linux/net
Linus Torvalds 4477b39c32 minmax: add a few more MIN_T/MAX_T users
Commit 3a7e02c040 ("minmax: avoid overly complicated constant
expressions in VM code") added the simpler MIN_T/MAX_T macros in order
to avoid some excessive expansion from the rather complicated regular
min/max macros.

The complexity of those macros stems from two issues:

 (a) trying to use them in situations that require a C constant
     expression (in static initializers and for array sizes)

 (b) the type sanity checking

and MIN_T/MAX_T avoids both of these issues.

Now, in the whole (long) discussion about all this, it was pointed out
that the whole type sanity checking is entirely unnecessary for
min_t/max_t which get a fixed type that the comparison is done in.

But that still leaves min_t/max_t unnecessarily complicated due to
worries about the C constant expression case.

However, it turns out that there really aren't very many cases that use
min_t/max_t for this, and we can just force-convert those.

This does exactly that.

Which in turn will then allow for much simpler implementations of
min_t()/max_t().  All the usual "macros in all upper case will evaluate
the arguments multiple times" rules apply.

We should do all the same things for the regular min/max() vs MIN/MAX()
cases, but that has the added complexity of various drivers defining
their own local versions of MIN/MAX, so that needs another level of
fixes first.

Link: https://lore.kernel.org/all/b47fad1d0cf8449886ad148f8c013dae@AcuMS.aculab.com/
Cc: David Laight <David.Laight@aculab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-07-28 13:41:14 -07:00
..
6lowpan
9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bpf
bridge
caif
can
ceph
core A lot of networking people were at a conference last week, busy 2024-07-25 13:32:25 -07:00
dcb
dccp
devlink
dns_resolver
dsa
ethernet
ethtool
handshake
hsr
ieee802154
ife
ipv4 minmax: add a few more MIN_T/MAX_T users 2024-07-28 13:41:14 -07:00
ipv6 minmax: add a few more MIN_T/MAX_T users 2024-07-28 13:41:14 -07:00
iucv
kcm
key
l2tp
l3mdev
lapb
llc
mac80211
mac802154
mctp
mpls
mptcp
ncsi
netfilter A lot of networking people were at a conference last week, busy 2024-07-25 13:32:25 -07:00
netlabel
netlink
netrom
nfc
nsh
openvswitch
packet
phonet
psample
qrtr
rds
rfkill
rose
rxrpc
sched
sctp
smc
strparser
sunrpc
switchdev
tipc A lot of networking people were at a conference last week, busy 2024-07-25 13:32:25 -07:00
tls
unix
vmw_vsock
wireless
x25
xdp xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len 2024-07-25 11:57:27 +02:00
xfrm
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c
sysctl_net.c