diff options
| author | Mike Chan <mike@android.com> | 2010-05-28 14:32:19 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2010-09-29 17:49:37 -0700 |
| commit | 12b0cec7ba065860bea45049e54657cfc906f08a (patch) | |
| tree | 4b8c7af2403eb337b090adfed9a70145b828ea94 /drivers/misc | |
| parent | 3ddaed49e7423e8b9aeeff01bdf2b055f353fc55 (diff) | |
net: activity_stats: Add statistics for network transmission activity
When enabled, tracks the frequency of network transmissions
(inbound and outbound) and buckets them accordingly.
Buckets are determined by time between network activity.
Each bucket represents the number of network transmisions that were
N sec or longer apart. Where N is defined as 1 << bucket index.
This network pattern tracking is particularly useful for wireless
networks (ie: 3G) where batching network activity closely together
is more power efficient than far apart.
New file: /proc/net/stat/activity
output:
Min Bucket(sec) Count
1 7
2 0
4 1
8 0
16 0
32 2
64 1
128 0
Change-Id: I4c4cd8627b872a55f326b1715c51bc3bdd6e8d92
Signed-off-by: Mike Chan <mike@android.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/uid_stat.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/uid_stat.c b/drivers/misc/uid_stat.c index e6760b56083c..2141124a6c12 100644 --- a/drivers/misc/uid_stat.c +++ b/drivers/misc/uid_stat.c @@ -24,6 +24,7 @@ #include <linux/spinlock.h> #include <linux/stat.h> #include <linux/uid_stat.h> +#include <net/activity_stats.h> static DEFINE_SPINLOCK(uid_lock); static LIST_HEAD(uid_list); @@ -122,6 +123,7 @@ static struct uid_stat *create_stat(uid_t uid) { int uid_stat_tcp_snd(uid_t uid, int size) { struct uid_stat *entry; + activity_stats_update(); if ((entry = find_uid_stat(uid)) == NULL && ((entry = create_stat(uid)) == NULL)) { return -1; @@ -132,6 +134,7 @@ int uid_stat_tcp_snd(uid_t uid, int size) { int uid_stat_tcp_rcv(uid_t uid, int size) { struct uid_stat *entry; + activity_stats_update(); if ((entry = find_uid_stat(uid)) == NULL && ((entry = create_stat(uid)) == NULL)) { return -1; |