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authorIngo Molnar <mingo@elte.hu>2008-10-22 09:08:14 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-22 09:08:14 +0200
commitdebfcaf93ed500a051489db6646d71f29fe86a68 (patch)
tree7ba189b6dd654022ecc655b68e3c0a4573627706
parent2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff)
parent81520a1b0649d0701205b818714a8c1e1cfbbb5b (diff)
Merge branch 'tracing/ftrace' into tracing/urgent
-rw-r--r--Makefile2
-rw-r--r--arch/arm/Kconfig4
-rw-r--r--arch/arm/boot/compressed/Makefile2
-rw-r--r--arch/arm/include/asm/ftrace.h2
-rw-r--r--arch/arm/kernel/armksyms.c2
-rw-r--r--arch/arm/kernel/entry-common.S4
-rw-r--r--arch/powerpc/Kconfig2
-rw-r--r--arch/powerpc/Makefile2
-rw-r--r--arch/powerpc/include/asm/ftrace.h2
-rw-r--r--arch/powerpc/kernel/Makefile2
-rw-r--r--arch/powerpc/kernel/entry_32.S2
-rw-r--r--arch/powerpc/kernel/entry_64.S2
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c2
-rw-r--r--arch/powerpc/platforms/powermac/Makefile2
-rw-r--r--arch/sparc64/Kconfig2
-rw-r--r--arch/sparc64/Kconfig.debug2
-rw-r--r--arch/sparc64/lib/mcount.S4
-rw-r--r--arch/x86/Kconfig2
-rw-r--r--arch/x86/kernel/Makefile2
-rw-r--r--arch/x86/kernel/entry_32.S4
-rw-r--r--arch/x86/kernel/entry_64.S4
-rw-r--r--arch/x86/kernel/ftrace.c6
-rw-r--r--arch/x86/kernel/i386_ksyms_32.c2
-rw-r--r--arch/x86/kernel/x8664_ksyms_64.c2
-rw-r--r--arch/x86/xen/Makefile2
-rw-r--r--include/asm-x86/ftrace.h4
-rw-r--r--include/linux/ftrace.h12
-rw-r--r--kernel/Makefile4
-rw-r--r--kernel/sysctl.c2
-rw-r--r--kernel/trace/Kconfig22
-rw-r--r--kernel/trace/Makefile6
-rw-r--r--kernel/trace/ftrace.c43
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace.h2
-rw-r--r--kernel/trace/trace_functions.c2
-rw-r--r--kernel/trace/trace_irqsoff.c4
-rw-r--r--kernel/trace/trace_sched_wakeup.c4
-rw-r--r--kernel/trace/trace_selftest.c4
-rw-r--r--kernel/trace/trace_stack.c4
-rw-r--r--lib/Makefile2
40 files changed, 113 insertions, 68 deletions
diff --git a/Makefile b/Makefile
index 16e3fbb968a..b7eb70b13ca 100644
--- a/Makefile
+++ b/Makefile
@@ -536,7 +536,7 @@ KBUILD_CFLAGS += -g
KBUILD_AFLAGS += -gdwarf-2
endif
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
KBUILD_CFLAGS += -pg
endif
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index df39d20f742..600733426ae 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -16,8 +16,8 @@ config ARM
select HAVE_ARCH_KGDB
select HAVE_KPROBES if (!XIP_KERNEL)
select HAVE_KRETPROBES if (HAVE_KPROBES)
- select HAVE_FTRACE if (!XIP_KERNEL)
- select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
+ select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
+ select HAVE_DYNAMIC_FTRACE if (HAVE_FUNCTION_TRACER)
select HAVE_GENERIC_DMA_COHERENT
help
The ARM series is a line of low-power-consumption RISC chip designs
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 7a03f200788..c47f2a3f8f8 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -70,7 +70,7 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
targets := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
head.o misc.o $(OBJS)
-ifeq ($(CONFIG_FTRACE),y)
+ifeq ($(CONFIG_FUNCTION_TRACER),y)
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
endif
diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
index 584ef9a8e5a..39c8bc1a006 100644
--- a/arch/arm/include/asm/ftrace.h
+++ b/arch/arm/include/asm/ftrace.h
@@ -1,7 +1,7 @@
#ifndef _ASM_ARM_FTRACE
#define _ASM_ARM_FTRACE
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#define MCOUNT_ADDR ((long)(mcount))
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 2357b1cf1cf..c74f766ffc1 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -183,6 +183,6 @@ EXPORT_SYMBOL(_find_next_bit_be);
EXPORT_SYMBOL(copy_page);
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
EXPORT_SYMBOL(mcount);
