https://github.com/torvalds/linux
Revision 74030603dfd9f76c0f279f19f1dd1ee3028fee7a authored by WANG Cong on 13 June 2017, 20:36:24 UTC, committed by David S. Miller on 14 June 2017, 18:39:19 UTC
Laura reported a sleep-in-atomic kernel warning inside tcf_act_police_init() which calls gen_replace_estimator() with spinlock protection. It is not necessary in this case, we already have RTNL lock here so it is enough to protect concurrent writers. For the reader, i.e. tcf_act_police(), it needs to make decision based on this rate estimator, in the worst case we drop more/less packets than necessary while changing the rate in parallel, it is still acceptable. Reported-by: Laura Abbott <labbott@redhat.com> Reported-by: Nick Huber <nicholashuber@gmail.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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History 
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Tip revision: 74030603dfd9f76c0f279f19f1dd1ee3028fee7a authored by WANG Cong on 13 June 2017, 20:36:24 UTC
net_sched: move tcf_lock down after gen_replace_estimator()
net_sched: move tcf_lock down after gen_replace_estimator()
Tip revision: 7403060
| File | Mode | Size |
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| arch | ||
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| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.3 KB |
| .mailmap | -rw-r--r-- | 8.1 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 96.2 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 397.7 KB |
| Makefile | -rw-r--r-- | 58.6 KB |
| README | -rw-r--r-- | 722 bytes |
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