Tejun Heo f3d73b877a workqueue: Refactor worker ID formatting and make wq_worker_comm() use full ID string ... [ Upstream commit 2a1b02bcba ] Currently, worker ID formatting is open coded in create_worker(), init_rescuer() and worker_thread() (for %WORKER_DIE case). The formatted ID is saved into task->comm and wq_worker_comm() uses it as the base name to append extra information to when generating the name to be shown to userspace. However, TASK_COMM_LEN is only 16 leading to badly truncated names for rescuers. For example, the rescuer for the inet_frag_wq workqueue becomes: $ ps -ef | grep '[k]worker/R-inet' root 483 2 0 Apr26 ? 00:00:00 [kworker/R-inet_] Even for non-rescue workers, it's easy to run over 15 characters on moderately large machines. Fit it by consolidating worker ID formatting into a new helper format_worker_id() and calling it from wq_worker_comm() to obtain the untruncated worker ID string. $ ps -ef | grep '[k]worker/R-inet' root 60 2 0 12:10 ? 00:00:00 [kworker/R-inet_frag_wq] Signed-off-by: Tejun Heo <tj@kernel.org> Reported-and-tested-by: Jan Engelhardt <jengelh@inai.de> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-07-25 09:53:31 +02:00
..
bpf	bpf: Defer work in bpf_timer_cancel_and_free	2024-07-18 13:22:40 +02:00
cgroup	cgroup/cpuset: Make cpuset hotplug processing synchronous	2024-06-27 13:52:15 +02:00
configs	configs/hardening: Disable CONFIG_UBSAN_SIGNED_WRAP	2024-04-15 11:08:24 -07:00
debug	kdb: Use format-specifiers rather than memset() for padding in kdb_read()	2024-06-16 13:51:09 +02:00
dma	dma-mapping: benchmark: avoid needless copy_to_user if benchmark fails	2024-07-11 12:51:21 +02:00
entry	entry: Respect changes to system call number by trace_sys_enter()	2024-03-12 13:23:32 +01:00
events	perf/core: Fix missing wakeup when waiting for context reference	2024-06-21 14:40:30 +02:00
futex	futex: Prevent the reuse of stale pi_state	2024-01-19 12:58:17 +01:00
gcov	gcov: add support for GCC 14	2024-06-27 13:52:29 +02:00
irq	genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()	2024-06-16 13:51:12 +02:00
kcsan	mm: delete checks for xor_unlock_is_negative_byte()	2023-10-18 14:34:17 -07:00
livepatch	livepatch: Fix missing newline character in klp_resolve_symbols()	2023-09-20 11:24:18 +02:00
locking	locking/mutex: Introduce devm_mutex_init()	2024-07-11 12:50:55 +02:00
module	This push fixes a regression that broke iwd as well as a divide by	2024-03-25 10:48:23 -07:00
power	swap: yield device immediately	2024-07-11 12:51:22 +02:00
printk	printk changes for 6.9-rc2	2024-03-26 09:25:57 -07:00
rcu	rcutorture: Fix invalid context warning when enable srcu barrier testing	2024-06-27 13:52:12 +02:00
sched	sched/deadline: Fix task_struct reference leak	2024-07-18 13:22:55 +02:00
time	clocksource: Make watchdog and suspend-timing multiplication overflow safe	2024-06-27 13:52:13 +02:00
trace	tracing: Add MODULE_DESCRIPTION() to preemptirq_delay_test	2024-06-27 13:52:31 +02:00
.gitignore
acct.c	fs: rename __mnt_{want,drop}_write*() helpers	2023-09-11 15:05:50 +02:00
async.c	async: Use a dedicated unbound workqueue with raised min_active	2024-02-09 11:13:59 -10:00
audit_fsnotify.c
audit_tree.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2023-11-14 17:34:27 -05:00
audit.c	audit: use KMEM_CACHE() instead of kmem_cache_create()	2024-01-25 10:12:22 -05:00
audit.h	audit: correct audit_filter_inodes() definition	2023-07-21 12:17:25 -04:00
auditfilter.c	ima: Avoid blocking in RCU read-side critical section	2024-06-27 13:52:30 +02:00
auditsc.c	audit,io_uring: io_uring openat triggers audit reference count underflow	2023-10-13 18:34:46 +02:00
backtracetest.c	backtracetest: Convert from tasklet to BH workqueue	2024-02-05 13:22:34 -10:00
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-04-29 08:29:29 -07:00
capability.c	lsm: constify the 'target' parameter in security_capget()	2023-08-08 16:48:47 -04:00
cfi.c	cfi: Switch to -fsanitize=kcfi	2022-09-26 10:13:13 -07:00