#endif
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 3aa14dcc5ba..06269ea375c 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -101,7 +101,7 @@ ENDPROC(ret_from_fork)
#undef CALL
#define CALL(x) .long x
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(mcount)
stmdb sp!, {r0-r3, lr}
@@ -149,7 +149,7 @@ trace:
ftrace_stub:
mov pc, lr
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
/*=============================================================================
* SWI handler
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9391199d9e7..441ce06174f 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -112,7 +112,7 @@ config PPC
bool
default y
select HAVE_DYNAMIC_FTRACE
- select HAVE_FTRACE
+ select HAVE_FUNCTION_TRACER
select ARCH_WANT_OPTIONAL_GPIOLIB
select HAVE_IDE
select HAVE_IOREMAP_PROT
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 24dd1a37f8f..1f066706994 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -122,7 +122,7 @@ KBUILD_CFLAGS += -mcpu=powerpc
endif
# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
-ifeq ($(CONFIG_FTRACE),y)
+ifeq ($(CONFIG_FUNCTION_TRACER),y)
KBUILD_CFLAGS += -mno-sched-epilog
endif
diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index de921326cca..b298f7a631e 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -1,7 +1,7 @@
#ifndef _ASM_POWERPC_FTRACE
#define _ASM_POWERPC_FTRACE
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#define MCOUNT_ADDR ((long)(_mcount))
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fdb58253fa5..92673b43858 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -12,7 +12,7 @@ CFLAGS_prom_init.o += -fPIC
CFLAGS_btext.o += -fPIC
endif
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code
CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog
CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 1cbbf703364..7ecc0d1855c 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -1158,7 +1158,7 @@ machine_check_in_rtas:
#endif /* CONFIG_PPC_RTAS */
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
_GLOBAL(mcount)
_GLOBAL(_mcount)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index fd8b4bae9b0..e6d52845854 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -884,7 +884,7 @@ _GLOBAL(enter_prom)
mtlr r0
blr
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
_GLOBAL(mcount)
_GLOBAL(_mcount)
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 8edc2359c41..260089dccfb 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -68,7 +68,7 @@ EXPORT_SYMBOL(single_step_exception);
EXPORT_SYMBOL(sys_sigreturn);
#endif
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
EXPORT_SYMBOL(_mcount);
#endif
diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index be60d64be7a..50f16939255 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -1,6 +1,6 @@
CFLAGS_bootx_init.o += -fPIC
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code
CFLAGS_REMOVE_bootx_init.o = -pg -mno-sched-epilog
endif
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 035b15af90d..824f6122e1a 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -12,7 +12,7 @@ config SPARC64
bool
default y
select HAVE_DYNAMIC_FTRACE
- select HAVE_FTRACE
+ select HAVE_FUNCTION_TRACER
select HAVE_IDE
select HAVE_LMB
select HAVE_ARCH_KGDB
diff --git a/arch/sparc64/Kconfig.debug b/arch/sparc64/Kconfig.debug
index d6d32d178fc..c40515c0669 100644
--- a/arch/sparc64/Kconfig.debug
+++ b/arch/sparc64/Kconfig.debug
@@ -33,7 +33,7 @@ config DEBUG_PAGEALLOC
config MCOUNT
bool
- depends on STACK_DEBUG || FTRACE
+ depends on STACK_DEBUG || FUNCTION_TRACER
default y
config FRAME_POINTER
diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S
index fad90ddb3a2..7ce9c65f359 100644
--- a/arch/sparc64/lib/mcount.S
+++ b/arch/sparc64/lib/mcount.S
@@ -93,7 +93,7 @@ mcount:
nop
1:
#endif
