AcoSail/kernel_optimize_test
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arm: Remove signal translation and exec_domain

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As execution domain support is gone we can remove
signal translation from the signal code and remove
exec_domain from thread_info.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2014-07-13 15:24:03 +02:00
parent 973f911f55
commit a4980448ed
4 changed files with 3 additions and 20 deletions
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3
arch/arm/include/asm/thread_info.h
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@ -23,7 +23,6 @@
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
struct task_struct; struct task_struct;
struct exec_domain;
#include <asm/types.h> #include <asm/types.h>
#include <asm/domain.h> #include <asm/domain.h>
@ -53,7 +52,6 @@ struct thread_info {
int preempt_count; /* 0 => preemptable, <0 => bug */ int preempt_count; /* 0 => preemptable, <0 => bug */
mm_segment_t addr_limit; /* address limit */ mm_segment_t addr_limit; /* address limit */
struct task_struct *task; /* main task structure */ struct task_struct *task; /* main task structure */
struct exec_domain *exec_domain; /* execution domain */
__u32 cpu; /* cpu */ __u32 cpu; /* cpu */
__u32 cpu_domain; /* cpu domain */ __u32 cpu_domain; /* cpu domain */
struct cpu_context_save cpu_context; /* cpu context */ struct cpu_context_save cpu_context; /* cpu context */
@ -73,7 +71,6 @@ struct thread_info {
#define INIT_THREAD_INFO(tsk) \ #define INIT_THREAD_INFO(tsk) \
{ \ { \
.task = &tsk, \ .task = &tsk, \
.exec_domain = &default_exec_domain, \
.flags = 0, \ .flags = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \ .preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \ .addr_limit = KERNEL_DS, \

1
arch/arm/kernel/asm-offsets.c
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@ -66,7 +66,6 @@ int main(void)
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit)); DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit));
DEFINE(TI_TASK, offsetof(struct thread_info, task)); DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
DEFINE(TI_CPU_DOMAIN, offsetof(struct thread_info, cpu_domain)); DEFINE(TI_CPU_DOMAIN, offsetof(struct thread_info, cpu_domain));
DEFINE(TI_CPU_SAVE, offsetof(struct thread_info, cpu_context)); DEFINE(TI_CPU_SAVE, offsetof(struct thread_info, cpu_context));

13
arch/arm/kernel/signal.c
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@ -318,17 +318,6 @@ get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize)
return frame; return frame;
} }
/*
* translate the signal
*/
static inline int map_sig(int sig)
{
struct thread_info *thread = current_thread_info();
if (sig < 32 && thread->exec_domain && thread->exec_domain->signal_invmap)
sig = thread->exec_domain->signal_invmap[sig];
return sig;
}
static int static int
setup_return(struct pt_regs *regs, struct ksignal *ksig, setup_return(struct pt_regs *regs, struct ksignal *ksig,
unsigned long __user *rc, void __user *frame) unsigned long __user *rc, void __user *frame)
@ -412,7 +401,7 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
} }
} }
regs->ARM_r0 = map_sig(ksig->sig); regs->ARM_r0 = ksig->sig;
regs->ARM_sp = (unsigned long)frame; regs->ARM_sp = (unsigned long)frame;
regs->ARM_lr = retcode; regs->ARM_lr = retcode;
regs->ARM_pc = handler; regs->ARM_pc = handler;

6
arch/arm/kernel/traps.c
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@ -505,12 +505,10 @@ asmlinkage void bad_mode(struct pt_regs *regs, int reason)
static int bad_syscall(int n, struct pt_regs *regs) static int bad_syscall(int n, struct pt_regs *regs)
{ {
struct thread_info *thread = current_thread_info();
siginfo_t info; siginfo_t info;
if ((current->personality & PER_MASK) != PER_LINUX && if ((current->personality & PER_MASK) != PER_LINUX) {
thread->exec_domain->handler) { send_sig(SIGSEGV, current, 1);
thread->exec_domain->handler(n, regs);
return regs->ARM_r0; return regs->ARM_r0;
} }