Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [PATCH 1/3] x86: Remove unnecessary compile flag tweaks for vsyscall code | Date | Wed, 10 Aug 2011 11:15:30 -0400 |
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As of commit 98d0ac38ca7b1b7a552c9a2359174ff84decb600 Author: Andy Lutomirski <luto@mit.edu> Date: Thu Jul 14 06:47:22 2011 -0400
x86-64: Move vread_tsc and vread_hpet into the vDSO
user code no longer directly calls into code in arch/x86/kernel/, so we don't need compile flag hacks to make it safe. All vdso code is in the vdso directory now.
Signed-off-by: Andy Lutomirski <luto@mit.edu> --- arch/x86/kernel/Makefile | 13 ------------- arch/x86/kernel/vsyscall_64.c | 3 --- 2 files changed, 0 insertions(+), 16 deletions(-)
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 0410557..82f2912 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -17,19 +17,6 @@ CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_early_printk.o = -pg endif -# -# vsyscalls (which work on the user stack) should have -# no stack-protector checks: -# -nostackp := $(call cc-option, -fno-stack-protector) -CFLAGS_vsyscall_64.o := $(PROFILING) -g0 $(nostackp) -CFLAGS_hpet.o := $(nostackp) -CFLAGS_paravirt.o := $(nostackp) -GCOV_PROFILE_vsyscall_64.o := n -GCOV_PROFILE_hpet.o := n -GCOV_PROFILE_tsc.o := n -GCOV_PROFILE_paravirt.o := n - obj-y := process_$(BITS).o signal.o entry_$(BITS).o obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o obj-y += time.o ioport.o ldt.o dumpstack.o diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c index 93a0d46..bf8e9ff 100644 --- a/arch/x86/kernel/vsyscall_64.c +++ b/arch/x86/kernel/vsyscall_64.c @@ -18,9 +18,6 @@ * use the vDSO. */ -/* Disable profiling for userspace code: */ -#define DISABLE_BRANCH_PROFILING - #include <linux/time.h> #include <linux/init.h> #include <linux/kernel.h> -- 1.7.6
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