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
mov %o7, %o0
.globl mcount_call
@@ -119,7 +119,7 @@ mcount_call:
.size _mcount,.-_mcount
.size mcount,.-mcount
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
.globl ftrace_stub
.type ftrace_stub,#function
ftrace_stub:
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5b9b12321ad..100325c8605 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -28,7 +28,7 @@ config X86
select HAVE_KRETPROBES
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
- select HAVE_FTRACE
+ select HAVE_FUNCTION_TRACER
select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
select HAVE_ARCH_KGDB if !X86_VOYAGER
select HAVE_ARCH_TRACEHOOK
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index d7e5a58ee22..f1283fe6072 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := head_$(BITS).o head$(BITS).o head.o init_task.o vmlinu
CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
# Do not profile debug and lowlevel utilities
CFLAGS_REMOVE_tsc.o = -pg
CFLAGS_REMOVE_rtc.o = -pg
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index c356423a602..008cc17521c 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1149,7 +1149,7 @@ ENDPROC(xen_failsafe_callback)
#endif /* CONFIG_XEN */
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(mcount)
@@ -1204,7 +1204,7 @@ trace:
jmp ftrace_stub
END(mcount)
#endif /* CONFIG_DYNAMIC_FTRACE */
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
.section .rodata,"a"
#include "syscall_table_32.S"
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 09e7145484c..b86f332c96a 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -61,7 +61,7 @@
.code64
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(mcount)
retq
@@ -138,7 +138,7 @@ trace:
jmp ftrace_stub
END(mcount)
#endif /* CONFIG_DYNAMIC_FTRACE */
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
#ifndef CONFIG_PREEMPT
#define retint_kernel retint_restore_args
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index d073d981a73..8821ceabf51 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -62,6 +62,7 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
unsigned char *new_code)
{
unsigned char replaced[MCOUNT_INSN_SIZE];
+ int ret;
/*
* Note: Due to modules and __init, code can
@@ -77,8 +78,9 @@ ftrace_modify_code(unsigned long ip, unsigned char *old_code,
if (memcmp(replaced, old_code, MCOUNT_INSN_SIZE) != 0)
return 2;
- WARN_ON_ONCE(__copy_to_user_inatomic((char __user *)ip, new_code,
- MCOUNT_INSN_SIZE));
+ ret = __copy_to_user_inatomic((char __user *)ip, new_code,
+ MCOUNT_INSN_SIZE);
+ WARN_ON_ONCE(ret);
sync_core();
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index dd7ebee446a..43cec6bdda6 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -5,7 +5,7 @@
#include <asm/desc.h>
#include <asm/ftrace.h>
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
/* mcount is defined in assembly */
EXPORT_SYMBOL(mcount);
#endif
diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
index b545f371b5f..695e426aa35 100644
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -12,7 +12,7 @@
#include <asm/desc.h>
#include <asm/ftrace.h>
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
/* mcount is defined in assembly */
EXPORT_SYMBOL(mcount);
#endif
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 313947940a1..6dcefba7836 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -1,4 +1,4 @@
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
# Do not profile debug and lowlevel utilities
CFLAGS_REMOVE_spinlock.o = -pg
CFLAGS_REMOVE_time.o = -pg
diff --git a/include/asm-x86/ftrace.h b/include/asm-x86/ftrace.h
index 1bb6f9bbe1a..233bb9b869c 100644
--- a/include/asm-x86/ftrace.h
+++ b/include/asm-x86/ftrace.h
@@ -1,7 +1,7 @@
#ifndef ASM_X86__FTRACE_H
#define ASM_X86__FTRACE_H
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#define MCOUNT_ADDR ((long)(mcount))
