From cbd5a9c28bb5d2560be34fc6a2b6e60197628433 Mon Sep 17 00:00:00 2001 From: Georgi Djakov Date: Fri, 9 Aug 2019 15:13:24 +0300 Subject: [PATCH] interconnect: Add pre_aggregate() callback Introduce an optional callback in interconnect provider drivers. It can be used for implementing actions, that need to be executed before the actual aggregation of the bandwidth requests has started. The benefit of this for now is that it will significantly simplify the code in provider drivers. Suggested-by: Evan Green Reviewed-by: Evan Green Signed-off-by: Georgi Djakov --- drivers/interconnect/core.c | 3 +++ include/linux/interconnect-provider.h | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 251354b..7b97122 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -205,6 +205,9 @@ static int aggregate_requests(struct icc_node *node) node->avg_bw = 0; node->peak_bw = 0; + if (p->pre_aggregate) + p->pre_aggregate(node); + hlist_for_each_entry(r, &node->req_list, req_node) p->aggregate(node, r->tag, r->avg_bw, r->peak_bw, &node->avg_bw, &node->peak_bw); diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 4ee19fd..b16f9ef 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -36,6 +36,8 @@ struct icc_node *of_icc_xlate_onecell(struct of_phandle_args *spec, * @nodes: internal list of the interconnect provider nodes * @set: pointer to device specific set operation function * @aggregate: pointer to device specific aggregate operation function + * @pre_aggregate: pointer to device specific function that is called + * before the aggregation begins (optional) * @xlate: provider-specific callback for mapping nodes from phandle arguments * @dev: the device this interconnect provider belongs to * @users: count of active users @@ -47,6 +49,7 @@ struct icc_provider { int (*set)(struct icc_node *src, struct icc_node *dst); int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak); + void (*pre_aggregate)(struct icc_node *node); struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); struct device *dev; int users; -- 2.7.4