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    SubjectRe: [PATCH 2/3] perf: Add support for extra parameters for raw events
    On 11/11/2010 10:39 AM, Andi Kleen wrote:
    >
    >> It's not clear to me that a comma is the best character to use in this
    >> instance, because multiple events can be listed after the -e separated
    >> by commas as well, for example: -e rXXXX,cycles.
    >> -e rXXXX,YYYY,cycles would be confusing to read.
    >>
    >> How about -e rXXXX[+YYYY]
    >
    > That's a good point. The comma seems to work in my testing though for
    > some reason, but I guess
    > I broke the multiple events case then. I'll switch over to +
    >
    > -Andi
    >


    I think it would have parsed OK, but it is a confusing syntax to look
    at. I should point out that there are also the u,k,h modifiers which
    can be specified, even on raw events, so the full syntax looks something
    like:

    -e rXXXX[+YYYY][:u|:k|:h]

    - Corey


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