Revert "rethook: x86: Add rethook x86 implementation"

This reverts commit 75caf33. Signed-off-by: Alexei Starovoitov <ast@kernel.org>
mariux64 · Mar 22, 2022 · 4e8ca13 · 4e8ca13
1 parent 0f8f803
commit 4e8ca13
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Showing 5 changed files with 1 addition and 129 deletions.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
@@ -221,7 +221,6 @@ config X86
 	select HAVE_KPROBES_ON_FTRACE
 	select HAVE_FUNCTION_ERROR_INJECTION
 	select HAVE_KRETPROBES
-	select HAVE_RETHOOK
 	select HAVE_KVM
 	select HAVE_LIVEPATCH			if X86_64
 	select HAVE_MIXED_BREAKPOINTS_REGS

diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h
@@ -5,7 +5,6 @@
 #include <linux/sched.h>
 #include <linux/ftrace.h>
 #include <linux/kprobes.h>
-#include <linux/rethook.h>
 #include <asm/ptrace.h>
 #include <asm/stacktrace.h>
 
@@ -17,7 +16,7 @@ struct unwind_state {
 	unsigned long stack_mask;
 	struct task_struct *task;
 	int graph_idx;
-#if defined(CONFIG_KRETPROBES) || defined(CONFIG_RETHOOK)
+#ifdef CONFIG_KRETPROBES
 	struct llist_node *kr_cur;
 #endif
 	bool error;
@@ -108,11 +107,6 @@ static inline
 unsigned long unwind_recover_kretprobe(struct unwind_state *state,
 				       unsigned long addr, unsigned long *addr_p)
 {
-#ifdef CONFIG_RETHOOK
-	if (is_rethook_trampoline(addr))
-		return rethook_find_ret_addr(state->task, (unsigned long)addr_p,
-					     &state->kr_cur);
-#endif
 #ifdef CONFIG_KRETPROBES
 	return is_kretprobe_trampoline(addr) ?
 		kretprobe_find_ret_addr(state->task, addr_p, &state->kr_cur) :

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
@@ -106,7 +106,6 @@ obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
 obj-$(CONFIG_FTRACE_SYSCALLS)	+= ftrace.o
 obj-$(CONFIG_X86_TSC)		+= trace_clock.o
 obj-$(CONFIG_TRACING)		+= trace.o
-obj-$(CONFIG_RETHOOK)		+= rethook.o
 obj-$(CONFIG_CRASH_CORE)	+= crash_core_$(BITS).o
 obj-$(CONFIG_KEXEC_CORE)	+= machine_kexec_$(BITS).o
 obj-$(CONFIG_KEXEC_CORE)	+= relocate_kernel_$(BITS).o crash.o

diff --git a/arch/x86/kernel/kprobes/common.h b/arch/x86/kernel/kprobes/common.h
@@ -6,7 +6,6 @@
 
 #include <asm/asm.h>
 #include <asm/frame.h>
-#include <asm/insn.h>
 
 #ifdef CONFIG_X86_64
 

diff --git a/arch/x86/kernel/rethook.c b/arch/x86/kernel/rethook.c