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Code Issues Releases Wiki Activity

remove workqueue and threaded interrupt modes, they are too laggy

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This commit is contained in:
rjkm 2021-09-19 19:05:05 +02:00
parent a3c6b5acc1
commit 719ac4d231
3 changed files with 0 additions and 71 deletions
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56
ddbridge/ddbridge-core.c
View File

@ -2336,15 +2336,9 @@ static void input_write_dvb(struct ddb_input *input,
}
}
#ifdef DDB_USE_WORK
static void input_work(struct work_struct *work)
{
struct ddb_dma *dma = container_of(work, struct ddb_dma, work);
#else
static void input_tasklet(unsigned long data)
{
struct ddb_dma *dma = (struct ddb_dma *)data;
#endif
struct ddb_input *input = (struct ddb_input *)dma->io;
struct ddb *dev = input->port->dev;
unsigned long flags;
@ -2377,17 +2371,10 @@ static void input_handler(unsigned long data)
* just copy pointers and ACK. So, there is no need to go
* through the tasklet scheduler.
*/
#ifdef DDB_USE_WORK
if (input->redi)
queue_work(ddb_wq, &dma->work);
else
input_work(&dma->work);
#else
if (input->redi)
tasklet_schedule(&dma->tasklet);
else
input_tasklet(data);
#endif
}
#else
@ -2396,23 +2383,13 @@ static void input_handler(void *data)
struct ddb_input *input = (struct ddb_input *)data;
struct ddb_dma *dma = input->dma;
#ifdef DDB_USE_WORK
queue_work(ddb_wq, &dma->work);
#else
input_tasklet((unsigned long)dma);
#endif
}
#endif
#ifdef DDB_USE_WORK
static void output_work(struct work_struct *work)
{
struct ddb_dma *dma = container_of(work, struct ddb_dma, work);
#else
static void output_tasklet(unsigned long data)
{
struct ddb_dma *dma = (struct ddb_dma *)data;
#endif
struct ddb_output *output = (struct ddb_output *)dma->io;
struct ddb *dev = output->port->dev;
unsigned long flags;
@ -2454,11 +2431,7 @@ static void output_handler(void *data)
struct ddb_output *output = (struct ddb_output *)data;
struct ddb_dma *dma = output->dma;
#ifdef DDB_USE_WORK
queue_work(ddb_wq, &dma->work);
#else
tasklet_schedule(&dma->tasklet);
#endif
}
#endif
@ -2489,11 +2462,7 @@ static void ddb_dma_init(struct ddb_io *io, int nr, int out, int irq_nr)
spin_lock_init(&dma->lock);
init_waitqueue_head(&dma->wq);
if (out) {
#ifdef DDB_USE_WORK
INIT_WORK(&dma->work, output_work);
#else
tasklet_init(&dma->tasklet, output_tasklet, (unsigned long)dma);
#endif
dma->regs = rm->odma->base + rm->odma->size * nr;
dma->bufregs = rm->odma_buf->base + rm->odma_buf->size * nr;
if (io->port->dev->link[0].info->type == DDB_MOD &&
@ -2507,11 +2476,7 @@ static void ddb_dma_init(struct ddb_io *io, int nr, int out, int irq_nr)
dma->div = 1;
}
} else {
#ifdef DDB_USE_WORK
INIT_WORK(&dma->work, input_work);
#else
tasklet_init(&dma->tasklet, input_tasklet, (unsigned long)dma);
#endif
dma->regs = rm->idma->base + rm->idma->size * nr;
dma->bufregs = rm->idma_buf->base + rm->idma_buf->size * nr;
dma->num = dma_buf_num;
@ -2705,21 +2670,12 @@ void ddb_ports_release(struct ddb *dev)
for (i = 0; i < dev->port_num; i++) {
port = &dev->port[i];
#ifdef DDB_USE_WORK
if (port->input[0] && port->input[0]->dma)
cancel_work_sync(&port->input[0]->dma->work);
if (port->input[1] && port->input[1]->dma)
cancel_work_sync(&port->input[1]->dma->work);
if (port->output && port->output->dma)
cancel_work_sync(&port->output->dma->work);
#else
if (port->input[0] && port->input[0]->dma)
tasklet_kill(&port->input[0]->dma->tasklet);
if (port->input[1] && port->input[1]->dma)
tasklet_kill(&port->input[1]->dma->tasklet);
if (port->output && port->output->dma)
tasklet_kill(&port->output->dma->tasklet);
#endif
}
}
@ -2823,9 +2779,6 @@ irqreturn_t ddb_irq_handler(int irq, void *dev_id)
irq_handle_msg(dev, s);
if (s & 0x0fffff00) {
irq_handle_io(dev, s);
#ifdef DDB_TEST_THREADED
ret = IRQ_WAKE_THREAD;
#endif
}
} while ((s = ddbreadl(dev, INTERRUPT_STATUS)));
@ -2873,15 +2826,6 @@ irqreturn_t ddb_irq_handler_v2(int irq, void *dev_id)
return ret;
}
#ifdef DDB_TEST_THREADED
static irqreturn_t irq_thread(int irq, void *dev_id)
{
/* struct ddb *dev = (struct ddb *) dev_id; */
return IRQ_HANDLED;
}
#endif
/****************************************************************************/
/****************************************************************************/
/****************************************************************************/

8
ddbridge/ddbridge-main.c
View File

@ -255,17 +255,9 @@ static int __devinit ddb_irq_init(struct ddb *dev)
return stat;
}
} else {
#ifdef DDB_TEST_THREADED
stat = request_threaded_irq(pci_irq_vector(dev->pdev, 0),
dev->pdev->irq, ddb_irq_handler,
irq_thread,
irq_flag,
"ddbridge", (void *)dev);
#else
stat = request_irq(pci_irq_vector(dev->pdev, 0),
ddb_irq_handler,
irq_flag, "ddbridge", (void *)dev);
#endif
if (stat < 0)
return stat;
}

7
ddbridge/ddbridge.h
View File

@ -23,9 +23,6 @@
#ifndef _DDBRIDGE_H_
#define _DDBRIDGE_H_
/* #define DDB_USE_WORK */
/*#define DDB_TEST_THREADED*/
#include <linux/version.h>
#if (KERNEL_VERSION(3, 8, 0) <= LINUX_VERSION_CODE)
@ -205,11 +202,7 @@ struct ddb_dma {
u32 div;
u32 bufval;
#ifdef DDB_USE_WORK
struct work_struct work;
#else
struct tasklet_struct tasklet;
#endif
spinlock_t lock; /* DMA lock */
wait_queue_head_t wq;
int running;