s390/syscalls: wire up kcmp system call

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 6756e78f48082f1644f7a0d73cdeecaa5d193da5..21dffcbd32869128ed2c3561be12360e882b5cd2 100644 (file)
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -277,7 +277,9 @@
 #define __NR_setns             339
 #define __NR_process_vm_readv  340
 #define __NR_process_vm_writev 341
-#define NR_syscalls 342
+/* Number 342 is reserved for sys_s390_runtime_instr */
+#define __NR_kcmp              343
+#define NR_syscalls 344
 
 /* 
  * There are some system calls that are not present on 64 bit, some

diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 2d82cfcbce5b8cae9127aa115902fa6a2f3b5123..1b0323477ddf90217d464fefcdac0d3e1b3df448 100644 (file)
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1646,3 +1646,11 @@ ENTRY(compat_sys_process_vm_writev_wrapper)
        llgf    %r0,164(%r15)           # unsigned long
        stg     %r0,160(%r15)
        jg      compat_sys_process_vm_writev
+
+ENTRY(sys_kcmp_wrapper)
+       lgfr    %r2,%r2                 # pid_t
+       lgfr    %r3,%r3                 # pid_t
+       lgfr    %r4,%r4                 # int
+       llgfr   %r5,%r5                 # unsigned long
+       llgfr   %r6,%r6                 # unsigned long
+       jg      sys_kcmp

diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index bcab2f04ba581f7648426a1790485d53626d8fda..a91b4061f7e179bbb4205941ed5e9e0a32dd2b8d 100644 (file)
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -350,3 +350,5 @@ SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
 SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
 SYSCALL(sys_process_vm_readv,sys_process_vm_readv,compat_sys_process_vm_readv_wrapper) /* 340 */
 SYSCALL(sys_process_vm_writev,sys_process_vm_writev,compat_sys_process_vm_writev_wrapper)
+NI_SYSCALL                                             /* 342 sys_s390_runtime_instr */
+SYSCALL(sys_kcmp,sys_kcmp,sys_kcmp_wrapper)