From: Andi Shyti <andi.shyti@kernel.org>
To: Praveen Talari <praveen.talari@oss.qualcomm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>,
Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>,
linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org,
aniket.randive@oss.qualcomm.com,
chandana.chiluveru@oss.qualcomm.com,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Subject: Re: [PATCH v2 0/2] Add trace events for Qualcomm GENI I2C drivers
Date: Wed, 29 Jul 2026 00:01:35 +0200 [thread overview]
Message-ID: <amkmqdFyxlYsNfuS@zenone.zhora.eu> (raw)
In-Reply-To: <20260703-add-tracepoints-for-qcom-geni-i2c-v2-0-e8bf8b178290@oss.qualcomm.com>
Hi Praveen,
On Fri, Jul 03, 2026 at 08:38:08PM +0530, Praveen Talari wrote:
> Add a new trace event header providing tracepoints for the Qualcomm
> GENI I2C controller.
>
> The trace events cover controller bus setup, interrupt status and
> error reporting. These events enable structured debugging and performance
> analysis using ftrace.
>
> Usage examples:
>
> Enable all I2C traces:
> echo 1 > /sys/kernel/tracing/events/i2c/enable
> echo 1 > /sys/kernel/tracing/events/qcom_geni_i2c/enable
>
> cat /sys/kernel/debug/tracing/trace_pipe
>
> Example trace output:
> 79.737075: i2c_write: i2c-11 #0 a=057 f=0200 l=3 [00-00-3f]
> 79.737075: geni_i2c_bus_setup: a90000.i2c: clk_freq=400000 clk_div=2
> t_high=5 t_low=11 t_cycle=22
> 79.737084: geni_i2c_irq: a90000.i2c: m_stat=0x40000000 rx_st=0x00000000
> dm_tx=0x00000000 dm_rx=0x00000000
> 79.737201: geni_i2c_irq: a90000.i2c: m_stat=0x00000001 rx_st=0x00000000
> dm_tx=0x00000000 dm_rx=0x00000000
> 79.737211: i2c_result: i2c-11 n=1 ret=1
>
> Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
merged to i2c/i2c.
Thanks,
Andi
prev parent reply other threads:[~2026-07-28 22:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-03 15:08 [PATCH v2 0/2] Add trace events for Qualcomm GENI I2C drivers Praveen Talari
2026-07-03 15:08 ` [PATCH v2 1/2] i2c: qcom-geni: trace: Add trace events for Qualcomm GENI I2C Praveen Talari
2026-07-03 15:08 ` [PATCH v2 2/2] i2c: qcom-geni: Add trace events for Qualcomm GENI I2C driver Praveen Talari
2026-07-28 22:01 ` Andi Shyti [this message]
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