[PATCH 14/23] tuna: Add -U and -K to the move command

John Kacur
2025-11-07T18:58:14Z

Add the following options to the move command (like in the show_threads
command)
-U, --no_uthreads Operations will not affect user threads
-K, --no_kthreads Operations will not affect kernel threads

Signed-off-by: John Kacur <jkacur@redhat.com>
---
tuna-cmd.py | 4 +++-
tuna/tuna.py | 7 ++++++-
2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tuna-cmd.py b/tuna-cmd.py
index 9496c61f0c2b..d0a3e6b7dbf8 100755
--- a/tuna-cmd.py
+++ b/tuna-cmd.py
@@ -174,6 +174,8 @@ def gen_parser():
move_group.add_argument('-N', '--nohz_full', **MODS['nohz_full'])
move.add_argument('-t', '--threads', **MODS['threads'])
move.add_argument('-q', '--irqs', **MODS['irqs'])
+ move.add_argument('-U', '--no_uthreads', **MODS['no_uthreads'])
+ move.add_argument('-K', '--no_kthreads', **MODS['no_kthreads'])

spread_group = spread.add_mutually_exclusive_group(required=True)
spread_group.add_argument('-c', '--cpus', **MODS['cpus'])
@@ -746,7 +748,7 @@ def main():
parser.error(f"tuna: {args.command} requires a thread/irq list!\n")

if args.thread_list:
- tuna.move_threads_to_cpu(args.cpu_list, args.thread_list, spread=spread)
+ tuna.move_threads_to_cpu(args.cpu_list, args.thread_list, args.uthreads, args.kthreads, spread=spread)

if args.irq_list:
tuna.move_irqs_to_cpu(args.cpu_list, args.irq_list, spread=spread)
diff --git a/tuna/tuna.py b/tuna/tuna.py
index 1380df0dadba..ef60c033362d 100755
--- a/tuna/tuna.py
+++ b/tuna/tuna.py
@@ -174,7 +174,7 @@ def is_hardirq_handler(self, pid):
except:
return False

-def move_threads_to_cpu(cpus, pid_list, set_affinity_warning=None, spread=False):
+def move_threads_to_cpu(cpus, pid_list, show_uthreads, show_kthreads, set_affinity_warning=None, spread=False):
changed = False

ps = procfs.pidstats()
@@ -183,6 +183,11 @@ def move_threads_to_cpu(cpus, pid_list, set_affinity_warning=None, spread=False)
new_affinity = cpus
last_cpu = max(cpus) + 1
for pid in pid_list:
+ iskth = iskthread(pid)
+ if not show_uthreads and not iskth:
+ continue
+ if not show_kthreads and iskth:
+ continue
if spread:
new_affinity = [cpus[cpu_idx]]
cpu_idx += 1
--
2.51.1