- Merge struct procsig with struct sigacts.

- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)

1 files changed, 3 insertions, 1 deletions

diff --git a/sys/netncp/ncp_ncp.c b/sys/netncp/ncp_ncp.c
index 0541793c0ff5..1d29afe2b329 100644
--- a/sys/netncp/ncp_ncp.c
+++ b/sys/netncp/ncp_ncp.c
@@ -88,7 +88,9 @@ ncp_chkintr(struct ncp_conn *conn, struct thread *td)
 	tmpset = p->p_siglist;
 	SIGSETOR(tmpset, td->td_siglist);
 	SIGSETNAND(tmpset, td->td_sigmask);
-	SIGSETNAND(tmpset, p->p_sigignore);
+	mtx_lock(&p->p_sigacts->ps_mtx);
+	SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
+	mtx_unlock(&p->p_sigacts->ps_mtx);
 	if (SIGNOTEMPTY(td->td_siglist) && NCP_SIGMASK(tmpset)) {
 		PROC_UNLOCK(p);
                 return EINTR;