linux/include
Eric Dumazet 0870b0d8b3 net: busy-poll: use ktime_get_ns() instead of local_clock()
Typically, busy-polling durations are below 100 usec.

When/if the busy-poller thread migrates to another cpu,
local_clock() can be off by +/-2msec or more for small
values of HZ, depending on the platform.

Use ktimer_get_ns() to ensure deterministic behavior,
which is the whole point of busy-polling.

Fixes: 0602129286 ("net: add low latency socket poll")
Fixes: 9a3c71aa80 ("net: convert low latency sockets to sched_clock()")
Fixes: 3708983452 ("sched, net: Fixup busy_loop_us_clock()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20240827114916.223377-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-08-28 17:53:13 -07:00
..
acpi ACPICA: Add a depth argument to acpi_execute_reg_methods() 2024-08-13 13:44:57 +02:00
asm-generic runtime constants: deal with old decrepit linkers 2024-08-03 08:38:45 -07:00
clocksource
crypto
drm drm/buddy: Add start address support to trim function 2024-08-07 18:19:00 -04:00
dt-bindings I3C for 6.11 2024-07-27 10:53:06 -07:00
keys
kunit
kvm
linux Including fixes from bluetooth and netfilter. 2024-08-23 07:47:01 +08:00
math-emu
media
memory
misc
net net: busy-poll: use ktime_get_ns() instead of local_clock() 2024-08-28 17:53:13 -07:00
pcmcia
ras mm/memory-failure: remove obsolete MF_MSG_DIFFERENT_COMPOUND 2024-07-12 15:52:22 -07:00
rdma
rv
scsi Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
soc net: mscc: ocelot: treat 802.1ad tagged traffic as 802.1Q-untagged 2024-08-16 09:59:32 +01:00
sound ASoC: Fixes for v6.11 2024-08-09 09:58:07 +02:00
target
trace vfs-6.11-rc4.fixes 2024-08-14 09:06:28 -07:00
uapi Char/Misc fixes for 6.11-rc4 2024-08-18 10:16:34 -07:00
ufs scsi: ufs: core: Check LSDBS cap when !mcq 2024-07-15 22:51:06 -04:00
vdso Random number generator updates for Linux 6.11-rc1. 2024-07-24 10:29:50 -07:00
video
xen Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00