iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/ftrace: add HAVE_DYNAMIC_FTRACE_WITH_ARGS support

Browse Source 
Add HAVE_DYNAMIC_FTRACE_WITH_ARGS support similar to commit 02a474ca266a
("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: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-10-04 16:10:24 +02:00 committed by Vasily Gorbik
parent 0c14c03795
commit 5740a7c71a
2 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/s390/Kconfig
View File

@ -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

9
arch/s390/include/asm/ftrace.h
View File

@ -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