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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-12-15 14:56:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 16:13:41 -0800 |
| commit | ca4a557300dd9e22aea5a8e86eb1cfb2b2ad99a5 (patch) | |
| tree | 34a6f5fd38be679e9dab2b2dd51da5351661a5b9 /lib/cpu_rmap.c | |
| parent | b44d4773ae952dff1f04032138e566810b77115d (diff) | |
fix cputime overflow in uptime_proc_show
commit c3e0ef9a298e028a82ada28101ccd5cf64d209ee upstream.
For 32-bit architectures using standard jiffies the idletime calculation
in uptime_proc_show will quickly overflow. It takes (2^32 / HZ) seconds
of idle-time, or e.g. 12.45 days with no load on a quad-core with HZ=1000.
Switch to 64-bit calculations.
Cc: Michael Abbott <michael.abbott@diamond.ac.uk>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/cpu_rmap.c')
0 files changed, 0 insertions, 0 deletions