diff options
| author | Ian Abbott | 2012-04-13 15:12:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2012-04-13 20:18:23 +0200 |
| commit | 234bb3c60f1f1489630750aba4adf40154e0bd70 (patch) | |
| tree | bd7a0fb7a5033a9418056973d01843e345bd7a88 /drivers/staging/comedi/comedi_fops.c | |
| parent | staging: comedi: Add module parameters for default buffer size (diff) | |
| download | kernel-qcow2-linux-234bb3c60f1f1489630750aba4adf40154e0bd70.tar.gz kernel-qcow2-linux-234bb3c60f1f1489630750aba4adf40154e0bd70.tar.xz kernel-qcow2-linux-234bb3c60f1f1489630750aba4adf40154e0bd70.zip | |
staging: comedi: Add kernel config for default buffer sizes
Allow the default values for the module parameters for the default
initial buffer size and default maximum buffer size to be specified in
the kernel configuration.
I'm not sure what the defaults for the defaults for the defaults should
be, but 64 KiB seems to small, so I used values suggested by Bernd Porr,
which are 2048 KiB for the default initial buffer size and 20480 for the
default maximum buffer size.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: Bernd Porr <berndporr@f2s.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedi_fops.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index ef7bbe416614..3222ac6706b4 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -55,9 +55,6 @@ MODULE_AUTHOR("http://www.comedi.org"); MODULE_DESCRIPTION("Comedi core module"); MODULE_LICENSE("GPL"); -#define DEFAULT_BUF_MAXSIZE_KB 64 -#define DEFAULT_BUF_SIZE_KB 64 - #ifdef CONFIG_COMEDI_DEBUG int comedi_debug; EXPORT_SYMBOL(comedi_debug); @@ -78,17 +75,18 @@ MODULE_PARM_DESC(comedi_num_legacy_minors, "number of comedi minor devices to reserve for non-auto-configured devices (default 0)" ); -unsigned int comedi_default_buf_size_kb = DEFAULT_BUF_SIZE_KB; +unsigned int comedi_default_buf_size_kb = CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB; module_param(comedi_default_buf_size_kb, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(comedi_default_buf_size_kb, "default asynchronous buffer size in KiB (default " - __MODULE_STRING(DEFAULT_BUF_SIZE_KB) ")"); + __MODULE_STRING(CONFIG_COMEDI_DEFAULT_BUF_SIZE_KB) ")"); -unsigned int comedi_default_buf_maxsize_kb = DEFAULT_BUF_MAXSIZE_KB; +unsigned int comedi_default_buf_maxsize_kb + = CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB; module_param(comedi_default_buf_maxsize_kb, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(comedi_default_buf_maxsize_kb, "default maximum size of asynchronous buffer in KiB (default " - __MODULE_STRING(DEFAULT_BUF_MAXSIZE_KB) ")"); + __MODULE_STRING(CONFIG_COMEDI_DEFAULT_BUF_MAXSIZE_KB) ")"); static DEFINE_SPINLOCK(comedi_file_info_table_lock); static struct comedi_device_file_info |