diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/ftrace.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/entry_32.S | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/mcount_64.S | 13 | ||||
| -rw-r--r-- | arch/x86/kvm/mmutrace.h | 2 | ||||
| -rw-r--r-- | arch/x86/power/cpu.c | 4 |
7 files changed, 9 insertions, 25 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index d24887b645d..2840c27d447 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -54,7 +54,6 @@ config X86 select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_GRAPH_FP_TEST - select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_SYSCALL_TRACEPOINTS select SYSCTL_EXCEPTION_TRACE select HAVE_KVM diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h index 0525a8bdf65..e1f7fecaa7d 100644 --- a/arch/x86/include/asm/ftrace.h +++ b/arch/x86/include/asm/ftrace.h @@ -68,6 +68,8 @@ struct dyn_arch_ftrace { int ftrace_int3_handler(struct pt_regs *regs); +#define FTRACE_GRAPH_TRAMP_ADDR FTRACE_GRAPH_ADDR + #endif /* CONFIG_DYNAMIC_FTRACE */ #endif /* __ASSEMBLY__ */ #endif /* CONFIG_FUNCTION_TRACER */ diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 0d0c9d4ab6d..47c410d99f5 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -1059,9 +1059,6 @@ ENTRY(mcount) END(mcount) ENTRY(ftrace_caller) - cmpl $0, function_trace_stop - jne ftrace_stub - pushl %eax pushl %ecx pushl %edx @@ -1093,8 +1090,6 @@ END(ftrace_caller) ENTRY(ftrace_regs_caller) pushf /* push flags before compare (in cs location) */ - cmpl $0, function_trace_stop - jne ftrace_restore_flags /* * i386 does not save SS and ESP when coming from kernel. @@ -1153,7 +1148,6 @@ GLOBAL(ftrace_regs_call) popf /* Pop flags at end (no addl to corrupt flags) */ jmp ftrace_ret -ftrace_restore_flags: popf jmp ftrace_stub #else /* ! CONFIG_DYNAMIC_FTRACE */ @@ -1162,9 +1156,6 @@ ENTRY(mcount) cmpl $__PAGE_OFFSET, %esp jb ftrace_stub /* Paging not enabled yet? */ - cmpl $0, function_trace_stop - jne ftrace_stub - cmpl $ftrace_stub, ftrace_trace_function jnz trace #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index cbc4a91b131..3386dc9aa33 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -703,6 +703,9 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr, unsigned long return_hooker = (unsigned long) &return_to_handler; + if (unlikely(ftrace_graph_is_dead())) + return; + if (unlikely(atomic_read(¤t->tracing_graph_pause))) return; diff --git a/arch/x86/kernel/mcount_64.S b/arch/x86/kernel/mcount_64.S index c050a015316..c73aecf10d3 100644 --- a/arch/x86/kernel/mcount_64.S +++ b/arch/x86/kernel/mcount_64.S @@ -46,10 +46,6 @@ END(function_hook) .endm ENTRY(ftrace_caller) - /* Check if tracing was disabled (quick check) */ - cmpl $0, function_trace_stop - jne ftrace_stub - ftrace_caller_setup /* regs go into 4th parameter (but make it NULL) */ movq $0, %rcx @@ -73,10 +69,6 @@ ENTRY(ftrace_regs_caller) /* Save the current flags before compare (in SS location)*/ pushfq - /* Check if tracing was disabled (quick check) */ - cmpl $0, function_trace_stop - jne ftrace_restore_flags - /* skip=8 to skip flags saved in SS */ ftrace_caller_setup 8 @@ -131,7 +123,7 @@ GLOBAL(ftrace_regs_call) popfq jmp ftrace_return -ftrace_restore_flags: + popfq jmp ftrace_stub @@ -141,9 +133,6 @@ END(ftrace_regs_caller) #else /* ! CONFIG_DYNAMIC_FTRACE */ ENTRY(function_hook) - cmpl $0, function_trace_stop - jne ftrace_stub - cmpq $ftrace_stub, ftrace_trace_function jnz trace diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h index 9d2e0ffcb19..2e5652b62fd 100644 --- a/arch/x86/kvm/mmutrace.h +++ b/arch/x86/kvm/mmutrace.h @@ -22,7 +22,7 @@ __entry->unsync = sp->unsync; #define KVM_MMU_PAGE_PRINTK() ({ \ - const char *ret = p->buffer + p->len; \ + const char *ret = trace_seq_buffer_ptr(p); \ static const char *access_str[] = { \ "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux" \ }; \ diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c index 424f4c97a44..6ec7910f59b 100644 --- a/arch/x86/power/cpu.c +++ b/arch/x86/power/cpu.c @@ -165,7 +165,7 @@ static void fix_processor_context(void) * by __save_processor_state() * @ctxt - structure to load the registers contents from */ -static void __restore_processor_state(struct saved_context *ctxt) +static void notrace __restore_processor_state(struct saved_context *ctxt) { if (ctxt->misc_enable_saved) wrmsrl(MSR_IA32_MISC_ENABLE, ctxt->misc_enable); @@ -239,7 +239,7 @@ static void __restore_processor_state(struct saved_context *ctxt) } /* Needed by apm.c */ -void restore_processor_state(void) +void notrace restore_processor_state(void) { __restore_processor_state(&saved_context); } |