[PATCH] conversion to bio batch completion

From: Asai Thambi S P
Date: Tue Feb 26 2013 - 13:45:44 EST

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Hi Jens,

This patch is for linux-next, applies cleanly on for-next branch.

This patch contains the following:
* changes for conversion to bio batch completion from Kent
* fix to apply the above changes cleanly on latest mtip32xx code
* batch bio completion changes in
* mtip_command_cleanup()
* mtip_timeout_function()
* mtip_handle_tfe()

Signed-off-by: Kent Overstreet <koverstreet@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Asai Thambi S P <asamymuthupa@xxxxxxxxxx>
---
drivers/block/mtip32xx/mtip32xx.c | 86 ++++++++++++++++++++----------------
drivers/block/mtip32xx/mtip32xx.h | 8 +--
2 files changed, 51 insertions(+), 43 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 11cc952..22d2b0f 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -146,6 +146,9 @@ static void mtip_command_cleanup(struct driver_data *dd)
struct mtip_cmd *command;
struct mtip_port *port = dd->port;
static int in_progress;
+ struct batch_complete batch;
+
+ batch_complete_init(&batch);

if (in_progress)
return;
@@ -161,11 +164,9 @@ static void mtip_command_cleanup(struct driver_data *dd)
command = &port->commands[commandindex];

if (atomic_read(&command->active)
- && (command->async_callback)) {
- command->async_callback(command->async_data,
- -ENODEV);
- command->async_callback = NULL;
- command->async_data = NULL;
+ && (command->bio)) {
+ bio_endio_batch(command->bio, -ENODEV, &batch);
+ command->bio = NULL;
}

dma_unmap_sg(&port->dd->pdev->dev,
@@ -173,9 +174,10 @@ static void mtip_command_cleanup(struct driver_data *dd)
command->scatter_ents,
command->direction);
}
+ up(&port->cmd_slot);
}

- up(&port->cmd_slot);
+ batch_complete(&batch);

set_bit(MTIP_DDF_CLEANUP_BIT, &dd->dd_flag);
in_progress = 0;
@@ -564,6 +566,9 @@ static void mtip_timeout_function(unsigned long int data)
unsigned int bit, group;
unsigned int num_command_slots;
unsigned long to, tagaccum[SLOTBITS_IN_LONGS];
+ struct batch_complete batch;
+
+ batch_complete_init(&batch);

if (unlikely(!port))
return;
@@ -606,11 +611,9 @@ static void mtip_timeout_function(unsigned long int data)
writel(1 << bit, port->completed[group]);

/* Call the async completion callback. */
- if (likely(command->async_callback))
- command->async_callback(command->async_data,
- -EIO);
- command->async_callback = NULL;
- command->comp_func = NULL;
+ if (likely(command->bio))
+ bio_endio_batch(command->bio, -EIO, &batch);
+ command->bio = NULL;

/* Unmap the DMA scatter list entries */
dma_unmap_sg(&port->dd->pdev->dev,
@@ -628,6 +631,8 @@ static void mtip_timeout_function(unsigned long int data)
up(&port->cmd_slot);
}
}
+
+ batch_complete(&batch);

if (cmdto_cnt) {
print_tags(port->dd, "timed out", tagaccum, cmdto_cnt);
@@ -679,7 +684,8 @@ static void mtip_timeout_function(unsigned long int data)
static void mtip_async_complete(struct mtip_port *port,
int tag,
void *data,
- int status)
+ int status,
+ struct batch_complete *batch)
{
struct mtip_cmd *command;
struct driver_data *dd = data;
@@ -696,11 +702,10 @@ static void mtip_async_complete(struct mtip_port *port,
}

/* Upper layer callback */
- if (likely(command->async_callback))
- command->async_callback(command->async_data, cb_status);
+ if (likely(command->bio))
+ bio_endio_batch(command->bio, cb_status, batch);

- command->async_callback = NULL;
- command->comp_func = NULL;
+ command->bio = NULL;

/* Unmap the DMA scatter list entries */
dma_unmap_sg(&dd->pdev->dev,
@@ -733,24 +738,22 @@ static void mtip_async_complete(struct mtip_port *port,
static void mtip_completion(struct mtip_port *port,
int tag,
void *data,
- int status)
+ int status,
+ struct batch_complete *batch)
{
- struct mtip_cmd *command = &port->commands[tag];
struct completion *waiting = data;
if (unlikely(status == PORT_IRQ_TF_ERR))
dev_warn(&port->dd->pdev->dev,
"Internal command %d completed with TFE\n", tag);

- command->async_callback = NULL;
- command->comp_func = NULL;
-
complete(waiting);
}

static void mtip_null_completion(struct mtip_port *port,
int tag,
void *data,
- int status)
+ int status,
+ struct batch_complete *batch)
{
return;
}
@@ -779,6 +782,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
unsigned char *buf;
char *fail_reason = NULL;
int fail_all_ncq_write = 0, fail_all_ncq_cmds = 0;
+ struct batch_complete batch;

dev_warn(&dd->pdev->dev, "Taskfile error\n");

