Konstantin Belousov 2d19b736ed Rewrite subr_sleepqueue.c use of callouts to not depend on the ... specifics of callout KPI. Esp., do not depend on the exact interface of callout_stop(9) return values. The main change is that instead of requiring precise callouts, code maintains absolute time to wake up. Callouts now should ensure that a wake occurs at the requested moment, but we can tolerate both run-away callout, and callout_stop(9) lying about running callout either way. As consequence, it removes the constant source of the bugs where sleepq_check_timeout() causes uninterruptible thread state where the thread is detached from CPU, see e.g. r234952 and r296320. Patch also removes dual meaning of the TDF_TIMEOUT flag, making code (IMO much) simpler to reason about. Tested by: pho Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D7137		2016-07-28 09:09:55 +00:00
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db_access.c
db_access.h
db_break.c
db_break.h
db_capture.c
db_command.c	ddb: for pointers replace 0 with NULL.	2016-04-15 17:27:20 +00:00
db_command.h
db_examine.c	Add a small set of logical operators to DDB command language.	2016-05-16 19:42:38 +00:00
db_expr.c	Add a small set of logical operators to DDB command language.	2016-05-16 19:42:38 +00:00
db_input.c	ddb: de-register	2015-05-23 14:59:27 +00:00
db_lex.c	Add a small set of logical operators to DDB command language.	2016-05-16 19:42:38 +00:00
db_lex.h	Add a small set of logical operators to DDB command language.	2016-05-16 19:42:38 +00:00
db_main.c	Don't return undefined symbols to a DDB symbol lookup.	2015-07-21 23:07:55 +00:00
db_output.c	sys: Make use of our rounddown() macro when sys/param.h is available.	2016-04-30 14:41:18 +00:00
db_output.h
db_print.c	Various changes to the registers displayed in DDB for x86.	2015-07-22 01:09:02 +00:00
db_ps.c	Rewrite subr_sleepqueue.c use of callouts to not depend on the	2016-07-28 09:09:55 +00:00
db_run.c	Add helper to catch single step debug event and distinguish it from bkpt	2015-11-27 19:03:59 +00:00
db_script.c
db_sym.c	ddb: for pointers replace 0 with NULL.	2016-04-15 17:27:20 +00:00
db_sym.h
db_textdump.c	sys/ddb: spelling fixes in comments.	2016-04-29 20:53:39 +00:00
db_thread.c
db_variables.c	Indentation issues.	2016-04-20 16:19:44 +00:00
db_variables.h
db_watch.c	ddb: de-register	2015-05-23 14:59:27 +00:00
db_watch.h
db_write_cmd.c	ddb: de-register	2015-05-23 14:59:27 +00:00
ddb.h