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authorMelissa Howland <melissah@us.ibm.com>2006-10-06 16:38:26 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-10-06 16:38:26 +0200
commit2d103d5a80846e96e1cb1ba5e635e8c37d30ada8 (patch)
tree30d3b14de570a33c251d56642df3969beb3994ea /drivers/s390
parentd83682b3971d6707d6d668b3b62d416ab7dd1ab3 (diff)
downloadop-kernel-dev-2d103d5a80846e96e1cb1ba5e635e8c37d30ada8.zip
op-kernel-dev-2d103d5a80846e96e1cb1ba5e635e8c37d30ada8.tar.gz
[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.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 1e3939a..4362ff2 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);
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