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Merge branch 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

Ver código fonte 
Pull UML changes from Richard Weinberger:
 "Mostly bug fixes and cleanups"

* 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (35 commits)
  um: Update defconfig
  um: Switch to large mcmodel on x86_64
  MTD: Relax dependencies
  um: Wire CONFIG_GENERIC_IO up
  um: Serve io_remap_pfn_range()
  Introduce CONFIG_GENERIC_IO
  um: allow SUBARCH=x86
  um: most of the SUBARCH uses can be killed
  um: deadlock in line_write_interrupt()
  um: don't bother trying to rebuild CHECKFLAGS for USER_OBJS
  um: use the right ifdef around exports in user_syms.c
  um: a bunch of headers can be killed by using generic-y
  um: ptrace-generic.h doesn't need user.h
  um: kill HOST_TASK_PID
  um: remove pointless include of asm/fixmap.h from asm/pgtable.h
  um: asm-offsets.h might as well come from underlying arch...
  um: merge processor_{32,64}.h a bit...
  um: switch close_chan() to struct line
  um: race fix: initialize delayed_work *before* registering IRQ
  um: line->have_irq is never checked...
  ...
Esse commit está contido em:
Linus Torvalds
2012-03-27 18:29:53 -07:00
pai 30eebb54b1 3463ff4439
commit fa453a625d
54 arquivos alterados com 813 adições e 733 exclusões
Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

18
arch/um/drivers/chan.h
Ver arquivo

@@ -27,24 +27,24 @@ struct chan {
void *data;
};
extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
extern void chan_interrupt(struct line *line,
struct tty_struct *tty, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
const struct chan_opts *opts, char **error_out);
extern int write_chan(struct list_head *chans, const char *buf, int len,
extern int write_chan(struct chan *chan, const char *buf, int len,
int write_irq);
extern int console_write_chan(struct list_head *chans, const char *buf,
extern int console_write_chan(struct chan *chan, const char *buf,
int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct list_head *chans, int irq);
extern void reactivate_chan(struct list_head *chans, int irq);
extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
extern void deactivate_chan(struct chan *chan, int irq);
extern void reactivate_chan(struct chan *chan, int irq);
extern void chan_enable_winch(struct chan *chan, struct tty_struct *tty);
extern int enable_chan(struct line *line);
extern void close_chan(struct list_head *chans, int delay_free_irq);
extern int chan_window_size(struct list_head *chans,
extern void close_chan(struct line *line);
extern int chan_window_size(struct line *line,
unsigned short *rows_out,
unsigned short *cols_out);
extern int chan_config_string(struct list_head *chans, char *str, int size,
extern int chan_config_string(struct line *line, char *str, int size,
char **error_out);
#endif

