From d87ca0cd531d530b8340104434483594d1358a58 Mon Sep 17 00:00:00 2001
From: Lingutla Chandrasekhar <clingutla@codeaurora.org>
Date: Wed, 27 Mar 2019 10:44:14 +0530
Subject: [PATCH] ldrp_v2: sched-info: Fix finding number of clusters
Current script assumes last cpu would map to last cluster in cpu-map.
But it might not true always, device-tree can map cpus in different
order than its actual number. i.e. cpus0-3 could be part on cluster#1,
and cpus4-7 maps to cluster#0, in this case last cluster id is 0 and
breaks above assumption.
Fix this by dynamically extending the cluster list.
Change-Id: I907d89e33a1f57b656c6df374a23e18b2d2c42fa
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
---
linux-ramdump-parser-v2/sched_info.py | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/linux-ramdump-parser-v2/sched_info.py b/linux-ramdump-parser-v2/sched_info.py
index 2c55daf..96007bb 100644
--- a/linux-ramdump-parser-v2/sched_info.py
+++ b/linux-ramdump-parser-v2/sched_info.py
@@ -41,19 +41,18 @@ def verify_active_cpus(ramdump):
if (cluster_id_off is None):
print_out_str("\n Invalid cluster topology detected\n")
- clusters = ramdump.read_int(cpu_topology_addr + cluster_id_off + ((nr_cpus - 1) * cpu_topology_size))
- clusters += 1
-
# INFO: from 4.19 onwards, core_sibling mask contains only online cpus,
# find out cluster cpus dynamically.
- cluster_nrcpus = [0] * (clusters)
+ cluster_nrcpus = [0]
for j in range(0, nr_cpus):
c_id = ramdump.read_int(cpu_topology_addr + (j * cpu_topology_size) + cluster_id_off)
+ if len(cluster_nrcpus) <= c_id :
+ cluster_nrcpus.extend([0])
cluster_nrcpus[c_id] += 1
next_cluster_cpu = 0
- for i in range(0, clusters):
+ for i in range(0, len(cluster_nrcpus)):
cluster_cpus = ramdump.read_word(cpu_topology_addr +
(next_cluster_cpu * cpu_topology_size) + core_sib_off)
cluster_online_cpus = cpu_online_bits & cluster_cpus
--
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