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Commit 9ef40423 authored by Naveen N. Rao's avatar Naveen N. Rao Committed by Michael Ellerman
Browse files

powerpc64/ftrace: Use the generic version of ftrace_replace_code() 



Our implementation matches that of the generic version, which also
handles FTRACE_UPDATE_MODIFY_CALL. So, remove our implementation in
favor of the generic version.

Signed-off-by: default avatarNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 250122ba

arch/powerpc/kernel/trace/ftrace.c

+0 −36
Original line number Diff line number Diff line
@@ -485,42 +485,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) 
	return ret;

}



static int __ftrace_replace_code(struct dyn_ftrace *rec, int enable)

{

	unsigned long ftrace_addr = (unsigned long)FTRACE_ADDR;

	int ret;



	ret = ftrace_update_record(rec, enable);



	switch (ret) {

	case FTRACE_UPDATE_IGNORE:

		return 0;

	case FTRACE_UPDATE_MAKE_CALL:

		return ftrace_make_call(rec, ftrace_addr);

	case FTRACE_UPDATE_MAKE_NOP:

		return ftrace_make_nop(NULL, rec, ftrace_addr);

	}



	return 0;

}



void ftrace_replace_code(int enable)

{

	struct ftrace_rec_iter *iter;

	struct dyn_ftrace *rec;

	int ret;



	for (iter = ftrace_rec_iter_start(); iter;

	     iter = ftrace_rec_iter_next(iter)) {

		rec = ftrace_rec_iter_record(iter);

		ret = __ftrace_replace_code(rec, enable);

		if (ret) {

			ftrace_bug(ret, rec);

			return;

		}

	}

}



/*

 * Use the default ftrace_modify_all_code, but without

 * stop_machine().