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-03-14 19:32:38 -07:00
configs.c
context_tracking.c	context_tracking: Fix kerneldoc headers for __ct_user_{enter,exit}()	2024-02-14 07:53:50 -08:00
cpu_pm.c	cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()	2023-01-13 11:48:15 +01:00
cpu.c	cpu/hotplug: Fix dynstate assignment in __cpuhp_setup_state_cpuslocked()	2024-07-05 09:38:12 +02:00
crash_core.c	crash: split crash dumping code out from kexec_core.c	2024-02-23 17:48:22 -08:00
crash_reserve.c	crash: use macro to add crashk_res into iomem early for specific arch	2024-03-26 11:14:12 -07:00
cred.c	cred: Use KMEM_CACHE() instead of kmem_cache_create()	2024-02-23 17:33:31 -05:00
delayacct.c	delayacct: track delays from IRQ/SOFTIRQ	2023-04-18 16:39:34 -07:00
dma.c
elfcorehdr.c	crash: remove dependency of FA_DUMP on CRASH_DUMP	2024-02-23 17:48:22 -08:00
exec_domain.c
exit.c	mm: optimize the redundant loop of mm_update_owner_next()	2024-07-11 12:51:15 +02:00
exit.h	exit: add internal include file with helpers	2023-09-21 12:03:50 -06:00
extable.c
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-02-08 13:36:22 +01:00
fork.c	fork: defer linking file vma until vma is fully initialized	2024-04-16 15:39:51 -07:00
freezer.c	Linux 6.7-rc6	2023-12-23 15:52:13 +01:00
gen_kheaders.sh	kheaders: explicitly define file modes for archived headers	2024-06-21 14:40:32 +02:00
groups.c	groups: Convert group_info.usage to refcount_t	2023-09-29 11:28:39 -07:00
hung_task.c	kernel/hung_task.c: export sysctl_hung_task_timeout_secs	2024-03-13 21:22:04 -04:00
iomem.c	kernel/iomem.c: remove __weak ioremap_cache helper	2023-08-21 13:37:28 -07:00
irq_work.c	trace: Add trace_ipi_send_cpu()	2023-03-24 11:01:29 +01:00
jump_label.c	jump_label: Prevent key->enabled int overflow	2022-12-01 15:53:05 -08:00
kallsyms_internal.h	kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]	2022-11-12 18:47:36 -08:00
kallsyms_selftest.c	mm/vmalloc: remove vmap_area_list	2024-02-23 17:48:19 -08:00
kallsyms_selftest.h	kallsyms: Add self-test facility	2022-11-15 00:42:02 -08:00
kallsyms.c	kallsyms: Change func signature for cleanup_symbol_name()	2023-08-25 15:00:36 -07:00
kcmp.c	file: convert to SLAB_TYPESAFE_BY_RCU	2023-10-19 11:02:48 +02:00
Kconfig.freezer
Kconfig.hz
Kconfig.kexec	crash: clean up kdump related config items	2024-02-23 17:48:22 -08:00
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: don't lose track of remote references during softirqs	2024-06-27 13:52:29 +02:00
kexec_core.c	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
kexec_elf.c
kexec_file.c	arm64, crash: wrap crash dumping code into crash related ifdefs	2024-02-23 17:48:23 -08:00
kexec_internal.h	crash: remove dependency of FA_DUMP on CRASH_DUMP	2024-02-23 17:48:22 -08:00
kexec.c	crash: split crash dumping code out from kexec_core.c	2024-02-23 17:48:22 -08:00
kheaders.c	kheaders: Use array declaration instead of char	2023-03-24 20:10:59 -07:00
kprobes.c	kprobe/ftrace: fix build error due to bad function definition	2024-06-27 13:52:32 +02:00
ksyms_common.c	kallsyms: make kallsyms_show_value() as generic function	2023-06-08 12:27:20 -07:00
ksysfs.c	Driver core changes for 6.9-rc1	2024-03-21 13:34:15 -07:00
kthread.c	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
latencytop.c	latencytop: use the last element of latency_record of system	2022-09-11 21:55:12 -07:00
Makefile	crash: split crash dumping code out from kexec_core.c	2024-02-23 17:48:22 -08:00
module_signature.c
notifier.c	notifiers: add tracepoints to the notifiers infrastructure	2023-04-08 13:45:38 -07:00
nsproxy.c	pidfd: add pidfs	2024-03-01 12:23:37 +01:00
numa.c	kernel/numa.c: Move logging out of numa.h	2023-12-20 19:26:30 -05:00
padata.c	padata: Disable BH when taking works lock on MT path	2024-06-27 13:52:11 +02:00
panic.c	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
params.c	params: Fix multi-line comment style	2023-12-01 09:51:44 -08:00
