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devctl: Disable the boottime optimization of suppressing NOMATCH

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The usb bus code (uhub) doens't present the same information to devctl
as it does to the NOMATCH events it generats. As such, devmatch fails to
find USB devices on boot when NOMATCH events are optimized out. Since
the savings of boot time is relatively trivial for all but the most
demanding boot environments, disable it by default until this issue is
fixed.

Fixes: 6437872c1d
MFC After: 1 minute
Sponsored by:		Netflix
This commit is contained in:
Warner Losh 2024-05-18 07:07:16 -06:00
parent fb623aab39
commit 97aedd3395
1 changed files with 1 additions and 1 deletions
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2
sys/kern/kern_devctl.c
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@ -89,7 +89,7 @@ static int sysctl_devctl_queue(SYSCTL_HANDLER_ARGS);
static int devctl_queue_length = DEVCTL_DEFAULT_QUEUE_LEN;
SYSCTL_PROC(_hw_bus, OID_AUTO, devctl_queue, CTLTYPE_INT | CTLFLAG_RWTUN |
CTLFLAG_MPSAFE, NULL, 0, sysctl_devctl_queue, "I", "devctl queue length");
static bool nomatch_enabled = false;
static bool nomatch_enabled = true;
SYSCTL_BOOL(_hw_bus, OID_AUTO, devctl_nomatch_enabled, CTLFLAG_RWTUN,
&nomatch_enabled, 0, "enable nomatch events");