From 6db20ea8d85064175c7ef594c433c6c2e6bbab83 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Thu, 17 May 2012 14:23:59 +0300 Subject: remoteproc: allocate vrings on demand, free when not needed Dynamically allocate the vrings' DMA when the remote processor is about to be powered on (i.e. when ->find_vqs() is invoked), and release them as soon as it is powered off (i.e. when ->del_vqs() is invoked). The obvious and immediate benefit is better memory utilization, since memory for the vrings is now only allocated when the relevant remote processor is used. Additionally, this approach also makes recovery of a (crashing) remote processor easier: one just needs to remove the relevant vdevs, and the entire vrings cleanup takes place automagically. Tested-by: Fernando Guzman Lugo Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/remoteproc_internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/remoteproc/remoteproc_internal.h') diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h index 9f336d6bdef3..f4957cfa0883 100644 --- a/drivers/remoteproc/remoteproc_internal.h +++ b/drivers/remoteproc/remoteproc_internal.h @@ -41,4 +41,6 @@ void rproc_create_debug_dir(struct rproc *rproc); void rproc_init_debugfs(void); void rproc_exit_debugfs(void); +void rproc_free_vring(struct rproc_vring *rvring); +int rproc_alloc_vring(struct rproc_vdev *rvdev, int i); #endif /* REMOTEPROC_INTERNAL_H */ -- cgit v1.2.3