[MIPS] RP: Sysfs interface for stopping RP program

The old method of attempting to load a invalid program was just too icky.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 1323cb6d058..3c09b9785f4 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -1340,6 +1340,23 @@ static void kspd_sp_exit( int sp_id)
 }
 #endif
 
+static ssize_t store_kill(struct class_device *dev, const char *buf, size_t len)
+{
+        struct vpe *vpe = get_vpe(tclimit);
+        struct vpe_notifications *not;
+
+        list_for_each_entry(not, &vpe->notify, list) {
+                not->stop(tclimit);
+        }
+
+        release_progmem(vpe->load_addr);
+        cleanup_tc(get_tc(tclimit));
+        vpe_stop(vpe);
+        vpe_free(vpe);
+
+        return len;
+}
+
 static ssize_t show_ntcs(struct class_device *cd, char *buf)
 {
         struct vpe *vpe = get_vpe(tclimit);
@@ -1369,6 +1386,7 @@ out_einval:
 }
 
 static struct class_device_attribute vpe_class_attributes[] = {
+        __ATTR(kill, S_IWUSR, NULL, store_kill),
         __ATTR(ntcs, S_IRUGO | S_IWUSR, show_ntcs, store_ntcs),
         {}
 };