196
arch/um/drivers/chan_kern.c
Ver arquivo

@@ -140,18 +140,18 @@ static int open_chan(struct list_head *chans)
return err;
}
void chan_enable_winch(struct list_head *chans, struct tty_struct *tty)
void chan_enable_winch(struct chan *chan, struct tty_struct *tty)
{
struct list_head *ele;
struct chan *chan;
if (chan && chan->primary && chan->ops->winch)
register_winch(chan->fd, tty);
}
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (chan->primary && chan->output && chan->ops->winch) {
register_winch(chan->fd, tty);
return;
}
}
static void line_timer_cb(struct work_struct *work)
{
struct line *line = container_of(work, struct line, task.work);
if (!line->throttled)
chan_interrupt(line, line->tty, line->driver->read_irq);
}
int enable_chan(struct line *line)
@@ -160,6 +160,8 @@ int enable_chan(struct line *line)
struct chan *chan;
int err;
INIT_DELAYED_WORK(&line->task, line_timer_cb);
list_for_each(ele, &line->chan_list) {
chan = list_entry(ele, struct chan, list);
err = open_one_chan(chan);
@@ -183,7 +185,7 @@ int enable_chan(struct line *line)
return 0;
out_close:
close_chan(&line->chan_list, 0);
close_chan(line);
return err;
}
@@ -244,7 +246,7 @@ static void close_one_chan(struct chan *chan, int delay_free_irq)
chan->fd = -1;
}
void close_chan(struct list_head *chans, int delay_free_irq)
void close_chan(struct line *line)
{
struct chan *chan;
@@ -253,77 +255,50 @@ void close_chan(struct list_head *chans, int delay_free_irq)
* state. Then, the first one opened will have the original state,
* so it must be the last closed.
*/
list_for_each_entry_reverse(chan, chans, list) {
close_one_chan(chan, delay_free_irq);
list_for_each_entry_reverse(chan, &line->chan_list, list) {
close_one_chan(chan, 0);
}
}
void deactivate_chan(struct list_head *chans, int irq)
void deactivate_chan(struct chan *chan, int irq)
{
struct list_head *ele;
struct chan *chan;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (chan->enabled && chan->input)
deactivate_fd(chan->fd, irq);
}
if (chan && chan->enabled)
deactivate_fd(chan->fd, irq);
}
void reactivate_chan(struct list_head *chans, int irq)
void reactivate_chan(struct chan *chan, int irq)
{
struct list_head *ele;
struct chan *chan;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (chan->enabled && chan->input)
reactivate_fd(chan->fd, irq);
}
if (chan && chan->enabled)
reactivate_fd(chan->fd, irq);
}
int write_chan(struct list_head *chans, const char *buf, int len,
int write_chan(struct chan *chan, const char *buf, int len,
int write_irq)
{
struct list_head *ele;
struct chan *chan = NULL;
int n, ret = 0;
if (len == 0)
if (len == 0 || !chan || !chan->ops->write)
return 0;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (!chan->output || (chan->ops->write == NULL))
continue;
n = chan->ops->write(chan->fd, buf, len, chan->data);
if (chan->primary) {
ret = n;
if ((ret == -EAGAIN) || ((ret >= 0) && (ret < len)))
reactivate_fd(chan->fd, write_irq);
}
n = chan->ops->write(chan->fd, buf, len, chan->data);
if (chan->primary) {
ret = n;
if ((ret == -EAGAIN) || ((ret >= 0) && (ret < len)))
reactivate_fd(chan->fd, write_irq);
}
return ret;
}
int console_write_chan(struct list_head *chans, const char *buf, int len)
int console_write_chan(struct chan *chan, const char *buf, int len)
{
struct list_head *ele;
struct chan *chan;
int n, ret = 0;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (!chan->output || (chan->ops->console_write == NULL))
continue;
if (!chan || !chan->ops->console_write)
return 0;
n = chan->ops->console_write(chan->fd, buf, len);
if (chan->primary)
ret = n;
}
n = chan->ops->console_write(chan->fd, buf, len);
if (chan->primary)
ret = n;
return ret;
}
@@ -340,20 +315,24 @@ int console_open_chan(struct line *line, struct console *co)
return 0;
}
int chan_window_size(struct list_head *chans, unsigned short *rows_out,
int chan_window_size(struct line *line, unsigned short *rows_out,
unsigned short *cols_out)
{
struct list_head *ele;
struct chan *chan;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (chan->primary) {
if (chan->ops->window_size == NULL)
return 0;
return chan->ops->window_size(chan->fd, chan->data,
rows_out, cols_out);
}
chan = line->chan_in;
if (chan && chan->primary) {
if (chan->ops->window_size == NULL)
return 0;
return chan->ops->window_size(chan->fd, chan->data,
rows_out, cols_out);
}
chan = line->chan_out;
if (chan && chan->primary) {
if (chan->ops->window_size == NULL)
return 0;
return chan->ops->window_size(chan->fd, chan->data,
rows_out, cols_out);
}
return 0;
}
@@ -429,21 +408,15 @@ static int chan_pair_config_string(struct chan *in, struct chan *out,
return n;
}
int chan_config_string(struct list_head *chans, char *str, int size,
int chan_config_string(struct line *line, char *str, int size,
char **error_out)
{
struct list_head *ele;
struct chan *chan, *in = NULL, *out = NULL;
struct chan *in = line->chan_in, *out = line->chan_out;
list_for_each(ele, chans) {
chan = list_entry(ele, struct chan, list);
if (!chan->primary)
continue;
if (chan->input)
in = chan;
if (chan->output)
out = chan;
}
if (in && !in->primary)
in = NULL;
if (out && !out->primary)
out = NULL;
return chan_pair_config_string(in, out, str, size, error_out);
}
@@ -547,10 +520,14 @@ int parse_chan_pair(char *str, struct line *line, int device,
char *in, *out;
if (!list_empty(chans)) {
line->chan_in = line->chan_out = NULL;
free_chan(chans);
INIT_LIST_HEAD(chans);
}
if (!str)
return 0;
out = strchr(str, ',');
if (out != NULL) {
in = str;
@@ -562,6 +539,7 @@ int parse_chan_pair(char *str, struct line *line, int device,
new->input = 1;
list_add(&new->list, chans);
line->chan_in = new;
new = parse_chan(line, out, device, opts, error_out);
if (new == NULL)
@@ -569,6 +547,7 @@ int parse_chan_pair(char *str, struct line *line, int device,
list_add(&new->list, chans);
new->output = 1;
line->chan_out = new;
}
else {
new = parse_chan(line, str, device, opts, error_out);
@@ -578,43 +557,42 @@ int parse_chan_pair(char *str, struct line *line, int device,
list_add(&new->list, chans);
new->input = 1;
new->output = 1;
line->chan_in = line->chan_out = new;
}
return 0;
}
void chan_interrupt(struct list_head *chans, struct delayed_work *task,
struct tty_struct *tty, int irq)
void chan_interrupt(struct line *line, struct tty_struct *tty, int irq)
{
struct list_head *ele, *next;
struct chan *chan;
struct chan *chan = line->chan_in;
int err;
char c;
list_for_each_safe(ele, next, chans) {
chan = list_entry(ele, struct chan, list);
if (!chan->input || (chan->ops->read == NULL))
continue;
do {
if (tty && !tty_buffer_request_room(tty, 1)) {
schedule_delayed_work(task, 1);
goto out;
}
err = chan->ops->read(chan->fd, &c, chan->data);
if (err > 0)
tty_receive_char(tty, c);
} while (err > 0);
if (!chan || !chan->ops->read)
goto out;
if (err == 0)
reactivate_fd(chan->fd, irq);
if (err == -EIO) {
if (chan->primary) {
if (tty != NULL)
tty_hangup(tty);
close_chan(chans, 1);
return;
}
else close_one_chan(chan, 1);
do {
if (tty && !tty_buffer_request_room(tty, 1)) {
schedule_delayed_work(&line->task, 1);
goto out;
}
err = chan->ops->read(chan->fd, &c, chan->data);
if (err > 0)
tty_receive_char(tty, c);
} while (err > 0);
if (err == 0)
reactivate_fd(chan->fd, irq);
if (err == -EIO) {
if (chan->primary) {
if (tty != NULL)
tty_hangup(tty);
if (line->chan_out != chan)
close_one_chan(line->chan_out, 1);
}
close_one_chan(chan, 1);
if (chan->primary)
return;
}
out:
if (tty)