#define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
@@ -19,6 +19,6 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr)
}
#endif
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
#endif /* ASM_X86__FTRACE_H */
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index a3d46151be1..0e952958915 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -8,7 +8,7 @@
#include <linux/types.h>
#include <linux/kallsyms.h>
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
extern int ftrace_enabled;
extern int
@@ -36,12 +36,12 @@ void clear_ftrace_function(void);
extern void ftrace_stub(unsigned long a0, unsigned long a1);
-#else /* !CONFIG_FTRACE */
+#else /* !CONFIG_FUNCTION_TRACER */
# define register_ftrace_function(ops) do { } while (0)
# define unregister_ftrace_function(ops) do { } while (0)
# define clear_ftrace_function(ops) do { } while (0)
static inline void ftrace_kill_atomic(void) { }
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_DYNAMIC_FTRACE
# define FTRACE_HASHBITS 10
@@ -101,7 +101,7 @@ void ftrace_kill_atomic(void);
static inline void tracer_disable(void)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
ftrace_enabled = 0;
#endif
}
@@ -113,7 +113,7 @@ static inline void tracer_disable(void)
*/
static inline int __ftrace_enabled_save(void)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
int saved_ftrace_enabled = ftrace_enabled;
ftrace_enabled = 0;
return saved_ftrace_enabled;
@@ -124,7 +124,7 @@ static inline int __ftrace_enabled_save(void)
static inline void __ftrace_enabled_restore(int enabled)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
ftrace_enabled = enabled;
#endif
}
diff --git a/kernel/Makefile b/kernel/Makefile
index 305f11dbef2..9a3ec66a9d8 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -13,7 +13,7 @@ obj-y = sched.o fork.o exec_domain.o panic.o printk.o \
CFLAGS_REMOVE_sched.o = -mno-spe
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
# Do not trace debug files and internal ftrace files
CFLAGS_REMOVE_lockdep.o = -pg
CFLAGS_REMOVE_lockdep_proc.o = -pg
@@ -88,7 +88,7 @@ obj-$(CONFIG_MARKERS) += marker.o
obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
obj-$(CONFIG_LATENCYTOP) += latencytop.o
obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o
-obj-$(CONFIG_FTRACE) += trace/
+obj-$(CONFIG_FUNCTION_TRACER) += trace/
obj-$(CONFIG_TRACING) += trace/
obj-$(CONFIG_SMP) += sched_cpupri.o
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b3cc73931d1..edb1075f80d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -464,7 +464,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
{
.ctl_name = CTL_UNNUMBERED,
.procname = "ftrace_enabled",
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 1cb3e1f616a..3533c583df4 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -1,11 +1,12 @@
#
-# Architectures that offer an FTRACE implementation should select HAVE_FTRACE:
+# Architectures that offer an FUNCTION_TRACER implementation should
+# select HAVE_FUNCTION_TRACER:
#
config NOP_TRACER
bool
-config HAVE_FTRACE
+config HAVE_FUNCTION_TRACER
bool
select NOP_TRACER
@@ -28,9 +29,9 @@ config TRACING
select STACKTRACE
select TRACEPOINTS
-config FTRACE
+config FUNCTION_TRACER
bool "Kernel Function Tracer"
- depends on HAVE_FTRACE
+ depends on HAVE_FUNCTION_TRACER
depends on DEBUG_KERNEL
select FRAME_POINTER
select TRACING
@@ -49,7 +50,6 @@ config IRQSOFF_TRACER
default n
depends on TRACE_IRQFLAGS_SUPPORT
depends on GENERIC_TIME
- depends on HAVE_FTRACE
depends on DEBUG_KERNEL
select TRACE_IRQFLAGS
select TRACING
@@ -73,7 +73,6 @@ config PREEMPT_TRACER
default n
depends on GENERIC_TIME
depends on PREEMPT
- depends on HAVE_FTRACE
depends on DEBUG_KERNEL
select TRACING
select TRACER_MAX_TRACE
@@ -101,7 +100,6 @@ config SYSPROF_TRACER
config SCHED_TRACER
