptp_lock while doing RX timestamping
on high packet rates over several queues. Spinlock is not effecient
to protect timecounter for RX timestamps when reads are the most
usual operations and writes are only occasional. It's better to use
seqlock in such cases.

Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Link: https://patch.msgid.link/20241103215108.557531-2-vadfed@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Vadim Fedorenko 2024-11-03 13:51:08 -08:00 • committed by Jakub Kicinski

parent bb2ef9b92b

commit 6c0828d00f

3 changed files with 49 additions and 61 deletions

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19

drivers/net/ethernet/broadcom/bnxt/bnxt.c

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77

drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c

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14

drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h

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