2
arch/um/drivers/chan_user.h
Ver arquivo

@@ -14,8 +14,6 @@ struct chan_opts {
const int raw;
};
enum chan_init_pri { INIT_STATIC, INIT_ALL, INIT_ONE };
struct chan_ops {
char *type;
void *(*init)(char *, int, const struct chan_opts *);

260
arch/um/drivers/line.c
Ver arquivo

@@ -21,19 +21,10 @@ static irqreturn_t line_interrupt(int irq, void *data)
struct line *line = chan->line;
if (line)
chan_interrupt(&line->chan_list, &line->task, line->tty, irq);
chan_interrupt(line, line->tty, irq);
return IRQ_HANDLED;
}
static void line_timer_cb(struct work_struct *work)
{
struct line *line = container_of(work, struct line, task.work);
if (!line->throttled)
chan_interrupt(&line->chan_list, &line->task, line->tty,
line->driver->read_irq);
}
/*
* Returns the free space inside the ring buffer of this line.
*
@@ -145,7 +136,7 @@ static int flush_buffer(struct line *line)
/* line->buffer + LINE_BUFSIZE is the end of the buffer! */
count = line->buffer + LINE_BUFSIZE - line->head;
n = write_chan(&line->chan_list, line->head, count,
n = write_chan(line->chan_out, line->head, count,
line->driver->write_irq);
if (n < 0)
return n;
@@ -162,7 +153,7 @@ static int flush_buffer(struct line *line)
}
count = line->tail - line->head;
n = write_chan(&line->chan_list, line->head, count,
n = write_chan(line->chan_out, line->head, count,
line->driver->write_irq);
if (n < 0)
@@ -206,7 +197,7 @@ int line_write(struct tty_struct *tty, const unsigned char *buf, int len)
if (line->head != line->tail)
ret = buffer_data(line, buf, len);
else {
n = write_chan(&line->chan_list, buf, len,
n = write_chan(line->chan_out, buf, len,
line->driver->write_irq);
if (n < 0) {
ret = n;
@@ -318,7 +309,7 @@ void line_throttle(struct tty_struct *tty)
{
struct line *line = tty->driver_data;
deactivate_chan(&line->chan_list, line->driver->read_irq);
deactivate_chan(line->chan_in, line->driver->read_irq);
line->throttled = 1;
}
@@ -327,8 +318,7 @@ void line_unthrottle(struct tty_struct *tty)
struct line *line = tty->driver_data;
line->throttled = 0;
chan_interrupt(&line->chan_list, &line->task, tty,
line->driver->read_irq);
chan_interrupt(line, tty, line->driver->read_irq);
/*
* Maybe there is enough stuff pending that calling the interrupt
@@ -336,7 +326,7 @@ void line_unthrottle(struct tty_struct *tty)
* again and we shouldn't turn the interrupt back on.
*/
if (!line->throttled)
reactivate_chan(&line->chan_list, line->driver->read_irq);
reactivate_chan(line->chan_in, line->driver->read_irq);
}
static irqreturn_t line_write_interrupt(int irq, void *data)
@@ -347,13 +337,14 @@ static irqreturn_t line_write_interrupt(int irq, void *data)
int err;
/*
* Interrupts are disabled here because we registered the interrupt with
* IRQF_DISABLED (see line_setup_irq).
* Interrupts are disabled here because genirq keep irqs disabled when
* calling the action handler.
*/
spin_lock(&line->lock);
err = flush_buffer(line);
if (err == 0) {
spin_unlock(&line->lock);
return IRQ_NONE;
} else if (err < 0) {
line->head = line->buffer;
@@ -371,7 +362,7 @@ static irqreturn_t line_write_interrupt(int irq, void *data)
int line_setup_irq(int fd, int input, int output, struct line *line, void *data)
{
const struct line_driver *driver = line->driver;
int err = 0, flags = IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM;
int err = 0, flags = IRQF_SHARED | IRQF_SAMPLE_RANDOM;
if (input)
err = um_request_irq(driver->read_irq, fd, IRQ_READ,
@@ -383,7 +374,6 @@ int line_setup_irq(int fd, int input, int output, struct line *line, void *data)
err = um_request_irq(driver->write_irq, fd, IRQ_WRITE,
line_write_interrupt, flags,
driver->write_irq_name, data);
line->have_irq = 1;
return err;
}
@@ -409,7 +399,7 @@ int line_open(struct line *lines, struct tty_struct *tty)
struct line *line = &lines[tty->index];
int err = -ENODEV;
spin_lock(&line->count_lock);
mutex_lock(&line->count_lock);
if (!line->valid)
goto out_unlock;
@@ -421,25 +411,19 @@ int line_open(struct line *lines, struct tty_struct *tty)
tty->driver_data = line;
line->tty = tty;
spin_unlock(&line->count_lock);
err = enable_chan(line);
if (err) /* line_close() will be called by our caller */
