https://lwn.net/Articles/1030842/ This is a special feed containing comments posted to the individual LWN article titled "A proxy-execution baby step". en-us Thu, 25 Sep 2025 16:04:57 +0000 Thu, 25 Sep 2025 16:04:57 +0000 https://www.rssboard.org/rss-specification lwn@lwn.net https://lwn.net/Articles/1032939/ https://lwn.net/Articles/1032939/ ReDress <div class="FormattedComment"> "...Priority inversion comes about when a low-priority task holds a resource that is also needed by a high-priority task, preventing the latter from running. This problem is made much worse if the low-priority task is unable to gain access to the CPU and, as a result, cannot complete its work and free the resources it holds. Proxy execution is a potential solution to this problem, but it is a complex solution that has been under development for several years; LWN first looked at it in 2020. The 6.17 kernel is likely to contain an important step forward for this long-running project..."<br> <p> From the problem description, this sounds exactly like the problem PI futex solves but for userspace.<br> </div> Fri, 08 Aug 2025 09:34:23 +0000 https://lwn.net/Articles/1031981/ https://lwn.net/Articles/1031981/ nksingh <div class="FormattedComment"> Sounds like the handoff implied by the last couple paragraphs is a recipe for lock convoy. <br> </div> Thu, 31 Jul 2025 04:29:59 +0000