From a997af71be912d68b2e1f38cc1f81b1a91b66b74 Mon Sep 17 00:00:00 2001
From: Tomoki Shirasawa <sira@popeye.cc.u-tokyo.ac.jp>
Date: Wed, 17 Feb 2016 12:48:12 +0900
Subject: [PATCH] support tkill refs #664

---
 arch/x86/kernel/include/syscall_list.h |  1 +
 kernel/syscall.c                       | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/arch/x86/kernel/include/syscall_list.h b/arch/x86/kernel/include/syscall_list.h
index 2f955348..6f429df3 100644
--- a/arch/x86/kernel/include/syscall_list.h
+++ b/arch/x86/kernel/include/syscall_list.h
@@ -107,6 +107,7 @@ SYSCALL_HANDLED(158, arch_prctl)
 SYSCALL_HANDLED(160, setrlimit)
 SYSCALL_HANDLED(164, settimeofday)
 SYSCALL_HANDLED(186, gettid)
+SYSCALL_HANDLED(200, tkill)
 SYSCALL_DELEGATED(201, time)
 SYSCALL_HANDLED(202, futex)
 SYSCALL_HANDLED(203, sched_setaffinity)
diff --git a/kernel/syscall.c b/kernel/syscall.c
index 348595c9..41c27e6f 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -2075,6 +2075,24 @@ SYSCALL_DECLARE(tgkill)
 	return do_kill(thread, tgid, tid, sig, &info, 0);
 }
 
+SYSCALL_DECLARE(tkill)
+{
+	int tid = ihk_mc_syscall_arg0(ctx);
+	int sig = ihk_mc_syscall_arg1(ctx);
+	struct thread *thread = cpu_local_var(current);
+	struct siginfo info;
+
+	memset(&info, '\0', sizeof info);
+	info.si_signo = sig;
+	info.si_code = SI_TKILL;
+	info._sifields._kill.si_pid = thread->proc->pid;
+
+	if(tid <= 0)
+		return -EINVAL;
+
+	return do_kill(thread, -1, tid, sig, &info, 0);
+}
+
 int *
 getcred(int *_buf)
 {