gru: dump chiplet state
Add support for dumpping the state of an entire GRU chiplet.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index ebf6183..d768f54 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -554,6 +554,12 @@
/* Lock hierarchy checking enabled only in emulator */
+/* 0 = lock failed, 1 = locked */
+static inline int __trylock_handle(void *h)
+{
+ return !test_and_set_bit(1, h);
+}
+
static inline void __lock_handle(void *h)
{
while (test_and_set_bit(1, h))
@@ -565,6 +571,11 @@
clear_bit(1, h);
}
+static inline int trylock_cch_handle(struct gru_context_configuration_handle *cch)
+{
+ return __trylock_handle(cch);
+}
+
static inline void lock_cch_handle(struct gru_context_configuration_handle *cch)
{
__lock_handle(cch);
@@ -606,6 +617,7 @@
extern void gru_tgh_flush_init(struct gru_state *gru);
extern int gru_kservices_init(struct gru_state *gru);
extern void gru_kservices_exit(struct gru_state *gru);
+extern int gru_dump_chiplet_request(unsigned long arg);
extern irqreturn_t gru_intr(int irq, void *dev_id);
extern int gru_handle_user_call_os(unsigned long address);
extern int gru_user_flush_tlb(unsigned long arg);