diff options
| author | Raghavendra K T <[email protected]> | 2016-01-16 00:31:23 +0530 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-01-19 08:42:20 +0100 |
| commit | 9c03ee147193645be4c186d3688232fa438c57c7 (patch) | |
| tree | 19a89176131252f5b846687a21a80b6f1961cbf8 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | 10a0c0f0595b20efa127a1816670c64a3d0e4965 (diff) | |
sched: Fix crash in sched_init_numa()
The following PowerPC commit:
c118baf80256 ("arch/powerpc/mm/numa.c: do not allocate bootmem memory for non existing nodes")
avoids allocating bootmem memory for non existent nodes.
But when DEBUG_PER_CPU_MAPS=y is enabled, my powerNV system failed to boot
because in sched_init_numa(), cpumask_or() operation was done on
unallocated nodes.
Fix that by making cpumask_or() operation only on existing nodes.
[ Tested with and w/o DEBUG_PER_CPU_MAPS=y on x86 and PowerPC. ]
Reported-by: Jan Stancek <[email protected]>
Tested-by: Jan Stancek <[email protected]>
Signed-off-by: Raghavendra K T <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Link: http://lkml.kernel.org/r/1452884483-11676-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions