Date: Tue, 29 Sep 2020 18:06:02 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r366265 - head/sys/sys Message-ID: <202009291806.08TI62eE083160@repo.freebsd.org>
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Author: imp Date: Tue Sep 29 18:06:02 2020 New Revision: 366265 URL: https://svnweb.freebsd.org/changeset/base/366265 Log: Standalone SX shims Create a do-nothing version of SX locks. OpenZFS needs them. However, since the boot loader is single threaded, they can be nops. Modified: head/sys/sys/sx.h Modified: head/sys/sys/sx.h ============================================================================== --- head/sys/sys/sx.h Tue Sep 29 17:52:15 2020 (r366264) +++ head/sys/sys/sx.h Tue Sep 29 18:06:02 2020 (r366265) @@ -300,4 +300,26 @@ __sx_xunlock(struct sx *sx, struct thread *td, const c #endif /* _KERNEL */ +#ifdef _STANDALONE +/* since we have no threads in the boot loader, trivially implement no-op version */ +#define sx_xlock(s) (1) +#define sx_try_xlock(s) (1) +#define sx_xunlock(s) (1) +#define SX_DUPOK 0 +#define SX_NEW 0 +#define SX_NOWITNESS 0 + +static __inline void +sx_init_flags(struct sx *sx, const char *description, int opts) +{ + +} + +static __inline void +sx_destroy(struct sx *sx) +{ + +} +#endif /* _STANDALONE */ + #endif /* !_SYS_SX_H_ */
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