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commit7c7ad626d9upstream. when removing a cfs_rq from the list we only check _sum value so we must ensure that _avg and _sum stay synced so load_sum can't be null whereas load_avg is not after propagating load in the cgroup hierarchy. Use load_avg to compute load_sum similarly to what is done for util_sum and runnable_sum. Fixes:0e2d2aaaae("sched/fair: Rewrite PELT migration propagation") Reported-by: Odin Ugedal <odin@uged.al> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Odin Ugedal <odin@uged.al> Link: https://lkml.kernel.org/r/20210527122916.27683-2-vincent.guittot@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.