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perf, x86: Add INSTRUCTION_DECODER config flag 

The PEBS+LBR decoding magic needs the insn_get_length() infrastructure
to be able to decode x86 instruction length.

So split it out of KPROBES dependency and make it enabled when either
KPROBES or PERF_EVENTS is enabled.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-06-06 13:58:12 +02:00
parent 63fb3f9b23
commit ba7e4d13fc
2 changed files with 4 additions and 1 deletions
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3
arch/x86/Kconfig
View File

@ -58,6 +58,9 @@ config X86
select HAVE_ARCH_KMEMCHECK
select HAVE_USER_RETURN_NOTIFIER
config INSTRUCTION_DECODER
def_bool (KPROBES || PERF_EVENTS)
config OUTPUT_FORMAT
string
default "elf32-i386" if X86_32

2
arch/x86/lib/Makefile
View File

@ -20,7 +20,7 @@ lib-y := delay.o
lib-y += thunk_$(BITS).o
lib-y += usercopy_$(BITS).o getuser.o putuser.o
lib-y += memcpy_$(BITS).o
lib-$(CONFIG_KPROBES) += insn.o inat.o
lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o
obj-y += msr.o msr-reg.o msr-reg-export.o