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interrupt syscall of signal recieved process

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This commit is contained in:
Tomoki Shirasawa
2014-06-11 21:06:52 +09:00
parent 19fc50ee05
commit bbb7f77706
2 changed files with 8 additions and 3 deletions
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4
arch/x86/kernel/syscall.c
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@@ -143,7 +143,7 @@ SYSCALL_DECLARE(rt_sigreturn)
extern struct cpu_local_var *clv;
extern unsigned long do_kill(int pid, int tid, int sig);
extern void interrupt_syscall(int all);
extern void interrupt_syscall(int all, int pid);
extern int num_processors;
void
@@ -370,7 +370,7 @@ do_kill(int pid, int tid, int sig)
if(proc != tproc){
ihk_mc_interrupt_cpu(get_x86_cpu_local_variable(tproc->cpu_id)->apic_id, 0xd0);
}
interrupt_syscall(1);
interrupt_syscall(1, tproc->pid);
return rc;
}

7
kernel/syscall.c
View File

@@ -127,6 +127,8 @@ static void send_syscall(struct syscall_request *req, int cpu, int pid)
/* XXX: is this really going to work if multiple processes
* exit/receive signals at the same time?? */
cpu = num_processors;
if(req->number == __NR_kill)
pid = req->args[2];
}
else{
scp = &get_cpu_local_var(cpu)->scp;
@@ -234,6 +236,7 @@ long syscall_generic_forwarding(int n, ihk_mc_user_context_t *ctx)
SYSCALL_FOOTER;
}
#if 0
void sigchld_parent(struct process *parent, int status)
{
struct process *proc = cpu_local_var(current);
@@ -275,6 +278,7 @@ void sigchld_parent(struct process *parent, int status)
ihk_mc_spinlock_unlock(&parent->sigpendinglock, irqstate);
}
#endif
/*
* From glibc: INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL);
@@ -438,13 +442,14 @@ terminate(int rc, int sig, ihk_mc_user_context_t *ctx)
}
void
interrupt_syscall(int all)
interrupt_syscall(int all, int pid)
{
ihk_mc_user_context_t ctx;
long lerror;
ihk_mc_syscall_arg0(&ctx) = all? -1: ihk_mc_get_processor_id();
ihk_mc_syscall_arg1(&ctx) = 0;
ihk_mc_syscall_arg2(&ctx) = pid;
lerror = syscall_generic_forwarding(__NR_kill, &ctx);
if (lerror) {