diff options
| author | Eric Dumazet <edumazet@google.com> | 2018-02-23 08:12:42 -0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2018-02-23 08:52:34 -0800 |
| commit | accd4f36a7d11c2d54544007eb65e10604dcf2f5 (patch) | |
| tree | 49498cc42444c9e2295a895d518cee0597513806 /drivers/pcmcia | |
| parent | 554fef1c39ee148623a496e04569dabb11463406 (diff) | |
percpu: add a schedule point in pcpu_balance_workfn()
When a large BPF percpu map is destroyed, I have seen
pcpu_balance_workfn() holding cpu for hundreds of milliseconds.
On KASAN config and 112 hyperthreads, average time to destroy a chunk
is ~4 ms.
[ 2489.841376] destroy chunk 1 in 4148689 ns
...
[ 2490.093428] destroy chunk 32 in 4072718 ns
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/pcmcia')
0 files changed, 0 insertions, 0 deletions