return err;
INIT_DELAYED_WORK(&line->task, line_timer_cb);
goto out_unlock;
if (!line->sigio) {
chan_enable_winch(&line->chan_list, tty);
chan_enable_winch(line->chan_out, tty);
line->sigio = 1;
}
chan_window_size(&line->chan_list, &tty->winsize.ws_row,
chan_window_size(line, &tty->winsize.ws_row,
&tty->winsize.ws_col);
return 0;
out_unlock:
spin_unlock(&line->count_lock);
mutex_unlock(&line->count_lock);
return err;
}
@@ -459,7 +443,7 @@ void line_close(struct tty_struct *tty, struct file * filp)
/* We ignore the error anyway! */
flush_buffer(line);
spin_lock(&line->count_lock);
mutex_lock(&line->count_lock);
BUG_ON(!line->valid);
if (--line->count)
@@ -468,17 +452,13 @@ void line_close(struct tty_struct *tty, struct file * filp)
line->tty = NULL;
tty->driver_data = NULL;
spin_unlock(&line->count_lock);
if (line->sigio) {
unregister_winch(tty);
line->sigio = 0;
}
return;
out_unlock:
spin_unlock(&line->count_lock);
mutex_unlock(&line->count_lock);
}
void close_lines(struct line *lines, int nlines)
@@ -486,34 +466,60 @@ void close_lines(struct line *lines, int nlines)
int i;
for(i = 0; i < nlines; i++)
close_chan(&lines[i].chan_list, 0);
close_chan(&lines[i]);
}
static int setup_one_line(struct line *lines, int n, char *init, int init_prio,
char **error_out)
int setup_one_line(struct line *lines, int n, char *init,
const struct chan_opts *opts, char **error_out)
{
struct line *line = &lines[n];
struct tty_driver *driver = line->driver->driver;
int err = -EINVAL;
spin_lock(&line->count_lock);
mutex_lock(&line->count_lock);
if (line->count) {
*error_out = "Device is already open";
goto out;
}
if (line->init_pri <= init_prio) {
line->init_pri = init_prio;
if (!strcmp(init, "none"))
if (!strcmp(init, "none")) {
if (line->valid) {
line->valid = 0;
else {
line->init_str = init;
line->valid = 1;
kfree(line->init_str);
tty_unregister_device(driver, n);
parse_chan_pair(NULL, line, n, opts, error_out);
err = 0;
}
} else {
char *new = kstrdup(init, GFP_KERNEL);
if (!new) {
*error_out = "Failed to allocate memory";
return -ENOMEM;
}
if (line->valid) {
tty_unregister_device(driver, n);
kfree(line->init_str);
}
line->init_str = new;
line->valid = 1;
err = parse_chan_pair(new, line, n, opts, error_out);
if (!err) {
struct device *d = tty_register_device(driver, n, NULL);
if (IS_ERR(d)) {
*error_out = "Failed to register device";
err = PTR_ERR(d);
parse_chan_pair(NULL, line, n, opts, error_out);
}
}
if (err) {
line->init_str = NULL;
line->valid = 0;
kfree(new);
}
}
err = 0;
out:
spin_unlock(&line->count_lock);
mutex_unlock(&line->count_lock);
return err;
}
@@ -524,54 +530,43 @@ out:
* @error_out is an error string in the case of failure;
*/
int line_setup(struct line *lines, unsigned int num, char *init,
char **error_out)
int line_setup(char **conf, unsigned int num, char **def,
char *init, char *name)
{
int i, n, err;
char *end;
char *error;
if (*init == '=') {
/*
* We said con=/ssl= instead of con#=, so we are configuring all
* consoles at once.
*/
n = -1;
}
else {
n = simple_strtoul(init, &end, 0);
if (*end != '=') {
*error_out = "Couldn't parse device number";
return -EINVAL;
}
init = end;
}
init++;
*def = init + 1;
} else {
char *end;
unsigned n = simple_strtoul(init, &end, 0);
if (n >= (signed int) num) {
*error_out = "Device number out of range";
return -EINVAL;
}
else if (n >= 0) {
err = setup_one_line(lines, n, init, INIT_ONE, error_out);
if (err)
return err;
}
else {
for(i = 0; i < num; i++) {
err = setup_one_line(lines, i, init, INIT_ALL,
error_out);
if (err)
return err;
if (*end != '=') {
error = "Couldn't parse device number";
goto out;
}
if (n >= num) {
error = "Device number out of range";
goto out;
}
conf[n] = end + 1;
}
return n == -1 ? num : n;
return 0;
out:
printk(KERN_ERR "Failed to set up %s with "
"configuration string \"%s\" : %s\n", name, init, error);
return -EINVAL;
}
int line_config(struct line *lines, unsigned int num, char *str,
const struct chan_opts *opts, char **error_out)
{
struct line *line;
char *new;
char *end;
int n;
if (*str == '=') {
@@ -579,17 +574,17 @@ int line_config(struct line *lines, unsigned int num, char *str,
return -EINVAL;
}
