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LDBAR holds the memory address allocated for each cpu. For thread-imc the mode bit (i.e bit 1) of LDBAR is set to accumulation. Currently, ldbar is loaded with per cpu memory address and mode set to accumulation at boot time. To enable trace-imc, the mode bit of ldbar should be set to 'trace'. So to accommodate trace-mode of IMC, reposition setting of ldbar for thread-imc to thread_imc_event_add(). Also reset ldbar at thread_imc_event_del(). Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com> Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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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.