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| author |   Melissa Howland <melissah@us.ibm.com> | 2006-10-06 16:38:26 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-10-06 16:38:26 +0200 |
| commit | 2d103d5a80846e96e1cb1ba5e635e8c37d30ada8 (patch) | |
| tree | 30d3b14de570a33c251d56642df3969beb3994ea /drivers/s390 | |
| parent | [S390] ap bus poll thread priority. (diff) | |
| download | linux-dev-2d103d5a80846e96e1cb1ba5e635e8c37d30ada8.tar.xz linux-dev-2d103d5a80846e96e1cb1ba5e635e8c37d30ada8.zip | |
[S390] monwriter buffer limit.
Make max_bufs a global (per linux guest) limit.
Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/monwriter.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c index 1e3939aeb8ab..4362ff260244 100644 --- a/drivers/s390/char/monwriter.c +++ b/drivers/s390/char/monwriter.c @@ -26,6 +26,7 @@ #define MONWRITE_MAX_DATALEN 4024 static int mon_max_bufs = 255; +static int mon_buf_count; struct mon_buf { struct list_head list; @@ -40,7 +41,6 @@ struct mon_private { size_t hdr_to_read; size_t data_to_read; struct mon_buf *current_buf; - int mon_buf_count; }; /* @@ -99,13 +99,13 @@ static int monwrite_new_hdr(struct mon_private *monpriv) rc = monwrite_diag(monhdr, monbuf->data, APPLDATA_STOP_REC); list_del(&monbuf->list); - monpriv->mon_buf_count--; + mon_buf_count--; kfree(monbuf->data); kfree(monbuf); monbuf = NULL; } } else { - if (monpriv->mon_buf_count >= mon_max_bufs) + if (mon_buf_count >= mon_max_bufs) return -ENOSPC; monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL); if (!monbuf) @@ -118,7 +118,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv) } monbuf->hdr = *monhdr; list_add_tail(&monbuf->list, &monpriv->list); - monpriv->mon_buf_count++; + mon_buf_count++; } monpriv->current_buf = monbuf; return 0; @@ -186,7 +186,7 @@ static int monwrite_close(struct inode *inode, struct file *filp) if (entry->hdr.mon_function != MONWRITE_GEN_EVENT) monwrite_diag(&entry->hdr, entry->data, APPLDATA_STOP_REC); - monpriv->mon_buf_count--; + mon_buf_count--; list_del(&entry->list); kfree(entry->data); kfree(entry); |