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net: Kconfig: discourage drop_monitor enablement 

Quoting Eric Dumazet:
"I do not understand the fascination with net/core/drop_monitor.c [..]
misses all the features, flexibility, scalability  that 'perf',
eBPF tracing, bpftrace, .... have today."

Reword DROP_MONITOR kconfig help text to clearly state that its not
related to perf-based drop monitoring and that its safe to disable
this unless support for the older netlink-based tools is needed.

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20251016115147.18503-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Florian Westphal 2025-10-16 13:51:47 +02:00 committed by Jakub Kicinski
parent 38f3cd3703
commit 2af8ff1e47
1 changed files with 4 additions and 4 deletions
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@ -400,15 +400,15 @@ config NET_PKTGEN
module will be called pktgen.
config NET_DROP_MONITOR
tristate "Network packet drop alerting service"
tristate "Legacy network packet drop alerting service"
depends on INET && TRACEPOINTS
help
This feature provides an alerting service to userspace in the
event that packets are discarded in the network stack. Alerts
are broadcast via netlink socket to any listening user space
process. If you don't need network drop alerts, or if you are ok
just checking the various proc files and other utilities for
drop statistics, say N here.
process. This feature is NOT related to "perf" based drop monitoring.
Say N here unless you need to support older userspace tools like
"dropwatch".
endmenu # Network testing