2008-01-30 20:32:27 +08:00
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#
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# Makefile for the linux kernel.
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#
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2008-06-02 14:26:23 +08:00
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extra-y := head_$(BITS).o head$(BITS).o head.o init_task.o vmlinux.lds
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2008-01-30 20:32:27 +08:00
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CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
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2008-02-14 15:38:49 +08:00
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2008-10-07 07:06:12 +08:00
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ifdef CONFIG_FUNCTION_TRACER
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2008-07-09 21:42:09 +08:00
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# Do not profile debug and lowlevel utilities
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2008-07-17 19:26:50 +08:00
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CFLAGS_REMOVE_tsc.o = -pg
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2008-05-15 09:30:32 +08:00
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CFLAGS_REMOVE_rtc.o = -pg
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2008-07-24 04:28:58 +08:00
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CFLAGS_REMOVE_paravirt-spinlocks.o = -pg
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2008-10-23 21:33:08 +08:00
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CFLAGS_REMOVE_ftrace.o = -pg
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2008-05-15 09:30:32 +08:00
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endif
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2008-11-11 14:03:45 +08:00
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ifdef CONFIG_FUNCTION_RET_TRACER
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# Don't trace __switch_to() but let it for function tracer
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CFLAGS_REMOVE_process_32.o = -pg
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endif
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2008-02-14 15:38:49 +08:00
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#
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# vsyscalls (which work on the user stack) should have
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# no stack-protector checks:
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#
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nostackp := $(call cc-option, -fno-stack-protector)
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CFLAGS_vsyscall_64.o := $(PROFILING) -g0 $(nostackp)
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CFLAGS_hpet.o := $(nostackp)
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2008-07-11 21:09:15 +08:00
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CFLAGS_tsc.o := $(nostackp)
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2008-01-30 20:32:27 +08:00
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obj-y := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
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2008-10-16 17:32:24 +08:00
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obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
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2008-01-30 20:33:10 +08:00
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obj-y += time_$(BITS).o ioport.o ldt.o
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2008-06-26 08:54:23 +08:00
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obj-y += setup.o i8259.o irqinit_$(BITS).o setup_percpu.o
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2008-07-10 22:21:38 +08:00
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obj-$(CONFIG_X86_VISWS) += visws_quirks.o
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2008-06-22 06:39:41 +08:00
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obj-$(CONFIG_X86_32) += probe_roms_32.o
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2008-09-30 19:12:15 +08:00
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obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
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2008-06-22 07:25:37 +08:00
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obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
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2008-06-17 10:58:28 +08:00
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obj-y += bootflag.o e820.o
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2008-04-09 00:20:43 +08:00
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obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
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2008-04-09 00:20:52 +08:00
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obj-y += alternative.o i8253.o pci-nommu.o
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2008-07-02 02:43:34 +08:00
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obj-y += tsc.o io_delay.o rtc.o
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2008-01-30 20:32:27 +08:00
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2008-03-21 22:23:19 +08:00
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obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
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2008-03-11 06:28:04 +08:00
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obj-y += process.o
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2008-07-30 01:29:19 +08:00
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obj-y += i387.o xsave.o
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2008-01-30 20:32:27 +08:00
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obj-y += ptrace.o
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2008-11-25 15:45:13 +08:00
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obj-$(CONFIG_X86_DS) += ds.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_32) += tls.o
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obj-$(CONFIG_IA32_EMULATION) += tls.o
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obj-y += step.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-y += cpu/
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obj-y += acpi/
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2008-01-30 20:32:51 +08:00
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obj-$(CONFIG_X86_BIOS_REBOOT) += reboot.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_MCA) += mca_32.o
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obj-$(CONFIG_X86_MSR) += msr.o
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obj-$(CONFIG_X86_CPUID) += cpuid.o
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obj-$(CONFIG_PCI) += early-quirks.o
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2008-02-04 23:47:55 +08:00
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apm-y := apm_32.o
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obj-$(CONFIG_APM) += apm.o
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2008-03-20 01:26:14 +08:00
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obj-$(CONFIG_X86_SMP) += smp.o
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2008-03-04 01:12:54 +08:00
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obj-$(CONFIG_X86_SMP) += smpboot.o tsc_sync.o ipi.o tlb_$(BITS).o
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2008-03-04 01:12:45 +08:00
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obj-$(CONFIG_X86_32_SMP) += smpcommon.o
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2008-03-20 01:26:14 +08:00
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obj-$(CONFIG_X86_64_SMP) += tsc_sync.o smpcommon.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_TRAMPOLINE) += trampoline_$(BITS).o
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2008-04-05 03:43:18 +08:00
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obj-$(CONFIG_X86_MPPARSE) += mpparse.o
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2008-08-24 17:01:56 +08:00
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obj-$(CONFIG_X86_LOCAL_APIC) += apic.o nmi.o
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2008-08-20 11:50:42 +08:00
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obj-$(CONFIG_X86_IO_APIC) += io_apic.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_REBOOTFIXUPS) += reboot_fixups_32.o
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ftrace: dynamic enabling/disabling of function calls
This patch adds a feature to dynamically replace the ftrace code
with the jmps to allow a kernel with ftrace configured to run
as fast as it can without it configured.
The way this works, is on bootup (if ftrace is enabled), a ftrace
function is registered to record the instruction pointer of all
places that call the function.
