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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-11 18:15:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-11 18:15:22 -0700
commit32bcbf8b6d09428907fd045a4ea90562ec7dc4a2 (patch)
tree5fe094aa94931f207307817c747fcc5935e2665c /drivers/soc/ti
parent721afaa2aeb860067decdddadc84ed16f42f2048 (diff)
parent32561354b16944e784e82a2011765c50e77e1c56 (diff)
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson: "This contains platform-related driver updates for ARM and ARM64. Highlights: - ARM SCMI (System Control & Management Interface) driver cleanups - Hisilicon support for LPC bus w/ ACPI - Reset driver updates for several platforms: Uniphier, - Rockchip power domain bindings and hardware descriptions for several SoCs. - Tegra memory controller reset improvements" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (59 commits) ARM: tegra: fix compile-testing PCI host driver soc: rockchip: power-domain: add power domain support for px30 dt-bindings: power: add binding for px30 power domains dt-bindings: power: add PX30 SoCs header for power-domain soc: rockchip: power-domain: add power domain support for rk3228 dt-bindings: power: add binding for rk3228 power domains dt-bindings: power: add RK3228 SoCs header for power-domain soc: rockchip: power-domain: add power domain support for rk3128 dt-bindings: power: add binding for rk3128 power domains dt-bindings: power: add RK3128 SoCs header for power-domain soc: rockchip: power-domain: add power domain support for rk3036 dt-bindings: power: add binding for rk3036 power domains dt-bindings: power: add RK3036 SoCs header for power-domain dt-bindings: memory: tegra: Remove Tegra114 SATA and AFI reset definitions memory: tegra: Remove Tegra114 SATA and AFI reset definitions memory: tegra: Register SMMU after MC driver became ready soc: mediatek: remove unneeded semicolon soc: mediatek: add a fixed wait for SRAM stable soc: mediatek: introduce a CAPS flag for scp_domain_data soc: mediatek: reuse regmap_read_poll_timeout helpers ...
Diffstat (limited to 'drivers/soc/ti')
-rw-r--r--drivers/soc/ti/knav_qmss.h14
-rw-r--r--drivers/soc/ti/knav_qmss_queue.c60
2 files changed, 48 insertions, 26 deletions
diff --git a/drivers/soc/ti/knav_qmss.h b/drivers/soc/ti/knav_qmss.h
index 56866ba4cfc4..3efc47e82973 100644
--- a/drivers/soc/ti/knav_qmss.h
+++ b/drivers/soc/ti/knav_qmss.h
@@ -19,6 +19,8 @@
#ifndef __KNAV_QMSS_H__
#define __KNAV_QMSS_H__
+#include <linux/percpu.h>
+
#define THRESH_GTE BIT(7)
#define THRESH_LT 0
@@ -162,11 +164,11 @@ struct knav_qmgr_info {
* notifies: notifier counts
*/
struct knav_queue_stats {
- atomic_t pushes;
- atomic_t pops;
- atomic_t push_errors;
- atomic_t pop_errors;
- atomic_t notifies;
+ unsigned int pushes;
+ unsigned int pops;
+ unsigned int push_errors;
+ unsigned int pop_errors;
+ unsigned int notifies;
};
/**
@@ -283,7 +285,7 @@ struct knav_queue_inst {
struct knav_queue {
struct knav_reg_queue __iomem *reg_push, *reg_pop, *reg_peek;
struct knav_queue_inst *inst;
- struct knav_queue_stats stats;
+ struct knav_queue_stats __percpu *stats;
knav_queue_notify_fn notifier_fn;
void *notifier_fn_arg;
atomic_t notifier_enabled;
diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c
index 419365a8d1c2..6755f2af5619 100644
--- a/drivers/soc/ti/knav_qmss_queue.c