new = kstrdup(str, GFP_KERNEL);
if (new == NULL) {
*error_out = "Failed to allocate memory";
return -ENOMEM;
n = simple_strtoul(str, &end, 0);
if (*end++ != '=') {
*error_out = "Couldn't parse device number";
return -EINVAL;
}
if (n >= num) {
*error_out = "Device number out of range";
return -EINVAL;
}
n = line_setup(lines, num, new, error_out);
if (n < 0)
return n;
line = &lines[n];
return parse_chan_pair(line->init_str, line, n, opts, error_out);
return setup_one_line(lines, n, end, opts, error_out);
}
int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
@@ -612,13 +607,13 @@ int line_get_config(char *name, struct line *lines, unsigned int num, char *str,
line = &lines[dev];
spin_lock(&line->count_lock);
mutex_lock(&line->count_lock);
if (!line->valid)
CONFIG_CHUNK(str, size, n, "none", 1);
else if (line->tty == NULL)
CONFIG_CHUNK(str, size, n, line->init_str, 1);
else n = chan_config_string(&line->chan_list, str, size, error_out);
spin_unlock(&line->count_lock);
else n = chan_config_string(line, str, size, error_out);
mutex_unlock(&line->count_lock);
return n;
}
@@ -640,25 +635,23 @@ int line_id(char **str, int *start_out, int *end_out)
int line_remove(struct line *lines, unsigned int num, int n, char **error_out)
{
int err;
char config[sizeof("conxxxx=none\0")];
sprintf(config, "%d=none", n);
err = line_setup(lines, num, config, error_out);
if (err >= 0)
err = 0;
return err;
if (n >= num) {
*error_out = "Device number out of range";
return -EINVAL;
}
return setup_one_line(lines, n, "none", NULL, error_out);
}
struct tty_driver *register_lines(struct line_driver *line_driver,
const struct tty_operations *ops,
struct line *lines, int nlines)
int register_lines(struct line_driver *line_driver,
const struct tty_operations *ops,
struct line *lines, int nlines)
{
int i;
struct tty_driver *driver = alloc_tty_driver(nlines);
int err;
int i;
if (!driver)
return NULL;
return -ENOMEM;
driver->driver_name = line_driver->name;
driver->name = line_driver->device_name;
@@ -666,54 +659,33 @@ struct tty_driver *register_lines(struct line_driver *line_driver,
driver->minor_start = line_driver->minor_start;
driver->type = line_driver->type;
driver->subtype = line_driver->subtype;
driver->flags = TTY_DRIVER_REAL_RAW;
driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
driver->init_termios = tty_std_termios;
for (i = 0; i < nlines; i++) {
spin_lock_init(&lines[i].lock);
mutex_init(&lines[i].count_lock);
lines[i].driver = line_driver;
INIT_LIST_HEAD(&lines[i].chan_list);
}
tty_set_operations(driver, ops);
if (tty_register_driver(driver)) {
err = tty_register_driver(driver);
if (err) {
printk(KERN_ERR "register_lines : can't register %s driver\n",
line_driver->name);
put_tty_driver(driver);
return NULL;
}
for(i = 0; i < nlines; i++) {
if (!lines[i].valid)
tty_unregister_device(driver, i);
return err;
}
line_driver->driver = driver;
mconsole_register_dev(&line_driver->mc);
return driver;
return 0;
}
static DEFINE_SPINLOCK(winch_handler_lock);
static LIST_HEAD(winch_handlers);
void lines_init(struct line *lines, int nlines, struct chan_opts *opts)
{
struct line *line;
char *error;
int i;
for(i = 0; i < nlines; i++) {
line = &lines[i];
INIT_LIST_HEAD(&line->chan_list);
if (line->init_str == NULL)
continue;
line->init_str = kstrdup(line->init_str, GFP_KERNEL);
if (line->init_str == NULL)
printk(KERN_ERR "lines_init - kstrdup returned NULL\n");
if (parse_chan_pair(line->init_str, line, i, opts, &error)) {
printk(KERN_ERR "parse_chan_pair failed for "
"device %d : %s\n", i, error);
line->valid = 0;
}
}
}
struct winch {
struct list_head list;
int fd;
@@ -777,7 +749,7 @@ static irqreturn_t winch_interrupt(int irq, void *data)
if (tty != NULL) {
line = tty->driver_data;
if (line != NULL) {
chan_window_size(&line->chan_list, &tty->winsize.ws_row,
chan_window_size(line, &tty->winsize.ws_row,
&tty->winsize.ws_col);
kill_pgrp(tty->pgrp, SIGWINCH, 1);
}
@@ -807,7 +779,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty,
.stack = stack });
if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"winch", winch) < 0) {
printk(KERN_ERR "register_winch_irq - failed to register "
"IRQ\n");

