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Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -68,6 +68,17 @@ Major new features: to be used by compilers for optimizing usage of 'memcmp' when its return value is only used for its boolean status. +* Support for automatically registering threads with the Linux rseq + system call has been added. This system call is implemented starting + from Linux 4.18. The Restartable Sequences ABI accelerates user-space + operations on per-cpu data. It allows user-space to perform updates + on per-cpu data without requiring heavy-weight atomic operations. + Automatically registering threads allows all libraries, including + libc, to make immediate use of the rseq support by using the + documented ABI, via the __rseq_flags, __rseq_offset, and __rseq_size + variables. The GNU C Library manual has details on integration of + Restartable Sequences. + Deprecated and removed features, and other changes affecting compatibility: * The r_version update in the debugger interface makes the glibc binary |