Messages in this thread Patch in this message | | | Date | Thu, 26 Aug 2010 08:19:55 -0500 | From | steiner@sgi ... | Subject | [Patch 18/25] GRU - contexts must contain cbrs |
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From: Jack Steiner <steiner@sgi.com>
Don't allow users to create GRU contexts with 0 CBRs. This does not make sense & is not allowed by the chiplet. The chiplet will flag this as an error and fail to allocate the context.
Signed-off-by: Jack Steiner <steiner@sgi.com>
--- drivers/misc/sgi-gru/grufile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/drivers/misc/sgi-gru/grufile.c =================================================================== --- linux.orig/drivers/misc/sgi-gru/grufile.c 2010-06-09 08:11:46.261068458 -0500 +++ linux/drivers/misc/sgi-gru/grufile.c 2010-06-09 08:11:47.151963284 -0500 @@ -175,7 +175,7 @@ static int gru_create_new_context(unsign if (req.data_segment_bytes > max_user_dsr_bytes) return -EINVAL; - if (req.control_blocks > max_user_cbrs || !req.maximum_thread_count) + if (req.control_blocks == 0 || req.control_blocks > max_user_cbrs || !req.maximum_thread_count) return -EINVAL; if (!(req.options & GRU_OPT_MISS_MASK))
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