As part of the y2038 effort, convert sysinfo's uptime calculation
to use the timespec64 based accessor.

Uptime isn't likely to ever exceed a s32, so this doesn't actually
bring much in the way of change, but it is done for consistency
sake as we deprecate 32bit internal interfaces.

Cc: Arnd Bergmann <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Cyrill Gorcunov <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Alex Thorlton <[email protected]>
Cc: "vishnu.ps" <[email protected]>
Signed-off-by: John Stultz <[email protected]>
---
 kernel/sys.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index a03d9cd..6d2d700 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2260,12 +2260,16 @@ static int do_sysinfo(struct sysinfo *info)
 {
        unsigned long mem_total, sav_total;
        unsigned int mem_unit, bitcount;
-       struct timespec tp;
+       struct timespec64 tp;
 
        memset(info, 0, sizeof(struct sysinfo));
 
-       get_monotonic_boottime(&tp);
-       info->uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0);
+       get_monotonic_boottime64(&tp);
+       /*
+        * y2038: uptime is unlikely to ever grow beyond an s32
+        * so this cast to a long shouldn't be an issue.
+        */
+       info->uptime = (long)tp.tv_sec + (tp.tv_nsec ? 1 : 0);
 
        get_avenrun(info->loads, 0, SI_LOAD_SHIFT - FSHIFT);
 
-- 
1.9.1

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