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| author | Jiri Slaby (SUSE) <jirislaby@kernel.org> | 2025-02-20 12:07:52 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-21 16:27:54 -0800 |
| commit | c180188ec02281126045414e90d08422a80f75b4 (patch) | |
| tree | cd0f4070a4eb4ea87c5c084a9398d46f7f951d5d /include/linux/fpga/fpga-bridge.h | |
| parent | 0e4427f8f587c4b603475468bb3aee9418574893 (diff) | |
net: set the minimum for net_hotdata.netdev_budget_usecs
Commit 7acf8a1e8a28 ("Replace 2 jiffies with sysctl netdev_budget_usecs
to enable softirq tuning") added a possibility to set
net_hotdata.netdev_budget_usecs, but added no lower bound checking.
Commit a4837980fd9f ("net: revert default NAPI poll timeout to 2 jiffies")
made the *initial* value HZ-dependent, so the initial value is at least
2 jiffies even for lower HZ values (2 ms for 1000 Hz, 8ms for 250 Hz, 20
ms for 100 Hz).
But a user still can set improper values by a sysctl. Set .extra1
(the lower bound) for net_hotdata.netdev_budget_usecs to the same value
as in the latter commit. That is to 2 jiffies.
Fixes: a4837980fd9f ("net: revert default NAPI poll timeout to 2 jiffies")
Fixes: 7acf8a1e8a28 ("Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning")
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Link: https://patch.msgid.link/20250220110752.137639-1-jirislaby@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/fpga/fpga-bridge.h')
0 files changed, 0 insertions, 0 deletions