pid_namespace.c	zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING	2024-06-21 14:40:39 +02:00
pid_sysctl.h	memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy	2023-08-21 13:37:59 -07:00
pid.c	pidfs: remove config option	2024-03-13 12:53:53 -07:00
profile.c	profiling: Remove create_prof_cpu_mask().	2024-04-27 11:17:48 -07:00
ptrace.c	ptrace_attach: shift send(SIGSTOP) into ptrace_set_stopped()	2024-02-22 15:38:52 -08:00
range.c
reboot.c	Thermal control updates for 6.8-rc1	2024-01-09 16:20:17 -08:00
regset.c
relay.c	kernel: relay: remove relay_file_splice_read dead code, doesn't work	2023-12-29 12:22:27 -08:00
resource_kunit.c
resource.c	Quite a lot of kexec work this time around. Many singleton patches in	2024-01-09 11:46:20 -08:00
rseq.c	rseq: Extend struct rseq with per-memory-map concurrency ID	2022-12-27 12:52:12 +01:00
scftorture.c	scftorture: Pause testing after memory-allocation failure	2023-07-14 15:02:57 -07:00
scs.c	scs: add support for dynamic shadow call stacks	2022-11-09 18:06:35 +00:00
seccomp.c	file: remove __receive_fd()	2023-12-12 14:24:14 +01:00
signal.c	- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min	2024-03-14 18:03:09 -07:00
smp.c	CSD lock commits for v6.7	2023-10-30 17:56:53 -10:00
smpboot.c	kthread: add kthread_stop_put	2023-10-04 10:41:57 -07:00
smpboot.h
softirq.c	softirq: Fix suspicious RCU usage in __do_softirq()	2024-04-29 05:03:51 +02:00
stackleak.c	stackleak: allow to specify arch specific stackleak poison function	2023-04-20 11:36:35 +02:00
stacktrace.c	stacktrace: fix kernel-doc typo	2023-12-29 12:22:29 -08:00
static_call_inline.c	static_call: Add call depth tracking support	2022-10-17 16:41:16 +02:00
static_call.c
stop_machine.c
sys_ni.c	syscalls: fix compat_sys_io_pgetevents_time64 usage	2024-07-05 09:38:16 +02:00
sys.c	prctl: generalize PR_SET_MDWE support check to be per-arch	2024-03-26 11:07:22 -07:00
sysctl-test.c	kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred}	2022-09-08 16:56:45 -07:00
sysctl.c	tracing: Support to dump instance traces by ftrace_dump_on_oops	2024-03-18 10:33:06 -04:00
task_work.c	task_work: add kerneldoc annotation for 'data' argument	2023-09-19 13:21:32 -07:00
taskstats.c	taskstats: fill_stats_for_tgid: use for_each_thread()	2023-10-04 10:41:57 -07:00
torture.c	torture: Print out torture module parameters	2023-09-24 17:24:01 +02:00
tracepoint.c	tracepoint: Allow livepatch module add trace event	2023-02-18 14:34:36 -05:00
tsacct.c
ucount.c	sysctl: Add size to register_sysctl	2023-08-15 15:26:17 -07:00
uid16.c
uid16.h
umh.c	sysctl: fix unused proc_cap_handler() function warning	2023-06-29 15:19:43 -07:00
up.c	smp: Change function signatures to use call_single_data_t	2023-09-13 14:59:24 +02:00
user_namespace.c	user_namespace: remove unnecessary NULL values from kbuf	2024-02-22 15:38:52 -08:00
user-return-notifier.c
user.c	binfmt_misc: enable sandboxed mounts	2023-10-11 08:46:01 -07:00
usermode_driver.c
utsname_sysctl.c	utsname: simplify one-level sysctl registration for uts_kern_table	2023-04-13 11:49:35 -07:00
utsname.c
vhost_task.c	vhost_task: Handle SIGKILL by flushing work and exiting	2024-07-11 12:51:07 +02:00
vmcore_info.c	mm: turn folio_test_hugetlb into a PageType	2024-04-24 19:34:26 -07:00
watch_queue.c	watch_queue: fix kcalloc() arguments order	2023-12-21 13:17:54 +01:00
watchdog_buddy.c	watchdog/hardlockup: move SMP barriers from common code to buddy code	2023-06-19 16:25:28 -07:00
watchdog_perf.c	watchdog/perf: add a weak function for an arch to detect if perf can use NMIs	2023-06-09 17:44:21 -07:00
watchdog.c	watchdog/core: remove sysctl handlers from public header	2024-03-12 13:09:23 -07:00
workqueue_internal.h	workqueue: Drop the special locking rule for worker->flags and worker_pool->flags	2023-08-07 15:57:22 -10:00
workqueue.c	workqueue: Refactor worker ID formatting and make wq_worker_comm() use full ID string	2024-07-25 09:53:31 +02:00