29
arch/um/drivers/line.h
Ver arquivo

@@ -15,7 +15,7 @@
#include "chan_user.h"
#include "mconsole_kern.h"
/* There's only one modifiable field in this - .mc.list */
/* There's only two modifiable fields in this - .mc.list and .driver */
struct line_driver {
const char *name;
const char *device_name;
@@ -28,17 +28,18 @@ struct line_driver {
const int write_irq;
const char *write_irq_name;
struct mc_device mc;
struct tty_driver *driver;
};
struct line {
struct tty_struct *tty;
spinlock_t count_lock;
struct mutex count_lock;
unsigned long count;
int valid;
char *init_str;
int init_pri;
struct list_head chan_list;
struct chan *chan_in, *chan_out;
/*This lock is actually, mostly, local to*/
spinlock_t lock;
@@ -55,21 +56,12 @@ struct line {
int sigio;
struct delayed_work task;
const struct line_driver *driver;
int have_irq;
};
#define LINE_INIT(str, d) \
{ .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \
.init_str = str, \
.init_pri = INIT_STATIC, \
.valid = 1, \
.lock = __SPIN_LOCK_UNLOCKED((str).lock), \
.driver = d }
extern void line_close(struct tty_struct *tty, struct file * filp);
extern int line_open(struct line *lines, struct tty_struct *tty);
extern int line_setup(struct line *lines, unsigned int sizeof_lines,
char *init, char **error_out);
extern int line_setup(char **conf, unsigned nlines, char **def,
char *init, char *name);
extern int line_write(struct tty_struct *tty, const unsigned char *buf,
int len);
extern int line_put_char(struct tty_struct *tty, unsigned char ch);
@@ -87,10 +79,11 @@ extern char *add_xterm_umid(char *base);
extern int line_setup_irq(int fd, int input, int output, struct line *line,
void *data);
extern void line_close_chan(struct line *line);
extern struct tty_driver *register_lines(struct line_driver *line_driver,
const struct tty_operations *driver,
struct line *lines, int nlines);
extern void lines_init(struct line *lines, int nlines, struct chan_opts *opts);
extern int register_lines(struct line_driver *line_driver,
const struct tty_operations *driver,
struct line *lines, int nlines);
extern int setup_one_line(struct line *lines, int n, char *init,
const struct chan_opts *opts, char **error_out);
extern void close_lines(struct line *lines, int nlines);
extern int line_config(struct line *lines, unsigned int sizeof_lines,

2
arch/um/drivers/mconsole_kern.c
Ver arquivo

@@ -773,7 +773,7 @@ static int __init mconsole_init(void)
register_reboot_notifier(&reboot_notifier);
err = um_request_irq(MCONSOLE_IRQ, sock, IRQ_READ, mconsole_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"mconsole", (void *)sock);
if (err) {
printk(KERN_ERR "Failed to get IRQ for management console\n");

2
arch/um/drivers/net_kern.c
Ver arquivo

@@ -161,7 +161,7 @@ static int uml_net_open(struct net_device *dev)
}
err = um_request_irq(dev->irq, lp->fd, IRQ_READ, uml_net_interrupt,
IRQF_DISABLED | IRQF_SHARED, dev->name, dev);
IRQF_SHARED, dev->name, dev);
if (err != 0) {
printk(KERN_ERR "uml_net_open: failed to get irq(%d)\n", err);
err = -ENETUNREACH;

