From acd55b1005768266e899b0da51babcb57e75e846 Mon Sep 17 00:00:00 2001 From: "Naveen N. Rao" Date: Thu, 19 Apr 2018 12:34:02 +0530 Subject: [PATCH] powerpc64/ftrace: Add helpers to hard disable ftrace Add some helpers to enable/disable ftrace through paca->ftrace_enabled. Signed-off-by: Naveen N. Rao Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/ftrace.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h index ebfc0b846bb5..3b5e85a72e10 100644 --- a/arch/powerpc/include/asm/ftrace.h +++ b/arch/powerpc/include/asm/ftrace.h @@ -82,6 +82,23 @@ static inline bool arch_syscall_match_sym_name(const char *sym, const char *name return !strcmp(sym + 4, name + 3); } #endif /* CONFIG_FTRACE_SYSCALLS && PPC64_ELF_ABI_v1 */ + +#ifdef CONFIG_PPC64 +#include + +static inline void this_cpu_disable_ftrace(void) +{ + get_paca()->ftrace_enabled = 0; +} + +static inline void this_cpu_enable_ftrace(void) +{ + get_paca()->ftrace_enabled = 1; +} +#else /* CONFIG_PPC64 */ +static inline void this_cpu_disable_ftrace(void) { } +static inline void this_cpu_enable_ftrace(void) { } +#endif /* CONFIG_PPC64 */ #endif /* !__ASSEMBLY__ */ #endif /* _ASM_POWERPC_FTRACE */ -- 2.45.2