Merge "disp: msm: sde: avoid using spinlock for register log"

	u32 first;

	u32 last;

	u32 last_dump;

	u32 curr;

	atomic64_t curr;

	u32 next;

	u32 enable;

	u32 enable_mask;

	spinlock_t spin_lock;

};

extern struct sde_dbg_reglog *sde_dbg_base_reglog;

void sde_reglog_log(u8 blk_id, u32 val, u32 addr)

{

	unsigned long flags;

	struct sde_dbg_reglog_log *log;

	struct sde_dbg_reglog *reglog = sde_dbg_base_reglog;

	int index;

	if (!reglog)

		return;

	spin_lock_irqsave(&reglog->spin_lock, flags);

	log = &reglog->logs[reglog->curr];

	index = abs(atomic64_inc_return(&reglog->curr) % SDE_REGLOG_ENTRY);

	log = &reglog->logs[index];

	log->blk_id = blk_id;

	log->val = val;

	log->addr = addr;

	log->time = local_clock();

	log->pid = current->pid;

	reglog->curr = (reglog->curr + 1) % SDE_REGLOG_ENTRY;

	reglog->last++;

	spin_unlock_irqrestore(&reglog->spin_lock, flags);

}

/* always dump the last entries which are not dumped yet */

	if (!reglog)

		return ERR_PTR(-ENOMEM);

	spin_lock_init(&reglog->spin_lock);

	atomic64_set(&reglog->curr, 0);

	return reglog;

}