[patch 03/34] cio: Fix some coding style issues in cmf.

Martin Schwidefsky
2007-10-04T11:27:09Z

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From: Cornelia Huck <cornelia.huck@de.ibm.com>

Fix some formatting and correct a comment.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
---

drivers/s390/cio/cmf.c | 141 ++++++++++++++++++++++++++-----------------------
include/asm-s390/cmb.h | 8 +-
2 files changed, 81 insertions(+), 68 deletions(-)

Index: quilt-2.6/drivers/s390/cio/cmf.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/cmf.c
+++ quilt-2.6/drivers/s390/cio/cmf.c
@@ -45,7 +45,8 @@
#include "ioasm.h"
#include "chsc.h"

-/* parameter to enable cmf during boot, possible uses are:
+/*
+ * parameter to enable cmf during boot, possible uses are:
* "s390cmf" -- enable cmf and allocate 2 MB of ram so measuring can be
* used on any subchannel
* "s390cmf=<num>" -- enable cmf and allocate enough memory to measure
@@ -84,6 +85,7 @@ enum cmb_format {
CMF_EXTENDED,
CMF_AUTODETECT = -1,
};
+
/**
* format - actual format for all measurement blocks
*
@@ -111,13 +113,13 @@ module_param(format, bool, 0444);
* @align: align an allocated block so that the hardware can use it
*/
struct cmb_operations {
- int (*alloc) (struct ccw_device*);
- void(*free) (struct ccw_device*);
- int (*set) (struct ccw_device*, u32);
- u64 (*read) (struct ccw_device*, int);
- int (*readall)(struct ccw_device*, struct cmbdata *);
- void (*reset) (struct ccw_device*);
- void * (*align) (void *);
+ int (*alloc) (struct ccw_device *);
+ void (*free) (struct ccw_device *);
+ int (*set) (struct ccw_device *, u32);
+ u64 (*read) (struct ccw_device *, int);
+ int (*readall)(struct ccw_device *, struct cmbdata *);
+ void (*reset) (struct ccw_device *);
+ void *(*align) (void *);

struct attribute_group *attr_group;
};
@@ -130,9 +132,11 @@ struct cmb_data {
unsigned long long last_update; /* when last_block was updated */
};

-/* our user interface is designed in terms of nanoseconds,
+/*
+ * Our user interface is designed in terms of nanoseconds,
* while the hardware measures total times in its own
- * unit.*/
+ * unit.
+ */
static inline u64 time_to_nsec(u32 value)
{
return ((u64)value) * 128000ull;
@@ -159,12 +163,13 @@ static inline u64 time_to_avg_nsec(u32 v
return ret;
}

-/* activate or deactivate the channel monitor. When area is NULL,
+/*
+ * Activate or deactivate the channel monitor. When area is NULL,
* the monitor is deactivated. The channel monitor needs to
* be active in order to measure subchannels, which also need
- * to be enabled. */
-static inline void
-cmf_activate(void *area, unsigned int onoff)
+ * to be enabled.
+ */
+static inline void cmf_activate(void *area, unsigned int onoff)
{
register void * __gpr2 asm("2");
register long __gpr1 asm("1");
@@ -175,8 +180,8 @@ cmf_activate(void *area, unsigned int on
asm("schm" : : "d" (__gpr2), "d" (__gpr1) );
}

-static int
-set_schib(struct ccw_device *cdev, u32 mme, int mbfc, unsigned long address)
+static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc,
+ unsigned long address)
{
int ret;
int retry;
@@ -484,15 +489,14 @@ static struct cmb_area cmb_area = {
\f
/* ****** old style CMB handling ********/

-/** int maxchannels
- *
+/*
* Basic channel measurement blocks are allocated in one contiguous
* block of memory, which can not be moved as long as any channel
* is active. Therefore, a maximum number of subchannels needs to
* be defined somewhere. This is a module parameter, defaulting to
* a resonable value of 1024, or 32 kb of memory.
* Current kernels don't allow kmalloc with more than 128kb, so the
- * maximum is 4096
+ * maximum is 4096.
*/

module_param_named(maxchannels, cmb_area.num_channels, uint, 0444);
@@ -516,8 +520,9 @@ struct cmb {
u32 reserved[2];
};

-/* insert a single device into the cmb_area list
- * called with cmb_area.lock held from alloc_cmb
+/*
+ * Insert a single device into the cmb_area list.
+ * Called with cmb_area.lock held from alloc_cmb.
*/
static int alloc_cmb_single(struct ccw_device *cdev,
struct cmb_data *cmb_data)
@@ -532,9 +537,11 @@ static int alloc_cmb_single(struct ccw_d
goto out;
}

