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469c76a83b
After the commitb4943b8bfc("perf/x86/rapl: Add core energy counter support for AMD CPUs"), the default "perf record"/"perf top" command is broken in systems where there isn't a PMU registered for type PERF_TYPE_RAW. This is due to the change in order of error checks in rapl_pmu_event_init() Due to which we return -EINVAL instead of -ENOENT, when we reach here from the fallback loop in perf_init_event(). Move the "PMU and event type match" back to the beginning of the function so that we return -ENOENT early on. Closes: https://lore.kernel.org/all/uv7mz6vew2bzgre5jdpmwldxljp5djzmuiksqdcdwipfm4zm7w@ribobcretidk/ Fixes:b4943b8bfc("perf/x86/rapl: Add core energy counter support for AMD CPUs") Reported-by: Koichiro Den <koichiro.den@canonical.com> Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20250129080513.30353-1-dhananjay.ugwekar@amd.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.