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tracing/stack-tracer: introduce CONFIG_USER_STACKTRACE_SUPPORT

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Impact: cleanup

User stack tracing is just implemented for x86, but it is not x86 specific.

Introduce a generic config flag, that is currently enabled only for x86.
When other arches implement it, they will have to
SELECT USER_STACKTRACE_SUPPORT.

Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Török Edwin 2008-11-23 12:39:08 +02:00 committed by Ingo Molnar
parent cffa10aecb
commit 8d26487fd4
3 changed files with 5 additions and 1 deletions
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1
arch/x86/Kconfig
View File

@ -36,6 +36,7 @@ config X86
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_DMA_COHERENT if X86_32
select HAVE_EFFICIENT_UNALIGNED_ACCESS
select USER_STACKTRACE_SUPPORT
config ARCH_DEFCONFIG
string

2
include/linux/stacktrace.h
View File

@ -16,7 +16,7 @@ extern void save_stack_trace_tsk(struct task_struct *tsk,
extern void print_stack_trace(struct stack_trace *trace, int spaces);
#ifdef CONFIG_X86
#ifdef CONFIG_USER_STACKTRACE_SUPPORT
extern void save_stack_trace_user(struct stack_trace *trace);
#else
# define save_stack_trace_user(trace) do { } while (0)

3
kernel/trace/Kconfig
View File

@ -3,6 +3,9 @@
# select HAVE_FUNCTION_TRACER:
#
config USER_STACKTRACE_SUPPORT
bool
config NOP_TRACER
bool