kernel_optimize_test/security
Linus Torvalds a554bea899 selinux: don't inline slow-path code into avc_has_perm_noaudit()
The selinux AVC paths remain some of the hottest (and deepest) codepaths
at filename lookup time, and we make it worse by having the slow path
cases take up I$ and stack space even when they don't trigger.  Gcc
tends to always want to inline functions that are just called once -
never mind that this might make for slower and worse code in the caller.

So this tries to improve on it a bit by making the slow-path cases
explicitly separate functions that are marked noinline, causing gcc to
at least no longer allocate stack space for them unless they are
actually called.  It also seems to help register allocation a tiny bit,
since gcc now doesn't take the slow case code into account.

Uninlining the slow path may also allow us to inline the remaining hot
path into the one caller that actually matters: avc_has_perm_flags().
I'll have to look at that separately, but both avc_audit() and
avc_has_perm_noaudit() are now small and lean enough that inlining them
may make sense.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-31 11:24:22 -07:00
..
apparmor apparmor: Fix change_onexec when called from a confined task 2012-03-28 01:00:05 +11:00
integrity security: fix ima kconfig warning 2012-02-28 11:01:15 +11:00
keys usermodehelper: kill umh_wait, renumber UMH_* constants 2012-03-23 16:58:41 -07:00
selinux selinux: don't inline slow-path code into avc_has_perm_noaudit() 2012-03-31 11:24:22 -07:00
smack security: trim security.h 2012-02-14 10:45:42 +11:00
tomoyo usermodehelper: use UMH_WAIT_PROC consistently 2012-03-23 16:58:41 -07:00
yama Yama: add PR_SET_PTRACER_ANY 2012-02-16 10:25:18 +11:00
capability.c security: create task_free security callback 2012-02-10 09:14:51 +11:00
commoncap.c security: trim security.h 2012-02-14 10:45:42 +11:00
device_cgroup.c cgroup: remove cgroup_subsys argument from callbacks 2012-02-02 09:20:22 -08:00
inode.c securityfs: fix object creation races 2012-01-10 10:20:35 -05:00
Kconfig security: Yama LSM 2012-02-10 09:18:52 +11:00
lsm_audit.c switch unix_sock to struct path 2012-03-20 21:29:41 -04:00
Makefile security: Yama LSM 2012-02-10 09:18:52 +11:00
min_addr.c
security.c security: trim security.h 2012-02-14 10:45:42 +11:00