Remove kernel support for M:N threading.

While the KSE project was quite successful in bringing threading to
FreeBSD, the M:N approach taken by the kse library was never developed
to its full potential.  Backwards compatibility will be provided via
libmap.conf for dynamically linked binaries and static binaries will
be broken.

4 files changed, 10 insertions, 21 deletions

diff --git a/sys/fs/fifofs/fifo_vnops.c b/sys/fs/fifofs/fifo_vnops.c
index 10266b7..051b59b 100644
--- a/sys/fs/fifofs/fifo_vnops.c
+++ b/sys/fs/fifofs/fifo_vnops.c
@@ -43,7 +43,7 @@
 #include <sys/mutex.h>
 #include <sys/malloc.h>
 #include <sys/poll.h>
-#include <sys/proc.h> /* XXXKSE */
+#include <sys/proc.h>
 #include <sys/signalvar.h>
 #include <sys/socket.h>
 #include <sys/socketvar.h>
diff --git a/sys/fs/procfs/procfs_ctl.c b/sys/fs/procfs/procfs_ctl.c
index 89aa304..ca227e8 100644
--- a/sys/fs/procfs/procfs_ctl.c
+++ b/sys/fs/procfs/procfs_ctl.c
@@ -189,7 +189,7 @@ out:
 	/*
 	 * do single-step fixup if needed
 	 */
-	FIX_SSTEP(FIRST_THREAD_IN_PROC(p));	/* XXXKSE */
+	FIX_SSTEP(FIRST_THREAD_IN_PROC(p));
 #endif
 
 	/*
@@ -245,7 +245,7 @@ out:
 	 * What does it mean to single step a threaded program?
 	 */
 	case PROCFS_CTL_STEP:
-		error = proc_sstep(FIRST_THREAD_IN_PROC(p)); /* XXXKSE */
+		error = proc_sstep(FIRST_THREAD_IN_PROC(p));
 		PROC_UNLOCK(p);
 		if (error)
 			return (error);
@@ -335,14 +335,11 @@ procfs_doprocctl(PFS_FILL_ARGS)
 			printf("procfs: got a sig%s\n", sbuf_data(sb));
 			PROC_LOCK(p);
 
-			/* This is very broken XXXKSE: */
 			if (TRACE_WAIT_P(td->td_proc, p)) {
 				p->p_xstat = nm->nm_val;
 #ifdef FIX_SSTEP
-				/* XXXKSE: */
 				FIX_SSTEP(FIRST_THREAD_IN_PROC(p));
 #endif
-				/* XXXKSE: */
 				p->p_flag &= ~P_STOPPED_SIG;
 				PROC_SLOCK(p);
 				thread_unsuspend(p);
diff --git a/sys/fs/procfs/procfs_dbregs.c b/sys/fs/procfs/procfs_dbregs.c
index d985245..722e4cf 100644
--- a/sys/fs/procfs/procfs_dbregs.c
+++ b/sys/fs/procfs/procfs_dbregs.c
@@ -105,7 +105,6 @@ procfs_doprocdbregs(PFS_FILL_ARGS)
 		return (EPERM);
 	}
 
-	/* XXXKSE: */
 	td2 = FIRST_THREAD_IN_PROC(p);
 #ifdef COMPAT_IA32
 	if (td->td_proc->p_sysent == &ia32_freebsd_sysvec) {
diff --git a/sys/fs/procfs/procfs_status.c b/sys/fs/procfs/procfs_status.c
index 871d7fc..a1eefb4 100644
--- a/sys/fs/procfs/procfs_status.c
+++ b/sys/fs/procfs/procfs_status.c
@@ -112,20 +112,13 @@ procfs_doprocstatus(PFS_FILL_ARGS)
 		sbuf_printf(sb, "noflags");
 	}
 
-#ifdef KSE
-	if (p->p_flag & P_SA)
-		wmesg = "-kse- ";
-	else
-#endif
-	{
-		tdfirst = FIRST_THREAD_IN_PROC(p);
-		if (tdfirst->td_wchan != NULL) {
-			KASSERT(tdfirst->td_wmesg != NULL,
-			    ("wchan %p has no wmesg", tdfirst->td_wchan));
-			wmesg = tdfirst->td_wmesg;
-		} else
-			wmesg = "nochan";
-	}
+	tdfirst = FIRST_THREAD_IN_PROC(p);
+	if (tdfirst->td_wchan != NULL) {
+		KASSERT(tdfirst->td_wmesg != NULL,
+		    ("wchan %p has no wmesg", tdfirst->td_wchan));
+		wmesg = tdfirst->td_wmesg;
+	} else
+		wmesg = "nochan";
 
 	if (p->p_flag & P_INMEM) {
 		struct timeval start, ut, st;