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| author | Pravin B Shelar <pshelar@nicira.com> | 2011-11-10 19:14:51 -0800 |
|---|---|---|
| committer | Jesse Gross <jesse@nicira.com> | 2011-12-03 09:35:07 -0800 |
| commit | 86b1309c7e411b7c25dc0dc7a092582a4d291044 (patch) | |
| tree | b2557cbe0441d1d762e87a56e105bff6581c13e9 /net/netlink | |
| parent | 263ba61d3b19508dfb003c215ec5d23f882b4f87 (diff) | |
| download | linux-86b1309c7e411b7c25dc0dc7a092582a4d291044.tar.gz linux-86b1309c7e411b7c25dc0dc7a092582a4d291044.tar.bz2 linux-86b1309c7e411b7c25dc0dc7a092582a4d291044.zip | |
genetlink: Add lockdep_genl_is_held().
Open vSwitch uses genl_mutex locking to protect datapath
data-structures like flow-table, flow-actions. Following patch adds
lockdep_genl_is_held() which is used for rcu annotation to prove
locking.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 8a36599d3555..28453ae2a97b 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -33,6 +33,14 @@ void genl_unlock(void) } EXPORT_SYMBOL(genl_unlock); +#ifdef CONFIG_PROVE_LOCKING +int lockdep_genl_is_held(void) +{ + return lockdep_is_held(&genl_mutex); +} +EXPORT_SYMBOL(lockdep_genl_is_held); +#endif + #define GENL_FAM_TAB_SIZE 16 #define GENL_FAM_TAB_MASK (GENL_FAM_TAB_SIZE - 1) |