From: Georgi Djakov <georgi.djakov@linaro.org> To: linux-pm@vger.kernel.org Cc: daidavid1@codeaurora.org, vincent.guittot@linaro.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, evgreen@chromium.org, dianders@chromium.org, seansw@qti.qualcomm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v2 1/2] interconnect: Add support for path tags Date: Tue, 18 Jun 2019 12:17:23 +0300 [thread overview] Message-ID: <20190618091724.28232-2-georgi.djakov@linaro.org> (raw) In-Reply-To: <20190618091724.28232-1-georgi.djakov@linaro.org> Consumers may have use cases with different bandwidth requirements based on the system or driver state. The consumer driver can append a specific tag to the path and pass this information to the interconnect platform driver to do the aggregation based on this state. Introduce icc_set_tag() function that will allow the consumers to append an optional tag to each path. The aggregation of these tagged paths is platform specific. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> --- drivers/interconnect/core.c | 24 +++++++++++++++++++++++- drivers/interconnect/qcom/sdm845.c | 2 +- include/linux/interconnect-provider.h | 4 ++-- include/linux/interconnect.h | 5 +++++ 4 files changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 871eb4bc4efc..251354bb7fdc 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -29,6 +29,7 @@ static struct dentry *icc_debugfs_dir; * @req_node: entry in list of requests for the particular @node * @node: the interconnect node to which this constraint applies * @dev: reference to the device that sets the constraints + * @tag: path tag (optional) * @avg_bw: an integer describing the average bandwidth in kBps * @peak_bw: an integer describing the peak bandwidth in kBps */ @@ -36,6 +37,7 @@ struct icc_req { struct hlist_node req_node; struct icc_node *node; struct device *dev; + u32 tag; u32 avg_bw; u32 peak_bw; }; @@ -204,7 +206,7 @@ static int aggregate_requests(struct icc_node *node) node->peak_bw = 0; hlist_for_each_entry(r, &node->req_list, req_node) - p->aggregate(node, r->avg_bw, r->peak_bw, + p->aggregate(node, r->tag, r->avg_bw, r->peak_bw, &node->avg_bw, &node->peak_bw); return 0; @@ -385,6 +387,26 @@ struct icc_path *of_icc_get(struct device *dev, const char *name) } EXPORT_SYMBOL_GPL(of_icc_get); +/** + * icc_set_tag() - set an optional tag on a path + * @path: the path we want to tag + * @tag: the tag value + * + * This function allows consumers to append a tag to the requests associated + * with a path, so that a different aggregation could be done based on this tag. + */ +void icc_set_tag(struct icc_path *path, u32 tag) +{ + int i; + + if (!path) + return; + + for (i = 0; i < path->num_nodes; i++) + path->reqs[i].tag = tag; +} +EXPORT_SYMBOL_GPL(icc_set_tag); + /** * icc_set_bw() - set bandwidth constraints on an interconnect path * @path: reference to the path returned by icc_get() diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c index 4915b78da673..fb526004c82e 100644 --- a/drivers/interconnect/qcom/sdm845.c +++ b/drivers/interconnect/qcom/sdm845.c @@ -626,7 +626,7 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) bcm->dirty = false; } -static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, +static int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak) { size_t i; diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 63caccadc2db..4ee19fd41568 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -45,8 +45,8 @@ struct icc_provider { struct list_head provider_list; struct list_head nodes; int (*set)(struct icc_node *src, struct icc_node *dst); - int (*aggregate)(struct icc_node *node, u32 avg_bw, u32 peak_bw, - u32 *agg_avg, u32 *agg_peak); + int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw, + u32 peak_bw, u32 *agg_avg, u32 *agg_peak); struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); struct device *dev; int users; diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index dc25864755ba..d70a914cba11 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -30,6 +30,7 @@ struct icc_path *icc_get(struct device *dev, const int src_id, struct icc_path *of_icc_get(struct device *dev, const char *name); void icc_put(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); +void icc_set_tag(struct icc_path *path, u32 tag); #else @@ -54,6 +55,10 @@ static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) return 0; } +static inline void icc_set_tag(struct icc_path *path, u32 tag) +{ +} + #endif /* CONFIG_INTERCONNECT */ #endif /* __LINUX_INTERCONNECT_H */
WARNING: multiple messages have this Message-ID (diff)
