4 * Implement the MP lock. Note that debug operations
6 #ifndef _SYS_MPLOCK2_H_
7 #define _SYS_MPLOCK2_H_
9 #include <machine/atomic.h>
10 #ifndef _SYS_THREAD_H_
11 #include <sys/thread.h>
13 #ifndef _SYS_GLOBALDATA_H_
14 #include <sys/globaldata.h>
20 * NOTE: try_mplock()/lwkt_trytoken() return non-zero on success.
22 #define get_mplock() lwkt_gettoken(&mp_token)
23 #define try_mplock() lwkt_trytoken(&mp_token)
24 #define rel_mplock() lwkt_reltoken(&mp_token)
25 #define get_mplock_count(td) lwkt_cnttoken(&mp_token, td)
27 void cpu_get_initial_mplock(void);
29 #define MP_LOCK_HELD() LWKT_TOKEN_HELD_EXCL(&mp_token)
30 #define ASSERT_MP_LOCK_HELD() ASSERT_LWKT_TOKEN_HELD_EXCL(&mp_token)
35 * UNI-PROCESSOR BUILD - Degenerate case macros
39 #define try_mplock() 1
40 #define owner_mplock() 0
41 #define MP_LOCK_HELD(gd) 1
42 #define ASSERT_MP_LOCK_HELD(td)