From: Ben Gras <ben@minix3.org>
Date: Wed, 1 Jun 2005 09:39:45 +0000 (+0000)
Subject: exec now uses phys_zero system call to zero bss segments (instead of
X-Git-Tag: v3.1.0~786
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/doc/syslog.3.html?a=commitdiff_plain;h=447b9881544560d9fc22287999849a648e8c3bc3;p=minix.git

exec now uses phys_zero system call to zero bss segments (instead of
using phys_copy to copy zeroes there for every kb), which is a big
optimisation in some cases

fixed a bug that was introduced when function keys became notifies
---

diff --git a/servers/pm/dmp.c b/servers/pm/dmp.c
index 2977cb55e..433bc1820 100644
--- a/servers/pm/dmp.c
+++ b/servers/pm/dmp.c
@@ -24,12 +24,21 @@ FORWARD _PROTOTYPE( void mproc_dmp, (void));
 PUBLIC int do_fkey_pressed(void)
 {
   printf("Process Manager debug dump: ");
-  switch (m_in.FKEY_CODE) {
+#if DEAD_CODE
+  switch (m_in.FKEY_NUM) {
+#else
+  switch (m_in.NOTIFY_FLAGS) {
+#endif
     	case SF7:	mproc_dmp();		break;
 
     	default:
+#if DEAD_CODE
     		printf("PM: unhandled notification for Shift+F%d key.\n",
     			m_in.FKEY_NUM);
+#else
+    		printf("PM: unhandled notification for Shift+F%d key.\n",
+    			m_in.NOTIFY_FLAGS);
+#endif
   }
 }
 
diff --git a/servers/pm/exec.c b/servers/pm/exec.c
index d0cdc7de3..7b6dfcaab 100644
--- a/servers/pm/exec.c
+++ b/servers/pm/exec.c
@@ -297,7 +297,6 @@ phys_bytes tot_bytes;		/* total memory to allocate, including gap */
   register struct mproc *rmp;
   vir_clicks text_clicks, data_clicks, gap_clicks, stack_clicks, tot_clicks;
   phys_clicks new_base;
-  static char zero[1024];		/* used to zero bss */
   phys_bytes bytes, base, count, bss_offset;
   int s;
 
@@ -372,7 +371,13 @@ phys_bytes tot_bytes;		/* total memory to allocate, including gap */
   base += bss_offset;
   bytes -= bss_offset;
 
+  if ((s=sys_physzero(base, bytes)) != OK) {
+	panic("new_mem can't zero", s);
+  }
+
+#if DEAD_CODE
   while (bytes > 0) {
+  	static char zero[1024];		/* used to zero bss */
 	count = MIN(bytes, (phys_bytes) sizeof(zero));
 	if ((s=sys_physcopy(PM_PROC_NR, D, (phys_bytes) zero,
 				NONE, PHYS_SEG, base, count)) != OK) {
@@ -381,6 +386,8 @@ phys_bytes tot_bytes;		/* total memory to allocate, including gap */
 	base += count;
 	bytes -= count;
   }
+#endif
+
   return(OK);
 }