Pavel Emelyanov wrote:
Cedric Le Goater wrote:
Cedric Le Goater wrote:
Serge E. Hallyn wrote:
Quoting Pavel Emelyanov (xemul@xxxxxxxxxx):
Hi, guys!
I've noticed that compiling out all the core related to
cloning and cleaning the new namespace saves us more than
a Kbyte (!) from the vmlinux.
add/remove: 19/0 grow/shrink: 6/6 up/down: 1532/-336 (1196)
function old new delta
copy_user_ns - 181 +181
copy_ipcs - 149 +149
copy_utsname - 120 +120
shm_exit_ns - 106 +106
sem_exit_ns - 106 +106
msg_exit_ns - 106 +106
freeary - 100 +100
release_uids - 95 +95
freeque - 92 +92
free_nsproxy 48 99 +51
__sem_init_ns - 45 +45
shm_init_ns - 42 +42
sem_init_ns - 42 +42
msg_init_ns - 42 +42
__shm_init_ns - 38 +38
create_new_namespaces 300 335 +35
__msg_init_ns - 31 +31
sysvipc_proc_release 5 35 +30
free_ipc_ns - 30 +30
do_shm_rmid - 29 +29
shm_release 18 39 +21
free_user_ns - 16 +16
sysvipc_proc_open 100 111 +11
do_shmat 778 787 +9
free_uts_ns - 5 +5
sys_shmctl 1934 1907 -27
msg_init 82 47 -35
shm_init 92 47 -45
sem_init 99 44 -55
sys_msgctl 1394 1311 -83
sys_semctl 2123 2032 -91
Since there already were some questions like "do I need it
on my cellphone?" in reply to pid namespaces patches and
so on, why don't we make ALL the namespaces cloning code
under the config option to make those people happy?
Here's the proposed patch.
How about a single config variable for all namespaces?
yes good idea.
oops, that done already in the patch : CONFIG_NAMESPACES
So... Acked-by: Serge E. Hallyn and Cedric Le Goater ? :)
That is a good idea, that will avoid to have the namespaces config all
around the menuconfig too.
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