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torvalds-linux/kernel
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zhoumin 42ea22e754 ftrace: Add cond_resched() to ftrace_graph_set_hash() 
When the kernel contains a large number of functions that can be traced,
the loop in ftrace_graph_set_hash() may take a lot of time to execute.
This may trigger the softlockup watchdog.

Add cond_resched() within the loop to allow the kernel to remain
responsive even when processing a large number of functions.

This matches the cond_resched() that is used in other locations of the
code that iterates over all functions that can be traced.

Cc: stable@vger.kernel.org
Fixes: b9b0c831bed26 ("ftrace: Convert graph filter to use hash tables")
Link: https://lore.kernel.org/tencent_3E06CE338692017B5809534B9C5C03DA7705@qq.com
Signed-off-by: zhoumin <teczm@foxmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-04-02 09:51:25 -04:00
..
bpf
bpf_try_alloc_pages
2025-03-30 13:45:28 -07:00
cgroup
Scheduler updates for v6.15:
2025-03-24 21:28:12 -07:00
configs
ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
2025-03-07 19:58:05 -08:00
debug
kdb: Remove unused flags stack
2025-01-25 08:22:26 +00:00
dma
dma-mapping: fix missing clear bdr in check_ram_in_range_map()
2025-03-12 13:41:44 +01:00
entry
Objtool changes for v6.15:
2025-03-24 21:18:05 -07:00
events
lsm/stable-6.15 PR 20250323
2025-03-25 15:44:19 -07:00
futex
futex: Use a hashmask instead of hashsize
2025-02-26 16:07:59 +01:00
gcov
gcov: clang: use correct function param names
2025-01-24 22:47:27 -08:00
irq
Revert "Merge tag 'irq-msi-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip"
2025-03-28 11:22:54 -07:00
kcsan
…
livepatch
Modules changes for 6.15-rc1
2025-03-30 15:44:36 -07:00
locking
Miscellaneous locking fixes and updates:
2025-03-30 15:18:36 -07:00
module
ring-buffer updates for v6.15
2025-03-31 13:37:22 -07:00
power
This update includes the following changes:
2025-03-29 10:01:55 -07:00
printk
printk changes for 6.15
2025-03-27 19:22:24 -07:00
rcu
RCU pull request for v6.15
2025-03-24 19:41:37 -07:00
sched
Latency tracing changes for v6.15:
2025-03-27 16:03:52 -07:00
time
Networking changes for 6.15.
2025-03-26 21:48:21 -07:00
trace
ftrace: Add cond_resched() to ftrace_graph_set_hash()
2025-04-02 09:51:25 -04:00
.gitignore
…
acct.c
acct: block access to kernel internal filesystems
2025-02-12 12:24:16 +01:00
async.c
…
audit_fsnotify.c
…
audit_tree.c
…
audit_watch.c
VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry
2025-02-19 14:08:41 +01:00
audit.c
audit: Initialize lsmctx to avoid memory allocation error
2025-01-29 20:02:04 -05:00
audit.h
…
auditfilter.c
…
auditsc.c
fs: dedup handling of struct filename init and refcounts bumps
2025-03-18 15:34:27 +01:00
backtracetest.c
…
bounds.c
…
capability.c
capability: Remove unused has_capability
2025-03-07 22:03:09 -06:00
cfi.c
Modules changes for 6.15-rc1
2025-03-30 15:44:36 -07:00
compat.c
…
configs.c
…
context_tracking.c
context_tracking: Make RCU watch ct_kernel_exit_state() warning
2025-03-04 18:44:29 -08:00
cpu_pm.c
…
cpu.c
hyperv-next for 6.15
2025-03-25 14:47:04 -07:00
crash_core.c
crash: Use note name macros
2025-02-10 16:56:58 -08:00
crash_reserve.c
…
cred.c
…
delayacct.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
dma.c
…
elfcorehdr.c
…
exec_domain.c
…
exit.c
kernel-6.15-rc1.tasklist_lock
2025-03-24 13:39:27 -07:00
exit.h
…
extable.c
…
fail_function.c
…
fork.c
Miscellaneous x86 fixes and updates:
2025-03-30 15:25:15 -07:00
freezer.c
…
gen_kheaders.sh
Kbuild updates for v6.14
2025-01-31 12:07:07 -08:00
groups.c
…
hung_task.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
iomem.c
mm/memremap: Pass down MEMREMAP_* flags to arch_memremap_wb()
2025-02-21 15:05:38 +01:00
irq_work.c
kasan: make kasan_record_aux_stack_noalloc() the default behaviour
2025-01-13 22:40:36 -08:00
jump_label.c
jump_label: Use RCU in all users of __module_text_address().
2025-03-10 11:54:46 +01:00
kallsyms_internal.h
…
kallsyms_selftest.c
kallsyms: Use kthread_run_on_cpu()
