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-rw-r--r--kernel/Makefile262
1 files changed, 133 insertions, 129 deletions
diff --git a/kernel/Makefile b/kernel/Makefile
index 470839d1a30e..e83669841b8c 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -1,203 +1,207 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux kernel.
#
-obj-y = fork.o exec_domain.o panic.o printk.o \
- cpu.o exit.o itimer.o time.o softirq.o resource.o \
- sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \
- signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
- rcupdate.o extable.o params.o posix-timers.o \
- kthread.o wait.o sys_ni.o posix-cpu-timers.o mutex.o \
- hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
+obj-y = fork.o exec_domain.o panic.o \
+ cpu.o exit.o softirq.o resource.o \
+ sysctl.o capability.o ptrace.o user.o \
+ signal.o sys.o umh.o workqueue.o pid.o task_work.o \
+ extable.o params.o \
+ kthread.o sys_ni.o nsproxy.o nstree.o nscommon.o \
notifier.o ksysfs.o cred.o reboot.o \
- async.o range.o groups.o lglock.o smpboot.o
+ async.o range.o smpboot.o ucount.o regset.o ksyms_common.o
+
+obj-$(CONFIG_MULTIUSER) += groups.o
+obj-$(CONFIG_VHOST_TASK) += vhost_task.o
ifdef CONFIG_FUNCTION_TRACER
-# Do not trace debug files and internal ftrace files
-CFLAGS_REMOVE_lockdep.o = -pg
-CFLAGS_REMOVE_lockdep_proc.o = -pg
-CFLAGS_REMOVE_mutex-debug.o = -pg
-CFLAGS_REMOVE_rtmutex-debug.o = -pg
-CFLAGS_REMOVE_cgroup-debug.o = -pg
-CFLAGS_REMOVE_irq_work.o = -pg
+# Do not trace internal ftrace files
+CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)
+endif
+
+# Branch profiling isn't noinstr-safe
+ifdef CONFIG_TRACE_BRANCH_PROFILING
+CFLAGS_context_tracking.o += -DDISABLE_BRANCH_PROFILING
endif
+# Prevents flicker of uninteresting __do_softirq()/__local_bh_disable_ip()
+# in coverage traces.
+KCOV_INSTRUMENT_softirq.o := n
+# Avoid KCSAN instrumentation in softirq ("No shared variables, all the data
+# are CPU local" => assume no data races), to reduce overhead in interrupts.
+KCSAN_SANITIZE_softirq.o = n
+# These are called from save_stack_trace() on slub debug path,
+# and produce insane amounts of uninteresting coverage.
+KCOV_INSTRUMENT_extable.o := n
+KCOV_INSTRUMENT_stacktrace.o := n
+# Don't self-instrument.
+KCOV_INSTRUMENT_kcov.o := n
+# If sanitizers detect any issues in kcov, it may lead to recursion
+# via printk, etc.
+KASAN_SANITIZE_kcov.o := n
+KCSAN_SANITIZE_kcov.o := n
+UBSAN_SANITIZE_kcov.o := n
+KMSAN_SANITIZE_kcov.o := n
+CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack) -fno-stack-protector
+
obj-y += sched/
+obj-y += locking/
obj-y += power/
-obj-y += cpu/
-
-obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
+obj-y += printk/
+obj-y += irq/
+obj-y += rcu/
+obj-y += livepatch/
+obj-y += liveupdate/
+obj-y += dma/
+obj-y += entry/
+obj-y += unwind/
+obj-$(CONFIG_MODULES) += module/
+
+obj-$(CONFIG_KCMP) += kcmp.o
obj-$(CONFIG_FREEZER) += freezer.o
obj-$(CONFIG_PROFILING) += profile.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += time/
-obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
-obj-$(CONFIG_LOCKDEP) += lockdep.o
-ifeq ($(CONFIG_PROC_FS),y)
-obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
-endif
-obj-$(CONFIG_FUTEX) += futex.o
-ifeq ($(CONFIG_COMPAT),y)
-obj-$(CONFIG_FUTEX) += futex_compat.o
-endif
-obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
-obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
-obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
+obj-$(CONFIG_FUTEX) += futex/
obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
obj-$(CONFIG_SMP) += smp.o
ifneq ($(CONFIG_SMP),y)
obj-y += up.o
endif
-obj-$(CONFIG_SMP) += spinlock.o
-obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
-obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
obj-$(CONFIG_UID16) += uid16.o
-obj-$(CONFIG_MODULES) += module.o
-obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
