| Message ID | 20230218203717.373211-7-bugaevc@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | More x86_64-gnu glibc work | expand |
Applied, thanks! Sergey Bugaev, le sam. 18 févr. 2023 23:37:14 +0300, a ecrit: > The PAGE_SIZE from the Mach headers statically defines the machine's > page size. There's no need to query it dynamically; furthermore, the > implementation of the vm_statistics () RPC unconditionally fills in > > pagesize = PAGE_SIZE; > > Not doing the extra RPC shaves off 2 RPCs from the start-up of every > process! > > Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> > --- > mach/mach_init.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/mach/mach_init.c b/mach/mach_init.c > index a0d9f7f5..42b9cacf 100644 > --- a/mach/mach_init.c > +++ b/mach/mach_init.c > @@ -17,6 +17,7 @@ > > #include <mach.h> > #include <mach/mig_support.h> > +#include <mach/vm_param.h> > #include <unistd.h> > > mach_port_t __mach_task_self_; > @@ -38,7 +39,10 @@ __mach_init (void) > __mach_host_self_ = (__mach_host_self) (); > __mig_init (0); > > -#ifdef HAVE_HOST_PAGE_SIZE > +#ifdef PAGE_SIZE > + __vm_page_size = PAGE_SIZE; > + (void) err; > +#elif defined (HAVE_HOST_PAGE_SIZE) > if (err = __host_page_size (__mach_host_self (), &__vm_page_size)) > _exit (err); > #else > -- > 2.39.2 > >
diff --git a/mach/mach_init.c b/mach/mach_init.c index a0d9f7f5..42b9cacf 100644 --- a/mach/mach_init.c +++ b/mach/mach_init.c @@ -17,6 +17,7 @@ #include <mach.h> #include <mach/mig_support.h> +#include <mach/vm_param.h> #include <unistd.h> mach_port_t __mach_task_self_; @@ -38,7 +39,10 @@ __mach_init (void) __mach_host_self_ = (__mach_host_self) (); __mig_init (0); -#ifdef HAVE_HOST_PAGE_SIZE +#ifdef PAGE_SIZE + __vm_page_size = PAGE_SIZE; + (void) err; +#elif defined (HAVE_HOST_PAGE_SIZE) if (err = __host_page_size (__mach_host_self (), &__vm_page_size)) _exit (err); #else
The PAGE_SIZE from the Mach headers statically defines the machine's page size. There's no need to query it dynamically; furthermore, the implementation of the vm_statistics () RPC unconditionally fills in pagesize = PAGE_SIZE; Not doing the extra RPC shaves off 2 RPCs from the start-up of every process! Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> --- mach/mach_init.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)