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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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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