| Message ID | 20210909090216.1955240-1-o451686892@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v4] ftrace: Cleanup ftrace_dyn_arch_init() | expand |
On Thu, 9 Sep 2021 17:02:16 +0800 Weizhao Ouyang <o451686892@gmail.com> wrote: > Most of ARCHs use empty ftrace_dyn_arch_init(), introduce a weak common > ftrace_dyn_arch_init() to cleanup them. FYI, I'm not ignoring this patch. I just wont be able to look at it until the merge window is over. -- Steve > > Signed-off-by: Weizhao Ouyang <o451686892@gmail.com> > Acked-by: Heiko Carstens <hca@linux.ibm.com> (s390) > Acked-by: Helge Deller <deller@gmx.de> (parisc) > > --- > Changes in v4: > -- revert the generic declaration > > Changes in v3: > -- fix unrecognized opcode on PowerPC > > Changes in v2: > -- correct CONFIG_DYNAMIC_FTRACE on PowerPC > -- add Acked-by tag > > --- > arch/arm/kernel/ftrace.c | 5 ----- > arch/arm64/kernel/ftrace.c | 5 ----- > arch/csky/kernel/ftrace.c | 5 ----- > arch/ia64/kernel/ftrace.c | 6 ------ > arch/microblaze/kernel/ftrace.c | 5 ----- > arch/nds32/kernel/ftrace.c | 5 ----- > arch/parisc/kernel/ftrace.c | 5 ----- > arch/riscv/kernel/ftrace.c | 5 ----- > arch/s390/kernel/ftrace.c | 5 ----- > arch/sh/kernel/ftrace.c | 5 ----- > arch/sparc/kernel/ftrace.c | 5 ----- > arch/x86/kernel/ftrace.c | 5 ----- > kernel/trace/ftrace.c | 5 +++++ > 13 files changed, 5 insertions(+), 61 deletions(-) > >
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c index 3c83b5d29697..a006585e1c09 100644 --- a/arch/arm/kernel/ftrace.c +++ b/arch/arm/kernel/ftrace.c @@ -193,11 +193,6 @@ int ftrace_make_nop(struct module *mod, return ret; } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/arm64/kernel/ftrace.c b/arch/arm64/kernel/ftrace.c index 7f467bd9db7a..fc62dfe73f93 100644 --- a/arch/arm64/kernel/ftrace.c +++ b/arch/arm64/kernel/ftrace.c @@ -236,11 +236,6 @@ void arch_ftrace_update_code(int command) command |= FTRACE_MAY_SLEEP; ftrace_modify_all_code(command); } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/csky/kernel/ftrace.c b/arch/csky/kernel/ftrace.c index b4a7ec1517ff..50bfcf129078 100644 --- a/arch/csky/kernel/ftrace.c +++ b/arch/csky/kernel/ftrace.c @@ -133,11 +133,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) (unsigned long)func, true, true); return ret; } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS diff --git a/arch/ia64/kernel/ftrace.c b/arch/ia64/kernel/ftrace.c index b2ab2d58fb30..d6360fd404ab 100644 --- a/arch/ia64/kernel/ftrace.c +++ b/arch/ia64/kernel/ftrace.c @@ -194,9 +194,3 @@ int ftrace_update_ftrace_func(ftrace_func_t func) flush_icache_range(addr, addr + 16); return 0; } - -/* run from kstop_machine */ -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} diff --git a/arch/microblaze/kernel/ftrace.c b/arch/microblaze/kernel/ftrace.c index 224eea40e1ee..188749d62709 100644 --- a/arch/microblaze/kernel/ftrace.c +++ b/arch/microblaze/kernel/ftrace.c @@ -163,11 +163,6 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr) return ret; } -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} - int ftrace_update_ftrace_func(ftrace_func_t func) { unsigned long ip = (unsigned long)(&ftrace_call); diff --git a/arch/nds32/kernel/ftrace.c b/arch/nds32/kernel/ftrace.c index 0e23e3a8df6b..f0ef4842d191 100644 --- a/arch/nds32/kernel/ftrace.c +++ b/arch/nds32/kernel/ftrace.c @@ -84,11 +84,6 @@ void _ftrace_caller(unsigned long parent_ip) /* restore all state needed by the compiler epilogue */ } -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} - static unsigned long gen_sethi_insn(unsigned long addr) { unsigned long opcode = 0x46000000; diff --git a/arch/parisc/kernel/ftrace.c b/arch/parisc/kernel/ftrace.c index 0a1e75af5382..01581f715737 100644 --- a/arch/parisc/kernel/ftrace.c +++ b/arch/parisc/kernel/ftrace.c @@ -94,11 +94,6 @@ int ftrace_disable_ftrace_graph_caller(void) #endif #ifdef CONFIG_DYNAMIC_FTRACE - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} int ftrace_update_ftrace_func(ftrace_func_t func) { return 0; diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c index 7f1e5203de88..4716f4cdc038 100644 --- a/arch/riscv/kernel/ftrace.c +++ b/arch/riscv/kernel/ftrace.c @@ -154,11 +154,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) return ret; } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c index 0a464d328467..3fd80397ff52 100644 --- a/arch/s390/kernel/ftrace.c +++ b/arch/s390/kernel/ftrace.c @@ -262,11 +262,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) return 0; } -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} - void arch_ftrace_update_code(int command) { if (ftrace_shared_hotpatch_trampoline(NULL)) diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c index 295c43315bbe..930001bb8c6a 100644 --- a/arch/sh/kernel/ftrace.c +++ b/arch/sh/kernel/ftrace.c @@ -252,11 +252,6 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr) return ftrace_modify_code(rec->ip, old, new); } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif /* CONFIG_DYNAMIC_FTRACE */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c index 684b84ce397f..eaead3da8e03 100644 --- a/arch/sparc/kernel/ftrace.c +++ b/arch/sparc/kernel/ftrace.c @@ -82,11 +82,6 @@ int ftrace_update_ftrace_func(ftrace_func_t func) new = ftrace_call_replace(ip, (unsigned long)func); return ftrace_modify_code(ip, old, new); } - -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} #endif #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 1b3ce3b4a2a2..23d221a9a3cd 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -252,11 +252,6 @@ void arch_ftrace_update_code(int command) ftrace_modify_all_code(command); } -int __init ftrace_dyn_arch_init(void) -{ - return 0; -} - /* Currently only x86_64 supports dynamic trampolines */ #ifdef CONFIG_X86_64 diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7efbc8aaf7f6..4c090323198d 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -6846,6 +6846,11 @@ void __init ftrace_free_init_mem(void) ftrace_free_mem(NULL, start, end); } +int __init __weak ftrace_dyn_arch_init(void) +{ + return 0; +} + void __init ftrace_init(void) { extern unsigned long __start_mcount_loc[];