This is one of the setup grub settings:
[root@aryabhata-207|ccdublk_b_ms13.1.0.3|~]# cat /proc/cmdline
BOOT_IMAGE=(hd5,gpt2)/vmlinuz-4.18.0-372.32.1.rt7.189.el8_6.x86_64 ro crashkernel=auto resume=UUID=561808da-0d75-4e70-8e26-5efe13c45aa3 rhgb quiet
processor.max_cstate=1 intel_idle.max_cstate=0 intel_pstate=disable intel_iommu=on iommu=pt usbcore.autosuspend=-1 selinux=0 enforcing=0 nmi_watchdog=0
crashkernel=1G softlockup_panic=0 mce=off hugepagesz=1G hugepages=50 hugepagesz=2M hugepages=0 default_hugepagesz=1G kthread_cpus=0-1,32-33 irqaffinity=0-1,32-33
systemd.cpu_affinity=0,1,32,33 nohz=on rcu_nocb_poll rcupdate.rcu_normal_after_boot=1 rcutree.kthread_prio=-17 tsc=reliable skew_tick=1
isolcpus=managed_irq,domain,2-31,34-63 nohz_full=2-31,34-63 rcu_nocbs=2-31,34-63 nosoftlockup efi=runtime root=/dev/nvme0n1p4