From: Georgi Djakov <georgi.djakov@linaro.org> To: linux-pm@vger.kernel.org Cc: seansw@qti.qualcomm.com, linux-kernel@vger.kernel.org, daidavid1@codeaurora.org, dianders@chromium.org, evgreen@chromium.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/2] interconnect: Add support for path tags Date: Tue, 18 Jun 2019 12:17:23 +0300 [thread overview] Message-ID: <20190618091724.28232-2-georgi.djakov@linaro.org> (raw) In-Reply-To: <20190618091724.28232-1-georgi.djakov@linaro.org> Consumers may have use cases with different bandwidth requirements based on the system or driver state. The consumer driver can append a specific tag to the path and pass this information to the interconnect platform driver to do the aggregation based on this state. Introduce icc_set_tag() function that will allow the consumers to append an optional tag to each path. The aggregation of these tagged paths is platform specific. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> --- drivers/interconnect/core.c | 24 +++++++++++++++++++++++- drivers/interconnect/qcom/sdm845.c | 2 +- include/linux/interconnect-provider.h | 4 ++-- include/linux/interconnect.h | 5 +++++ 4 files changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 871eb4bc4efc..251354bb7fdc 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -29,6 +29,7 @@ static struct dentry *icc_debugfs_dir; * @req_node: entry in list of requests for the particular @node * @node: the interconnect node to which this constraint applies * @dev: reference to the device that sets the constraints + * @tag: path tag (optional) * @avg_bw: an integer describing the average bandwidth in kBps * @peak_bw: an integer describing the peak bandwidth in kBps */ @@ -36,6 +37,7 @@ struct icc_req { struct hlist_node req_node; struct icc_node *node; struct device *dev; + u32 tag; u32 avg_bw; u32 peak_bw; }; @@ -204,7 +206,7 @@ static int aggregate_requests(struct icc_node *node) node->peak_bw = 0; hlist_for_each_entry(r, &node->req_list, req_node) - p->aggregate(node, r->avg_bw, r->peak_bw, + p->aggregate(node, r->tag, r->avg_bw, r->peak_bw, &node->avg_bw, &node->peak_bw); return 0; @@ -385,6 +387,26 @@ struct icc_path *of_icc_get(struct device *dev, const char *name) } EXPORT_SYMBOL_GPL(of_icc_get); +/** + * icc_set_tag() - set an optional tag on a path + * @path: the path we want to tag + * @tag: the tag value + * + * This function allows consumers to append a tag to the requests associated + * with a path, so that a different aggregation could be done based on this tag. + */ +void icc_set_tag(struct icc_path *path, u32 tag) +{ + int i; + + if (!path) + return; + + for (i = 0; i < path->num_nodes; i++) + path->reqs[i].tag = tag; +} +EXPORT_SYMBOL_GPL(icc_set_tag); + /** * icc_set_bw() - set bandwidth constraints on an interconnect path * @path: reference to the path returned by icc_get() diff --git a/drivers/interconnect/qcom/sdm845.c b/drivers/interconnect/qcom/sdm845.c index 4915b78da673..fb526004c82e 100644 --- a/drivers/interconnect/qcom/sdm845.c +++ b/drivers/interconnect/qcom/sdm845.c @@ -626,7 +626,7 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) bcm->dirty = false; } -static int qcom_icc_aggregate(struct icc_node *node, u32 avg_bw, +static int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw, u32 peak_bw, u32 *agg_avg, u32 *agg_peak) { size_t i; diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 63caccadc2db..4ee19fd41568 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -45,8 +45,8 @@ struct icc_provider { struct list_head provider_list; struct list_head nodes; int (*set)(struct icc_node *src, struct icc_node *dst); - int (*aggregate)(struct icc_node *node, u32 avg_bw, u32 peak_bw, - u32 *agg_avg, u32 *agg_peak); + int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw, + u32 peak_bw, u32 *agg_avg, u32 *agg_peak); struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); struct device *dev; int users; diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index dc25864755ba..d70a914cba11 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -30,6 +30,7 @@ struct icc_path *icc_get(struct device *dev, const int src_id, struct icc_path *of_icc_get(struct device *dev, const char *name); void icc_put(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); +void icc_set_tag(struct icc_path *path, u32 tag); #else @@ -54,6 +55,10 @@ static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw) return 0; } +static inline void icc_set_tag(struct icc_path *path, u32 tag) +{ +} + #endif /* CONFIG_INTERCONNECT */ #endif /* __LINUX_INTERCONNECT_H */ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-06-18 9:17 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-18 9:17 [PATCH v2 0/2] interconnect: Add path tagging support Georgi Djakov 2019-06-18 9:17 ` Georgi Djakov 2019-06-18 9:17 ` Georgi Djakov [this message] 2019-06-18 9:17 ` [PATCH v2 1/2] interconnect: Add support for path tags Georgi Djakov 2019-07-11 17:06 ` Evan Green 2019-07-11 17:06 ` Evan Green 2019-06-18 9:17 ` [PATCH v2 2/2] interconnect: qcom: Add tagging and wake/sleep support for sdm845 Georgi Djakov 2019-06-18 9:17 ` Georgi Djakov 2019-07-11 17:06 ` Evan Green 2019-07-11 17:06 ` Evan Green 2019-07-15 23:34 ` David Dai 2019-07-15 23:34 ` David Dai 2019-07-16 20:15 ` Evan Green 2019-07-16 20:15 ` Evan Green 2019-07-18 17:59 ` David Dai 2019-07-18 17:59 ` David Dai 2019-07-30 22:54 ` Evan Green 2019-07-30 22:54 ` Evan Green 2019-07-31 0:37 ` David Dai 2019-07-31 0:37 ` David Dai 2019-07-31 19:06 ` Evan Green 2019-07-31 19:06 ` Evan Green 2019-08-02 16:22 ` Georgi Djakov 2019-08-02 16:22 ` Georgi Djakov 2019-08-05 15:33 ` [PATCH] interconnect: Add pre_aggregate() callback Georgi Djakov 2019-08-05 15:33 ` Georgi Djakov 2019-08-05 16:04 ` Evan Green 2019-08-05 16:04 ` Evan Green
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