Next to its use, which is always as an argument, we include the name
of the parameter in a constant. This completes a partially
implemented cleanup suggested in an earlier commit.
The configure.ac script uses backslash plus in its grep patterns to
match one or more occurrences. This is a GNU grep extension to the
Basic Regular Expressions syntax that fails on systems with a more
traditional grep. This changes fixes grep patterns that use backslash
plus to use a star instead.
This change replaces direct comparisons of Pthread thread IDs with
calls to pthread_equal. Directly comparing thread IDs is neither
portable nor reliable since a thread ID is defined as an opaque type
that can be implemented using a structure.
This updates the configuration script to set the default page size to
64KiB on Aarch64 Linux. This is motivated by compatibility as a build
configured for a 64KiB page will work on kernels that use the smaller
4KiB or 16KiB pages, whereas the reverse is not true.
To make the configured page size setting more visible, the script now
displays the page size when printing the configuration results.
Users that want to override the page size in to choose a smaller value
can still do so with the --with-lg-pagesize configuration option.
The static inline definition made more sense when these functions just
dispatched to a syscall wrapper. Since they acquired a retry loop, a
non-inline definition makes more sense.
An include of unistd.h is needed to make the declaration of the
syscall function visible to the compiler. The include of sys/mman.h
is not used at all.
When the dehugify functionality was retired in an previous commit, a
dehugify-related function and global variable in a test was
accidentally left in-place causing builds that add -Werror to CFLAGS
to fail.
Giving the advice MADV_DONTNEED to a range of virtual memory backed by
a transparent huge page already causes that range of virtual memory to
become backed by regular pages.
When hugepage is enabled and PAGESIZE is large, the test could
ask for a stack size larger than user limit. Allocating the
memory instead can avoid the failure.
