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lockup: add helpers and additional flags in lockup module #187

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lockup: add helpers and additional flags in lockup module #187

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@richl9 richl9 commented Oct 21, 2025

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richl9 added 2 commits October 20, 2025 22:06
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lockup: detect tasks waiting for RCU grace period and possible blockers
873a788 
Orabug: 37899681
Signed-off-by: Richard Li <tianqi.li@oracle.com>
@richl9
lockup: detect tasks waiting for spinlocks and fsnotify with code
674b22c 
refactored

Orabug: 38559536
Signed-off-by: Richard Li <tianqi.li@oracle.com>
@oracle-contributor-agreement oracle-contributor-agreement bot added the OCA Verified All contributors have signed the Oracle Contributor Agreement. label Oct 21, 2025
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biger410 reviewed Oct 21, 2025
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Please add a CRS corelen module and detect whether it was evicted by this fsnotify issue.
Also for the process which is doing fsnotify (__fsnotify_update_child_dentry_flags), please try get the directory it is iterating, and how many dentry under that directory, and what percentage are negative.

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richl9 commented Oct 21, 2025

Please add a CRS corelen module and detect whether it was evicted by this fsnotify issue. Also for the process which is doing fsnotify (__fsnotify_update_child_dentry_flags), please try get the directory it is iterating, and how many dentry under that directory, and what percentage are negative.

Thanks for the comments @biger410 . Yes, crs eviction detector was meant to go to another commit, which I just created:)
(See #188)

@richl9 richl9 mentioned this pull request Oct 21, 2025
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@richl9 richl9 force-pushed the richard/lockup branch 2 times, most recently from 18fb4d4 to f9358d2 Compare December 11, 2025 00:09
@richl9 richl9 changed the title lockup: add helpers in lockup module to detect tasks waiting on spinlocks and fsnotify lockup: add helpers and additional flags in lockup module Dec 11, 2025
@richl9
lockup: add lockup type detection and additional flags
49e4531 
Orabug: 38750252
Signed-off-by: Richard Li <tianqi.li@oracle.com>
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