On Wed, Apr 06, 2016 at 03:42:20PM +0200, Michal Mazurek wrote:
> MPSAFE is never used, and doesn't look like it's even supported (no
> matching SY_MPSAFE anywhere).
SY_MPSAFE seems to be unused since it's introduction in 2007 and it
doesn't have any effect; ok natano@, if no one comes up with a reason to
keep this.
>
> Index: sys/kern/makesyscalls.sh
> ===================================================================
> RCS file: /cvs/src/sys/kern/makesyscalls.sh,v
> retrieving revision 1.11
> diff -u -p -r1.11 makesyscalls.sh
> --- sys/kern/makesyscalls.sh 27 Nov 2007 18:04:01 -0000 1.11
> +++ sys/kern/makesyscalls.sh 6 Apr 2016 12:53:28 -0000
> @@ -255,10 +255,6 @@ function parseline() {
> funcalias=""
> end=NF
> }
> - if ($f == "MPSAFE") { # allow MP-safe syscalls
> - sycall_flags = sprintf("SY_MPSAFE | %s", sycall_flags)
> - f++
> - }
> if ($f == "NOLOCK") { # syscall does not need locks
> sycall_flags = sprintf("SY_NOLOCK | %s", sycall_flags)
> f++
> Index: sys/sys/systm.h
> ===================================================================
> RCS file: /cvs/src/sys/sys/systm.h,v
> retrieving revision 1.111
> diff -u -p -r1.111 systm.h
> --- sys/sys/systm.h 24 Mar 2016 08:57:51 -0000 1.111
> +++ sys/sys/systm.h 6 Apr 2016 12:53:28 -0000
> @@ -112,8 +112,7 @@ extern struct sysent { /* system call t
> sy_call_t *sy_call; /* implementing function */
> } sysent[];
>
> -#define SY_MPSAFE 0x01
> -#define SY_NOLOCK 0x02
> +#define SY_NOLOCK 0x01
>
> #if _BYTE_ORDER == _BIG_ENDIAN
> #define SCARG(p, k) ((p)->k.be.datum) /* get arg from args pointer */
>
> --
> Michal Mazurek
>