bool "Scheduling Latency Tracer"
- depends on HAVE_FTRACE
depends on DEBUG_KERNEL
select TRACING
select CONTEXT_SWITCH_TRACER
@@ -112,7 +110,6 @@ config SCHED_TRACER
config CONTEXT_SWITCH_TRACER
bool "Trace process context switches"
- depends on HAVE_FTRACE
depends on DEBUG_KERNEL
select TRACING
select MARKERS
@@ -122,7 +119,6 @@ config CONTEXT_SWITCH_TRACER
config BOOT_TRACER
bool "Trace boot initcalls"
- depends on HAVE_FTRACE
depends on DEBUG_KERNEL
select TRACING
help
@@ -141,9 +137,9 @@ config BOOT_TRACER
config STACK_TRACER
bool "Trace max stack"
- depends on HAVE_FTRACE
+ depends on HAVE_FUNCTION_TRACER
depends on DEBUG_KERNEL
- select FTRACE
+ select FUNCTION_TRACER
select STACKTRACE
help
This special tracer records the maximum stack footprint of the
@@ -160,7 +156,7 @@ config STACK_TRACER
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"
- depends on FTRACE
+ depends on FUNCTION_TRACER
depends on HAVE_DYNAMIC_FTRACE
depends on DEBUG_KERNEL
default y
@@ -170,7 +166,7 @@ config DYNAMIC_FTRACE
with a No-Op instruction) as they are called. A table is
created to dynamically enable them again.
- This way a CONFIG_FTRACE kernel is slightly larger, but otherwise
+ This way a CONFIG_FUNCTION_TRACER kernel is slightly larger, but otherwise
has native performance as long as no tracing is active.
The changes to the code are done by a kernel thread that
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index a85dfba88ba..c8228b1a49e 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -1,7 +1,7 @@
# Do not instrument the tracer itself:
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
@@ -10,13 +10,13 @@ CFLAGS_trace_selftest_dynamic.o = -pg
obj-y += trace_selftest_dynamic.o
endif
-obj-$(CONFIG_FTRACE) += libftrace.o
+obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o
obj-$(CONFIG_RING_BUFFER) += ring_buffer.o
obj-$(CONFIG_TRACING) += trace.o
obj-$(CONFIG_CONTEXT_SWITCH_TRACER) += trace_sched_switch.o
obj-$(CONFIG_SYSPROF_TRACER) += trace_sysprof.o
-obj-$(CONFIG_FTRACE) += trace_functions.o
+obj-$(CONFIG_FUNCTION_TRACER) += trace_functions.o
obj-$(CONFIG_IRQSOFF_TRACER) += trace_irqsoff.o
obj-$(CONFIG_PREEMPT_TRACER) += trace_irqsoff.o
obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 4dda4f60a2a..1f54a94189f 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -164,10 +164,14 @@ static DEFINE_SPINLOCK(ftrace_hash_lock);
#define ftrace_hash_lock(flags) spin_lock_irqsave(&ftrace_hash_lock, flags)
#define ftrace_hash_unlock(flags) \
spin_unlock_irqrestore(&ftrace_hash_lock, flags)
+static void ftrace_release_hash(unsigned long start, unsigned long end);
#else
/* This is protected via the ftrace_lock with MCOUNT_RECORD. */
#define ftrace_hash_lock(flags) do { (void)(flags); } while (0)
#define ftrace_hash_unlock(flags) do { } while(0)
+static inline void ftrace_release_hash(unsigned long start, unsigned long end)
+{
+}
#endif
/*
@@ -347,6 +351,7 @@ void ftrace_release(void *start, unsigned long size)
}
spin_unlock(&ftrace_lock);
+ ftrace_release_hash(s, e);
}
static struct dyn_ftrace *ftrace_alloc_dyn_node(unsigned long ip)
@@ -1659,6 +1664,44 @@ void __init ftrace_init(void)
ftrace_disabled = 1;
}
#else /* CONFIG_FTRACE_MCOUNT_RECORD */
+
+static void ftrace_release_hash(unsigned long start, unsigned long end)
+{
+ struct dyn_ftrace *rec;
+ struct hlist_node *t, *n;
+ struct hlist_head *head, temp_list;
+ unsigned long flags;
+ int i, cpu;
+
+ preempt_disable_notrace();
+
+ /* disable incase we call something that calls mcount */
+ cpu = raw_smp_processor_id();
+ per_cpu(ftrace_shutdown_disable_cpu, cpu)++;
+
+ ftrace_hash_lock(flags);
+
+ for (i = 0; i < FTRACE_HASHSIZE; i++) {
+ INIT_HLIST_HEAD(&temp_list);
+ head = &ftrace_hash[i];
+
+ /* all CPUS are stopped, we are safe to modify code */
+ hlist_for_each_entry_safe(rec, t, n, head, node) {
