Josh Poimboeuf 2cbb20b008 tracing: Disable branch profiling in noinstr code ... CONFIG_TRACE_BRANCH_PROFILING inserts a call to ftrace_likely_update() for each use of likely() or unlikely(). That breaks noinstr rules if the affected function is annotated as noinstr. Disable branch profiling for files with noinstr functions. In addition to some individual files, this also includes the entire arch/x86 subtree, as well as the kernel/entry, drivers/cpuidle, and drivers/idle directories, all of which are noinstr-heavy. Due to the nature of how sched binaries are built by combining multiple .c files into one, branch profiling is disabled more broadly across the sched code than would otherwise be needed. This fixes many warnings like the following: vmlinux.o: warning: objtool: do_syscall_64+0x40: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: __rdgsbase_inactive+0x33: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: handle_bug.isra.0+0x198: call to ftrace_likely_update() leaves .noinstr.text section ... Reported-by: Ingo Molnar <mingo@kernel.org> Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/fb94fc9303d48a5ed370498f54500cc4c338eb6d.1742586676.git.jpoimboe@kernel.org		2025-03-22 09:49:26 +01:00
..
bpf	BPF fixes:	2025-02-20 15:37:17 -08:00
cgroup	An reset signal polarity fix for the jd9365da-h3 panel, a folio handling	2025-02-21 09:16:35 +10:00
configs
debug	kdb: Remove unused flags stack	2025-01-25 08:22:26 +00:00
dma	dma-debug: fix physical address calculation for struct dma_debug_entry	2024-11-28 10:19:16 +01:00
entry	tracing: Disable branch profiling in noinstr code	2025-03-22 09:49:26 +01:00
events	perf/core: Fix perf_pmu_register() vs. perf_init_event()	2025-03-01 19:38:42 +01:00
futex	Fix a dangling pointer bug in the futex code used by the	2025-02-08 10:54:11 -08:00
gcov	gcov: clang: use correct function param names	2025-01-24 22:47:27 -08:00
irq	genirq: Remove unused CONFIG_GENERIC_PENDING_IRQ_CHIPFLAGS	2025-02-13 13:18:54 +01:00
kcsan
livepatch	livepatch: Add stack_order sysfs attribute	2024-12-09 11:44:03 +01:00
locking	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
module	Kbuild updates for v6.14	2025-01-31 12:07:07 -08:00
power	More power management updates for 6.14-rc1	2025-01-30 15:10:34 -08:00
printk	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
rcu	The various patchsets are summarized below. Plus of course many	2025-01-26 18:36:23 -08:00
sched	tracing: Disable branch profiling in noinstr code	2025-03-22 09:49:26 +01:00
time	tracing: Disable branch profiling in noinstr code	2025-03-22 09:49:26 +01:00
trace	Probes fixes for v6.14-rc4:	2025-03-03 07:28:15 -10:00
.gitignore
acct.c	acct: block access to kernel internal filesystems	2025-02-12 12:24:16 +01:00
async.c
audit.c	audit: Initialize lsmctx to avoid memory allocation error	2025-01-29 20:02:04 -05:00
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c	audit: fix suffixed '/' filename matching	2024-12-05 19:22:38 -05:00
auditsc.c	lsm/stable-6.14 PR 20250121	2025-01-21 20:03:04 -08:00
backtracetest.c
bounds.c
capability.c	kernel: remove get_task_comm() and print task comm directly	2025-01-12 20:21:15 -08:00
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c	The various patchsets are summarized below. Plus of course many	2025-01-26 18:36:23 -08:00
cpu_pm.c
crash_core.c
crash_reserve.c
cred.c	cred: remove old {override,revert}_creds() helpers	2024-12-02 11:25:09 +01:00
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	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
exit.h
extable.c
fail_function.c
fork.c	kernel: be more careful about dup_mmap() failures and uprobe registering	2025-02-01 03:53:25 -08:00
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
irq_work.c	kasan: make kasan_record_aux_stack_noalloc() the default behaviour	2025-01-13 22:40:36 -08:00
jump_label.c
kallsyms.c
kallsyms_internal.h
kallsyms_selftest.c	kallsyms: Use kthread_run_on_cpu()	2025-01-02 22:12:12 +01:00
kallsyms_selftest.h
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.kexec	crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32	2024-11-14 22:43:48 -08:00
Kconfig.locks
Kconfig.preempt	sched: No PREEMPT_RT=y for all{yes,mod}config	2024-11-07 15:25:05 +01:00
kcov.c	kcov: mark in_softirq_really() as __always_inline	2024-12-30 17:59:08 -08:00
kexec.c
kexec_core.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
kexec_elf.c
kexec_file.c
kexec_internal.h
kheaders.c	kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()	2024-12-24 09:46:49 +01:00
kprobes.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +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: avoid UAF for reorder_work	2025-01-19 12:44:28 +08:00
panic.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
params.c	module: Constify 'struct module_attribute'	2025-01-26 13:05:23 +01:00
pid.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +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
profile.c
ptrace.c
range.c
reboot.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
regset.c
relay.c
resource.c	kernel/resource: simplify API __devm_release_region() implementation	2025-01-12 20:20:58 -08:00
resource_kunit.c
rseq.c	rseq: Fix rseq registration with CONFIG_DEBUG_RSEQ	2025-02-21 14:21:02 +01:00
scftorture.c	scftorture: Handle NULL argument passed to scf_add_to_free_list().	2024-11-14 16:09:51 -08:00
scs.c
seccomp.c	seccomp: passthrough uretprobe systemcall without filtering	2025-02-06 12:48:21 -08:00
signal.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
smp.c	CSD-lock pull request for v6.14	2025-01-28 11:34:03 -08:00
smpboot.c
smpboot.h
softirq.c	softirq: Allow raising SCHED_SOFTIRQ from SMP-call-function on RT kernel	2024-12-02 12:01:27 +01:00
stackleak.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
stacktrace.c
static_call.c
static_call_inline.c	x86/static-call: provide a way to do very early static-call updates	2024-12-13 09:28:32 +01:00
stop_machine.c	stop_machine: Fix rcu_momentary_eqs() call in multi_cpu_stop()	2024-12-11 20:50:47 -08:00
sys.c	tracing: Add task_prctl_unknown tracepoint	2024-12-22 20:28:11 -08:00
sys_ni.c
sysctl-test.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
sysctl.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
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
tracepoint.c
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-return-notifier.c
user.c
user_namespace.c
usermode_driver.c
utsname.c
utsname_sysctl.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
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	watch_queue: Use page->private instead of page->index	2024-12-22 11:29:51 +01:00
watchdog.c	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
watchdog_buddy.c
watchdog_perf.c
workqueue.c	workqueue: An update for v6.14-rc4	2025-02-26 14:22:47 -08:00
workqueue_internal.h