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wprobe: move measurement task to the kernel, add some configurability (work in progress)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16402 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
2009-06-10 14:37:36 +00:00
parent ff31d59270
commit dfe42a2505
9 changed files with 475 additions and 155 deletions
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39
package/wprobe/src/kernel/linux/wprobe.h
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@@ -32,13 +32,12 @@
*
* @WPROBE_ATTR_INTERFACE: interface name to process query on (NLA_STRING)
* @WPROBE_ATTR_MAC: mac address (used for wireless links) (NLA_STRING)
* @WPROBE_ATTR_FLAGS: interface/link/attribute flags (see enum wprobe_flags) (NLA_U32)
* @WPROBE_ATTR_DURATION: sampling duration (in milliseconds) (NLA_MSECS)
* @WPROBE_ATTR_FLAGS: interface/link/attribute flags (see enum wprobe_flags) (NLA_U32)a
* @WPROBE_ATTR_DURATION: sampling duration (in milliseconds) (NLA_MSECS)
*
* @WPROBE_ATTR_ID: attribute id (NLA_U32)
* @WPROBE_ATTR_NAME: attribute name (NLA_STRING)
* @WPROBE_ATTR_TYPE: attribute type (NLA_U8)
* @WPROBE_ATTR_SCALE: attribute scale factor (NLA_U32)
*
* attribute values:
*
@@ -56,22 +55,29 @@
* @WPROBE_VAL_SUM: sum of all samples
* @WPROBE_VAL_SUM_SQ: sum of all samples^2
* @WPROBE_VAL_SAMPLES: number of samples
* @WPROBE_VAL_SCALE_TIME: last time the samples were scaled down
*
* configuration:
* @WPROBE_ATTR_INTERVAL: (measurement interval in milliseconds) (NLA_MSECS)
* @WPROBE_ATTR_SAMPLES_MIN: minimum samples to keep during inactivity (NLA_U32)
* @WPROBE_ATTR_SAMPLES_MAX: maximum samples to keep before scaling down (NLA_U32)
* @WPROBE_ATTR_SAMPLES_SCALE_M: multiplier for scaling down samples (NLA_U32)
* @WPROBE_ATTR_SAMPLES_SCALE_D: divisor for scaling down samples (NLA_U32)
*
* @WPROBE_ATTR_LAST: unused
*/
enum wprobe_attr {
/* query attributes */
WPROBE_ATTR_UNSPEC,
WPROBE_ATTR_INTERFACE,
WPROBE_ATTR_MAC,
WPROBE_ATTR_FLAGS,
WPROBE_ATTR_DURATION,
WPROBE_ATTR_SCALE,
/* end of query attributes */
/* response data */
WPROBE_ATTR_ID,
WPROBE_ATTR_NAME,
WPROBE_ATTR_TYPE,
WPROBE_ATTR_DURATION,
/* value type attributes */
WPROBE_VAL_STRING,
@@ -88,6 +94,14 @@ enum wprobe_attr {
WPROBE_VAL_SUM,
WPROBE_VAL_SUM_SQ,
WPROBE_VAL_SAMPLES,
WPROBE_VAL_SCALE_TIME,
/* config attributes */
WPROBE_ATTR_INTERVAL,
WPROBE_ATTR_SAMPLES_MIN,
WPROBE_ATTR_SAMPLES_MAX,
WPROBE_ATTR_SAMPLES_SCALE_M,
WPROBE_ATTR_SAMPLES_SCALE_D,
WPROBE_ATTR_LAST
};
@@ -117,6 +131,7 @@ enum wprobe_cmd {
WPROBE_CMD_SET_FLAGS,
WPROBE_CMD_MEASURE,
WPROBE_CMD_GET_LINKS,
WPROBE_CMD_CONFIG,
WPROBE_CMD_LAST
};
@@ -192,6 +207,7 @@ struct wprobe_value {
/* timestamps */
u64 first, last;
u64 scale_timestamp;
};
/**
@@ -225,7 +241,8 @@ struct wprobe_iface {
const struct wprobe_item *global_items;
int n_global_items;
int (*sync_data)(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure);
int (*sync_data)(struct wprobe_iface *dev, struct wprobe_link *l,
struct wprobe_value *val, bool measure);
void *priv;
/* handled by the wprobe core */
@@ -234,6 +251,14 @@ struct wprobe_iface {
spinlock_t lock;
void *val;
void *query_val;
u32 measure_interval;
struct timer_list measure_timer;
u32 scale_min;
u32 scale_max;
u32 scale_m;
u32 scale_d;
};
#define WPROBE_FILL_BEGIN(_ptr, _list) do { \