add profile flag.

1 files changed, 24 insertions, 2 deletions

diff --git a/fs.c b/fs.c
index df4de3f..011baf2 100644
--- a/fs.c
+++ b/fs.c
@@ -77,8 +77,9 @@ Memsubfont *memfont;
 Renderer *renderer;
 Client *clients;
 ulong nclients;
+int doprof;
 
-static LightSource light = {{0,100,100,1}, {1,1,1,1}, LIGHT_POINT};
+LightSource light = {{0,100,100,1}, {1,1,1,1}, LIGHT_POINT};
 
 static Client *getclient(ulong);
 
@@ -644,10 +645,27 @@ Srv fs = {
 	.end		= fsending,
 };
 
+static void
+confproc(void)
+{
+	char buf[64];
+	int fd;
+
+	snprint(buf, sizeof buf, "/proc/%d/ctl", getpid());
+	fd = open(buf, OWRITE);
+	if(fd < 0)
+		sysfatal("open: %r");
+
+	if(doprof)
+		fprint(fd, "profile\n");
+
+	close(fd);
+}
+
 void
 usage(void)
 {
-	fprint(2, "usage: %s [-D] [-s srvname] [-m mtpt]\n", argv0);
+	fprint(2, "usage: %s [-Dp] [-s srvname] [-m mtpt]\n", argv0);
 	exits("usage");
 }
 
@@ -663,6 +681,9 @@ threadmain(int argc, char *argv[])
 	case 'D':
 		chatty9p++;
 		break;
+	case 'p':
+		doprof++;
+		break;
 	case 's':
 		srvname = EARGF(usage());
 		break;
@@ -674,6 +695,7 @@ threadmain(int argc, char *argv[])
 	if(argc != 0)
 		usage();
 
+	confproc();
 	jefe = getuser();
 
 	if(memimageinit() != 0)