Commit 5740a7c7 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
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s390/ftrace: add HAVE_DYNAMIC_FTRACE_WITH_ARGS support 



Add HAVE_DYNAMIC_FTRACE_WITH_ARGS support similar to commit 02a474ca
("ftrace/x86: Allow for arguments to be passed in to ftrace_regs by default").

s390's ftrace implementation always provides all registers with
pt_regs, therefore this is trivial.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 0c14c037

arch/s390/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -153,6 +153,7 @@ config S390 
	select HAVE_DEBUG_KMEMLEAK

	select HAVE_DMA_CONTIGUOUS

	select HAVE_DYNAMIC_FTRACE

	select HAVE_DYNAMIC_FTRACE_WITH_ARGS

	select HAVE_DYNAMIC_FTRACE_WITH_REGS

	select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES

	select HAVE_EFFICIENT_UNALIGNED_ACCESS

arch/s390/include/asm/ftrace.h

+9 −0
Original line number Diff line number Diff line
@@ -42,6 +42,15 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr) 
	return addr;

}



struct ftrace_regs {

	struct pt_regs regs;

};



static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs *fregs)

{

	return &fregs->regs;

}



/*

 * Even though the system call numbers are identical for s390/s390x a

 * different system call table is used for compat tasks. This may lead