- /* find first unused cmb in cmb_area.mem.
- * this is a little tricky: cmb_area.list
- * remains sorted by ->cmb->hw_data pointers */
+ /*
+ * Find first unused cmb in cmb_area.mem.
+ * This is a little tricky: cmb_area.list
+ * remains sorted by ->cmb->hw_data pointers.
+ */
cmb = cmb_area.mem;
list_for_each_entry(node, &cmb_area.list, cmb_list) {
struct cmb_data *data;
@@ -558,8 +565,7 @@ out:
return ret;
}

-static int
-alloc_cmb (struct ccw_device *cdev)
+static int alloc_cmb(struct ccw_device *cdev)
{
int ret;
struct cmb *mem;
@@ -670,7 +676,7 @@ static int set_cmb(struct ccw_device *cd
return set_schib_wait(cdev, mme, 0, offset);
}

-static u64 read_cmb (struct ccw_device *cdev, int index)
+static u64 read_cmb(struct ccw_device *cdev, int index)
{
struct cmb *cmb;
u32 val;
@@ -720,7 +726,7 @@ out:
return ret;
}

-static int readall_cmb (struct ccw_device *cdev, struct cmbdata *data)
+static int readall_cmb(struct ccw_device *cdev, struct cmbdata *data)
{
struct cmb *cmb;
struct cmb_data *cmb_data;
@@ -816,10 +822,12 @@ struct cmbe {
u32 reserved[7];
};

-/* kmalloc only guarantees 8 byte alignment, but we need cmbe
+/*
+ * kmalloc only guarantees 8 byte alignment, but we need cmbe
* pointers to be naturally aligned. Make sure to allocate
- * enough space for two cmbes */
-static inline struct cmbe* cmbe_align(struct cmbe *c)
+ * enough space for two cmbes.
+ */
+static inline struct cmbe *cmbe_align(struct cmbe *c)
{
unsigned long addr;
addr = ((unsigned long)c + sizeof (struct cmbe) - sizeof(long)) &
@@ -827,7 +835,7 @@ static inline struct cmbe* cmbe_align(st
return (struct cmbe*)addr;
}

-static int alloc_cmbe (struct ccw_device *cdev)
+static int alloc_cmbe(struct ccw_device *cdev)
{
struct cmbe *cmbe;
struct cmb_data *cmb_data;
@@ -873,7 +881,7 @@ out_free:
return ret;
}

-static void free_cmbe (struct ccw_device *cdev)
+static void free_cmbe(struct ccw_device *cdev)
{
struct cmb_data *cmb_data;

@@ -912,7 +920,7 @@ static int set_cmbe(struct ccw_device *c
}

-static u64 read_cmbe (struct ccw_device *cdev, int index)
+static u64 read_cmbe(struct ccw_device *cdev, int index)
{
struct cmbe *cmb;
struct cmb_data *cmb_data;
@@ -970,7 +978,7 @@ out:
return ret;
}

-static int readall_cmbe (struct ccw_device *cdev, struct cmbdata *data)
+static int readall_cmbe(struct ccw_device *cdev, struct cmbdata *data)
{
struct cmbe *cmb;
struct cmb_data *cmb_data;
@@ -1049,15 +1057,15 @@ static struct cmb_operations cmbops_exte
};
\f

-static ssize_t
-cmb_show_attr(struct device *dev, char *buf, enum cmb_index idx)
+static ssize_t cmb_show_attr(struct device *dev, char *buf, enum cmb_index idx)
{
return sprintf(buf, "%lld\n",
(unsigned long long) cmf_read(to_ccwdev(dev), idx));
}

-static ssize_t
-cmb_show_avg_sample_interval(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t cmb_show_avg_sample_interval(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
struct ccw_device *cdev;
long interval;
@@ -1079,8 +1087,9 @@ cmb_show_avg_sample_interval(struct devi
return sprintf(buf, "%ld\n", interval);
}

-static ssize_t
-cmb_show_avg_utilization(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t cmb_show_avg_utilization(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
struct cmbdata data;
u64 utilization;
@@ -1112,14 +1121,16 @@ cmb_show_avg_utilization(struct device *
}

#define cmf_attr(name) \
-static ssize_t show_ ## name (struct device * dev, struct device_attribute *attr, char * buf) \
-{ return cmb_show_attr((dev), buf, cmb_ ## name); } \
-static DEVICE_ATTR(name, 0444, show_ ## name, NULL);
+static ssize_t show_##name(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ return cmb_show_attr((dev), buf, cmb_##name); } \
+static DEVICE_ATTR(name, 0444, show_##name, NULL);

