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  1. RHEL
  2. RHEL-141072

glibc: Include glibc trylock patch fix in RHEL update releases. [rhel-9]

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      This is a clone of issue RHEL-139419 to use for version rhel-9.8
      –
      Original description:
      Please include following patch in RHEL update releases. We see significant performance improvement in high cache contention workload.

      This patch is already backported all the way till 2.28.

      commit 63716823dbad9482e09972907ae98e9cb00f9b86
Author: Sunil K Pandey <sunil.k.pandey@intel.com>
Date:   Tue Dec 9 08:57:44 2025 -0800

    nptl: Optimize trylock for high cache contention workloads (BZ #33704)
    
    Check lock availability before acquisition to reduce cache line
    bouncing.  Significantly improves trylock throughput on multi-core
    systems under heavy contention.
    
    Tested on x86_64.
    
    Fixes BZ #33704.
    
    Co-authored-by: Alex M Wells <alex.m.wells@intel.com>
    Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

              glibc-bugzilla Platform Tools - Libraries Bot
              watson-automation Watson Automation
              Platform Tools - Libraries Bot Platform Tools - Libraries Bot
              Sergey Kolosov Sergey Kolosov
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