4
arch/um/drivers/port_kern.c
Ver arquivo

@@ -100,7 +100,7 @@ static int port_accept(struct port_list *port)
.port = port });
if (um_request_irq(TELNETD_IRQ, socket[0], IRQ_READ, pipe_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"telnetd", conn)) {
printk(KERN_ERR "port_accept : failed to get IRQ for "
"telnetd\n");
@@ -184,7 +184,7 @@ void *port_data(int port_num)
}
if (um_request_irq(ACCEPT_IRQ, fd, IRQ_READ, port_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"port", port)) {
printk(KERN_ERR "Failed to get IRQ for port %d\n", port_num);
goto out_close;

2
arch/um/drivers/random.c
Ver arquivo

@@ -131,7 +131,7 @@ static int __init rng_init (void)
random_fd = err;
err = um_request_irq(RANDOM_IRQ, random_fd, IRQ_READ, random_interrupt,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "random",
IRQF_SAMPLE_RANDOM, "random",
NULL);
if (err)
goto err_out_cleanup_hw;

41
arch/um/drivers/ssl.c
Ver arquivo

@@ -20,12 +20,6 @@
static const int ssl_version = 1;
/* Referenced only by tty_driver below - presumably it's locked correctly
* by the tty driver.
*/
static struct tty_driver *ssl_driver;
#define NR_PORTS 64
static void ssl_announce(char *dev_name, int dev)
@@ -71,8 +65,9 @@ static struct line_driver driver = {
/* The array is initialized by line_init, at initcall time. The
* elements are locked individually as needed.
*/
static struct line serial_lines[NR_PORTS] =
{ [0 ... NR_PORTS - 1] = LINE_INIT(CONFIG_SSL_CHAN, &driver) };
static char *conf[NR_PORTS];
static char *def_conf = CONFIG_SSL_CHAN;
static struct line serial_lines[NR_PORTS];
static int ssl_config(char *str, char **error_out)
{
@@ -156,14 +151,14 @@ static void ssl_console_write(struct console *c, const char *string,
unsigned long flags;
spin_lock_irqsave(&line->lock, flags);
console_write_chan(&line->chan_list, string, len);
console_write_chan(line->chan_out, string, len);
spin_unlock_irqrestore(&line->lock, flags);
}
static struct tty_driver *ssl_console_device(struct console *c, int *index)
{
*index = c->index;
return ssl_driver;
return driver.driver;
}
static int ssl_console_setup(struct console *co, char *options)
@@ -186,17 +181,30 @@ static struct console ssl_cons = {
static int ssl_init(void)
{
char *new_title;
int err;
int i;
printk(KERN_INFO "Initializing software serial port version %d\n",
ssl_version);
ssl_driver = register_lines(&driver, &ssl_ops, serial_lines,
err = register_lines(&driver, &ssl_ops, serial_lines,
ARRAY_SIZE(serial_lines));
if (err)
return err;
new_title = add_xterm_umid(opts.xterm_title);
if (new_title != NULL)
opts.xterm_title = new_title;
lines_init(serial_lines, ARRAY_SIZE(serial_lines), &opts);
for (i = 0; i < NR_PORTS; i++) {
char *error;
char *s = conf[i];
if (!s)
s = def_conf;
if (setup_one_line(serial_lines, i, s, &opts, &error))
printk(KERN_ERR "setup_one_line failed for "
"device %d : %s\n", i, error);
}
ssl_init_done = 1;
register_console(&ssl_cons);
@@ -214,14 +222,7 @@ __uml_exitcall(ssl_exit);
static int ssl_chan_setup(char *str)
{
char *error;
int ret;
ret = line_setup(serial_lines, ARRAY_SIZE(serial_lines), str, &error);
if(ret < 0)
printk(KERN_ERR "Failed to set up serial line with "
"configuration string \"%s\" : %s\n", str, error);
line_setup(conf, NR_PORTS, &def_conf, str, "serial line");
return 1;
}

