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On IBM Power9, perf watchpoint tests fail since no hardware breakpoints are available. Detect this by checking the error returned by perf_event_open() and skip the tests in that case. Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Ian Rogers <irogers@google.com> Reviewed-by: Kajol Jain<kjain@linux.ibm.com> Tested-by: Kajol Jain<kjain@linux.ibm.com> Link: https://lore.kernel.org/r/20221121102747.208289-1-naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org
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 Restructured Text 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.