Messages in this thread | | | Subject | Re: [PATCH v4] Use more flexible pattern matching for CPU identification for mapfile.csv | From | Ravi Bangoria <> | Date | Tue, 5 Dec 2017 09:25:56 +0530 |
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On 12/04/2017 08:27 PM, William Cohen wrote: > The powerpc cpuid information includes chip revision information. > Changes between chip revisions are usually minor bug fixes and usually > do not affect the operation of the performance monitoring hardware. > The original mapfile.csv matching requires enumerating every possible > cpuid string. When a new minor chip revision is produced a new entry > has to be added to the mapfile.csv and the code recompiled to allow > perf to have the implementation specific perf events for this new > minor revision. For users of various distibutions of Linux having to > wait for a new release of the kernel's perf tool to be built with > these trivial patches is inconvenient. >
Tested-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Thanks, Ravi
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