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    Subject[PATCH v2 03/10] drivers: qcom: rpmh-rsc: log RPMH requests in FTRACE
    Date
    Log sent RPMH requests and interrupt responses in FTRACE.

    Cc: Steven Rostedt <rostedt@goodmis.org>
    Signed-off-by: Lina Iyer <ilina@codeaurora.org>
    ---
    drivers/soc/qcom/Makefile | 1 +
    drivers/soc/qcom/rpmh-rsc.c | 6 +++
    drivers/soc/qcom/trace-rpmh.h | 89 +++++++++++++++++++++++++++++++++++++++++++
    3 files changed, 96 insertions(+)
    create mode 100644 drivers/soc/qcom/trace-rpmh.h

    diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
    index 7426979ea9fb..094b639ece2f 100644
    --- a/drivers/soc/qcom/Makefile
    +++ b/drivers/soc/qcom/Makefile
    @@ -1,4 +1,5 @@
    # SPDX-License-Identifier: GPL-2.0
    +CFLAGS_trace-rpmh.o := -I$(src)
    obj-$(CONFIG_QCOM_GLINK_SSR) += glink_ssr.o
    obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
    obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o
    diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
    index ceb8aea237d6..58a3c53d651e 100644
    --- a/drivers/soc/qcom/rpmh-rsc.c
    +++ b/drivers/soc/qcom/rpmh-rsc.c
    @@ -24,6 +24,9 @@

    #include "rpmh-internal.h"

    +#define CREATE_TRACE_POINTS
    +#include "trace-rpmh.h"
    +
    #define RSC_DRV_TCS_OFFSET 672
    #define RSC_DRV_CMD_OFFSET 20

    @@ -239,6 +242,7 @@ static irqreturn_t tcs_irq_handler(int irq, void *p)
    /* Reclaim the TCS */
    write_tcs_reg(drv, RSC_DRV_CMD_ENABLE, m, 0, 0);
    write_tcs_reg(drv, RSC_DRV_IRQ_CLEAR, 0, 0, BIT(m));
    + trace_rpmh_notify_irq(drv, resp);
    atomic_set(&drv->tcs_in_use[m], 0);
    send_tcs_response(resp);
    }
    @@ -270,6 +274,7 @@ static void tcs_notify_tx_done(unsigned long data)
    struct tcs_response, list);
    list_del(&resp->list);
    spin_unlock_irqrestore(&drv->drv_lock, flags);
    + trace_rpmh_notify_tx_done(drv, resp);
    free_response(resp);
    }
    }
    @@ -298,6 +303,7 @@ static void __tcs_buffer_write(struct rsc_drv *drv, int m, int n,
    write_tcs_reg(drv, RSC_DRV_CMD_MSGID, m, n + i, msgid);
    write_tcs_reg(drv, RSC_DRV_CMD_ADDR, m, n + i, cmd->addr);
    write_tcs_reg(drv, RSC_DRV_CMD_DATA, m, n + i, cmd->data);
    + trace_rpmh_send_msg(drv, m, n + i, msgid, cmd);
    }

    write_tcs_reg(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, m, 0, cmd_complete);
    diff --git a/drivers/soc/qcom/trace-rpmh.h b/drivers/soc/qcom/trace-rpmh.h
    new file mode 100644
    index 000000000000..734de0d54a9f
    --- /dev/null
    +++ b/drivers/soc/qcom/trace-rpmh.h
    @@ -0,0 +1,89 @@
    +/* SPDX-License-Identifier: GPL-2.0 */
    +/*
    + * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
    + */
    +
    +#if !defined(_TRACE_RPMH_H) || defined(TRACE_HEADER_MULTI_READ)
    +#define _TRACE_RPMH_H
    +
    +#undef TRACE_SYSTEM
    +#define TRACE_SYSTEM rpmh
    +
    +#include <linux/tracepoint.h>
    +#include "rpmh-internal.h"
    +
    +DECLARE_EVENT_CLASS(rpmh_notify,
    +
    + TP_PROTO(struct rsc_drv *d, struct tcs_response *r),
    +
    + TP_ARGS(d, r),
    +
    + TP_STRUCT__entry(
    + __field(const char *, d->name)
    + __field(int, m)
    + __field(u32, addr)
    + __field(int, errno)
    + ),
    +
    + TP_fast_assign(
    + __entry->name = d->name;
    + __entry->m = r->m;
    + __entry->addr = r->msg->payload[0].addr;
    + __entry->errno = r->err;
    + ),
    +
    + TP_printk("%s: ack: tcs-m:%d addr: 0x%08x errno: %d",
    + __entry->name, __entry->m, __entry->addr, __entry->errno)
    +);
    +
    +DEFINE_EVENT(rpmh_notify, rpmh_notify_irq,
    + TP_PROTO(struct rsc_drv *d, struct tcs_response *r),
    + TP_ARGS(d, r)
    +);
    +
    +DEFINE_EVENT(rpmh_notify, rpmh_notify_tx_done,
    + TP_PROTO(struct rsc_drv *d, struct tcs_response *r),
    + TP_ARGS(d, r)
    +);
    +
    +
    +TRACE_EVENT(rpmh_send_msg,
    +
    + TP_PROTO(struct rsc_drv *d, int m, int n, u32 h, struct tcs_cmd *c),
    +
    + TP_ARGS(d, m, n, h, c),
    +
    + TP_STRUCT__entry(
    + __field(const char*, d->name)
    + __field(int, m)
    + __field(int, n)
    + __field(u32, hdr)
    + __field(u32, addr)
    + __field(u32, data)
    + __field(bool, complete)
    + ),
    +
    + TP_fast_assign(
    + __entry->name = s;
    + __entry->m = m;
    + __entry->n = n;
    + __entry->hdr = h;
    + __entry->addr = c->addr;
    + __entry->data = c->data;
    + __entry->complete = c->complete;
    + ),
    +
    + TP_printk("%s: send-msg: tcs(m): %d cmd(n): %d msgid: 0x%08x addr: 0x%08x data: 0x%08x complete: %d",
    + __entry->name, __entry->m, __entry->n, __entry->hdr,
    + __entry->addr, __entry->data, __entry->complete)
    +);
    +
    +#endif /* _TRACE_RPMH_H */
    +
    +#undef TRACE_INCLUDE_PATH
    +#define TRACE_INCLUDE_PATH ../../drivers/soc/qcom
    +
    +#undef TRACE_INCLUDE_FILE
    +#define TRACE_INCLUDE_FILE trace-rpmh
    +
    +#include <trace/define_trace.h>
    --
    The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
    a Linux Foundation Collaborative Project
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