+ if (rec->flags & FTRACE_FL_FREE)
+ continue;
+
+ if ((rec->ip >= start) && (rec->ip < end))
+ ftrace_free_rec(rec);
+ }
+ }
+
+ ftrace_hash_unlock(flags);
+
+ per_cpu(ftrace_shutdown_disable_cpu, cpu)--;
+ preempt_enable_notrace();
+
+}
+
static int ftraced(void *ignore)
{
unsigned long usecs;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d345d649d07..aeb2f2505bc 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -851,7 +851,7 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
preempt_enable_notrace();
}
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
static void
function_trace_call(unsigned long ip, unsigned long parent_ip)
{
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index f1f99572cde..6889ca48f1f 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -335,7 +335,7 @@ void update_max_tr_single(struct trace_array *tr,
extern cycle_t ftrace_now(int cpu);
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
void tracing_start_function_trace(void);
void tracing_stop_function_trace(void);
#else
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index e90eb0c2c56..0f85a64003d 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -64,7 +64,7 @@ static void function_trace_ctrl_update(struct trace_array *tr)
static struct tracer function_trace __read_mostly =
{
- .name = "ftrace",
+ .name = "function",
.init = function_trace_init,
.reset = function_trace_reset,
.ctrl_update = function_trace_ctrl_update,
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index a7db7f040ae..9c74071c10e 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -63,7 +63,7 @@ irq_trace(void)
*/
static __cacheline_aligned_in_smp unsigned long max_sequence;
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
/*
* irqsoff uses its own tracer function to keep the overhead down:
*/
@@ -104,7 +104,7 @@ static struct ftrace_ops trace_ops __read_mostly =
{
.func = irqsoff_tracer_call,
};
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
/*
* Should this new latency be reported/recorded?
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index fe4a252c236..3ae93f16b56 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -31,7 +31,7 @@ static raw_spinlock_t wakeup_lock =
static void __wakeup_reset(struct trace_array *tr);
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
/*
* irqsoff uses its own tracer function to keep the overhead down:
*/
@@ -96,7 +96,7 @@ static struct ftrace_ops trace_ops __read_mostly =
{
.func = wakeup_tracer_call,
};
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
/*
* Should this new latency be reported/recorded?
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 09cf230d7ec..95815d26a04 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -70,7 +70,7 @@ static int trace_test_buffer(struct trace_array *tr, unsigned long *count)
return ret;
}
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -226,7 +226,7 @@ trace_selftest_startup_function(struct tracer *trace, struct trace_array *tr)
return ret;
}
-#endif /* CONFIG_FTRACE */
+#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_IRQSOFF_TRACER
int
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index 74c5d9a3afa..be682b62fe5 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -44,6 +44,10 @@ static inline void check_stack(void)
if (this_size <= max_stack_size)
return;
+ /* we do not handle interrupt stacks yet */
+ if (!object_is_on_stack(&this_size))
+ return;
+
raw_local_irq_save(flags);
__raw_spin_lock(&max_stack_lock);
diff --git a/lib/Makefile b/lib/Makefile
index 16feaab057b..7cb65d85aeb 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -2,7 +2,7 @@
# Makefile for some libs needed in the kernel.
#
-ifdef CONFIG_FTRACE
+ifdef CONFIG_FUNCTION_TRACER
ORIG_CFLAGS := $(KBUILD_CFLAGS)
KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS))
endif