On Wed, 16 Mar 2016, Conrad E. Meyer wrote:
Author: cem
Date: Wed Mar 16 04:22:32 2016
New Revision: 296927
URL: https://svnweb.freebsd.org/changeset/base/296927
Log:
fail(9): Upstreaming some fail point enhancements
This is several year's worth of fail point upgrades done at EMC Isilon. They
are interdependent enough that it makes sense to put a single diff up for them.
Primarily, we added:
- Changing all mainline execution paths to be lockless, which lets us use fail
points in more sleep-sensitive areas, and allows more parallel execution
- A number of additional commands, including 'pause' that lets us do some
interesting deterministic repros of race conditions
- The ability to dump the stacks of all threads sleeping on a fail point
- A number of other API changes to allow marking up the fail point's context in
the code, and firing callbacks before and after execution
- A man page update
Submitted by: Matthew Bryan <matthew.br...@isilon.com>
Reviewed by: cem (earlier version), jhb, kib, pho
With feedback from: bdrewery
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D5427
Modified:
head/share/man/man9/fail.9
head/sys/kern/kern_fail.c
head/sys/kern/subr_sleepqueue.c
head/sys/sys/fail.h
head/sys/sys/sleepqueue.h
This seems to have broken a few kernel configs (just one example);
linking kernel.full
subr_sleepqueue.o: In function `sleepq_sbuf_print_stacks':
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x448): undefined
reference to `stack_create'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x448): relocation
truncated to fit: R_MIPS_26 against `stack_create'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x504): undefined
reference to `stack_save_td'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x504): relocation
truncated to fit: R_MIPS_26 against `stack_save_td'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x598): undefined
reference to `stack_sbuf_print'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x598): relocation
truncated to fit: R_MIPS_26 against `stack_sbuf_print'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x5f0): undefined
reference to `stack_destroy'
/scratch/tmp/bz/head.svn/sys/kern/subr_sleepqueue.c:(.text+0x5f0): relocation
truncated to fit: R_MIPS_26 against `stack_destroy'
--- kernel.full ---
*** [kernel.full] Error code 1
bmake[5]: stopped in
/storage/head/obj/mips.mipsn32/scratch/tmp/bz/head.svn/sys/XLPN32
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