lisa._assets.kmodules.lisa: Don't rely on rq->cpu_capacity_orig anymore

The kernel commit 7bc263840bc3 ("sched/topology: Consolidate and clean
up access to a CPU's max compute") removed rq->cpu_capacity_orig so we
can't use it anymore to retrieve the original CPU capacity nor for
setting the FREQ_INVARIANCE kernel feature in LISA.

Replace rq->cpu_capacity_orig with arch_scale_cpu_capacity(cpu) in Lisa
trace module's rq_cpu_orig_capacity() and remove the HAS_MEMBER(struct,
rq, cpu_capacity_orig) check from the FREQ_INVARIANCE test.

Since arch_scale_cpu_capacity(cpu) exists in the kernel for a long time
we don't have to take care of activating this only for newer Linux
kernel versions.

Signed-off-by: Dietmar Eggemann <[email protected]>

lisa/_assets/kmodules/lisa/introspection.json

@@ -29,6 +29,6 @@
     "SCHED_AVG_RBL": "HAS_MEMBER(struct, sched_avg, runnable_load_avg) || HAS_MEMBER(struct, sched_avg, runnable_avg)",
 
     "FILE_IO": "HAS_SYMBOL(kernel_read) && HAS_SYMBOL(kernel_write) && HAS_SYMBOL(filp_open)",
-    "FREQ_INVARIANCE": "HAS_SYMBOL(arch_freq_scale) && HAS_MEMBER(struct, rq, cpu_capacity_orig)"
+    "FREQ_INVARIANCE": "HAS_SYMBOL(arch_freq_scale)"
   }
 }

lisa/_assets/kmodules/lisa/sched_helpers.h

@@ -218,7 +218,7 @@ static inline int rq_cpu_orig_capacity(const struct rq *rq)
 {
 	return
 #    if HAS_KERNEL_FEATURE(FREQ_INVARIANCE)
-		rq->cpu_capacity_orig;
+		arch_scale_cpu_capacity(cpu_of(rq))
 #    else
 		rq_cpu_capacity(rq)
 #    endif