From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 5 Oct 2023 01:19:55 +0000 (-0700)
Subject: Merge tag 'rtla-v6.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bristot... 
X-Git-Tag: v6.6.7~1790
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3006adf3be79cde4d14b1800b963b82b6e5572e0;p=platform%2Fkernel%2Flinux-starfive.git

Merge tag 'rtla-v6.6-fixes' of git://git./linux/kernel/git/bristot/linux

Pull rtla fixes from Daniel Bristot de Oliveira:
 "rtla (Real-Time Linux Analysis) tool fixes.

  Timerlat auto-analysis:

   - Timerlat is reporting thread interference time without thread noise
     events occurrence. It was caused because the thread interference
     variable was not reset after the analysis of a timerlat activation
     that did not hit the threshold.

   - The IRQ handler delay is estimated from the delta of the IRQ
     latency reported by timerlat, and the timestamp from IRQ handler
     start event. If the delta is near-zero, the drift from the external
     clock and the trace event and/or the overhead can cause the value
     to be negative. If the value is negative, print a zero-delay.

   - IRQ handlers happening after the timerlat thread event but before
     the stop tracing were being reported as IRQ that happened before
     the *current* IRQ occurrence. Ignore Previous IRQ noise in this
     condition because they are valid only for the *next* timerlat
     activation.

  Timerlat user-space:

   - Timerlat is stopping all user-space thread if a CPU becomes
     offline. Do not stop the entire tool if a CPU is/become offline,
     but only the thread of the unavailable CPU. Stop the tool only, if
     all threads leave because the CPUs become/are offline.

  man-pages:

   - Fix command line example in timerlat hist man page"

* tag 'rtla-v6.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bristot/linux:
  rtla: fix a example in rtla-timerlat-hist.rst
  rtla/timerlat: Do not stop user-space if a cpu is offline
  rtla/timerlat_aa: Fix previous IRQ delay for IRQs that happens after thread sample
  rtla/timerlat_aa: Fix negative IRQ delay
  rtla/timerlat_aa: Zero thread sum after every sample analysis
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3006adf3be79cde4d14b1800b963b82b6e5572e0