While intended for more architectures, DDBPROF is strictly amd64 and i386 only, so the machine-independent sys/conf/GENERIC does not seem fit (until all architectures are supported).
Index: conf/GENERIC =================================================================== RCS file: /cvs/src/sys/conf/GENERIC,v retrieving revision 1.281 diff -u -p -r1.281 GENERIC --- conf/GENERIC 23 Dec 2021 10:04:14 -0000 1.281 +++ conf/GENERIC 18 Jan 2022 04:28:29 -0000 @@ -4,7 +4,6 @@ # GENERIC kernel option DDB # in-kernel debugger -#option DDBPROF # ddb(4) based profiling #option DDB_SAFE_CONSOLE # allow break into ddb during boot #makeoptions DEBUG="" # do not compile full symbol table #makeoptions PROF="-pg" # build profiled kernel Index: arch/amd64/conf/GENERIC =================================================================== RCS file: /cvs/src/sys/arch/amd64/conf/GENERIC,v retrieving revision 1.510 diff -u -p -r1.510 GENERIC --- arch/amd64/conf/GENERIC 4 Jan 2022 05:50:43 -0000 1.510 +++ arch/amd64/conf/GENERIC 18 Jan 2022 04:28:04 -0000 @@ -13,6 +13,8 @@ machine amd64 include "../../../conf/GENERIC" maxusers 80 # estimated number of users +#option DDBPROF # ddb(4) based profiling + option USER_PCICONF # user-space PCI configuration option APERTURE # in-kernel aperture driver for XFree86 Index: arch/i386/conf/GENERIC =================================================================== RCS file: /cvs/src/sys/arch/i386/conf/GENERIC,v retrieving revision 1.860 diff -u -p -r1.860 GENERIC --- arch/i386/conf/GENERIC 2 Jan 2022 23:14:27 -0000 1.860 +++ arch/i386/conf/GENERIC 18 Jan 2022 04:28:26 -0000 @@ -13,6 +13,8 @@ machine i386 include "../../../conf/GENERIC" maxusers 80 # estimated number of users +#option DDBPROF # ddb(4) based profiling + option USER_PCICONF # user-space PCI configuration option APERTURE # in-kernel aperture driver for XFree86
