From 693e6c86b191f020e12f89a88dbf72c3e779e723 Mon Sep 17 00:00:00 2001
From: Patrick Daly <pdaly@codeaurora.org>
Date: Thu, 16 Apr 2015 15:03:35 -0700
Subject: [PATCH] lrdpv2: slabinfo: Prepare for future changes
Separate code which iterates through all slab objects from code which
is run for each object.
Change-Id: Iac799627e4d4c5f80c624a330f66218f1bfd8bc1
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
---
linux-ramdump-parser-v2/parsers/slabinfo.py | 52 +++++++++++++--------
1 file changed, 32 insertions(+), 20 deletions(-)
diff --git a/linux-ramdump-parser-v2/parsers/slabinfo.py b/linux-ramdump-parser-v2/parsers/slabinfo.py
index 223564e..27f87a6 100644
--- a/linux-ramdump-parser-v2/parsers/slabinfo.py
+++ b/linux-ramdump-parser-v2/parsers/slabinfo.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
+# Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 and
@@ -102,7 +102,7 @@ class Slabinfo(RamParser):
n_objects = (count >> 16) & 0xFFFF
return n_objects
- def print_slab(self, ramdump, slab_start, slab, page, out_file):
+ def print_slab(self, ramdump, slab_start, slab, page, out_file, map_fn):
p = slab_start
if page is None:
return
@@ -126,18 +126,10 @@ class Slabinfo(RamParser):
bitidx = self.slab_index(self.ramdump, p, addr, slab)
if bitidx >= len(bitarray) or bitidx < 0:
return
- if bitarray[bitidx] == 1:
- out_file.write(
- ' Object {0:x}-{1:x} FREE\n'.format(p, p + slab_size))
- else:
- out_file.write(
- ' Object {0:x}-{1:x} ALLOCATED\n'.format(p, p + slab_size))
- if self.ramdump.is_config_defined('CONFIG_SLUB_DEBUG_ON'):
- self.print_track(self.ramdump, slab, p, 0, out_file)
- self.print_track(self.ramdump, slab, p, 1, out_file)
+ map_fn(p, bitarray[bitidx], slab, page, out_file)
p = p + slab_size
- def print_slab_page_info(self, ramdump, slab, slab_node, start, out_file):
+ def print_slab_page_info(self, ramdump, slab, slab_node, start, out_file, map_fn):
page = self.ramdump.read_word(start)
seen = []
if page == 0:
@@ -160,10 +152,10 @@ class Slabinfo(RamParser):
page = page - slab_lru_offset
page_flags = self.ramdump.read_word(page + page_flags_offset)
page_addr = page_address(self.ramdump, page)
- self.print_slab(self.ramdump, page_addr, slab, page, out_file)
+ self.print_slab(self.ramdump, page_addr, slab, page, out_file, map_fn)
page = self.ramdump.read_word(page + slab_lru_offset)
- def print_per_cpu_slab_info(self, ramdump, slab, slab_node, start, out_file):
+ def print_per_cpu_slab_info(self, ramdump, slab, slab_node, start, out_file, map_fn):
page = self.ramdump.read_word(start)
if page == 0:
return
@@ -172,13 +164,29 @@ class Slabinfo(RamParser):
return
page_flags = self.ramdump.read_word(page + page_flags_offset)
page_addr = page_address(self.ramdump, page)
- self.print_slab(self.ramdump, page_addr, slab, page, out_file)
+ self.print_slab(self.ramdump, page_addr, slab, page, out_file, map_fn)
+
+ def print_all_objects(self, p, free, slab, page, out_file):
+ slab_size_offset = self.ramdump.field_offset(
+ 'struct kmem_cache', 'size')
+ slab_size = self.ramdump.read_int(slab + slab_size_offset)
+ if slab_size is None:
+ return
+
+ if free:
+ out_file.write(
+ ' Object {0:x}-{1:x} FREE\n'.format(p, p + slab_size))
+ else:
+ out_file.write(
+ ' Object {0:x}-{1:x} ALLOCATED\n'.format(p, p + slab_size))
+ if self.ramdump.is_config_defined('CONFIG_SLUB_DEBUG_ON'):
+ self.print_track(self.ramdump, slab, p, 0, out_file)
+ self.print_track(self.ramdump, slab, p, 1, out_file)
# based on validate_slab_cache. Currently assuming there is only one numa node
# in the system because the code to do that correctly is a big pain. This will
# need to be changed if we ever do NUMA properly.
- def parse(self):
- slab_out = self.ramdump.open_file('slabs.txt')
+ def validate_slab_cache(self, slab_out, map_fn):
original_slab = self.ramdump.addr_lookup('slab_caches')
per_cpu_offset = self.ramdump.addr_lookup('__per_cpu_offset')
cpu_present_bits_addr = self.ramdump.addr_lookup('cpu_present_bits')
@@ -209,17 +217,21 @@ class Slabinfo(RamParser):
slab_out.write(
'{0:x} slab {1} {2:x}\n'.format(slab, slab_name, slab_node_addr))
self.print_slab_page_info(
- self.ramdump, slab, slab_node, slab_node_addr + slab_partial_offset, slab_out)
+ self.ramdump, slab, slab_node, slab_node_addr + slab_partial_offset, slab_out, map_fn)
if self.ramdump.is_config_defined('CONFIG_SLUB_DEBUG'):
slab_full_offset = self.ramdump.field_offset(
'struct kmem_cache_node', 'full')
self.print_slab_page_info(
- self.ramdump, slab, slab_node, slab_node_addr + slab_full_offset, slab_out)
+ self.ramdump, slab, slab_node, slab_node_addr + slab_full_offset, slab_out, map_fn)
for i in range(0, cpus):
cpu_slabn_addr = self.ramdump.read_word(cpu_slab_addr, cpu=i)
self.print_per_cpu_slab_info(
- self.ramdump, slab, slab_node, cpu_slabn_addr + cpu_cache_page_offset, slab_out)
+ self.ramdump, slab, slab_node, cpu_slabn_addr + cpu_cache_page_offset, slab_out, map_fn)
slab = self.ramdump.read_word(slab + slab_list_offset)
+
+ def parse(self):
+ slab_out = self.ramdump.open_file('slabs.txt')
+ self.validate_slab_cache(slab_out, self.print_all_objects)
print_out_str('---wrote slab information to slabs.txt')
--
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