4f50c26c01
This is a snapshot of the mmc module taken as of msm-4.14 commit <9fa809c70c96>. This change contains the MMC driver's changes for merging from kernel version msm-4.14 to msm-4.19. Change-Id: I89fa8d5681d18290bbaf8b500f2e7f4a8aebbd89 Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
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*/
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#ifndef __MMC_RING_BUFFER__
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#define __MMC_RING_BUFFER__
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#include <linux/mmc/card.h>
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#include <linux/smp.h>
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#include "core.h"
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#define MMC_TRACE_RBUF_SZ_ORDER 2 /* 2^2 pages */
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#define MMC_TRACE_RBUF_SZ (PAGE_SIZE * (1 << MMC_TRACE_RBUF_SZ_ORDER))
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#define MMC_TRACE_EVENT_SZ 256
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#define MMC_TRACE_RBUF_NUM_EVENTS (MMC_TRACE_RBUF_SZ / MMC_TRACE_EVENT_SZ)
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struct mmc_host;
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struct mmc_trace_buffer {
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int wr_idx;
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bool stop_tracing;
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spinlock_t trace_lock;
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char *data;
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};
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#ifdef CONFIG_MMC_RING_BUFFER
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void mmc_stop_tracing(struct mmc_host *mmc);
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void mmc_trace_write(struct mmc_host *mmc, const char *fmt, ...);
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void mmc_trace_init(struct mmc_host *mmc);
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void mmc_trace_free(struct mmc_host *mmc);
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void mmc_dump_trace_buffer(struct mmc_host *mmc, struct seq_file *s);
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#else
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static inline void mmc_stop_tracing(struct mmc_host *mmc) {}
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static inline void mmc_trace_write(struct mmc_host *mmc,
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const char *fmt, ...) {}
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static inline void mmc_trace_init(struct mmc_host *mmc) {}
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static inline void mmc_trace_free(struct mmc_host *mmc) {}
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static inline void mmc_dump_trace_buffer(struct mmc_host *mmc,
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struct seq_file *s) {}
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#endif
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#define MMC_TRACE(mmc, fmt, ...) \
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mmc_trace_write(mmc, fmt, ##__VA_ARGS__)
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#endif /* __MMC_RING_BUFFER__ */
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