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x86/unwind: Rename unwinder config options to 'CONFIG_UNWINDER_*'

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Rename the unwinder config options from:

  CONFIG_ORC_UNWINDER
  CONFIG_FRAME_POINTER_UNWINDER
  CONFIG_GUESS_UNWINDER

to:

  CONFIG_UNWINDER_ORC
  CONFIG_UNWINDER_FRAME_POINTER
  CONFIG_UNWINDER_GUESS

... in order to give them a more logical config namespace.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/73972fc7e2762e91912c6b9584582703d6f1b8cc.1507924831.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Josh Poimboeuf 2017-10-13 15:02:00 -05:00 committed by Ingo Molnar
parent 6edcf57233
commit 11af847446
12 changed files with 23 additions and 23 deletions
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2
Documentation/x86/orc-unwinder.txt
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@ -4,7 +4,7 @@ ORC unwinder
Overview
--------
The kernel CONFIG_ORC_UNWINDER option enables the ORC unwinder, which is
The kernel CONFIG_UNWINDER_ORC option enables the ORC unwinder, which is
similar in concept to a DWARF unwinder. The difference is that the
format of the ORC data is much simpler than DWARF, which in turn allows
the ORC unwinder to be much simpler and faster.

4
Makefile
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@ -933,8 +933,8 @@ ifdef CONFIG_STACK_VALIDATION
ifeq ($(has_libelf),1)
objtool_target := tools/objtool FORCE
else
ifdef CONFIG_ORC_UNWINDER
$(error "Cannot generate ORC metadata for CONFIG_ORC_UNWINDER=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
ifdef CONFIG_UNWINDER_ORC
$(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
else
$(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel")
endif

2
arch/x86/Kconfig
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@ -170,7 +170,7 @@ config X86
select HAVE_PERF_USER_STACK_DUMP
select HAVE_RCU_TABLE_FREE
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RELIABLE_STACKTRACE if X86_64 && FRAME_POINTER_UNWINDER && STACK_VALIDATION
select HAVE_RELIABLE_STACKTRACE if X86_64 && UNWINDER_FRAME_POINTER && STACK_VALIDATION
select HAVE_STACK_VALIDATION if X86_64
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_UNSTABLE_SCHED_CLOCK

10
arch/x86/Kconfig.debug
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@ -358,13 +358,13 @@ config PUNIT_ATOM_DEBUG
choice
prompt "Choose kernel unwinder"
default FRAME_POINTER_UNWINDER
default UNWINDER_FRAME_POINTER
---help---
This determines which method will be used for unwinding kernel stack
traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
livepatch, lockdep, and more.
config FRAME_POINTER_UNWINDER
config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
select FRAME_POINTER
---help---
@ -379,7 +379,7 @@ config FRAME_POINTER_UNWINDER
consistency model, as this is currently the only way to get a
reliable stack trace (CONFIG_HAVE_RELIABLE_STACKTRACE).
config ORC_UNWINDER
config UNWINDER_ORC
bool "ORC unwinder"
depends on X86_64
select STACK_VALIDATION
@ -395,7 +395,7 @@ config ORC_UNWINDER
Enabling this option will increase the kernel's runtime memory usage
by roughly 2-4MB, depending on your kernel config.
config GUESS_UNWINDER
config UNWINDER_GUESS
bool "Guess unwinder"
depends on EXPERT
---help---
@ -410,7 +410,7 @@ config GUESS_UNWINDER
endchoice
config FRAME_POINTER
depends on !ORC_UNWINDER && !GUESS_UNWINDER
depends on !UNWINDER_ORC && !UNWINDER_GUESS
bool
endmenu

4
arch/x86/configs/tiny.config
View File

@ -1,5 +1,5 @@
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
CONFIG_GUESS_UNWINDER=y
# CONFIG_FRAME_POINTER_UNWINDER is not set
CONFIG_UNWINDER_GUESS=y
# CONFIG_UNWINDER_FRAME_POINTER is not set

