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(parent: 5e8869b) | patch
sched: fix prev_stime calculation
authorIngo Molnar <mingo@elte.hu>
Mon, 26 Nov 2007 20:21:49 +0000 (21:21 +0100)
committerIngo Molnar <mingo@elte.hu>
Mon, 26 Nov 2007 20:21:49 +0000 (21:21 +0100)
commit08e4570a4a393bcc241f78dfc444cb0b07995fc0
treee151f5d5ae0e9cb361e91a08c4d0fb8a7171b8cetree | snapshot
parent5e8869bb699d50be5c0733edfc71cfcd5b43e10acommit | diff
sched: fix prev_stime calculation

Srivatsa Vaddagiri noticed occasionally incorrect CPU usage
values in top and tracked it down to stime going below 0 in
task_stime(). Negative values are possible there due to the
sampled nature of stime/utime.

Fix suggested by Balbir Singh.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com>
fs/proc/array.c diff | blob | history
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