46
arch/um/drivers/stdio_console.c
Ver arquivo

@@ -27,12 +27,6 @@
#define MAX_TTYS (16)
/* Referenced only by tty_driver below - presumably it's locked correctly
* by the tty driver.
*/
static struct tty_driver *console_driver;
static void stdio_announce(char *dev_name, int dev)
{
printk(KERN_INFO "Virtual console %d assigned device '%s'\n", dev,
@@ -76,9 +70,9 @@ static struct line_driver driver = {
/* The array is initialized by line_init, at initcall time. The
* elements are locked individually as needed.
*/
static struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
[ 1 ... MAX_TTYS - 1 ] =
LINE_INIT(CONFIG_CON_CHAN, &driver) };
static char *vt_conf[MAX_TTYS];
static char *def_conf;
static struct line vts[MAX_TTYS];
static int con_config(char *str, char **error_out)
{
@@ -130,14 +124,14 @@ static void uml_console_write(struct console *console, const char *string,
unsigned long flags;
spin_lock_irqsave(&line->lock, flags);
console_write_chan(&line->chan_list, string, len);
console_write_chan(line->chan_out, string, len);
spin_unlock_irqrestore(&line->lock, flags);
}
static struct tty_driver *uml_console_device(struct console *c, int *index)
{
*index = c->index;
return console_driver;
return driver.driver;
}
static int uml_console_setup(struct console *co, char *options)
@@ -160,18 +154,31 @@ static struct console stdiocons = {
static int stdio_init(void)
{
char *new_title;
int err;
int i;
console_driver = register_lines(&driver, &console_ops, vts,
err = register_lines(&driver, &console_ops, vts,
ARRAY_SIZE(vts));
if (console_driver == NULL)
return -1;
if (err)
return err;
printk(KERN_INFO "Initialized stdio console driver\n");
new_title = add_xterm_umid(opts.xterm_title);
if(new_title != NULL)
opts.xterm_title = new_title;
lines_init(vts, ARRAY_SIZE(vts), &opts);
for (i = 0; i < MAX_TTYS; i++) {
char *error;
char *s = vt_conf[i];
if (!s)
s = def_conf;
if (!s)
s = i ? CONFIG_CON_CHAN : CONFIG_CON_ZERO_CHAN;
if (setup_one_line(vts, i, s, &opts, &error))
printk(KERN_ERR "setup_one_line failed for "
"device %d : %s\n", i, error);
}
con_init_done = 1;
register_console(&stdiocons);
@@ -189,14 +196,7 @@ __uml_exitcall(console_exit);
static int console_chan_setup(char *str)
{
char *error;
int ret;
ret = line_setup(vts, ARRAY_SIZE(vts), str, &error);
if(ret < 0)
printk(KERN_ERR "Failed to set up console with "
"configuration string \"%s\" : %s\n", str, error);
line_setup(vt_conf, MAX_TTYS, &def_conf, str, "console");
return 1;
}
__setup("con", console_chan_setup);

0
arch/um/drivers/ubd_user.h → arch/um/drivers/ubd.h
Ver arquivo

46
arch/um/drivers/ubd_kern.c
Ver arquivo

@@ -19,40 +19,26 @@
#define UBD_SHIFT 4
#include "linux/kernel.h"
#include "linux/module.h"
#include "linux/blkdev.h"
#include "linux/ata.h"
#include "linux/hdreg.h"
#include "linux/init.h"
#include "linux/cdrom.h"
#include "linux/proc_fs.h"
#include "linux/seq_file.h"
#include "linux/ctype.h"
#include "linux/capability.h"
#include "linux/mm.h"
#include "linux/slab.h"
#include "linux/vmalloc.h"
#include "linux/mutex.h"
#include "linux/blkpg.h"
#include "linux/genhd.h"
#include "linux/spinlock.h"
#include "linux/platform_device.h"
#include "linux/scatterlist.h"
#include "asm/segment.h"
#include "asm/uaccess.h"
#include "asm/irq.h"
#include "asm/types.h"
#include "asm/tlbflush.h"
#include "mem_user.h"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/ata.h>
#include <linux/hdreg.h>
#include <linux/cdrom.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/scatterlist.h>
#include <asm/tlbflush.h>
#include "kern_util.h"
#include "mconsole_kern.h"
#include "init.h"
#include "irq_user.h"
#include "irq_kern.h"
#include "ubd_user.h"
#include "ubd.h"
#include "os.h"
#include "mem.h"
#include "cow.h"
enum ubd_req { UBD_READ, UBD_WRITE };
@@ -1115,7 +1101,7 @@ static int __init ubd_driver_init(void){
return 0;
}
err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
IRQF_DISABLED, "ubd", ubd_devs);
0, "ubd", ubd_devs);
if(err != 0)
printk(KERN_ERR "um_request_irq failed - errno = %d\n", -err);
return 0;

8
arch/um/drivers/ubd_user.c
Ver arquivo

@@ -15,14 +15,12 @@
#include <sys/socket.h>
#include <sys/mman.h>
#include <sys/param.h>
#include "asm/types.h"
#include "ubd_user.h"
#include "os.h"
#include "cow.h"
#include <endian.h>
#include <byteswap.h>
#include "ubd.h"
#include "os.h"
void ignore_sigwinch_sig(void)
{
signal(SIGWINCH, SIG_IGN);

2
arch/um/drivers/xterm_kern.c
Ver arquivo

@@ -50,7 +50,7 @@ int xterm_fd(int socket, int *pid_out)
init_completion(&data->ready);
err = um_request_irq(XTERM_IRQ, socket, IRQ_READ, xterm_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"xterm", data);
if (err) {
printk(KERN_ERR "xterm_fd : failed to get IRQ for xterm, "