87c9741a38
Currently on a very large system with 1780 CPUs, hv_acpi_init() takes around 3 seconds to complete. This is because of sequential synic initialization for each CPU performed by hv_synic_init(). Schedule these tasks parallelly so that each CPU executes hv_synic_init() in parallel to take full advantage of multiple CPUs. This solution saves around 2 seconds of boot time on a 1780 CPU system, which is around 66% improvement in the existing logic. Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by: Srivatsa S. Bhat (Microsoft) <srivatsa@csail.mit.edu> Reviewed-by: Dexuan Cui <decui@microsoft.com> Link: https://lore.kernel.org/r/1722488136-6223-1-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1722488136-6223-1-git-send-email-ssengar@linux.microsoft.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.