linux-kernel - Re: [PATCH v4 01/10] Use IDR to maintain all the enabled sources' paths.

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Message-ID: <YjxjXnXAXVXfZqr/@kroah.com>
Date:   Thu, 24 Mar 2022 13:26:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Mao Jinlong <quic_jinlmao@...cinc.com>
Cc:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Tao Zhang <quic_taozha@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Hao Zhang <quic_hazha@...cinc.com>,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v4 01/10] Use IDR to maintain all the enabled sources'
 paths.

On Thu, Mar 24, 2022 at 08:17:25PM +0800, Mao Jinlong wrote:
> Use hash length of the source's device name to map to the pointer
> of the enabled path. Using IDR will be more efficient than using
> the list. And there could be other sources except STM and CPU etms
> in the new HWs. It is better to maintain all the paths together.
> 
> Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
> ---
>  drivers/hwtracing/coresight/coresight-core.c | 75 +++++++-------------
>  1 file changed, 26 insertions(+), 49 deletions(-)

Your subject line is odd.  Please put back the driver subsystem in the
subject line so that it makes more sense.

And how have you measured "more efficient"?

thanks,

greg k-h