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infra: add total statistics to limiter

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This commit is contained in:
Thomas Schoebel-Theuer 2015-06-24 09:33:21 +02:00
parent a983bf42de
commit 27eb38ff3e
3 changed files with 11 additions and 0 deletions
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7
kernel/lib_limiter.c
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@ -51,6 +51,13 @@ int mars_limit(struct mars_limiter *lim, int amount)
if (unlikely(window < (long long)lim->lim_min_window * (LIMITER_TIME_RESOLUTION / 1000)))
window = (long long)lim->lim_min_window * (LIMITER_TIME_RESOLUTION / 1000);
/* Update total statistics.
* They will intentionally wrap around.
* Userspace must take care of that.
*/
lim->lim_total_ops++;
lim->lim_total_sum += amount;
/* Only use incremental accumulation at repeated calls, but
* never after longer pauses.
*/

2
kernel/lib_limiter.h
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@ -40,6 +40,8 @@ struct mars_limiter {
int lim_rate;
int lim_cumul;
int lim_count;
int lim_total_ops;
int lim_total_sum;
long long lim_stamp;
/* internal */
long long lim_accu;

2
kernel/sy_old/mars_proc.c
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@ -208,6 +208,8 @@ EXPORT_SYMBOL_GPL(mars_max_loadavg);
VEC_ENTRY(NAME, VAR, MODE, 1)
#define LIMITER_ENTRIES(VAR, PREFIX, SUFFIX) \
INT_ENTRY(PREFIX "_total_ops_" SUFFIX, (VAR)->lim_total_ops, 0400), \
INT_ENTRY(PREFIX "_total_sum_" SUFFIX, (VAR)->lim_total_sum, 0400), \
INT_ENTRY(PREFIX "_ratelimit_" SUFFIX, (VAR)->lim_max_rate, 0600), \
INT_ENTRY(PREFIX "_maxdelay_ms", (VAR)->lim_max_delay,0600), \
INT_ENTRY(PREFIX "_minwindow_ms", (VAR)->lim_min_window,0600), \