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| author | Michal Nazarewicz | 2013-11-10 20:42:01 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2013-11-13 13:33:55 +0100 |
| commit | 85b088e934b9943322bfe37077289ae60f1b3414 (patch) | |
| tree | 2ad7a5376ecf31e10604794f98c8e8c63e42aeca /arch/x86/platform/Makefile | |
| parent | sched: Optimize task_sched_runtime() (diff) | |
| download | kernel-qcow2-linux-85b088e934b9943322bfe37077289ae60f1b3414.tar.gz kernel-qcow2-linux-85b088e934b9943322bfe37077289ae60f1b3414.tar.xz kernel-qcow2-linux-85b088e934b9943322bfe37077289ae60f1b3414.zip | |
sched/fair: Avoid integer overflow
sa->runnable_avg_sum is of type u32 but after shifting it by NICE_0_SHIFT
bits it is promoted to u64. This of course makes no sense, since the
result will never be more then 32-bit long. Casting sa->runnable_avg_sum
to u64 before it is shifted, fixes this problem.
Reviewed-by: Ben Segall <bsegall@google.com>
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1384112521-25177-1-git-send-email-mpn@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/platform/Makefile')
0 files changed, 0 insertions, 0 deletions