mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 19:40:56 +07:00
607ca46e97
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
#ifndef __LINUX_GENERIC_NETLINK_H
|
|
#define __LINUX_GENERIC_NETLINK_H
|
|
|
|
#include <uapi/linux/genetlink.h>
|
|
|
|
|
|
/* All generic netlink requests are serialized by a global lock. */
|
|
extern void genl_lock(void);
|
|
extern void genl_unlock(void);
|
|
#ifdef CONFIG_LOCKDEP
|
|
extern int lockdep_genl_is_held(void);
|
|
#endif
|
|
|
|
/**
|
|
* rcu_dereference_genl - rcu_dereference with debug checking
|
|
* @p: The pointer to read, prior to dereferencing
|
|
*
|
|
* Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
|
|
* or genl mutex. Note : Please prefer genl_dereference() or rcu_dereference()
|
|
*/
|
|
#define rcu_dereference_genl(p) \
|
|
rcu_dereference_check(p, lockdep_genl_is_held())
|
|
|
|
/**
|
|
* genl_dereference - fetch RCU pointer when updates are prevented by genl mutex
|
|
* @p: The pointer to read, prior to dereferencing
|
|
*
|
|
* Return the value of the specified RCU-protected pointer, but omit
|
|
* both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
|
|
* caller holds genl mutex.
|
|
*/
|
|
#define genl_dereference(p) \
|
|
rcu_dereference_protected(p, lockdep_genl_is_held())
|
|
|
|
#define MODULE_ALIAS_GENL_FAMILY(family)\
|
|
MODULE_ALIAS_NET_PF_PROTO_NAME(PF_NETLINK, NETLINK_GENERIC, "-family-" family)
|
|
|
|
#endif /* __LINUX_GENERIC_NETLINK_H */
|