diff options
| author | Paul Moore <pmoore@redhat.com> | 2014-06-26 22:33:56 +0400 |
|---|---|---|
| committer | Paul Moore <pmoore@redhat.com> | 2014-06-26 22:33:56 +0400 |
| commit | 615e51fdda6f274e94b1e905fcaf6111e0d9aa20 (patch) | |
| tree | d0ce12f9f5e086c293a7255e3e712d2a42be02b9 /security/selinux/netnode.c | |
| parent | f31e799459659ae88c341aeac16a8a5efb1271d4 (diff) | |
| download | linux-615e51fdda6f274e94b1e905fcaf6111e0d9aa20.tar.xz | |
selinux: reduce the number of calls to synchronize_net() when flushing caches
When flushing the AVC, such as during a policy load, the various
network caches are also flushed, with each making a call to
synchronize_net() which has shown to be expensive in some cases.
This patch consolidates the network cache flushes into a single AVC
callback which only calls synchronize_net() once for each AVC cache
flush.
Reported-by: Jaejyn Shin <flagon22bass@gmail.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Diffstat (limited to 'security/selinux/netnode.c')
| -rw-r--r-- | security/selinux/netnode.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/security/selinux/netnode.c b/security/selinux/netnode.c index 03a72c32afd7..ddf315260839 100644 --- a/security/selinux/netnode.c +++ b/security/selinux/netnode.c @@ -283,7 +283,7 @@ int sel_netnode_sid(void *addr, u16 family, u32 *sid) * Remove all entries from the network address table. * */ -static void sel_netnode_flush(void) +void sel_netnode_flush(void) { unsigned int idx; struct sel_netnode *node, *node_tmp; @@ -300,15 +300,6 @@ static void sel_netnode_flush(void) spin_unlock_bh(&sel_netnode_lock); } -static int sel_netnode_avc_callback(u32 event) -{ - if (event == AVC_CALLBACK_RESET) { - sel_netnode_flush(); - synchronize_net(); - } - return 0; -} - static __init int sel_netnode_init(void) { int iter; @@ -322,10 +313,6 @@ static __init int sel_netnode_init(void) sel_netnode_hash[iter].size = 0; } - ret = avc_add_callback(sel_netnode_avc_callback, AVC_CALLBACK_RESET); - if (ret != 0) - panic("avc_add_callback() failed, error %d\n", ret); - return ret; } |