Rebase realtime-tests to the latest upstream

Added 3 patches and updated spec file
Resolves: RHEL-144703

Signed-off-by: John Kacur <jkacur@redhat.com>

.gitignore

@@ -9,3 +9,4 @@
 /rt-tests-2.7.tar.xz
 /rt-tests-2.8.tar.xz
 /rt-tests-2.9.tar.xz
+/rt-tests-2.10.tar.xz

Makefile-Use-relative-symlinks-for-Python-scripts.patch

@@ -0,0 +1,44 @@
+From 1d20e72c398e651e9afa7869281d257fdb263ebf Mon Sep 17 00:00:00 2001
+From: John Kacur <jkacur@redhat.com>
+Date: Fri, 20 Mar 2026 15:02:47 -0400
+Subject: [PATCH 3/3] Makefile: Use relative symlinks for Python scripts
+
+Use ln -rs to create relative symlinks instead of absolute symlinks
+for hwlatdetect and get_cyclictest_snapshot. This fixes RPM build
+warnings and makes the package relocatable.
+
+Absolute symlinks cause issues when:
+- Installing to different prefixes
+- Building in mock/containers
+- Package relocation is needed
+
+Signed-off-by: John Kacur <jkacur@redhat.com>
+---
+ Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 83d2a33ecf05..80c3f1073560 100644
+--- a/Makefile
++++ b/Makefile
+@@ -235,7 +235,7 @@ install_hwlatdetect: hwlatdetect
+ 		mkdir -p "$(DESTDIR)$(bindir)" ; \
+ 		install -D -m 755 src/hwlatdetect/hwlatdetect.py $(DESTDIR)$(PYLIB)/hwlatdetect.py ; \
+ 		rm -f "$(DESTDIR)$(bindir)/hwlatdetect" ; \
+-		ln -s $(PYLIB)/hwlatdetect.py "$(DESTDIR)$(bindir)/hwlatdetect" ; \
++		ln -rs "$(DESTDIR)$(PYLIB)/hwlatdetect.py" "$(DESTDIR)$(bindir)/hwlatdetect" ; \
+ 	fi
+ 
+ .PHONY: install_get_cyclictest_snapshot
+@@ -244,7 +244,7 @@ install_get_cyclictest_snapshot: get_cyclictest_snapshot
+ 		mkdir -p "${DESTDIR}${bindir}" ; \
+ 		install -D -m 755 src/cyclictest/get_cyclictest_snapshot.py ${DESTDIR}${PYLIB}/get_cyclictest_snapshot.py ; \
+ 		rm -f "${DESTDIR}${bindir}/get_cyclictest_snapshot" ; \
+-		ln -s ${PYLIB}/get_cyclictest_snapshot.py "${DESTDIR}${bindir}/get_cyclictest_snapshot" ; \
++		ln -rs "${DESTDIR}${PYLIB}/get_cyclictest_snapshot.py" "${DESTDIR}${bindir}/get_cyclictest_snapshot" ; \
+ 	fi
+ 
+ .PHONY: install_manpages
+-- 
+2.53.0
+

cyclictest-fix-growing-shm-stat-file.patch

@@ -0,0 +1,35 @@
+From f9c82184ce88d8de3ffe588279b0bc41d3887998 Mon Sep 17 00:00:00 2001
+From: Lukas Beckmann <lbckmnn@mailbox.org>
+Date: Sun, 1 Mar 2026 22:24:06 +0100
+Subject: [PATCH 2/3] cyclictest: fix growing shm stat file
+
+On a received USR2 signal, the current statistics are written to a file
+in shared memory. Before that happens, it is truncated to zero to clear
+it.
+
+However, currently the shm file keeps growing with each received signal
+because the seek pointer is not updated by ftruncate.
+
+This is fixed by calling fseek after truncating.
+
+Signed-off-by: Lukas Beckmann <lbckmnn@mailbox.org>
+Signed-off-by: John Kacur <jkacur@redhat.com>
+---
+ src/cyclictest/cyclictest.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c
+index 191945e1e0db..960c90560668 100644
+--- a/src/cyclictest/cyclictest.c
++++ b/src/cyclictest/cyclictest.c
+@@ -1472,6 +1472,7 @@ static void sighand(int sig)
+ 			return;
+ 		}
+ 		rstat_ftruncate(rstat_fd, 0);
++		lseek(rstat_fd, 0, SEEK_SET);
+ 		quiet = 0;
+ 		dprintf(rstat_fd, "#---------------------------\n");
+ 		dprintf(rstat_fd, "# cyclictest current status:\n");
+-- 
+2.53.0
+

