| commit | 291b863628c74dfa05d3a3ff80137e1e26937517 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 18 Oct 2017 06:31:59 +0000 (17 23:31 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 18 Oct 2017 06:32:56 +0000 (17 23:32 -0700) | ||
| tree | 694e69f2187871537deb33aeed275ac3bb04687a | treesnapshot (tar.gz zip) |
| parent | bc0aa189232f6ec6bb245aef2b91ed26a1a72459 | commitdiff |
kernel - Add lock debugging
* Refactor debug.lock_test_mode to allow dumping of stack backtraces
when lockmgr locks or spinlocks are contested.
* Make some adjustments to the indefinite code (w/ heads up from mjg).
Do not start recording the TSC until we've contested for 15 loops,
and do not record the end time or duration unless we have contested
for more than 15 loops.
* Refactor debug.lock_test_mode to allow dumping of stack backtraces
when lockmgr locks or spinlocks are contested.
* Make some adjustments to the indefinite code (w/ heads up from mjg).
Do not start recording the TSC until we've contested for 15 loops,
and do not record the end time or duration unless we have contested
for more than 15 loops.
| sys/kern/kern_lock.c | diffblobblamehistory | |
| sys/sys/indefinite.h | diffblobblamehistory | |
| sys/sys/indefinite2.h | diffblobblamehistory |