Implement the D "cpu" variable, which returns curcpu. I have chosen not

to follow the example of OpenSolaris and its descendants, which implemented
cpu as an inline that took a value out of curthread.  At certain points in
the FreeBSD scheduler curthread->td_oncpu will no longer be valid (in
particukar, just before the thread gets descheduled) so instead I have
implemented this as its own built-in variable.

Sponsored by:	Sandvine Inc.
MFC after:	1 week

1 files changed, 6 insertions, 0 deletions

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c
index 962da1a..e77952d 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c
@@ -497,6 +497,12 @@ static const dt_ident_t _dtrace_globals[] = {
 { "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME,
 	DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
 #endif
+
+#if !defined(sun)
+{ "cpu", DT_IDENT_SCALAR, 0, DIF_VAR_CPU,
+	DT_ATTR_STABCMN, DT_VERS_1_6_3, &dt_idops_type, "int" },
+#endif
+
 { NULL, 0, 0, 0, { 0, 0, 0 }, 0, NULL, NULL }
 };