19bc6cb640
Uprobes is the user-space counterpart to kprobes, this patch adds
uprobes support for LoongArch.
Here is a simple example with CONFIG_UPROBE_EVENTS=y:
# cat test.c
#include <stdio.h>
int add(int a, int b)
{
return a + b;
}
int main()
{
return add(2, 7);
}
# gcc test.c -o /tmp/test
# nm /tmp/test | grep add
0000000120004194 T add
# cd /sys/kernel/debug/tracing
# echo > uprobe_events
# echo "p:myuprobe /tmp/test:0x4194 %r4 %r5" > uprobe_events
# echo "r:myuretprobe /tmp/test:0x4194 %r4" >> uprobe_events
# echo 1 > events/uprobes/enable
# echo 1 > tracing_on
# /tmp/test
# cat trace
...
# TASK-PID CPU# ||||| TIMESTAMP FUNCTION
# | | | ||||| | |
test-1060 [001] DNZff 1015.770620: myuprobe: (0x120004194) arg1=0x2 arg2=0x7
test-1060 [001] DNZff 1015.770930: myuretprobe: (0x1200041f0 <- 0x120004194) arg1=0x9
Tested-by: Jeff Xie <xiehuan09@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
64 lines
1.7 KiB
Makefile
64 lines
1.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux/LoongArch kernel.
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#
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extra-y := vmlinux.lds
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obj-y += head.o cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
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traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \
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elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o \
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alternative.o unwind.o
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obj-$(CONFIG_ACPI) += acpi.o
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obj-$(CONFIG_EFI) += efi.o
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obj-$(CONFIG_CPU_HAS_FPU) += fpu.o kfpu.o
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obj-$(CONFIG_ARCH_STRICT_ALIGN) += unaligned.o
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ifdef CONFIG_FUNCTION_TRACER
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ifndef CONFIG_DYNAMIC_FTRACE
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obj-y += mcount.o ftrace.o
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CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
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else
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obj-y += mcount_dyn.o ftrace_dyn.o
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CFLAGS_REMOVE_ftrace_dyn.o = $(CC_FLAGS_FTRACE)
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endif
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CFLAGS_REMOVE_inst.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_time.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_perf_event.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_rethook.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_rethook_trampoline.o = $(CC_FLAGS_FTRACE)
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endif
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obj-$(CONFIG_MODULES) += module.o module-sections.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-$(CONFIG_PROC_FS) += proc.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_NUMA) += numa.o
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obj-$(CONFIG_MAGIC_SYSRQ) += sysrq.o
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obj-$(CONFIG_RELOCATABLE) += relocate.o
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obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
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obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o
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obj-$(CONFIG_UNWINDER_PROLOGUE) += unwind_prologue.o
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obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_regs.o
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obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
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obj-$(CONFIG_KPROBES) += kprobes.o
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obj-$(CONFIG_RETHOOK) += rethook.o rethook_trampoline.o
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obj-$(CONFIG_UPROBES) += uprobes.o
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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CPPFLAGS_vmlinux.lds := $(KBUILD_CFLAGS)
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