uml: use *SEC_PER_*SEC constants

There are various uses of powers of 1000, plus the odd BILLION constant in the
time code.  However, there are perfectly good definitions of *SEC_PER_*SEC in
linux/time.h which can be used instaed.

These are replaced directly in kernel code.  Userspace code imports those
constants as UM_*SEC_PER_*SEC and uses these.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 5 deletions

diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 9936531a2620..8548f126d628 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -294,8 +294,8 @@ void userspace(struct uml_pt_regs *regs)
 
         if (getitimer(ITIMER_VIRTUAL, &timer))
                 printk("Failed to get itimer, errno = %d\n", errno);
-        nsecs = timer.it_value.tv_sec * BILLION +
-                timer.it_value.tv_usec * 1000;
+        nsecs = timer.it_value.tv_sec * UM_NSEC_PER_SEC +
+                timer.it_value.tv_usec * UM_NSEC_PER_USEC;
         nsecs += os_nsecs();
 
         while (1) {
@@ -347,8 +347,10 @@ void userspace(struct uml_pt_regs *regs)
                                 block_signals();
                                 (*sig_info[sig])(sig, regs);
                                 unblock_signals();
-                                nsecs = timer.it_value.tv_sec * BILLION +
-                                        timer.it_value.tv_usec * 1000;
+                                nsecs = timer.it_value.tv_sec *
+                                        UM_NSEC_PER_SEC +
+                                        timer.it_value.tv_usec *
+                                        UM_NSEC_PER_USEC;
                                 nsecs += os_nsecs();
                                 break;
                         case SIGIO:
@@ -395,7 +397,7 @@ __initcall(init_thread_regs);
 
 int copy_context_skas0(unsigned long new_stack, int pid)
 {
-        struct timeval tv = { .tv_sec = 0, .tv_usec = 1000000 / UM_HZ };
+        struct timeval tv = { .tv_sec = 0, .tv_usec = UM_USEC_PER_SEC / UM_HZ };
         int err;
         unsigned long current_stack = current_stub_stack();
         struct stub_data *data = (struct stub_data *) current_stack;