+obj-$(CONFIG_MODULE_SIG_FORMAT) += module_signature.o
obj-$(CONFIG_KALLSYMS) += kallsyms.o
+obj-$(CONFIG_KALLSYMS_SELFTEST) += kallsyms_selftest.o
obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
+obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o elfcorehdr.o
+obj-$(CONFIG_CRASH_RESERVE) += crash_reserve.o
+obj-$(CONFIG_KEXEC_CORE) += kexec_core.o
+obj-$(CONFIG_CRASH_DUMP) += crash_core.o
+obj-$(CONFIG_CRASH_DM_CRYPT) += crash_dump_dm_crypt.o
+obj-$(CONFIG_CRASH_DUMP_KUNIT_TEST) += crash_core_test.o
obj-$(CONFIG_KEXEC) += kexec.o
+obj-$(CONFIG_KEXEC_FILE) += kexec_file.o
+obj-$(CONFIG_KEXEC_ELF) += kexec_elf.o
obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
obj-$(CONFIG_COMPAT) += compat.o
-obj-$(CONFIG_CGROUPS) += cgroup.o
-obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
-obj-$(CONFIG_CPUSETS) += cpuset.o
+obj-$(CONFIG_CGROUPS) += cgroup/
obj-$(CONFIG_UTS_NS) += utsname.o
obj-$(CONFIG_USER_NS) += user_namespace.o
obj-$(CONFIG_PID_NS) += pid_namespace.o
obj-$(CONFIG_IKCONFIG) += configs.o
-obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
+obj-$(CONFIG_IKHEADERS) += kheaders.o
obj-$(CONFIG_SMP) += stop_machine.o
-obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
-obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
-obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
-obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
+obj-$(CONFIG_AUDITSYSCALL) += auditsc.o audit_watch.o audit_fsnotify.o audit_tree.o
obj-$(CONFIG_GCOV_KERNEL) += gcov/
+obj-$(CONFIG_KCOV) += kcov.o
obj-$(CONFIG_KPROBES) += kprobes.o
+obj-$(CONFIG_FAIL_FUNCTION) += fail_function.o
obj-$(CONFIG_KGDB) += debug/
obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
-obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
+obj-$(CONFIG_HARDLOCKUP_DETECTOR_BUDDY) += watchdog_buddy.o
+obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_perf.o
obj-$(CONFIG_SECCOMP) += seccomp.o
-obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
-obj-$(CONFIG_TREE_RCU) += rcutree.o
-obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
-obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
-obj-$(CONFIG_TINY_RCU) += rcutiny.o
-obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
obj-$(CONFIG_RELAY) += relay.o
obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
obj-$(CONFIG_LATENCYTOP) += latencytop.o
-obj-$(CONFIG_BINFMT_ELF) += elfcore.o
-obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
-obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
obj-$(CONFIG_FUNCTION_TRACER) += trace/
obj-$(CONFIG_TRACING) += trace/
obj-$(CONFIG_TRACE_CLOCK) += trace/
obj-$(CONFIG_RING_BUFFER) += trace/
obj-$(CONFIG_TRACEPOINTS) += trace/
+obj-$(CONFIG_RETHOOK) += trace/
obj-$(CONFIG_IRQ_WORK) += irq_work.o
obj-$(CONFIG_CPU_PM) += cpu_pm.o
+obj-$(CONFIG_BPF) += bpf/
+obj-$(CONFIG_KCSAN) += kcsan/
+obj-$(CONFIG_SHADOW_CALL_STACK) += scs.o
+obj-$(CONFIG_HAVE_STATIC_CALL) += static_call.o
+obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += static_call_inline.o
+obj-$(CONFIG_CFI) += cfi.o
obj-$(CONFIG_PERF_EVENTS) += events/
obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
obj-$(CONFIG_PADATA) += padata.o
-obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
+obj-$(CONFIG_TORTURE_TEST) += torture.o
+
+obj-$(CONFIG_HAS_IOMEM) += iomem.o
+obj-$(CONFIG_RSEQ) += rseq.o
+obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o
+
+obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_kunit.o
+obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o
-$(obj)/configs.o: $(obj)/config_data.h
+CFLAGS_kstack_erase.o += $(DISABLE_KSTACK_ERASE)
+CFLAGS_kstack_erase.o += $(call cc-option,-mgeneral-regs-only)
+obj-$(CONFIG_KSTACK_ERASE) += kstack_erase.o
+KASAN_SANITIZE_kstack_erase.o := n
+KCSAN_SANITIZE_kstack_erase.o := n
+KCOV_INSTRUMENT_kstack_erase.o := n
-# config_data.h contains the same information as ikconfig.h but gzipped.
