From: Tejun Heo <tj@kernel.org>
Date: Wed, 4 Sep 2019 12:45:54 -0700
Subject: [PATCH] iocost_monitor: Always use strings for json values
Git-commit: e742bd5cb55ec0be48c5e7b356393a708e7f73c9
Patch-Mainline: v5.4-rc1
References: bsc#1156419,jsc#SLE-8281

Json has limited accuracy for numbers and can silently truncate 64bit
values, which can be extremely confusing.  Let's consistently use
string encapsulated values for json output.

While at it, convert an unnecesary f-string to str().

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.de>
---
 tools/cgroup/iocost_monitor.py | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/tools/cgroup/iocost_monitor.py b/tools/cgroup/iocost_monitor.py
index 2c9445e966d8..8f6b4ac377bd 100644
--- a/tools/cgroup/iocost_monitor.py
+++ b/tools/cgroup/iocost_monitor.py
@@ -111,14 +111,14 @@ class IocStat:
 
     def dict(self, now):
         return { 'device'               : devname,
-                 'timestamp'            : now,
-                 'enabled'              : self.enabled,
-                 'running'              : self.running,
-                 'period_ms'            : self.period_ms,
-                 'period_at'            : self.period_at,
-                 'period_vtime_at'      : self.vperiod_at,
-                 'busy_level'           : self.busy_level,
-                 'vrate_pct'            : self.vrate_pct, }
+                 'timestamp'            : str(now),
+                 'enabled'              : str(int(self.enabled)),
+                 'running'              : str(int(self.running)),
+                 'period_ms'            : str(self.period_ms),
+                 'period_at'            : str(self.period_at),
+                 'period_vtime_at'      : str(self.vperiod_at),
+                 'busy_level'           : str(self.busy_level),
+                 'vrate_pct'            : str(self.vrate_pct), }
 
     def table_preamble_str(self):
         state = ('RUN' if self.running else 'IDLE') if self.enabled else 'OFF'
@@ -171,19 +171,19 @@ class IocgStat:
 
     def dict(self, now, path):
         out = { 'cgroup'                : path,
-                'timestamp'             : now,
-                'is_active'             : self.is_active,
-                'weight'                : self.weight,
-                'weight_active'         : self.active,
-                'weight_inuse'          : self.inuse,
-                'hweight_active_pct'    : self.hwa_pct,
-                'hweight_inuse_pct'     : self.hwi_pct,
-                'inflight_pct'          : self.inflight_pct,
-                'use_delay'             : self.use_delay,
-                'delay_ms'              : self.delay_ms,
-                'usage_pct'             : self.usage }
+                'timestamp'             : str(now),
+                'is_active'             : str(int(self.is_active)),
+                'weight'                : str(self.weight),
+                'weight_active'         : str(self.active),
+                'weight_inuse'          : str(self.inuse),
+                'hweight_active_pct'    : str(self.hwa_pct),
+                'hweight_inuse_pct'     : str(self.hwi_pct),
+                'inflight_pct'          : str(self.inflight_pct),
+                'use_delay'             : str(self.use_delay),
+                'delay_ms'              : str(self.delay_ms),
+                'usage_pct'             : str(self.usage) }
         for i in range(len(self.usages)):
-            out[f'usage_pct_{i}'] = f'{self.usages[i]}'
+            out[f'usage_pct_{i}'] = str(self.usages[i])
         return out
 
     def table_row_str(self, path):
-- 
2.16.4