kernel/linux.git/tools/vm, branch v5.15.219

tools/mm/slabinfo: fix total_objects attribute name

2026-07-24T13:51:26+00:00

[ Upstream commit 892a7864730775c3dbee2a39e9ead4fa8d4256e7 ] SLUB exports the total_objects sysfs attribute, but slabinfo tries to read objects_total. As a result, the lookup fails and the field remains zero. Use the correct attribute name and rename the corresponding structure member to match. Fixes: 205ab99dd103 ("slub: Update statistics handling for variable order slabs") Signed-off-by: Yichong Chen Cc: Reviewed-by: SeongJae Park Link: https://patch.msgid.link/96556748872BB47E+20260612071359.649946-1-chenyichong@uniontech.com Signed-off-by: Vlastimil Babka (SUSE) Signed-off-by: Sasha Levin

tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"

2022-12-08T10:28:42+00:00

commit a435874bf626f55d7147026b059008c8de89fbb8 upstream. The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this up by moving the related file to use "grep -E" instead. sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/vm` Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATH Link: https://lkml.kernel.org/r/1668825419-30584-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Tiezhu Yang Reviewed-by: Sergey Senozhatsky Cc: Vlastimil Babka Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

tools/vm/slabinfo: use alphabetic order when two values are equal

2022-08-25T09:40:13+00:00

commit 4f5ceb8851f0081af54313abbf56de1615911faf upstream. When the number of partial slabs in each cache is the same (e.g., the value are 0), the results of the `slabinfo -X -N5` and `slabinfo -P -N5` are different. / # slabinfo -X -N5 ... Slabs sorted by number of partial slabs --------------------------------------- Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg inode_cache 15180 392 6217728 758/0/1 20 1 0 95 a kernfs_node_cache 22494 88 2002944 488/0/1 46 0 0 98 shmem_inode_cache 663 464 319488 38/0/1 17 1 0 96 biovec-max 50 3072 163840 4/0/1 10 3 0 93 A dentry 19050 136 2600960 633/0/2 30 0 0 99 a / # slabinfo -P -N5 Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg bdev_cache 32 984 32.7K 1/0/1 16 2 0 96 Aa ext4_inode_cache 42 752 32.7K 1/0/1 21 2 0 96 a dentry 19050 136 2.6M 633/0/2 30 0 0 99 a TCPv6 17 1840 32.7K 0/0/1 17 3 0 95 A RAWv6 18 856 16.3K 0/0/1 18 2 0 94 A This problem is caused by the sort_slabs(). So let's use alphabetic order when two values are equal in the sort_slabs(). By the way, the content of the `slabinfo -h` is not aligned because the `-P|--partial Sort by number of partial slabs` uses tabs instead of spaces. So let's use spaces instead of tabs to fix it. Link: https://lkml.kernel.org/r/20220528063117.935158-1-songyuanzheng@huawei.com Fixes: 1106b205a3fe ("tools/vm/slabinfo: add partial slab listing to -X") Signed-off-by: Yuanzheng Song Cc: "Tobin C. Harding" Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

tools/vm/slabinfo: Handle files in debugfs

2022-08-11T11:07:50+00:00

commit 0c7e0d699ef1430d7f4cf12b4b1d097af58b5515 upstream. Commit 64dd68497be76 relocated and renamed the alloc_calls and free_calls files from /sys/kernel/slab/NAME/*_calls over to /sys/kernel/debug/slab/NAME/*_calls but didn't update the slabinfo tool with the new location. This change will now have slabinfo look at the new location (and filenames) with a fallback to the prior files. Fixes: 64dd68497be76 ("mm: slub: move sysfs slab alloc/free interfaces to debugfs") Cc: stable@vger.kernel.org Signed-off-by: Stéphane Graber Tested-by: Stéphane Graber Signed-off-by: Vlastimil Babka Signed-off-by: Greg Kroah-Hartman

tools/vm/page-types: remove dependency on opt_file for idle page tracking

2021-09-24T23:13:35+00:00

Idle page tracking can also be used for process address space, not only file mappings. Without this change, using with '-i' option for process address space encounters below errors reported. $ sudo ./page-types -p $(pidof bash) -i mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor ... Link: https://lkml.kernel.org/r/20210917032826.10669-1-changbin.du@gmail.com Signed-off-by: Changbin Du Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

tools/vm/page_owner_sort.c: check malloc() return

2021-06-29T17:53:47+00:00

Link: https://lkml.kernel.org/r/20210506131402.10416-1-tangbin@cmss.chinamobile.com Signed-off-by: Zhang Shengju Signed-off-by: Tang Bin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: Add PG_arch_2 page flag

2020-09-04T11:46:06+00:00

For arm64 MTE support it is necessary to be able to mark pages that contain user space visible tags that will need to be saved/restored e.g. when swapped out. To support this add a new arch specific flag (PG_arch_2). This flag is only available on 64-bit architectures due to the limited number of spare page flags on the 32-bit ones. Signed-off-by: Steven Price [catalin.marinas@arm.com: use CONFIG_64BIT for guarding this new flag] Signed-off-by: Catalin Marinas Cc: Andrew Morton

tools/vm/page_owner_sort.c: filter out unneeded line

2020-06-04T03:09:49+00:00

To see a sorted result from page_owner, there must be a tiresome preprocessing step before running page_owner_sort. This patch simply filters out lines which start with "PFN" while reading the page owner report. Signed-off-by: Changhee Han Signed-off-by: Andrew Morton Reviewed-by: Andrew Morton Cc: Vlastimil Babka Cc: Joonsoo Kim Cc: Jonathan Corbet Link: http://lkml.kernel.org/r/20200429052940.16968-1-ch0.han@lge.com Signed-off-by: Linus Torvalds

tools/vm: fix cross-compile build

2020-04-21T18:11:56+00:00

Commit 7ed1c1901fe5 ("tools: fix cross-compile var clobbering") moved the setup of the CC variable to tools/scripts/Makefile.include to make the behavior consistent across all the tools Makefiles. As the vm tools missed the include we end up with the wrong CC in a cross-compiling evironment. Fixes: 7ed1c1901fe5 (tools: fix cross-compile var clobbering) Signed-off-by: Lucas Stach Signed-off-by: Andrew Morton Cc: Martin Kelly Cc: Link: http://lkml.kernel.org/r/20200416104748.25243-1-l.stach@pengutronix.de Signed-off-by: Linus Torvalds

.gitignore: add SPDX License Identifier

2020-03-25T10:50:48+00:00

Add SPDX License Identifier to all .gitignore files. Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman