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adsprpc: set QoS only to silver cluster

Browse source 
Glink IRQ mostly is taken by the silver cluster. RPC driver vote
for sliver cluster prevents collapsing gold cluster. This saves
significant power.

Depends-On: I8ec5056ea6929d39e74b6e97114094da0a264edb
Change-Id: Ic24bddceb7ae37d1182d2fca683c622b4ab71a55
Acked-by: Tadakamalla Krishnaiah <ktadakam@qti.qualcomm.com>
Signed-off-by: Mohammed Nayeem Ur Rahman <mohara@codeaurora.org>
Signed-off-by: Edgar Flores <edgarf@codeaurora.org>
This commit is contained in:
Mohammed Nayeem Ur Rahman 2019-11-13 20:30:23 +05:30 • committed by Gerrit - the friendly Code Review server
commit 79a6b962f0
1 changed files with 90 additions and 12 deletions
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102
drivers/char/adsprpc.c
View file

@ -292,6 +292,11 @@ struct gid_list {
unsigned int gidcount;
};
struct qos_cores {
int *coreno;
int corecount;
};
struct fastrpc_file;
struct fastrpc_buf {
@ -456,6 +461,7 @@ struct fastrpc_apps {
/* Non-secure subsystem like CDSP will use regular client */
struct wakeup_source *wake_source;
uint32_t duplicate_rsp_err_cnt;
struct qos_cores silvercores;
};
struct fastrpc_mmap {
@ -540,7 +546,7 @@ struct fastrpc_file {
struct hlist_head perf;
struct dentry *debugfs_file;
struct mutex perf_mutex;
struct pm_qos_request pm_qos_req;
struct dev_pm_qos_request *dev_pm_qos_req;
int qos_request;
struct mutex map_mutex;
struct mutex internal_map_mutex;
@ -4738,6 +4744,7 @@ static int fastrpc_file_free(struct fastrpc_file *fl)
mutex_destroy(&fl->perf_mutex);
mutex_destroy(&fl->map_mutex);
mutex_destroy(&fl->internal_map_mutex);
kfree(fl->dev_pm_qos_req);
kfree(fl);
return 0;
}
@ -4745,14 +4752,23 @@ static int fastrpc_file_free(struct fastrpc_file *fl)
static int fastrpc_device_release(struct inode *inode, struct file *file)
{
struct fastrpc_file *fl = (struct fastrpc_file *)file->private_data;
struct fastrpc_apps *me = &gfa;
u32 ii;
if (fl) {
if (fl->qos_request && pm_qos_request_active(&fl->pm_qos_req))
pm_qos_remove_request(&fl->pm_qos_req);
debugfs_remove(fl->debugfs_file);
fastrpc_file_free(fl);
file->private_data = NULL;
if (!fl)
return 0;
if (fl->qos_request && fl->dev_pm_qos_req) {
for (ii = 0; ii < me->silvercores.corecount; ii++) {
if (!dev_pm_qos_request_active(&fl->dev_pm_qos_req[ii]))
continue;
dev_pm_qos_remove_request(&fl->dev_pm_qos_req[ii]);
}
}
debugfs_remove(fl->debugfs_file);
fastrpc_file_free(fl);
file->private_data = NULL;
return 0;
}
@ -5099,6 +5115,10 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp)
hlist_add_head(&fl->hn, &me->drivers);
spin_unlock(&me->hlock);
mutex_init(&fl->perf_mutex);
fl->dev_pm_qos_req = kcalloc(me->silvercores.corecount,
sizeof(struct dev_pm_qos_request),
GFP_KERNEL);
return 0;
}
@ -5215,6 +5235,8 @@ static int fastrpc_internal_control(struct fastrpc_file *fl,
{
int err = 0;
unsigned int latency;
struct fastrpc_apps *me = &gfa;
u32 silver_core_count = me->silvercores.corecount, ii = 0, cpu;
VERIFY(err, !IS_ERR_OR_NULL(fl) && !IS_ERR_OR_NULL(fl->apps));
if (err) {
@ -5236,12 +5258,33 @@ static int fastrpc_internal_control(struct fastrpc_file *fl,
err = -EINVAL;
goto bail;
}
if (!fl->qos_request) {
pm_qos_add_request(&fl->pm_qos_req,
PM_QOS_CPU_DMA_LATENCY, latency);
VERIFY(err, me->silvercores.coreno && fl->dev_pm_qos_req);
if (err)
goto bail;
for (ii = 0; ii < silver_core_count; ii++) {
cpu = me->silvercores.coreno[ii];
if (!fl->qos_request) {
err = dev_pm_qos_add_request(
get_cpu_device(cpu),
&fl->dev_pm_qos_req[ii],
DEV_PM_QOS_RESUME_LATENCY,
latency);
} else {
err = dev_pm_qos_update_request(
&fl->dev_pm_qos_req[ii],
latency);
}
if (err < 0) {
pr_warn("adsprpc: %s: %s: PM voting for cpu:%d failed, err %d, QoS update %d\n",
current->comm, __func__, cpu,
err, fl->qos_request);
break;
}
}
if (err >= 0)
fl->qos_request = 1;
} else
pm_qos_update_request(&fl->pm_qos_req, latency);
/* Ensure CPU feature map updated to DSP for early WakeUp */
fastrpc_send_cpuinfo_to_dsp(fl);
@ -6004,6 +6047,39 @@ bail:
}
}
static void init_qos_cores_list(struct device *dev, char *prop_name,
struct qos_cores *silvercores)
{
int err = 0;
u32 len = 0, i = 0;
u32 *coreslist = NULL;
if (!of_find_property(dev->of_node, prop_name, &len))
goto bail;
if (len == 0)
goto bail;
len /= sizeof(u32);
VERIFY(err, NULL != (coreslist = kcalloc(len, sizeof(u32),
GFP_KERNEL)));
if (err)
goto bail;
for (i = 0; i < len; i++) {
err = of_property_read_u32_index(dev->of_node, prop_name, i,
&coreslist[i]);
if (err) {
pr_err("adsprpc: %s: failed to read QOS cores list\n",
__func__);
goto bail;
}
}
silvercores->coreno = coreslist;
silvercores->corecount = len;
bail:
if (err) {
kfree(coreslist);
}
}
static void fastrpc_init_privileged_gids(struct device *dev, char *prop_name,
struct gid_list *gidlist)
{
@ -6102,6 +6178,8 @@ static int fastrpc_probe(struct platform_device *pdev)
&gcinfo[0].rhvm);
fastrpc_init_privileged_gids(dev, "qcom,fastrpc-gids",
&me->gidlist);
init_qos_cores_list(dev, "qcom,qos-cores",
&me->silvercores);
of_property_read_u32(dev->of_node, "qcom,rpc-latency-us",
&me->latency);