changeset 2721:9447b2fb6fcf

7082645: Hotspot doesn't compile on old linuxes after 7060836 Summary: Move syscall ids definitions into os_linux.cpp Reviewed-by: johnc
author iveresov
date Mon, 29 Aug 2011 17:42:39 -0700
parents eeae91c9baba
children 4fe626cbf0bf
files src/os/linux/vm/os_linux.cpp
diffstat 1 files changed, 9 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/src/os/linux/vm/os_linux.cpp	Mon Aug 29 10:13:06 2011 -0700
+++ b/src/os/linux/vm/os_linux.cpp	Mon Aug 29 17:42:39 2011 -0700
@@ -125,10 +125,6 @@
 # include <inttypes.h>
 # include <sys/ioctl.h>
 
-#ifdef AMD64
-#include <asm/vsyscall.h>
-#endif
-
 #define MAX_PATH    (2 * K)
 
 // for timer info max values which include all bits
@@ -2600,8 +2596,17 @@
   int retval = -1;
 
 #if defined(IA32)
+# ifndef SYS_getcpu
+# define SYS_getcpu 318
+# endif
   retval = syscall(SYS_getcpu, &cpu, NULL, NULL);
 #elif defined(AMD64)
+// Unfortunately we have to bring all these macros here from vsyscall.h
+// to be able to compile on old linuxes.
+# define __NR_vgetcpu 2
+# define VSYSCALL_START (-10UL << 20)
+# define VSYSCALL_SIZE 1024
+# define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
   typedef long (*vgetcpu_t)(unsigned int *cpu, unsigned int *node, unsigned long *tcache);
   vgetcpu_t vgetcpu = (vgetcpu_t)VSYSCALL_ADDR(__NR_vgetcpu);
   retval = vgetcpu(&cpu, NULL, NULL);