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qcacmn: add HI_TASKLET support for CE

Browse source 
Add HI_TASKLET support for CE, to improve priority
of CE tasklet higher than softirq, since CPU hogging
caused by RT thread.

Change-Id: I88fe8c048e908b9780745bb26b177acd2baf6a5c
CRs-Fixed: 2948946
This commit is contained in:
Vevek Venkatesan 2021-05-19 23:52:28 +05:30 • committed by Madan Koyyalamudi
commit 017eff6da0
4 changed files with 32 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

3
hif/src/ce/ce_api.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -437,6 +437,7 @@ void war_ce_src_ring_write_idx_set(struct hif_softc *scn,
#define CE_ATTR_DISABLE_INTR 0x08 /* no interrupt on copy completion */
#define CE_ATTR_ENABLE_POLL 0x10 /* poll for residue descriptors */
#define CE_ATTR_DIAG 0x20 /* Diag CE */
#define CE_ATTR_HI_TASKLET 0x80 /* HI_TASKLET CE */
/**
* struct CE_attr - Attributes of an instance of a Copy Engine

4
hif/src/ce/ce_assignment.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2014-2021 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -1311,7 +1311,7 @@ static struct CE_attr host_ce_config_wlan_qca6750[] = {
/* target->host HTT + HTC control */
{ /* CE1 */ CE_ATTR_FLAGS, 0, 0, 2048, 512, NULL,},
/* target->host WMI */
{ /* CE2 */ CE_ATTR_FLAGS, 0, 0, 2048, 32, NULL,},
{ /* CE2 */ CE_ATTR_FLAGS | CE_ATTR_HI_TASKLET, 0, 0, 2048, 32, NULL,},
/* host->target WMI */
{ /* CE3 */ CE_ATTR_FLAGS, 0, 32, 2048, 0, NULL,},
/* host->target HTT */

3
hif/src/ce/ce_main.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2021 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -147,6 +147,7 @@ struct ce_tasklet_entry {
struct tasklet_struct intr_tq;
enum ce_id_type ce_id;
bool inited;
bool hi_tasklet_ce;
void *hif_ce_state;
};

41
hif/src/ce/ce_tasklet.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2021 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -48,6 +48,20 @@ struct tasklet_work {
};
/**
* ce_tasklet_schedule() - schedule CE tasklet
* @tasklet_entry: ce tasklet entry
*
* Return: None
*/
static inline void ce_tasklet_schedule(struct ce_tasklet_entry *tasklet_entry)
{
if (tasklet_entry->hi_tasklet_ce)
tasklet_hi_schedule(&tasklet_entry->intr_tq);
else
tasklet_schedule(&tasklet_entry->intr_tq);
}
/**
* reschedule_ce_tasklet_work_handler() - reschedule work
* @work: struct work_struct
@ -73,7 +87,7 @@ static void reschedule_ce_tasklet_work_handler(struct work_struct *work)
return;
}
if (hif_ce_state->tasklets[ce_work->id].inited)
tasklet_schedule(&hif_ce_state->tasklets[ce_work->id].intr_tq);
ce_tasklet_schedule(&hif_ce_state->tasklets[ce_work->id]);
}
static struct tasklet_work tasklet_workers[CE_ID_MAX];
@ -127,17 +141,6 @@ void deinit_tasklet_workers(struct hif_opaque_softc *scn)
work_initialized = false;
}
/**
* ce_schedule_tasklet() - schedule ce tasklet
* @tasklet_entry: struct ce_tasklet_entry
*
* Return: N/A
*/
static inline void ce_schedule_tasklet(struct ce_tasklet_entry *tasklet_entry)
{
tasklet_schedule(&tasklet_entry->intr_tq);
}
#ifdef CE_TASKLET_DEBUG_ENABLE
/**
* hif_record_tasklet_exec_entry_ts() - Record ce tasklet execution
@ -418,7 +421,7 @@ static void ce_tasklet(unsigned long data)
hif_record_ce_desc_event(scn, tasklet_entry->ce_id,
HIF_CE_TASKLET_RESCHEDULE, NULL, NULL, -1, 0);
ce_schedule_tasklet(tasklet_entry);
ce_tasklet_schedule(tasklet_entry);
hif_latency_detect_tasklet_sched(scn, tasklet_entry);
return;
}
@ -445,12 +448,20 @@ static void ce_tasklet(unsigned long data)
void ce_tasklet_init(struct HIF_CE_state *hif_ce_state, uint32_t mask)
{
int i;
struct CE_attr *attr;
for (i = 0; i < CE_COUNT_MAX; i++) {
if (mask & (1 << i)) {
hif_ce_state->tasklets[i].ce_id = i;
hif_ce_state->tasklets[i].inited = true;
hif_ce_state->tasklets[i].hif_ce_state = hif_ce_state;
attr = &hif_ce_state->host_ce_config[i];
if (attr->flags & CE_ATTR_HI_TASKLET)
hif_ce_state->tasklets[i].hi_tasklet_ce = true;
else
hif_ce_state->tasklets[i].hi_tasklet_ce = false;
tasklet_init(&hif_ce_state->tasklets[i].intr_tq,
ce_tasklet,
(unsigned long)&hif_ce_state->tasklets[i]);
@ -648,7 +659,7 @@ static inline bool hif_tasklet_schedule(struct hif_opaque_softc *hif_ctx,
* in whunt, tasklet may run before finished hif_tasklet_schedule.
*/
hif_latency_detect_tasklet_sched(scn, tasklet_entry);
tasklet_schedule(&tasklet_entry->intr_tq);
ce_tasklet_schedule(tasklet_entry);
if (scn->ce_latency_stats)
hif_record_tasklet_sched_entry_ts(scn, tasklet_entry->ce_id);