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| author | Peter Zijlstra <[email protected]> | 2018-01-22 21:53:28 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2018-01-24 09:03:44 +0000 |
| commit | ce48c146495a1a50e48cdbfbfaba3e708be7c07c (patch) | |
| tree | 6aabd7d32c16454175afdb2a20352056d9beb71a /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c | |
| parent | Merge tag 'pci-v4.15-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | kernel-ce48c146495a1a50e48cdbfbfaba3e708be7c07c.tar.gz kernel-ce48c146495a1a50e48cdbfbfaba3e708be7c07c.zip | |
sched/core: Fix cpu.max vs. cpuhotplug deadlock
Tejun reported the following cpu-hotplug lock (percpu-rwsem) read recursion:
tg_set_cfs_bandwidth()
get_online_cpus()
cpus_read_lock()
cfs_bandwidth_usage_inc()
static_key_slow_inc()
cpus_read_lock()
Reported-by: Tejun Heo <[email protected]>
Tested-by: Tejun Heo <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/20180122215328.GP3397@worktop
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c')
0 files changed, 0 insertions, 0 deletions