From 7ce17fe655b105092e5448edd7086a402c884573 Mon Sep 17 00:00:00 2001
From: Philip Homburg <philip@cs.vu.nl>
Date: Mon, 10 Jul 2006 12:44:43 +0000
Subject: [PATCH] Support for SI_CALL_STATS (counting systemcalls).

---
 servers/fs/main.c |  7 +++++++
 servers/fs/misc.c | 10 ++++++++++
 servers/pm/main.c |  7 +++++++
 servers/pm/misc.c | 10 ++++++++++
 4 files changed, 34 insertions(+)

diff --git a/servers/fs/main.c b/servers/fs/main.c
index f69cb8db8..59c9dfcba 100644
--- a/servers/fs/main.c
+++ b/servers/fs/main.c
@@ -33,6 +33,10 @@ struct super_block;		/* proto.h needs to know this */
 #include "param.h"
 #include "super.h"
 
+#if ENABLE_SYSCALL_STATS
+EXTERN unsigned long calls_stats[NCALLS];
+#endif
+
 FORWARD _PROTOTYPE( void fs_init, (void)				);
 FORWARD _PROTOTYPE( void get_work, (void)				);
 FORWARD _PROTOTYPE( void init_root, (void)				);
@@ -102,6 +106,9 @@ PUBLIC int main()
 		"FS, bad process, who = %d, call_nr = %d, endpt1 = %d\n",
 				 who_e, call_nr, m_in.endpt1);
 		} else {
+#if ENABLE_SYSCALL_STATS
+			calls_stats[call_nr]++;
+#endif
 			error = (*call_vec[call_nr])();
 		}
 
diff --git a/servers/fs/misc.c b/servers/fs/misc.c
index 40f77fcb5..bc2a81966 100644
--- a/servers/fs/misc.c
+++ b/servers/fs/misc.c
@@ -38,6 +38,10 @@
 #define CORE_NAME	"core"
 #define CORE_MODE	0777	/* mode to use on core image files */
 
+#if ENABLE_SYSCALL_STATS
+PUBLIC unsigned long calls_stats[NCALLS];
+#endif
+
 FORWARD _PROTOTYPE( void free_proc, (struct fproc *freed, int flags));
 FORWARD _PROTOTYPE( int dumpcore, (int proc_e, struct mem_map *seg_ptr));
 FORWARD _PROTOTYPE( int write_bytes, (struct inode *rip, off_t off,
@@ -80,6 +84,12 @@ PUBLIC int do_getsysinfo()
   	src_addr = (vir_bytes) dmap;
   	len = sizeof(struct dmap) * NR_DEVICES;
   	break; 
+#if ENABLE_SYSCALL_STATS
+  case SI_CALL_STATS:
+  	src_addr = (vir_bytes) calls_stats;
+  	len = sizeof(calls_stats);
+  	break; 
+#endif
   default:
   	return(EINVAL);
   }
diff --git a/servers/pm/main.c b/servers/pm/main.c
index 274b538f3..3f23a8566 100644
--- a/servers/pm/main.c
+++ b/servers/pm/main.c
@@ -29,6 +29,10 @@
 #include "../../kernel/type.h"
 #include "../../kernel/proc.h"
 
+#if ENABLE_SYSCALL_STATS
+EXTERN unsigned long calls_stats[NCALLS];
+#endif
+
 FORWARD _PROTOTYPE( void get_work, (void)				);
 FORWARD _PROTOTYPE( void pm_init, (void)				);
 FORWARD _PROTOTYPE( int get_nice_value, (int queue)			);
@@ -119,6 +123,9 @@ PUBLIC int main()
 		if ((unsigned) call_nr >= NCALLS) {
 			result = ENOSYS;
 		} else {
+#if ENABLE_SYSCALL_STATS
+			calls_stats[call_nr]++;
+#endif
 			result = (*call_vec[call_nr])();
 		}
 		break;
diff --git a/servers/pm/misc.c b/servers/pm/misc.c
index ca3d67f75..1c795fe4a 100644
--- a/servers/pm/misc.c
+++ b/servers/pm/misc.c
@@ -53,6 +53,10 @@ PRIVATE char *uts_tbl[] = {
   NULL,			/* No bus */			/* No bus */
 };
 
+#if ENABLE_SYSCALL_STATS
+PUBLIC unsigned long calls_stats[NCALLS];
+#endif
+
 /*===========================================================================*
  *				do_allocmem				     *
  *===========================================================================*/
@@ -256,6 +260,12 @@ PUBLIC int do_getsysinfo()
         src_addr = (vir_bytes) &loadinfo;
         len = sizeof(struct loadinfo);
         break;
+#if ENABLE_SYSCALL_STATS
+  case SI_CALL_STATS:
+  	src_addr = (vir_bytes) calls_stats;
+  	len = sizeof(calls_stats);
+  	break; 
+#endif
   default:
   	return(EINVAL);
   }
-- 
2.44.0