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e2d88788d5
This patch adds a new sysfs node (latency_hist) and reports IO (svc time) latency histograms. Disabled by default, can be enabled by echoing 0 into latency_hist, stats can be cleared by writing 2 into latency_hist. This commit fixes the 32 bit build breakage in the previous commit. Tested on both 32 bit and 64 bit arm devices. (Merged from android4.4-common). Bug: 30677035 Change-Id: I9403ea093f4cd54ebae08f12a11d01ef153118d0 Signed-off-by: Mohan Srinivasan <srmohan@google.com>
31 lines
905 B
C
31 lines
905 B
C
/*
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* linux/drivers/mmc/core/host.h
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*
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* Copyright (C) 2003 Russell King, All Rights Reserved.
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* Copyright 2007 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _MMC_CORE_HOST_H
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#define _MMC_CORE_HOST_H
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#include <linux/mmc/host.h>
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#define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev)
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int mmc_register_host_class(void);
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void mmc_unregister_host_class(void);
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void mmc_retune_enable(struct mmc_host *host);
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void mmc_retune_disable(struct mmc_host *host);
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void mmc_retune_hold(struct mmc_host *host);
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void mmc_retune_release(struct mmc_host *host);
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int mmc_retune(struct mmc_host *host);
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void mmc_latency_hist_sysfs_init(struct mmc_host *host);
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void mmc_latency_hist_sysfs_exit(struct mmc_host *host);
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#endif
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