Roman Gushchin e33c267ab7 mm: shrinkers: provide shrinkers with names ... Currently shrinkers are anonymous objects. For debugging purposes they can be identified by count/scan function names, but it's not always useful: e.g. for superblock's shrinkers it's nice to have at least an idea of to which superblock the shrinker belongs. This commit adds names to shrinkers. register_shrinker() and prealloc_shrinker() functions are extended to take a format and arguments to master a name. In some cases it's not possible to determine a good name at the time when a shrinker is allocated. For such cases shrinker_debugfs_rename() is provided. The expected format is: <subsystem>-<shrinker_type>[:<instance>]-<id> For some shrinkers an instance can be encoded as (MAJOR:MINOR) pair. After this change the shrinker debugfs directory looks like: $ cd /sys/kernel/debug/shrinker/ $ ls dquota-cache-16 sb-devpts-28 sb-proc-47 sb-tmpfs-42 mm-shadow-18 sb-devtmpfs-5 sb-proc-48 sb-tmpfs-43 mm-zspool:zram0-34 sb-hugetlbfs-17 sb-pstore-31 sb-tmpfs-44 rcu-kfree-0 sb-hugetlbfs-33 sb-rootfs-2 sb-tmpfs-49 sb-aio-20 sb-iomem-12 sb-securityfs-6 sb-tracefs-13 sb-anon_inodefs-15 sb-mqueue-21 sb-selinuxfs-22 sb-xfs:vda1-36 sb-bdev-3 sb-nsfs-4 sb-sockfs-8 sb-zsmalloc-19 sb-bpf-32 sb-pipefs-14 sb-sysfs-26 thp-deferred_split-10 sb-btrfs:vda2-24 sb-proc-25 sb-tmpfs-1 thp-zero-9 sb-cgroup2-30 sb-proc-39 sb-tmpfs-27 xfs-buf:vda1-37 sb-configfs-23 sb-proc-41 sb-tmpfs-29 xfs-inodegc:vda1-38 sb-dax-11 sb-proc-45 sb-tmpfs-35 sb-debugfs-7 sb-proc-46 sb-tmpfs-40 [roman.gushchin@linux.dev: fix build warnings] Link: https://lkml.kernel.org/r/Yr+ZTnLb9lJk6fJO@castle Reported-by: kernel test robot <lkp@intel.com> Link: https://lkml.kernel.org/r/20220601032227.4076670-4-roman.gushchin@linux.dev Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Dave Chinner <dchinner@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-07-03 18:08:40 -07:00
..
bpf	bpf: Limit maximum modifier chain length in btf_check_type_tags	2022-06-15 19:32:12 +02:00
cgroup	Merge branch 'for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2022-05-25 11:47:25 -07:00
configs	x86/configs: Add x86 debugging Kconfig fragment plus docs	2022-04-06 19:56:29 +02:00
debug	Modules updates for v5.19-rc1	2022-05-26 17:13:43 -07:00
dma	dma-direct: use the correct size for dma_set_encrypted()	2022-06-23 15:26:59 +02:00
entry	* Fix syzkaller NULL pointer dereference	2022-06-08 09:16:31 -07:00
events	Two small perf updates:	2022-06-05 10:40:31 -07:00
futex	drm for 5.19-rc1	2022-05-25 16:18:27 -07:00
gcov	gcov: Remove compiler version check	2021-12-02 17:25:21 +09:00
irq	genirq: PM: Use runtime PM for chained interrupts	2022-06-09 15:58:13 +01:00
kcsan	linux-kselftest-kunit-5.19-rc1	2022-05-25 11:32:53 -07:00
livepatch	Livepatching changes for 5.19	2022-06-02 08:55:01 -07:00
locking	locking/lockdep: Use sched_clock() for random numbers	2022-06-13 10:29:57 +02:00
module	module: Fix prefix for module.sig_enforce module param	2022-06-02 12:44:33 -07:00
power	PM: hibernate: Use kernel_can_power_off()	2022-06-21 20:57:30 +02:00
printk	Revert "printk: add functions to prefer direct printing"	2022-06-23 18:41:40 +02:00
rcu	mm: shrinkers: provide shrinkers with names	2022-07-03 18:08:40 -07:00
sched	sched: Fix balance_push() vs __sched_setscheduler()	2022-06-13 10:15:07 +02:00
