From: Ben Gras <ben@minix3.org>
Date: Fri, 11 Feb 2011 14:56:52 +0000 (+0000)
Subject: vm: only suspend and resume process with vmctls in pt_writemap in smp mode
X-Git-Tag: v3.2.0~676
X-Git-Url: http://zhaoyanbai.com/repos/man.arpaname.html?a=commitdiff_plain;h=c7b2b11ec27d71dbf0af06a955f5b487551742aa;p=minix.git

vm: only suspend and resume process with vmctls in pt_writemap in smp mode
---

diff --git a/servers/vm/arch/i386/pagetable.c b/servers/vm/arch/i386/pagetable.c
index b07222c44..746e8e1bd 100644
--- a/servers/vm/arch/i386/pagetable.c
+++ b/servers/vm/arch/i386/pagetable.c
@@ -656,6 +656,7 @@ PUBLIC int pt_writemap(struct vmproc * vmp,
 	int verify = 0;
 	int ret = OK;
 
+#ifdef CONFIG_SMP
 	/* FIXME
 	 * don't do it everytime, stop the process only on the first change and
 	 * resume the execution on the last change. Do in a wrapper of this
@@ -664,6 +665,7 @@ PUBLIC int pt_writemap(struct vmproc * vmp,
 	if (vmp && vmp->vm_endpoint != NONE && vmp->vm_endpoint != VM_PROC_NR &&
 			!(vmp->vm_flags & VMF_EXITING))
 		sys_vmctl(vmp->vm_endpoint, VMCTL_VMINHIBIT_SET, 0);
+#endif
 
 	if(writemapflags & WMF_VERIFY)
 		verify = 1;
@@ -761,9 +763,11 @@ PUBLIC int pt_writemap(struct vmproc * vmp,
 
 resume_exit:
 
+#ifdef CONFIG_SMP
 	if (vmp && vmp->vm_endpoint != NONE && vmp->vm_endpoint != VM_PROC_NR &&
 			!(vmp->vm_flags & VMF_EXITING))
 		sys_vmctl(vmp->vm_endpoint, VMCTL_VMINHIBIT_CLEAR, 0);
+#endif
 
 	return ret;
 }