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storaged: fix excessive accounting when io usage has negative delta 

When current io bytes are smaller than previous bytes, add 0 to delta
instead of adding current io bytes.

Bug: 64317562
Merged-In: If0c9814892ad61b790baa6395649af10b11d5b7c
Change-Id: I1ffd7ac33649ab3b8405c83b1328fa9bf49702c0
This commit is contained in:
Jin Qian 2017-08-02 17:37:40 -07:00
parent 3bb2dfd252
commit ccae2b5779
1 changed files with 4 additions and 4 deletions
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8
storaged/storaged_uid_monitor.cpp
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@ -228,13 +228,13 @@ void uid_monitor::update_curr_io_stats_locked()
last_uid_io_stats[uid.uid].io[BACKGROUND].write_bytes;
usage.bytes[READ][FOREGROUND][charger_stat] +=
(fg_rd_delta < 0) ? uid.io[FOREGROUND].read_bytes : fg_rd_delta;
(fg_rd_delta < 0) ? 0 : fg_rd_delta;
usage.bytes[READ][BACKGROUND][charger_stat] +=
(bg_rd_delta < 0) ? uid.io[BACKGROUND].read_bytes : bg_rd_delta;
(bg_rd_delta < 0) ? 0 : bg_rd_delta;
usage.bytes[WRITE][FOREGROUND][charger_stat] +=
(fg_wr_delta < 0) ? uid.io[FOREGROUND].write_bytes : fg_wr_delta;
(fg_wr_delta < 0) ? 0 : fg_wr_delta;
usage.bytes[WRITE][BACKGROUND][charger_stat] +=
(bg_wr_delta < 0) ? uid.io[BACKGROUND].write_bytes : bg_wr_delta;
(bg_wr_delta < 0) ? 0 : bg_wr_delta;
}
last_uid_io_stats = uid_io_stats;