time	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
trace	block-5.19-2022-06-24	2022-06-24 11:07:54 -07:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"	2022-03-31 10:36:55 +02:00
Makefile	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
acct.c	kernel/acct: move acct sysctls to its own file	2022-04-06 13:43:44 -07:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-03 11:20:34 -08:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-01-25 13:22:51 -05:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-02-22 13:51:40 -05:00
audit_fsnotify.c	fsnotify: make allow_dups a property of the group	2022-04-25 14:37:18 +02:00
audit_tree.c	audit: use fsnotify group lock helpers	2022-04-25 14:37:28 +02:00
audit_watch.c	fsnotify: pass flags argument to fsnotify_alloc_group()	2022-04-25 14:37:12 +02:00
auditfilter.c	audit/stable-5.17 PR 20220110	2022-01-11 13:08:21 -08:00
auditsc.c	audit: free module name	2022-06-15 19:28:44 -04:00
backtracetest.c	…
bounds.c	…
capability.c	xfs: don't generate selinux audit messages for capability testing	2022-03-09 10:32:06 -08:00
cfi.c	cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle	2022-06-13 09:18:46 -07:00
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	Intel Trust Domain Extensions	2022-05-23 17:51:12 -07:00
cpu_pm.c	…
crash_core.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
crash_dump.c	…
cred.c	x86: Mark __invalid_creds() __noreturn	2022-03-15 10:32:44 +01:00
delayacct.c	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
dma.c	…
exec_domain.c	…
exit.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
extable.c	lkdtm: Really write into kernel text in WRITE_KERN	2022-02-16 23:25:12 +11:00
fail_function.c	…
fork.c	This set of changes updates init and user mode helper tasks to be	2022-06-03 16:03:05 -07:00
freezer.c	…
gen_kheaders.sh	kheaders: Have cpio unconditionally replace files	2022-05-08 03:16:59 +09:00
groups.c	…
hung_task.c	Merge branch 'rework/kthreads' into for-linus	2022-06-23 19:11:28 +02:00
iomem.c	…
irq_work.c	irq_work: use kasan_record_aux_stack_noalloc() record callstack	2022-04-15 14:49:55 -07:00
jump_label.c	…
kallsyms.c	ftrace: Add ftrace_lookup_symbols function	2022-05-10 14:42:06 -07:00
kcmp.c	…
kcov.c	kcov: update pos before writing pc in trace function	2022-05-25 13:05:42 -07:00
kexec.c	…
kexec_core.c	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
kexec_elf.c	…
kexec_file.c	RISC-V Patches for the 5.19 Merge Window, Part 1	2022-05-31 14:10:54 -07:00
kexec_internal.h	…
kheaders.c	…
kmod.c	…
kprobes.c	tracing updates for 5.19:	2022-05-29 10:31:36 -07:00
ksysfs.c	kernel/ksysfs.c: use helper macro __ATTR_RW	2022-03-23 19:00:33 -07:00
kthread.c	kthread: make it clear that kthread_create_on_node() might be terminated by any fatal signal	2022-06-16 19:11:30 -07:00
latencytop.c	latencytop: move sysctl to its own file	2022-04-21 11:40:59 -07:00
module_signature.c	…
notifier.c	notifier: Add blocking/atomic_notifier_chain_register_unique_prio()	2022-05-19 19:30:30 +02:00
nsproxy.c	…
padata.c	padata: replace cpumask_weight with cpumask_empty in padata.c	2022-01-31 11:21:46 +11:00
panic.c	Merge branch 'rework/kthreads' into for-linus	2022-06-23 19:11:28 +02:00
params.c	kobject: remove kset from struct kset_uevent_ops callbacks	2021-12-28 11:26:18 +01:00