Later, if there's still any code to patch, a kthread is awoken
(rate limited to at most once a second) that performs a stop_machine,
and replaces all the code that was called with a jmp over the call
to ftrace. It only replaces what was found the previous time. Typically
the system reaches equilibrium quickly after bootup and there's no code
patching needed at all.
e.g.
call ftrace /* 5 bytes */
is replaced with
jmp 3f /* jmp is 2 bytes and we jump 3 forward */
3:
When we want to enable ftrace for function tracing, the IP recording
is removed, and stop_machine is called again to replace all the locations
of that were recorded back to the call of ftrace. When it is disabled,
we replace the code back to the jmp.
Allocation is done by the kthread. If the ftrace recording function is
called, and we don't have any record slots available, then we simply
skip that call. Once a second a new page (if needed) is allocated for
recording new ftrace function calls. A large batch is allocated at
boot up to get most of the calls there.
Because we do this via stop_machine, we don't have to worry about another
CPU executing a ftrace call as we modify it. But we do need to worry
about NMI's so all functions that might be called via nmi must be
annotated with notrace_nmi. When this code is configured in, the NMI code
will not call notrace.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-13 03:20:42 +08:00
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obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
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2008-11-11 14:03:45 +08:00
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obj-$(CONFIG_FUNCTION_RET_TRACER) += ftrace.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o
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obj-$(CONFIG_KEXEC) += relocate_kernel_$(BITS).o crash.o
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obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o
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obj-$(CONFIG_X86_NUMAQ) += numaq_32.o
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2008-08-28 14:01:16 +08:00
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obj-$(CONFIG_X86_ES7000) += es7000_32.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_SUMMIT_NUMA) += summit_32.o
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2008-03-20 15:41:16 +08:00
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obj-y += vsmp_64.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_KPROBES) += kprobes.o
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obj-$(CONFIG_MODULES) += module_$(BITS).o
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obj-$(CONFIG_EFI) += efi.o efi_$(BITS).o efi_stub_$(BITS).o
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obj-$(CONFIG_DOUBLEFAULT) += doublefault_32.o
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2008-04-18 02:05:37 +08:00
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obj-$(CONFIG_KGDB) += kgdb.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_VM86) += vm86_32.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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obj-$(CONFIG_HPET_TIMER) += hpet.o
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2007-10-18 04:06:30 +08:00
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_K8_NB) += k8.o
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obj-$(CONFIG_MGEODE_LX) += geode_32.o mfgpt_32.o
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2008-01-30 20:34:09 +08:00
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obj-$(CONFIG_DEBUG_RODATA_TEST) += test_rodata.o
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obj-$(CONFIG_DEBUG_NX_TEST) += test_nx.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_VMI) += vmi_32.o vmiclock_32.o
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2008-02-23 01:21:36 +08:00
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obj-$(CONFIG_KVM_GUEST) += kvm.o
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2008-02-16 03:52:48 +08:00
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obj-$(CONFIG_KVM_CLOCK) += kvmclock.o
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2008-07-24 04:28:58 +08:00
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obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt_patch_$(BITS).o paravirt-spinlocks.o
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2008-06-03 22:17:29 +08:00
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obj-$(CONFIG_PARAVIRT_CLOCK) += pvclock.o
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2008-01-30 20:33:18 +08:00
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2008-05-07 18:39:56 +08:00
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obj-$(CONFIG_PCSPKR_PLATFORM) += pcspeaker.o
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2008-01-30 20:32:27 +08:00
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2008-02-04 23:47:55 +08:00
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obj-$(CONFIG_SCx200) += scx200.o
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scx200-y += scx200_32.o
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2008-01-30 20:32:27 +08:00
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2008-04-29 15:59:53 +08:00
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obj-$(CONFIG_OLPC) += olpc.o
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2008-09-23 18:08:44 +08:00
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microcode-y := microcode_core.o
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microcode-$(CONFIG_MICROCODE_INTEL) += microcode_intel.o
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microcode-$(CONFIG_MICROCODE_AMD) += microcode_amd.o
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obj-$(CONFIG_MICROCODE) += microcode.o
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2008-01-30 20:32:27 +08:00
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###
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# 64 bit specific files
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ifeq ($(CONFIG_X86_64),y)
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2008-06-02 21:56:14 +08:00
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obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
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2008-10-04 00:59:50 +08:00
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obj-y += bios_uv.o uv_irq.o uv_sysfs.o
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2008-07-11 02:16:54 +08:00
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obj-y += genx2apic_cluster.o
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2008-07-11 02:16:59 +08:00
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obj-y += genx2apic_phys.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o
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obj-$(CONFIG_AUDIT) += audit_64.o
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obj-$(CONFIG_GART_IOMMU) += pci-gart_64.o aperture_64.o
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obj-$(CONFIG_CALGARY_IOMMU) += pci-calgary_64.o tce_64.o
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2008-06-27 03:27:54 +08:00
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obj-$(CONFIG_AMD_IOMMU) += amd_iommu_init.o amd_iommu.o
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2008-01-30 20:32:27 +08:00
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obj-$(CONFIG_SWIOTLB) += pci-swiotlb_64.o
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2008-02-27 03:04:17 +08:00
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obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o
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2008-01-30 20:32:27 +08:00
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endif
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