realtime-tests.spec

@@ -5,7 +5,7 @@ Name: realtime-tests
 # BuildRequires: numactl-devel
 # Numa argument to make:  NUMA=1
 #
-Version: 2.9
+Version: 2.10
 Release: 1%{?dist}
 License: GPLv2
 URL: https://git.kernel.org/pub/scm/utils/rt-tests/rt-tests.git
@@ -20,6 +20,12 @@ BuildRequires: kernel-headers
 BuildRequires: kernel-tools-libs-devel
 Requires: bash
 Requires: bc
+
+# Patches
+Patch0: rt-tests-hwlatdetect-Add-timestamp-delta.patch
+Patch1: cyclictest-fix-growing-shm-stat-file.patch
+Patch2: Makefile-Use-relative-symlinks-for-Python-scripts.patch
+
 %description
 realtime-tests is a set of programs that test and measure various components of
 real-time kernel behavior. This package measures timer, signal, and hardware
@@ -77,6 +83,11 @@ latency. It also tests the functioning of priority-inheritance mutexes.
 %{_mandir}/man8/determine_maximum_mpps.8.*
 
 %changelog
+* Wed Apr 01 2026 John Kacur <jkacur@redhat.com> - 2.10-1
+- Rebase realtime-tests to the latest upstream
+- Added 3 patches and updated spec file
+Resolves: RHEL-144703
+
 * Wed Jul 9 2025 Tyonnchie Berry <tyberry@redhat.com> - 2.9-1
 - Rebased to latest upstream version
 - Dropped previously applied patches

rt-tests-hwlatdetect-Add-timestamp-delta.patch

@@ -0,0 +1,59 @@
+From 5ced2b87b184f773ae331021c1fa1cda85f43c44 Mon Sep 17 00:00:00 2001
+From: Costa Shulyupin <costa.shul@redhat.com>
+Date: Tue, 10 Mar 2026 01:09:18 +0200
+Subject: [PATCH 1/3] rt-tests: hwlatdetect: Add timestamp delta
+
+Add delta field that calculates the time interval between consecutive
+samples. For the first sample, the previous timestamp is initialized to
+'nan' (Not a Number), so the first delta is also 'nan'.
+
+This helps identify periodic issues during hardware latency testing.
+
+v2:
+Address John Kacur's review comments:
+- Use float('nan') instead of string 'nan' for prev initialization
+- Compute float(ts) once and reuse for delta calculation and prev update
+
+Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
+Signed-off-by: John Kacur <jkacur@redhat.com>
+---
+ src/hwlatdetect/hwlatdetect.py | 11 +++++++----
+ 1 file changed, 7 insertions(+), 4 deletions(-)
+
+diff --git a/src/hwlatdetect/hwlatdetect.py b/src/hwlatdetect/hwlatdetect.py
+index 42b9f301718a..18ca930487f0 100755
+--- a/src/hwlatdetect/hwlatdetect.py
++++ b/src/hwlatdetect/hwlatdetect.py
+@@ -253,7 +253,8 @@ class Tracer(Detector):
+ 
+     class Sample:
+         'private class for tracer sample data'
+-        __slots__ = 'cpu', 'timestamp', 'inner', 'outer', 'count'
++        __slots__ = 'cpu', 'timestamp', 'delta', 'inner', 'outer', 'count'
++        prev = float('nan')
+ 
+         def __init__(self, line):
+             fields = line.split()
+@@ -276,14 +277,16 @@ class Tracer(Detector):
+             i, o = fields[6].split('/')
+             ts = fields[7][3:]
+             self.timestamp = str(ts)
++            ts_float = float(ts)
++            self.delta = ts_float - self.__class__.prev
++            self.__class__.prev = ts_float
+             self.inner = int(i)
+             self.outer = int(o)
+             self.count = int(kv["count"]) if "count" in kv else None
+ 
+         def __str__(self):
+-            if self.count is not None:
+-                return f"ts: {self.timestamp}, inner:{self.inner}, outer:{self.outer}, cpu:{self.cpu}, count:{self.count}"
+-            return f"ts: {self.timestamp}, inner:{self.inner}, outer:{self.outer}, cpu:{self.cpu}"
++            s = f"ts: {self.timestamp}, delta:{self.delta:.6f}, inner:{self.inner}, outer:{self.outer}, cpu:{self.cpu}"
++            return s if self.count is None else s + f", count:{self.count}"
+ 
+         def display(self):
+             """ convert object to string and print """
+-- 
+2.53.0
+

sources

@@ -1 +1 @@
-SHA512 (rt-tests-2.9.tar.xz) = 7e7fe2bc8833891900c9c29ad1e0b188003bcdbd40aeb2412153fef3d5f2157a8a3964d46060e9e12ffc200e66dcfb55f78b8df3163ed33116e9b834e4f3113f
+SHA512 (rt-tests-2.10.tar.xz) = 11a9ea73c28f01aa70542664e78694eac27ae3c4217969f03f9cc1ddb0720fba44f6378a9d44ea9ecc92025368873b7fe5111bf4f5395e47ae5527ddefdb113b