On 06/09/2021 11:28, Leo Yan wrote:

Hi Suzuki,

On Mon, Sep 06, 2021 at 10:51:02AM +0100, Suzuki Kuruppassery Poulose wrote:

quoted

Hi Leo


On 05/09/2021 14:12, Leo Yan wrote:

quoted

Commit 2f01c200d440 ("perf cs-etm: Remove callback cs_etm_find_snapshot()")
has removed the function cs_etm_find_snapshot() from the perf tool in the
user space, now CoreSight trace directly uses the perf common function
__auxtrace_mmap__read() to calcualte the head and size for AUX trace data
in snapshot mode.

Updates the comments in drivers to reflect the changes.

As such I would avoid referencing "userspace" function names in the
kernel driver. Please could we remove it or make it generic ?

Okay, I'd like to remove the specific function name from the comment so
can make the comment generic as:

"User space will figure out how many bytes to get from the AUX buffer
based on the position of the head."

Yes please, that sounds perfect.

Cheers
Suzuki

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