These 3 syscalls should now be ready to run w/o KERNEL_LOCK(). This
will reduce contention a lot. I'd be happy to hear from test reports
on many architectures and possible workloads.
Do not forget to run "make syscalls" before building the kernel.
Index: syscalls.master
===================================================================
RCS file: /cvs/src/sys/kern/syscalls.master,v
retrieving revision 1.234
diff -u -p -r1.234 syscalls.master
--- syscalls.master 25 Oct 2022 16:10:31 -0000 1.234
+++ syscalls.master 6 Nov 2022 10:50:45 -0000
@@ -126,7 +126,7 @@
struct sigaction *osa); }
47 STD NOLOCK { gid_t sys_getgid(void); }
48 STD NOLOCK { int sys_sigprocmask(int how, sigset_t mask); }
-49 STD { void *sys_mmap(void *addr, size_t len, int prot, \
+49 STD NOLOCK { void *sys_mmap(void *addr, size_t len, int prot, \
int flags, int fd, off_t pos); }
50 STD { int sys_setlogin(const char *namebuf); }
#ifdef ACCOUNTING
@@ -171,8 +171,8 @@
const struct kevent *changelist, int nchanges, \
struct kevent *eventlist, int nevents, \
const struct timespec *timeout); }
-73 STD { int sys_munmap(void *addr, size_t len); }
-74 STD { int sys_mprotect(void *addr, size_t len, \
+73 STD NOLOCK { int sys_munmap(void *addr, size_t len); }
+74 STD NOLOCK { int sys_mprotect(void *addr, size_t len, \
int prot); }
75 STD { int sys_madvise(void *addr, size_t len, \
int behav); }
