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e8967c8bd9
freebsd-skq/sys
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markj e8967c8bd9 Add stack_save_td_running(), a function to trace the kernel stack of a 
running thread.

It is currently implemented only on amd64 and i386; on these
architectures, it is implemented by raising an NMI on the CPU on which
the target thread is currently running. Unlike stack_save_td(), it may
fail, for example if the thread is running in user mode.

This change also modifies the kern.proc.kstack sysctl to use this function,
so that stacks of running threads are shown in the output of "procstat -kk".
This is handy for debugging threads that are stuck in a busy loop.

Reviewed by:	bdrewery, jhb, kib
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D3256
2015-09-11 03:54:37 +00:00
..
amd64 Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
arm Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
arm64 Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
boot As expected, things aren't as simple as hoped. Consequently, we have 2015-09-07 17:56:49 +00:00
bsm
cam Reimplement CTL High Availability. 2015-09-10 12:40:31 +00:00
cddl Remove the arg0 field from struct amd64_frame. Its existence was a bug, 2015-09-11 03:31:22 +00:00
compat Fixes a panic triggered by threaded Linux applications when running 2015-09-02 14:04:13 +00:00
conf Merge stack(9) implementations for i386 and amd64 under x86/. 2015-09-11 03:24:07 +00:00
contrib Fix compilation error on gcc-5.2.0 - it now warns on non-paranthen'ed 2015-08-30 08:46:50 +00:00
crypto const'ify an arg that we don't update... 2015-07-29 23:37:15 +00:00
ddb Make kstack_pages a tunable on arm, x86, and powepc. On i386, the 2015-08-10 17:18:21 +00:00
dev Add a comment that to clarify how to determine the amount of received DDP 2015-09-10 21:41:11 +00:00
fs Fix an NFS server bug that manifested in "ls -al" displaying a plus 2015-08-28 14:26:11 +00:00
gdb CALLOUT_MPSAFE has lost its meaning since r141428, i.e., for more than ten 2015-05-22 17:05:21 +00:00
geom After the introduction of direct dispatch, the pacing code in g_down() 2015-09-02 17:29:30 +00:00
gnu Using consistent coding style to deal with error inside the loop. 2015-08-18 13:16:23 +00:00
i386 Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
isa
kern Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
kgssapi
libkern Remove checks for __ARM_EABI__, we only build for EABI now. 2015-07-09 21:02:40 +00:00
mips Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
modules Reimplement CTL High Availability. 2015-09-10 12:40:31 +00:00
net - Remove GIF_{SEND,ACCEPT}_REVETHIP. 2015-09-10 05:59:39 +00:00
net80211 Replay r286410. Change KPI of how device drivers that provide wireless 2015-08-27 08:56:39 +00:00
netgraph * Address review (and add a bit myself). 2015-07-12 18:14:38 +00:00
netinet RFC 4960 requires that packets containing an INIT chunk bundled with 2015-09-07 14:00:38 +00:00
netinet6 Remove SIOCGDRLST_IN6 and SIOCGPRLST_IN6 forgotten in the previous commit. 2015-09-10 08:37:03 +00:00
netipsec Make IPsec work with AES-GCM and AES-ICM (aka CTR) in OCF... IPsec 2015-08-04 17:47:11 +00:00
netnatm
netpfil pf: Fix misdetection of forwarding when net.link.bridge.pfil_bridge is set 2015-09-01 19:04:04 +00:00
netsmb
nfs
nfsclient Remove some oldnfs remnants. 2015-04-18 16:08:06 +00:00
nfsserver
nlm
ofed Currently the Linux character device mmap handling only supports mmap 2015-09-03 18:27:39 +00:00
opencrypto Make IPsec work with AES-GCM and AES-ICM (aka CTR) in OCF... IPsec 2015-08-04 17:47:11 +00:00
pc98 Add missing ofw_machdep.h. Make x86 ofw_machdep.h work pc98 too. 2015-08-28 15:41:09 +00:00
powerpc Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
rpc Set curvnet context inside the RPC code in more places. 2015-08-18 18:12:46 +00:00
security fd: make 'rights' a manadatory argument to fget* functions 2015-07-05 19:05:16 +00:00
sparc64 Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
sys Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
teken Sync HPA and VPA implementations with CUP. 2015-08-24 07:49:27 +00:00
tools
ufs Do not consume extra reference. This is a bug in r287479. 2015-09-05 12:28:18 +00:00
vm Remove the v_cache_min and v_cache_max sysctls. They are unused and have 2015-09-11 03:00:24 +00:00
x86 Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
xdr
xen xen: allow disabling PV disks and nics 2015-08-21 15:53:08 +00:00
Makefile Kill EoL whitespace. 2015-05-29 14:03:07 +00:00