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| author |   Tim Chen <tim.c.chen@linux.intel.com> | 2016-09-21 12:19:03 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-09-30 10:53:18 +0200 |
| commit | 8f37961cf22304fb286c7604d3a7f6104dcc1283 (patch) | |
| tree | 36c12eb9c7a0266424de4d9aa8d26394c09960ea /include/linux/wait.h | |
| parent | Merge branch 'linus' into sched/core, to pick up fixes (diff) | |
| download | linux-dev-8f37961cf22304fb286c7604d3a7f6104dcc1283.tar.xz linux-dev-8f37961cf22304fb286c7604d3a7f6104dcc1283.zip | |
sched/core, x86/topology: Fix NUMA in package topology bug
Current code can call set_cpu_sibling_map() and invoke sched_set_topology()
more than once (e.g. on CPU hot plug). When this happens after
sched_init_smp() has been called, we lose the NUMA topology extension to
sched_domain_topology in sched_init_numa(). This results in incorrect
topology when the sched domain is rebuilt.
This patch fixes the bug and issues warning if we call sched_set_topology()
after sched_init_smp().
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@suse.de
Cc: jolsa@redhat.com
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/1474485552-141429-2-git-send-email-srinivas.pandruvada@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/wait.h')
0 files changed, 0 insertions, 0 deletions