3241d46f5f
The mrvl_ddr_pmu is uncore and has a hexadecimal address suffix while the previous PMU sorting/merging code assumes uncore PMU names start with uncore_ and have a decimal suffix. Because of the previous assumption it isn't possible to wildcard the mrvl_ddr_pmu. Modify pmu_name_len_no_suffix but also remove the suffix number out argument, this is because we don't know if a suffix number of say 100 is in hexadecimal or decimal. As the only use of the suffix number is in comparisons, it is safe there to compare the values as hexadecimal. Modify perf_pmu__match_ignoring_suffix so that hexadecimal suffixes are ignored. Only allow hexadecimal suffixes to be greater than length 2 (ie 3 or more) so that S390's cpum_cf PMU doesn't lose its suffix. Change the return type of pmu_name_len_no_suffix to size_t to workaround GCC incorrectly determining the result could be negative. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Will Deacon <will@kernel.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Bharat Bhushan <bbhushan2@marvell.com> Cc: Bhaskara Budiredla <bbudiredla@marvell.com> Cc: Tuan Phan <tuanphan@os.amperecomputing.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240515060114.3268149-2-irogers@google.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.