@@ -796,13 +800,14 @@ static void mtip_handle_tfe(struct driver_data *dd)
atomic_inc(&cmd->active); /* active > 1 indicates error */
if (cmd->comp_data && cmd->comp_func) {
cmd->comp_func(port, MTIP_TAG_INTERNAL,
- cmd->comp_data, PORT_IRQ_TF_ERR);
+ cmd->comp_data, PORT_IRQ_TF_ERR, NULL);
}
goto handle_tfe_exit;
}

/* clear the tag accumulator */
memset(tagaccum, 0, SLOTBITS_IN_LONGS * sizeof(long));
+ batch_complete_init(&batch);

/* Loop through all the groups */
for (group = 0; group < dd->slot_groups; group++) {
@@ -829,7 +834,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
cmd->comp_func(port,
tag,
cmd->comp_data,
- 0);
+ 0, &batch);
} else {
dev_err(&port->dd->pdev->dev,
"Missing completion func for tag %d",
@@ -842,6 +847,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
}
}
}
+ batch_complete(&batch);

print_tags(dd, "completed (TFE)", tagaccum, cmd_cnt);

@@ -883,6 +889,7 @@ static void mtip_handle_tfe(struct driver_data *dd)

/* clear the tag accumulator */
memset(tagaccum, 0, SLOTBITS_IN_LONGS * sizeof(long));
+ batch_complete_init(&batch);

/* Loop through all the groups */
for (group = 0; group < dd->slot_groups; group++) {
@@ -916,7 +923,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
if (cmd->comp_func) {
cmd->comp_func(port, tag,
cmd->comp_data,
- -ENODATA);
+ -ENODATA, &batch);
}
continue;
}
@@ -946,13 +953,15 @@ static void mtip_handle_tfe(struct driver_data *dd)
port,
tag,
cmd->comp_data,
- PORT_IRQ_TF_ERR);
+ PORT_IRQ_TF_ERR, &batch);
else
dev_warn(&port->dd->pdev->dev,
"Bad completion for tag %d\n",
tag);
}
}
+
+ batch_complete(&batch);
print_tags(dd, "reissued (TFE)", tagaccum, cmd_cnt);

handle_tfe_exit:
@@ -973,6 +982,9 @@ static inline void mtip_workq_sdbfx(struct mtip_port *port, int group,
struct driver_data *dd = port->dd;
int tag, bit;
struct mtip_cmd *command;
+ struct batch_complete batch;
+
+ batch_complete_init(&batch);

if (!completed) {
WARN_ON_ONCE(!completed);
@@ -997,7 +1009,8 @@ static inline void mtip_workq_sdbfx(struct mtip_port *port, int group,
port,
tag,
command->comp_data,
- 0);
+ 0,
+ &batch);
} else {
dev_warn(&dd->pdev->dev,
"Null completion "
@@ -1007,13 +1020,16 @@ static inline void mtip_workq_sdbfx(struct mtip_port *port, int group,
if (mtip_check_surprise_removal(
dd->pdev)) {
mtip_command_cleanup(dd);
- return;
+ goto out;
}
}
}
completed >>= 1;
}

+out:
+ batch_complete(&batch);
+
/* If last, re-enable interrupts */
if (atomic_dec_return(&dd->irq_workers_active) == 0)
writel(0xffffffff, dd->mmio + HOST_IRQ_STAT);
@@ -1034,7 +1050,7 @@ static inline void mtip_process_legacy(struct driver_data *dd, u32 port_stat)
cmd->comp_func(port,
MTIP_TAG_INTERNAL,
cmd->comp_data,
- 0);
+ 0, NULL);
return;
}
}
@@ -2554,8 +2570,8 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
* None
*/
static void mtip_hw_submit_io(struct driver_data *dd, sector_t sector,
- int nsect, int nents, int tag, void *callback,
- void *data, int dir)
+ int nsect, int nents, int tag,
+ struct bio *bio, int dir)
{
struct host_to_dev_fis *fis;
struct mtip_port *port = dd->port;
@@ -2610,12 +2626,7 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t sector,
command->comp_func = mtip_async_complete;
command->direction = dma_dir;

- /*
- * Set the completion function and data for the command passed
- * from the upper layer.
- */
- command->async_data = data;
- command->async_callback = callback;
+ command->bio = bio;

/*
* To prevent this command from being issued
@@ -3795,7 +3806,6 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
bio_sectors(bio),
nents,
tag,
- bio_endio,
bio,
bio_data_dir(bio));
} else
diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
index 3bffff5..af8c6f7 100644
--- a/drivers/block/mtip32xx/mtip32xx.h
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -325,11 +325,9 @@ struct mtip_cmd {
void (*comp_func)(struct mtip_port *port,
int tag,
void *data,
- int status);
- /* Additional callback function that may be called by comp_func() */
- void (*async_callback)(void *data, int status);
-
- void *async_data; /* Addl. data passed to async_callback() */
+ int status,
+ struct batch_complete *batch);
+ struct bio *bio;

int scatter_ents; /* Number of scatter list entries used */

--
1.7.1

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Next message: Bjorn Helgaas: "Re: Abysmal HDD/USB write speed after sleep on a UEFI system"
Previous message: Marcus Sundman: "Re: Debugging system freezes on filesystem writes"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]