-# Info from config_data can be extracted from /proc/config*
-targets += config_data.gz
-$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
+obj-$(CONFIG_SCF_TORTURE_TEST) += scftorture.o
+
+$(obj)/configs.o: $(obj)/config_data.gz
+
+targets += config_data config_data.gz
+$(obj)/config_data.gz: $(obj)/config_data FORCE
$(call if_changed,gzip)
- filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
-targets += config_data.h
-$(obj)/config_data.h: $(obj)/config_data.gz FORCE
- $(call filechk,ikconfiggz)
+filechk_cat = cat $<
-$(obj)/time.o: $(obj)/timeconst.h
+$(obj)/config_data: $(KCONFIG_CONFIG) FORCE
+ $(call filechk,cat)
-quiet_cmd_hzfile = HZFILE $@
- cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
+# kheaders_data.tar.xz
+$(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz
-targets += hz.bc
-$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
- $(call if_changed,hzfile)
+quiet_cmd_kheaders_data = GEN $@
+ cmd_kheaders_data = "$<" "$@" "$(obj)/kheaders-srclist" "$(obj)/kheaders-objlist" "$(KBUILD_BUILD_TIMESTAMP)"
+ cmd_kheaders_data_dep = cat $(depfile) >> $(dot-target).cmd; rm -f $(depfile)
-quiet_cmd_bc = BC $@
- cmd_bc = bc -q $(filter-out FORCE,$^) > $@
+define rule_kheaders_data
+ $(call cmd_and_savecmd,kheaders_data)
+ $(call cmd,kheaders_data_dep)
+endef
-targets += timeconst.h
-$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
- $(call if_changed,bc)
+targets += kheaders_data.tar.xz
+$(obj)/kheaders_data.tar.xz: $(src)/gen_kheaders.sh $(obj)/kheaders-srclist $(obj)/kheaders-objlist $(obj)/kheaders.md5 FORCE
+ $(call if_changed_rule,kheaders_data)
-ifeq ($(CONFIG_MODULE_SIG),y)
-#
-# Pull the signing certificate and any extra certificates into the kernel
+# generated headers in objtree
#
+# include/generated/utsversion.h is ignored because it is generated
+# after gen_kheaders.sh is executed. (utsversion.h is unneeded for kheaders)
+filechk_kheaders_objlist = \
+ for d in include "arch/$(SRCARCH)/include"; do \
+ find "$${d}/generated" ! -path "include/generated/utsversion.h" -a -name "*.h" -print; \
+ done
-quiet_cmd_touch = TOUCH $@
- cmd_touch = touch $@
+$(obj)/kheaders-objlist: FORCE
+ $(call filechk,kheaders_objlist)
-extra_certificates:
- $(call cmd,touch)
+# non-generated headers in srctree
+filechk_kheaders_srclist = \
+ for d in include "arch/$(SRCARCH)/include"; do \
+ find "$(srctree)/$${d}" -path "$(srctree)/$${d}/generated" -prune -o -name "*.h" -print; \
+ done
-kernel/modsign_certificate.o: signing_key.x509 extra_certificates
+$(obj)/kheaders-srclist: FORCE
+ $(call filechk,kheaders_srclist)
-###############################################################################
-#
-# If module signing is requested, say by allyesconfig, but a key has not been
-# supplied, then one will need to be generated to make sure the build does not
-# fail and that the kernel may be used afterwards.
-#
-###############################################################################
-ifndef CONFIG_MODULE_SIG_HASH
-$(error Could not determine digest type to use from kernel config)
-endif
+# Some files are symlinks. If symlinks are changed, kheaders_data.tar.xz should
+# be rebuilt.
+filechk_kheaders_md5sum = xargs -r -a $< stat -c %N | md5sum
-signing_key.priv signing_key.x509: x509.genkey
- @echo "###"
- @echo "### Now generating an X.509 key pair to be used for signing modules."
- @echo "###"
- @echo "### If this takes a long time, you might wish to run rngd in the"
- @echo "### background to keep the supply of entropy topped up. It"
- @echo "### needs to be run as root, and uses a hardware random"
- @echo "### number generator if one is available."
- @echo "###"
- openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
- -batch -x509 -config x509.genkey \
- -outform DER -out signing_key.x509 \
- -keyout signing_key.priv 2>&1
- @echo "###"
- @echo "### Key pair generated."
- @echo "###"
-
-x509.genkey:
- @echo Generating X.509 key generation config
- @echo >x509.genkey "[ req ]"
- @echo >>x509.genkey "default_bits = 4096"
- @echo >>x509.genkey "distinguished_name = req_distinguished_name"
- @echo >>x509.genkey "prompt = no"
- @echo >>x509.genkey "string_mask = utf8only"
- @echo >>x509.genkey "x509_extensions = myexts"
- @echo >>x509.genkey
- @echo >>x509.genkey "[ req_distinguished_name ]"
- @echo >>x509.genkey "O = Magrathea"
- @echo >>x509.genkey "CN = Glacier signing key"
- @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
- @echo >>x509.genkey
- @echo >>x509.genkey "[ myexts ]"
- @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
- @echo >>x509.genkey "keyUsage=digitalSignature"
- @echo >>x509.genkey "subjectKeyIdentifier=hash"
- @echo >>x509.genkey "authorityKeyIdentifier=keyid"
-endif
+$(obj)/kheaders.md5: $(obj)/kheaders-srclist FORCE
+ $(call filechk,kheaders_md5sum)
+
+clean-files := kheaders.md5 kheaders-srclist kheaders-objlist
generated by cgit (git 2.34.1) at 2025-12-27 00:49:16 +0000