2
arch/x86/configs/x86_64_defconfig
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@ -299,7 +299,7 @@ CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_DEBUG_BOOT_PARAMS=y
CONFIG_OPTIMIZE_INLINING=y
CONFIG_ORC_UNWINDER=y
CONFIG_UNWINDER_ORC=y
CONFIG_SECURITY=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_SELINUX=y

2
arch/x86/include/asm/module.h
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@ -5,7 +5,7 @@
#include <asm/orc_types.h>
struct mod_arch_specific {
#ifdef CONFIG_ORC_UNWINDER
#ifdef CONFIG_UNWINDER_ORC
unsigned int num_orcs;
int *orc_unwind_ip;
struct orc_entry *orc_unwind;

8
arch/x86/include/asm/unwind.h
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@ -12,11 +12,11 @@ struct unwind_state {
struct task_struct *task;
int graph_idx;
bool error;
#if defined(CONFIG_ORC_UNWINDER)
#if defined(CONFIG_UNWINDER_ORC)
bool signal, full_regs;
unsigned long sp, bp, ip;
struct pt_regs *regs;
#elif defined(CONFIG_FRAME_POINTER_UNWINDER)
#elif defined(CONFIG_UNWINDER_FRAME_POINTER)
bool got_irq;
unsigned long *bp, *orig_sp, ip;
struct pt_regs *regs;
@ -50,7 +50,7 @@ void unwind_start(struct unwind_state *state, struct task_struct *task,
__unwind_start(state, task, regs, first_frame);
}
#if defined(CONFIG_ORC_UNWINDER) || defined(CONFIG_FRAME_POINTER_UNWINDER)
#if defined(CONFIG_UNWINDER_ORC) || defined(CONFIG_UNWINDER_FRAME_POINTER)
static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
{
if (unwind_done(state))
@ -65,7 +65,7 @@ static inline struct pt_regs *unwind_get_entry_regs(struct unwind_state *state)
}
#endif
#ifdef CONFIG_ORC_UNWINDER
#ifdef CONFIG_UNWINDER_ORC
void unwind_init(void);
void unwind_module_init(struct module *mod, void *orc_ip, size_t orc_ip_size,
void *orc, size_t orc_size);

6
arch/x86/kernel/Makefile
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@ -127,9 +127,9 @@ obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
obj-$(CONFIG_TRACING) += tracepoint.o
obj-$(CONFIG_SCHED_MC_PRIO) += itmt.o
obj-$(CONFIG_ORC_UNWINDER) += unwind_orc.o
obj-$(CONFIG_FRAME_POINTER_UNWINDER) += unwind_frame.o
obj-$(CONFIG_GUESS_UNWINDER) += unwind_guess.o
obj-$(CONFIG_UNWINDER_ORC) += unwind_orc.o
obj-$(CONFIG_UNWINDER_FRAME_POINTER) += unwind_frame.o
obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o
###
# 64 bit specific files

2
include/asm-generic/vmlinux.lds.h
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@ -687,7 +687,7 @@
#define BUG_TABLE
#endif
#ifdef CONFIG_ORC_UNWINDER
#ifdef CONFIG_UNWINDER_ORC
#define ORC_UNWIND_TABLE \
. = ALIGN(4); \
.orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \

2
lib/Kconfig.debug
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@ -376,7 +376,7 @@ config STACK_VALIDATION
that runtime stack traces are more reliable.
This is also a prerequisite for generation of ORC unwind data, which
is needed for CONFIG_ORC_UNWINDER.
is needed for CONFIG_UNWINDER_ORC.
For more information, see
tools/objtool/Documentation/stack-validation.txt.

2
scripts/Makefile.build
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@ -258,7 +258,7 @@ ifneq ($(SKIP_STACK_VALIDATION),1)
__objtool_obj := $(objtree)/tools/objtool/objtool
objtool_args = $(if $(CONFIG_ORC_UNWINDER),orc generate,check)
objtool_args = $(if $(CONFIG_UNWINDER_ORC),orc generate,check)
ifndef CONFIG_FRAME_POINTER
objtool_args += --no-fp