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ANDROID: uid_sys_stats: account for fsync syscalls

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Change-Id: Ie888d8a0f4ec7a27dea86dc4afba8e6fd4203488
Signed-off-by: Jin Qian <jinqian@google.com>
This commit is contained in:
Jin Qian 2017-03-02 13:39:43 -08:00 committed by Amit Pundir
parent 0d1e81ffe0
commit 16d838d2c9
1 changed files with 9 additions and 2 deletions
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11
drivers/misc/uid_sys_stats.c
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@ -39,6 +39,7 @@ struct io_stats {
u64 write_bytes;
u64 rchar;
u64 wchar;
u64 fsync;
};
#define UID_STATE_FOREGROUND 0
@ -217,6 +218,7 @@ static void add_uid_io_curr_stats(struct uid_entry *uid_entry,
io_curr->write_bytes += compute_write_bytes(task);
io_curr->rchar += task->ioac.rchar;
io_curr->wchar += task->ioac.wchar;
io_curr->fsync += task->ioac.syscfs;
}
static void clean_uid_io_last_stats(struct uid_entry *uid_entry,
@ -228,6 +230,7 @@ static void clean_uid_io_last_stats(struct uid_entry *uid_entry,
io_last->write_bytes -= compute_write_bytes(task);
io_last->rchar -= task->ioac.rchar;
io_last->wchar -= task->ioac.wchar;
io_last->fsync -= task->ioac.syscfs;
}
static void update_io_stats_locked(void)
@ -264,11 +267,13 @@ static void update_io_stats_locked(void)
io_curr->write_bytes - io_last->write_bytes;
io_bucket->rchar += io_curr->rchar - io_last->rchar;
io_bucket->wchar += io_curr->wchar - io_last->wchar;
io_bucket->fsync += io_curr->fsync - io_last->fsync;
io_last->read_bytes = io_curr->read_bytes;
io_last->write_bytes = io_curr->write_bytes;
io_last->rchar = io_curr->rchar;
io_last->wchar = io_curr->wchar;
io_last->fsync = io_curr->fsync;
}
}
@ -282,7 +287,7 @@ static int uid_io_show(struct seq_file *m, void *v)
update_io_stats_locked();
hash_for_each(hash_table, bkt, uid_entry, hash) {
seq_printf(m, "%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
seq_printf(m, "%d %llu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
uid_entry->uid,
uid_entry->io[UID_STATE_FOREGROUND].rchar,
uid_entry->io[UID_STATE_FOREGROUND].wchar,
@ -291,7 +296,9 @@ static int uid_io_show(struct seq_file *m, void *v)
uid_entry->io[UID_STATE_BACKGROUND].rchar,
uid_entry->io[UID_STATE_BACKGROUND].wchar,
uid_entry->io[UID_STATE_BACKGROUND].read_bytes,
uid_entry->io[UID_STATE_BACKGROUND].write_bytes);
uid_entry->io[UID_STATE_BACKGROUND].write_bytes,
uid_entry->io[UID_STATE_FOREGROUND].fsync,
uid_entry->io[UID_STATE_BACKGROUND].fsync);
}
mutex_unlock(&uid_lock);