pid.c	…
pid_namespace.c	kernel: pid_namespace: use NULL instead of using plain integer as pointer	2022-04-29 14:38:00 -07:00
platform-feature.c	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
profile.c	exit: Remove profile_handoff_task	2022-01-08 12:43:57 -06:00
ptrace.c	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
range.c	…
reboot.c	Merge branch 'rework/kthreads' into for-linus	2022-06-23 19:11:28 +02:00
regset.c	…
relay.c	relay: remove redundant assignment to pointer buf	2022-05-12 20:38:37 -07:00
resource.c	kernel/resource: fix kfree() of bootmem memory again	2022-03-23 19:00:35 -07:00
resource_kunit.c	…
rseq.c	rseq: Remove broken uapi field layout on 32-bit little endian	2022-02-02 13:11:34 +01:00
scftorture.c	scftorture: Fix distribution of short handler delays	2022-04-11 17:07:29 -07:00
scs.c	kasan, vmalloc: only tag normal vmalloc allocations	2022-03-24 19:06:48 -07:00
seccomp.c	seccomp: Add wait_killable semantic to seccomp user notifier	2022-05-03 14:11:58 -07:00
signal.c	While looking at the ptrace problems with PREEMPT_RT and the problems	2022-06-03 16:13:25 -07:00
smp.c	Scheduler changes in this cycle were:	2022-05-24 11:11:13 -07:00
smpboot.c	cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again.	2022-04-12 14:13:01 +02:00
smpboot.h	…
softirq.c	smp: Make softirq handling RT safe in flush_smp_call_function_queue()	2022-05-01 10:03:43 +02:00
stackleak.c	stackleak: add on/off stack variants	2022-05-08 01:33:09 -07:00
stacktrace.c	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
static_call.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
static_call_inline.c	static_call: Don't make __static_call_return0 static	2022-04-05 09:59:38 +02:00
stop_machine.c	Scheduler changes in this cycle were:	2022-05-24 11:11:13 -07:00
sys.c	arm64/sme: Implement vector length configuration prctl()s	2022-04-22 18:50:54 +01:00
sys_ni.c	mm/mempolicy: wire up syscall set_mempolicy_home_node	2022-01-15 16:30:30 +02:00
sysctl-test.c	…
sysctl.c	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
task_work.c	task_work: allow TWA_SIGNAL without a rescheduling IPI	2022-04-30 08:39:32 -06:00
taskstats.c	kernel: make taskstats available from all net namespaces	2022-04-29 14:38:03 -07:00
torture.c	torture: Wake up kthreads after storing task_struct pointer	2022-02-01 17:24:39 -08:00
tracepoint.c	…
tsacct.c	taskstats: version 12 with thread group and exe info	2022-04-29 14:38:03 -07:00
ucount.c	ucounts: Handle wrapping in is_ucounts_overlimit	2022-02-17 09:11:57 -06:00
uid16.c	…
uid16.h	…
umh.c	kthread: Don't allocate kthread_struct for init and umh	2022-05-06 14:49:44 -05:00
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	ucounts: Fix systemd LimitNPROC with private users regression	2022-02-25 10:40:14 -06:00
usermode_driver.c	blob_to_mnt(): kern_unmount() is needed to undo kern_mount()	2022-05-19 23:25:47 -04:00
utsname.c	…
utsname_sysctl.c	…
watch_queue.c	watch_queue: Free the page array when watch_queue is dismantled	2022-04-02 10:37:39 -07:00
watchdog.c	Merge branch 'rework/kthreads' into for-linus	2022-06-23 19:11:28 +02:00
watchdog_hld.c	Revert "printk: add functions to prefer direct printing"	2022-06-23 18:41:40 +02:00
workqueue.c	workqueue: Wrap flush_workqueue() using a macro	2022-06-07 07:07:14 -10:00
workqueue_internal.h	…