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From: Samuel Thibault <sthibaul@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] mach: Use PAGE_SIZE Date: Sun, 19 Feb 2023 23:46:59 +0000 (GMT) [thread overview] Message-ID: <20230219234659.F23F13858D37@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=be318c0f38b6b72a0716edce818b755411e75600 commit be318c0f38b6b72a0716edce818b755411e75600 Author: Sergey Bugaev <bugaevc@gmail.com> Date: Sat Feb 18 23:37:14 2023 +0300 mach: Use PAGE_SIZE 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> Message-Id: <20230218203717.373211-7-bugaevc@gmail.com> Diff: --- 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 a0d9f7f5e2..42b9cacf68 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
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