#define cmf_attr_avg(name) \
-static ssize_t show_avg_ ## name (struct device * dev, struct device_attribute *attr, char * buf) \
-{ return cmb_show_attr((dev), buf, cmb_ ## name); } \
-static DEVICE_ATTR(avg_ ## name, 0444, show_avg_ ## name, NULL);
+static ssize_t show_avg_##name(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ return cmb_show_attr((dev), buf, cmb_##name); } \
+static DEVICE_ATTR(avg_##name, 0444, show_avg_##name, NULL);

cmf_attr(ssch_rsch_count);
cmf_attr(sample_count);
@@ -1131,7 +1142,8 @@ cmf_attr_avg(device_active_only_time);
cmf_attr_avg(device_busy_time);
cmf_attr_avg(initial_command_response_time);

-static DEVICE_ATTR(avg_sample_interval, 0444, cmb_show_avg_sample_interval, NULL);
+static DEVICE_ATTR(avg_sample_interval, 0444, cmb_show_avg_sample_interval,
+ NULL);
static DEVICE_ATTR(avg_utilization, 0444, cmb_show_avg_utilization, NULL);

static struct attribute *cmf_attributes[] = {
@@ -1172,12 +1184,16 @@ static struct attribute_group cmf_attr_g
.attrs = cmf_attributes_ext,
};

-static ssize_t cmb_enable_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t cmb_enable_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
return sprintf(buf, "%d\n", to_ccwdev(dev)->private->cmb ? 1 : 0);
}

-static ssize_t cmb_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t c)
+static ssize_t cmb_enable_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t c)
{
struct ccw_device *cdev;
int ret;
@@ -1203,8 +1219,7 @@ static ssize_t cmb_enable_store(struct d
DEVICE_ATTR(cmb_enable, 0644, cmb_enable_show, cmb_enable_store);

/* enable_cmf/disable_cmf: module interface for cmf (de)activation */
-int
-enable_cmf(struct ccw_device *cdev)
+int enable_cmf(struct ccw_device *cdev)
{
int ret;

@@ -1225,8 +1240,7 @@ enable_cmf(struct ccw_device *cdev)
return ret;
}

-int
-disable_cmf(struct ccw_device *cdev)
+int disable_cmf(struct ccw_device *cdev)
{
int ret;

@@ -1238,14 +1252,12 @@ disable_cmf(struct ccw_device *cdev)
return ret;
}

-u64
-cmf_read(struct ccw_device *cdev, int index)
+u64 cmf_read(struct ccw_device *cdev, int index)
{
return cmbops->read(cdev, index);
}

-int
-cmf_readall(struct ccw_device *cdev, struct cmbdata *data)
+int cmf_readall(struct ccw_device *cdev, struct cmbdata *data)
{
return cmbops->readall(cdev, data);
}
@@ -1257,15 +1269,16 @@ int cmf_reenable(struct ccw_device *cdev
return cmbops->set(cdev, 2);
}

-static int __init
-init_cmf(void)
+static int __init init_cmf(void)
{
char *format_string;
char *detect_string = "parameter";

- /* We cannot really autoprobe this. If the user did not give a parameter,
- see if we are running on z990 or up, otherwise fall back to basic mode. */
-
+ /*
+ * If the user did not give a parameter, see if we are running on a
+ * machine supporting extended measurement blocks, otherwise fall back
+ * to basic mode.
+ */
if (format == CMF_AUTODETECT) {
if (!css_characteristics_avail ||
!css_general_characteristics.ext_mb) {
@@ -1284,7 +1297,7 @@ init_cmf(void)
cmbops = &cmbops_basic;
break;
case CMF_EXTENDED:
- format_string = "extended";
+ format_string = "extended";
cmbops = &cmbops_extended;
break;
default:
Index: quilt-2.6/include/asm-s390/cmb.h
===================================================================
--- quilt-2.6.orig/include/asm-s390/cmb.h
+++ quilt-2.6/include/asm-s390/cmb.h
@@ -41,11 +41,11 @@ struct cmbdata {
};

/* enable channel measurement */
-#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER,32)
+#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32)
/* enable channel measurement */
-#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER,33)
+#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33)
/* read channel measurement data */
-#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER,33,struct cmbdata)
+#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata)

#ifdef __KERNEL__
struct ccw_device;
@@ -87,7 +87,7 @@ extern u64 cmf_read(struct ccw_device *c
* Context:
* any
**/
-extern int cmf_readall(struct ccw_device *cdev, struct cmbdata*data);
+extern int cmf_readall(struct ccw_device *cdev, struct cmbdata *data);

#endif /* __KERNEL__ */
#endif /* S390_CMB_H */