+++ b/drivers/soc/ti/knav_qmss_queue.c
@@ -99,7 +99,7 @@ void knav_queue_notify(struct knav_queue_inst *inst)
continue;
if (WARN_ON(!qh->notifier_fn))
continue;
- atomic_inc(&qh->stats.notifies);
+ this_cpu_inc(qh->stats->notifies);
qh->notifier_fn(qh->notifier_fn_arg);
}
rcu_read_unlock();
@@ -230,6 +230,12 @@ static struct knav_queue *__knav_queue_open(struct knav_queue_inst *inst,
if (!qh)
return ERR_PTR(-ENOMEM);
+ qh->stats = alloc_percpu(struct knav_queue_stats);
+ if (!qh->stats) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
qh->flags = flags;
qh->inst = inst;
id = inst->id - inst->qmgr->start_queue;
@@ -245,13 +251,17 @@ static struct knav_queue *__knav_queue_open(struct knav_queue_inst *inst,
if (range->ops && range->ops->open_queue)
ret = range->ops->open_queue(range, inst, flags);
- if (ret) {
- devm_kfree(inst->kdev->dev, qh);
- return ERR_PTR(ret);
- }
+ if (ret)
+ goto err;
}
list_add_tail_rcu(&qh->list, &inst->handles);
return qh;
+
+err:
+ if (qh->stats)
+ free_percpu(qh->stats);
+ devm_kfree(inst->kdev->dev, qh);
+ return ERR_PTR(ret);
}
static struct knav_queue *
@@ -427,6 +437,12 @@ static void knav_queue_debug_show_instance(struct seq_file *s,
{
struct knav_device *kdev = inst->kdev;
struct knav_queue *qh;
+ int cpu = 0;
+ int pushes = 0;
+ int pops = 0;
+ int push_errors = 0;
+ int pop_errors = 0;
+ int notifies = 0;
if (!knav_queue_is_busy(inst))
return;
@@ -434,19 +450,22 @@ static void knav_queue_debug_show_instance(struct seq_file *s,
seq_printf(s, "\tqueue id %d (%s)\n",
kdev->base_id + inst->id, inst->name);
for_each_handle_rcu(qh, inst) {
- seq_printf(s, "\t\thandle %p: ", qh);
- seq_printf(s, "pushes %8d, ",
- atomic_read(&qh->stats.pushes));
- seq_printf(s, "pops %8d, ",
- atomic_read(&qh->stats.pops));
- seq_printf(s, "count %8d, ",
- knav_queue_get_count(qh));
- seq_printf(s, "notifies %8d, ",
- atomic_read(&qh->stats.notifies));
- seq_printf(s, "push errors %8d, ",
- atomic_read(&qh->stats.push_errors));
- seq_printf(s, "pop errors %8d\n",
- atomic_read(&qh->stats.pop_errors));
+ for_each_possible_cpu(cpu) {
+ pushes += per_cpu_ptr(qh->stats, cpu)->pushes;
+ pops += per_cpu_ptr(qh->stats, cpu)->pops;
+ push_errors += per_cpu_ptr(qh->stats, cpu)->push_errors;
+ pop_errors += per_cpu_ptr(qh->stats, cpu)->pop_errors;
+ notifies += per_cpu_ptr(qh->stats, cpu)->notifies;
+ }
+
+ seq_printf(s, "\t\thandle %p: pushes %8d, pops %8d, count %8d, notifies %8d, push errors %8d, pop errors %8d\n",
+ qh,
+ pushes,
+ pops,
+ knav_queue_get_count(qh),
+ notifies,
+ push_errors,
+ pop_errors);
}
}
@@ -563,6 +582,7 @@ void knav_queue_close(void *qhandle)
if (range->ops && range->ops->close_queue)
range->ops->close_queue(range, inst);
}
+ free_percpu(qh->stats);
devm_kfree(inst->kdev->dev, qh);
}
EXPORT_SYMBOL_GPL(knav_queue_close);
@@ -636,7 +656,7 @@ int knav_queue_push(void *qhandle, dma_addr_t dma,
val = (u32)dma | ((size / 16) - 1);
writel_relaxed(val, &qh->reg_push[0].ptr_size_thresh);
- atomic_inc(&qh->stats.pushes);
+ this_cpu_inc(qh->stats->pushes);
return 0;
}
EXPORT_SYMBOL_GPL(knav_queue_push);
@@ -674,7 +694,7 @@ dma_addr_t knav_queue_pop(void *qhandle, unsigned *size)
if (size)
*size = ((val & DESC_SIZE_MASK) + 1) * 16;
- atomic_inc(&qh->stats.pops);
+ this_cpu_inc(qh->stats->pops);
return dma;
}
EXPORT_SYMBOL_GPL(knav_queue_pop);