From 001912c1157fcea7401e1250892050252132a167 Mon Sep 17 00:00:00 2001
From: Sudhir Kumar Reddy Varakantham <skvara@codeaurora.org>
Date: Fri, 15 Dec 2017 15:09:26 +0530
Subject: [PATCH] lrdp_v2 : Fix for broken watchdog_v2.py for kernel < 4.4
For kernel version less than 4.4, as the member variable timer_expired
is not available we need to get watchdog timer expire status
Change-Id: I28db293d7d0300d55f5ae0abac188205b80d0359
Signed-off-by: Sudhir Kumar Reddy Varakantham <skvara@codeaurora.org>
---
linux-ramdump-parser-v2/watchdog_v2.py | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/linux-ramdump-parser-v2/watchdog_v2.py b/linux-ramdump-parser-v2/watchdog_v2.py
index 0f9d5e8..63b3242 100644
--- a/linux-ramdump-parser-v2/watchdog_v2.py
+++ b/linux-ramdump-parser-v2/watchdog_v2.py
@@ -848,9 +848,22 @@ def get_wdog_timing(ramdump):
wdog_data_addr + pet_timer_off + timer_expires_off)
wdog_last_pet = ramdump.read_structure_field(
wdog_data_addr, 'struct msm_watchdog_data', 'last_pet')
- timer_expired_off = ramdump.field_offset(
- 'struct msm_watchdog_data', 'timer_expired')
- pet_timer_expired = ramdump.read_word(wdog_data_addr + timer_expired_off)
+ #For kernel version less than 4.4, as the member variable timer_expired
+ # is not available we need to get watchdog timer expire status
+ if (ramdump.kernel_version < (4, 4)):
+ pet_timer_entry_offset = ramdump.field_offset('struct timer_list', 'entry')
+ pet_timer_prev_offset = ramdump.field_offset('struct list_head', 'prev')
+ pet_timer_entry_prev = ramdump.read_word(
+ wdog_data_addr + pet_timer_off + pet_timer_entry_offset + pet_timer_prev_offset)
+
+ if(pet_timer_entry_prev == '0x200'):
+ pet_timer_expired = 1
+ else:
+ pet_timer_expired = 0
+ else:
+ timer_expired_off = ramdump.field_offset(
+ 'struct msm_watchdog_data', 'timer_expired')
+ pet_timer_expired = ramdump.read_word(wdog_data_addr + timer_expired_off)
pet_time_off = ramdump.field_offset('struct msm_watchdog_data', 'pet_time')
bark_time_off = ramdump.field_offset(
'struct msm_watchdog_data', 'bark_time')
--
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