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| author | Joe Damato <jdamato@fastly.com> | 2024-10-02 00:13:27 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-03 16:13:46 -0700 |
| commit | 989867846f7ff2cfd931aa0c6134e71ab8716647 (patch) | |
| tree | fae1fd14886c15c508e3ff14e7b8cd4af53da9e3 /tools/perf/scripts/python | |
| parent | d07dceb91acc6b461c79723e3c90453e51bb501c (diff) | |
| download | linux-989867846f7ff2cfd931aa0c6134e71ab8716647.tar.gz linux-989867846f7ff2cfd931aa0c6134e71ab8716647.zip | |
ena: Link IRQs to NAPI instances
Link IRQs to NAPI instances with netif_napi_set_irq. This information
can be queried with the netdev-genl API. Note that the ENA device
appears to allocate an IRQ for management purposes which does not have a
NAPI associated with it; this commit takes this into consideration to
accurately construct a map between IRQs and NAPI instances.
Compare the output of /proc/interrupts for my ena device with the output of
netdev-genl after applying this patch:
$ cat /proc/interrupts | grep enp55s0 | cut -f1 --delimiter=':'
94
95
96
97
98
99
100
101
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/netdev.yaml \
--dump napi-get --json='{"ifindex": 2}'
[{'id': 8208, 'ifindex': 2, 'irq': 101},
{'id': 8207, 'ifindex': 2, 'irq': 100},
{'id': 8206, 'ifindex': 2, 'irq': 99},
{'id': 8205, 'ifindex': 2, 'irq': 98},
{'id': 8204, 'ifindex': 2, 'irq': 97},
{'id': 8203, 'ifindex': 2, 'irq': 96},
{'id': 8202, 'ifindex': 2, 'irq': 95},
{'id': 8201, 'ifindex': 2, 'irq': 94}]
Signed-off-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: David Arinzon <darinzon@amazon.com>
Link: https://patch.msgid.link/20241002001331.65444-2-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions