[IA64] Wire up kcmp syscall

systemd > 218 fails to compile on ia64 with:

     error: ‘__NR_kcmp’ undeclared [1].

I've been told that this is because the kcmp syscall hasn't been wired up
for the ia64 arch [2].

The proposed patch thus wire up the kcmp syscall for the ia64 arch.

[1] https://bugs.gentoo.org/show_bug.cgi?id=560492
[2] https://bugs.gentoo.org/show_bug.cgi?id=560492#c17

Signed-off-by: Émeric MASCHINO <emeric.maschino@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

3 files changed, 3 insertions, 1 deletions

diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
index 99c96a5e6016..db73390568c8 100644
--- a/arch/ia64/include/asm/unistd.h
+++ b/arch/ia64/include/asm/unistd.h
@@ -11,7 +11,7 @@
 
 
 
-#define NR_syscalls                     321 /* length of syscall table */
+#define NR_syscalls                     322 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about
diff --git a/arch/ia64/include/uapi/asm/unistd.h b/arch/ia64/include/uapi/asm/unistd.h
index 98e94e19a5a0..9038726e7d26 100644
--- a/arch/ia64/include/uapi/asm/unistd.h
+++ b/arch/ia64/include/uapi/asm/unistd.h
@@ -334,5 +334,6 @@
 #define __NR_execveat                   1342
 #define __NR_userfaultfd                1343
 #define __NR_membarrier                 1344
+#define __NR_kcmp                       1345
 
 #endif /* _UAPI_ASM_IA64_UNISTD_H */
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 37cc7a65cd3e..dcd97f84d065 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1770,5 +1770,6 @@ sys_call_table:
         data8 sys_execveat
         data8 sys_userfaultfd
         data8 sys_membarrier
+        data8 sys_kcmp                          // 1345
 
         .org sys_call_table + 8*NR_syscalls     // guard against failures to increase NR_syscalls