below is the output of the command :
3 ? 00:00:00 rcu_gp

  4 ?        00:00:00 rcu_par_gp

 10 ?        00:00:00 rcu_tasks_kthre

 11 ?        00:00:00 rcu_tasks_rude_

 12 ?        00:00:00 rcu_tasks_trace

 14 ?        00:02:03 rcu_preempt

 15 ?        00:00:00 rcub/1

 16 ?        00:02:38 rcuc/0

 23 ?        00:02:26 rcuc/1

 30 ?        00:00:39 rcuc/2

 34 ?        00:03:08 rcuog/2

 35 ?        00:00:00 rcuop/2

 39 ?        00:00:00 rcuc/3

 43 ?        00:00:00 rcuop/3

 47 ?        00:00:58 rcuc/4

 51 ?        00:00:00 rcuop/4

 55 ?        00:00:47 rcuc/5

 59 ?        00:00:00 rcuop/5

 63 ?        00:00:52 rcuc/6

 67 ?        00:00:00 rcuop/6

 71 ?        00:00:52 rcuc/7

 75 ?        00:00:00 rcuop/7

 79 ?        00:00:53 rcuc/8

 83 ?        00:03:29 rcuog/8

 84 ?        00:00:00 rcuop/8

 88 ?        00:00:51 rcuc/9

 92 ?        00:00:00 rcuop/9

 96 ?        00:00:50 rcuc/10

100 ?        00:00:00 rcuop/10

104 ?        00:00:50 rcuc/11

108 ?        00:00:00 rcuop/11

112 ?        00:00:00 rcuc/12

116 ?        00:00:00 rcuop/12

120 ?        00:00:45 rcuc/13

124 ?        00:00:00 rcuop/13

128 ?        00:00:00 rcuc/14

132 ?        00:00:00 rcuop/14

136 ?        00:00:10 rcuc/15

140 ?        00:00:02 rcuop/15

144 ?        00:00:00 rcuc/16

148 ?        00:03:23 rcuog/16

149 ?        00:00:00 rcuop/16

153 ?        00:00:00 rcuc/17

157 ?        00:00:00 rcub/2

158 ?        00:00:00 rcuop/17

162 ?        00:00:00 rcuc/18

166 ?        00:00:00 rcuop/18

170 ?        00:00:00 rcuc/19

174 ?        00:00:00 rcuop/19

178 ?        00:00:00 rcuc/20

182 ?        00:00:00 rcuop/20

186 ?        00:00:00 rcuc/21

190 ?        00:00:00 rcuop/21

194 ?        00:00:00 rcuc/22

198 ?        00:00:00 rcuop/22

202 ?        00:00:00 rcuc/23

206 ?        00:00:00 rcuop/23

210 ?        00:00:00 rcuc/24

214 ?        00:03:15 rcuog/24

215 ?        00:00:00 rcuop/24

219 ?        00:00:00 rcuc/25

223 ?        00:00:00 rcuop/25

227 ?        00:00:00 rcuc/26

231 ?        00:00:00 rcuop/26

235 ?        00:00:00 rcuc/27

239 ?        00:00:00 rcuop/27

243 ?        00:00:00 rcuc/28

247 ?        00:00:00 rcuop/28

251 ?        00:00:00 rcuc/29

255 ?        00:00:00 rcuop/29

259 ?        00:00:00 rcuc/30

263 ?        00:00:00 rcuop/30

267 ?        00:00:44 rcuc/31

271 ?        00:00:00 rcuop/31

275 ?        00:02:34 rcuc/32

282 ?        00:02:29 rcuc/33

286 ?        00:00:00 rcub/3

290 ?        00:00:38 rcuc/34

294 ?        00:03:07 rcuog/34

295 ?        00:00:00 rcuop/34

299 ?        00:00:00 rcuc/35

303 ?        00:00:00 rcuop/35

307 ?        00:00:00 rcuc/36

311 ?        00:00:00 rcuop/36

315 ?        00:00:47 rcuc/37

319 ?        00:00:00 rcuop/37

323 ?        00:00:52 rcuc/38

327 ?        00:00:00 rcuop/38

331 ?        00:00:49 rcuc/39

335 ?        00:00:00 rcuop/39

339 ?        00:00:47 rcuc/40

343 ?        00:03:26 rcuog/40

344 ?        00:00:00 rcuop/40

348 ?        00:00:50 rcuc/41

352 ?        00:00:00 rcuop/41

356 ?        00:00:52 rcuc/42

360 ?        00:00:00 rcuop/42

364 ?        00:00:51 rcuc/43

368 ?        00:00:00 rcuop/43

372 ?        00:00:00 rcuc/44

376 ?        00:00:00 rcuop/44

380 ?        00:00:45 rcuc/45

384 ?        00:00:00 rcuop/45

388 ?        00:00:00 rcuc/46

392 ?        00:00:00 rcuop/46

396 ?        00:00:00 rcuc/47

400 ?        00:00:00 rcuop/47

404 ?        00:00:00 rcuc/48

408 ?        00:03:27 rcuog/48

409 ?        00:00:00 rcuop/48

413 ?        00:00:00 rcuc/49

417 ?        00:00:00 rcub/4

418 ?        00:00:00 rcuop/49

422 ?        00:00:00 rcuc/50

426 ?        00:00:00 rcuop/50

430 ?        00:00:00 rcuc/51

434 ?        00:00:00 rcuop/51

438 ?        00:00:00 rcuc/52

442 ?        00:00:00 rcuop/52

446 ?        00:00:00 rcuc/53

450 ?        00:00:00 rcuop/53

454 ?        00:00:24 rcuc/54

458 ?        00:00:00 rcuop/54

462 ?        00:00:00 rcuc/55

466 ?        00:00:00 rcuop/55

470 ?        00:00:00 rcuc/56

474 ?        00:03:16 rcuog/56

475 ?        00:00:00 rcuop/56

479 ?        00:00:00 rcuc/57

483 ?        00:00:00 rcuop/57

487 ?        00:00:00 rcuc/58

491 ?        00:00:00 rcuop/58

495 ?        00:00:00 rcuc/59

499 ?        00:00:00 rcuop/59

503 ?        00:00:00 rcuc/60

507 ?        00:00:00 rcuop/60

511 ?        00:00:00 rcuc/61

515 ?        00:00:00 rcuop/61

519 ?        00:00:00 rcuc/62

523 ?        00:00:00 rcuop/62

527 ?        00:00:47 rcuc/63

531 ?        00:00:00 rcuop/63

How can we verify that rcuc threads are moved to os cores or not ??

also want to understand the output related to the given grub settings that the sttings are correctly applied??

Understand the concept of RCU Configuration for Real-Time Systems using the rcu_nocbs and rcu_nocb_poll kernel parameters.