forked from luck/tmp_suning_uos_patched
d2bb076299
If -pg of gcc is enabled with CONFIG_FUNCTION_TRACER=y. a calling to _mcount will be inserted into each kernel function. so, there is a possibility to trace the kernel functions in _mcount. This patch add the MIPS specific _mcount support for static function tracing. by default, ftrace_trace_function is initialized as ftrace_stub(an empty function), so, the default _mcount will introduce very little overhead. after enabling ftrace in user-space, it will jump to a real tracing function and do static function tracing for us. and -ffunction-sections is incompatible with -pg, so, disable it when ftracer is enabled. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Nicholas Mc Guire <der.herr@hofr.at> Cc: zhangfx@lemote.com Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/672/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
105 lines
3.6 KiB
Makefile
105 lines
3.6 KiB
Makefile
#
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# Makefile for the Linux/MIPS kernel.
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#
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CPPFLAGS_vmlinux.lds := $(KBUILD_CFLAGS)
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extra-y := head.o init_task.o vmlinux.lds
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obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \
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ptrace.o reset.o setup.o signal.o syscall.o \
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time.o topology.o traps.o unaligned.o watch.o
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ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_early_printk.o = -pg
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endif
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obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm1480.o
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obj-$(CONFIG_CEVT_R4K_LIB) += cevt-r4k.o
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obj-$(CONFIG_MIPS_MT_SMTC) += cevt-smtc.o
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obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o
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obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o
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obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o
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obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o
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obj-$(CONFIG_CSRC_BCM1480) += csrc-bcm1480.o
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obj-$(CONFIG_CSRC_IOASIC) += csrc-ioasic.o
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obj-$(CONFIG_CSRC_POWERTV) += csrc-powertv.o
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obj-$(CONFIG_CSRC_R4K_LIB) += csrc-r4k.o
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obj-$(CONFIG_CSRC_SB1250) += csrc-sb1250.o
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obj-$(CONFIG_SYNC_R4K) += sync-r4k.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-$(CONFIG_MODULES) += mips_ksyms.o module.o
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
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obj-$(CONFIG_CPU_LOONGSON2) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_MIPS32) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_MIPS64) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R3000) += r2300_fpu.o r2300_switch.o
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obj-$(CONFIG_CPU_R4300) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R4X00) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R5000) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R6000) += r6000_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R5432) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R5500) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R8000) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_RM7000) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_RM9000) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_NEVADA) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_R10000) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_SB1) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_TX39XX) += r2300_fpu.o r2300_switch.o
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obj-$(CONFIG_CPU_TX49XX) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_VR41XX) += r4k_fpu.o r4k_switch.o
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obj-$(CONFIG_CPU_CAVIUM_OCTEON) += octeon_switch.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SMP_UP) += smp-up.o
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obj-$(CONFIG_MIPS_MT) += mips-mt.o
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obj-$(CONFIG_MIPS_MT_FPAFF) += mips-mt-fpaff.o
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obj-$(CONFIG_MIPS_MT_SMTC) += smtc.o smtc-asm.o smtc-proc.o
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obj-$(CONFIG_MIPS_MT_SMP) += smp-mt.o
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obj-$(CONFIG_MIPS_CMP) += smp-cmp.o
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obj-$(CONFIG_CPU_MIPSR2) += spram.o
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obj-$(CONFIG_MIPS_VPE_LOADER) += vpe.o
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obj-$(CONFIG_MIPS_VPE_APSP_API) += rtlx.o
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obj-$(CONFIG_MIPS_APSP_KSPD) += kspd.o
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obj-$(CONFIG_I8259) += i8259.o
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obj-$(CONFIG_IRQ_CPU) += irq_cpu.o
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obj-$(CONFIG_IRQ_CPU_RM7K) += irq-rm7000.o
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obj-$(CONFIG_IRQ_CPU_RM9K) += irq-rm9000.o
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obj-$(CONFIG_MIPS_MSC) += irq-msc01.o
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obj-$(CONFIG_IRQ_TXX9) += irq_txx9.o
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obj-$(CONFIG_IRQ_GT641XX) += irq-gt641xx.o
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obj-$(CONFIG_IRQ_GIC) += irq-gic.o
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obj-$(CONFIG_32BIT) += scall32-o32.o
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obj-$(CONFIG_64BIT) += scall64-64.o
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obj-$(CONFIG_MIPS32_COMPAT) += linux32.o ptrace32.o signal32.o
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obj-$(CONFIG_MIPS32_N32) += binfmt_elfn32.o scall64-n32.o signal_n32.o
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obj-$(CONFIG_MIPS32_O32) += binfmt_elfo32.o scall64-o32.o
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obj-$(CONFIG_KGDB) += kgdb.o
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obj-$(CONFIG_PROC_FS) += proc.o
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obj-$(CONFIG_64BIT) += cpu-bugs64.o
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obj-$(CONFIG_I8253) += i8253.o
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obj-$(CONFIG_GPIO_TXX9) += gpio_txx9.o
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obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
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obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o
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obj-$(CONFIG_MIPS_CPUFREQ) += cpufreq/
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EXTRA_CFLAGS += -Werror
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