2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
…
kallsyms.c
kallsyms: Remove KALLSYMS_ABSOLUTE_PERCPU
2025-02-18 10:16:04 +01:00
kcmp.c
kcmp: improve performance adding an unlikely hint to task comparisons
2025-02-21 10:25:33 +01:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.kexec
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kcov: mark in_softirq_really() as __always_inline
2024-12-30 17:59:08 -08:00
kexec_core.c
printk changes for 6.15
2025-03-27 19:22:24 -07:00
kexec_elf.c
…
kexec_file.c
…
kexec_internal.h
…
kexec.c
…
kheaders.c
kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()
2024-12-24 09:46:49 +01:00
kprobes.c
kprobes: Use RCU in all users of __module_text_address().
2025-03-10 11:54:46 +01:00
ksyms_common.c
…
ksysfs.c
kernel/ksysfs.c: simplify bin_attribute definition
2025-01-07 16:59:15 +01:00
kthread.c
kthread: Fix return value on kzalloc() failure in kthread_affine_preferred()
2025-02-04 01:42:27 +01:00
latencytop.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
Makefile
tracing: Disable branch profiling in noinstr code
2025-03-22 09:49:26 +01:00
module_signature.c
…
notifier.c
…
nsproxy.c
…
padata.c
padata: switch padata_find_next() to using cpumask_next_wrap()
2025-02-24 16:37:23 -05:00
panic.c
taint: Add TAINT_FWCTL
2025-03-06 15:13:13 -04:00
params.c
params: Annotate struct module_param_attrs with __counted_by()
2025-03-10 11:54:46 +01:00
pid_namespace.c
pid: Do not set pid_max in new pid namespaces
2025-03-06 10:18:36 +01:00
pid_sysctl.h
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
pid.c
kernel-6.15-rc1.tasklist_lock
2025-03-24 13:39:27 -07:00
profile.c
…
ptrace.c
…
range.c
…
reboot.c
Flush console log from kernel_power_off()
2025-03-04 18:44:29 -08:00
regset.c
…
relay.c
…
resource_kunit.c
…
resource.c
kernel/resource: simplify API __devm_release_region() implementation
2025-01-12 20:20:58 -08:00
rseq.c
rseq: Fix segfault on registration when rseq_cs is non-zero
2025-03-06 22:26:49 +01:00
scftorture.c
…
scs.c
…
seccomp.c
seccomp: avoid the lock trip seccomp_filter_release in common case
2025-02-24 11:17:10 -08:00
signal.c
Updates for the core time/timer subsystem:
2025-03-25 10:33:23 -07:00
smp.c
CSD-lock pull request for v6.14
2025-01-28 11:34:03 -08:00
smpboot.c
…
smpboot.h
…
softirq.c
lockdep: Fix wait context check on softirq for PREEMPT_RT
2025-03-25 10:46:44 +01:00
stackleak.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
stacktrace.c
…
static_call_inline.c
Modules changes for 6.15-rc1
2025-03-30 15:44:36 -07:00
static_call.c
…
stop_machine.c
stop-machine: Add comment for rcu_momentary_eqs()
2025-03-11 10:15:52 -07:00
sys_ni.c
…
sys.c
Updates for the core time/timer subsystem:
2025-03-25 10:33:23 -07:00
sysctl-test.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
sysctl.c
s390 updates for 6.15 merge window
2025-03-29 11:59:43 -07:00
task_work.c
kasan: make kasan_record_aux_stack_noalloc() the default behaviour
2025-01-13 22:40:36 -08:00
taskstats.c
…
torture.c
torture: Add get_torture_init_jiffies() for test-start time
2025-02-05 07:14:24 -08:00
tracepoint.c
tracepoint: Print the function symbol when tracepoint_debug is set
2025-03-21 15:30:10 -04:00
tsacct.c
…
ucount.c
ucounts: move kfree() out of critical zone protected by ucounts_lock
2025-01-12 20:21:00 -08:00
uid16.c
…
uid16.h
…
umh.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
up.c
…
user_namespace.c
uidgid: add map_id_range_up()
2025-02-12 12:12:27 +01:00
user-return-notifier.c
…
user.c
…
usermode_driver.c
…
utsname_sysctl.c
treewide: const qualify ctl_tables where applicable
2025-01-28 13:48:37 +01:00
utsname.c
…
vhost_task.c
vhost: return task creation error instead of NULL
2025-03-01 02:52:52 -05:00
vmcore_info.c
…
watch_queue.c
vfs-6.15-rc1.pipe
2025-03-24 09:52:37 -07:00
watchdog_buddy.c
…
watchdog_perf.c
watchdog/hardlockup/perf: Warn if watchdog_ev is leaked
2025-03-06 12:07:39 +01:00
watchdog.c
A treewide hrtimer timer cleanup
2025-03-25 10:54:15 -07:00
workqueue_internal.h
…
workqueue.c
workqueue: An update for v6.14-rc4
2025-02-26 14:22:47 -08:00