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Jeff Dike 3eddddcf23 [PATCH] uml: breakpoint an arbitrary thread ... This patch implements a stack trace for a thread, not unlike sysrq-t does. The advantage to this is that a break point can be placed on showreqs, so that upon showing the stack, you jump immediately into the debugger. While sysrq-t does the same thing, sysrq-t shows *all* threads stacks. It also doesn't work right now. In the future, I thought it might be acceptable to make this show all pids stacks, but perhaps leaving well enough alone and just using sysrq-t would be okay. For now, upon receiving the stack command, UML switches context to that thread, dumps its registers, and then switches context back to the original thread. Since UML compacts all threads into one of 4 host threads, this sort of mechanism could be expanded in the future to include other debugging helpers that sysrq does not cover. Note by jdike - The main benefit to this is that it brings an arbitrary thread back into context, where it can be examined by gdb. The fact that it dumps it stack is secondary. This provides the capability to examine a sleeping thread, which has existed in tt mode, but not in skas mode until now. Also, the other threads, that sysrq doesn't cover, can be gdb-ed directly anyway. Signed-off-by: Allan Graves<allan.graves@gmail.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		20 years ago
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sysdep-i386	[PATCH] uml: system call path cleanup	20 years ago
sysdep-ia64	…
sysdep-ppc	…
sysdep-x86_64	[PATCH] uml: system call path cleanup	20 years ago
aio.h	[PATCH] uml: add host AIO support to block driver	20 years ago
chan_kern.h	…
chan_user.h	…
choose-mode.h	…
common-offsets.h	[PATCH] bogus symbol used in arch/um/os-Linux/elf_aux.c	20 years ago
elf_user.h	…
frame_kern.h	…
helper.h	…
init.h	[PATCH] uml: use host AIO support	20 years ago
initrd.h	…
irq_kern.h	[PATCH] uml: use host AIO support	20 years ago
irq_user.h	…
kern.h	…
kern_util.h	…
line.h	…
mconsole.h	[PATCH] uml: breakpoint an arbitrary thread	20 years ago
mconsole_kern.h	…
mem.h	[PATCH] uml: inline mk_pte and various friends	20 years ago
mem_kern.h	…
mem_user.h	…
mode.h	…
mode_kern.h	…
net_kern.h	…
net_user.h	…
os.h	[PATCH] uml: move libc-dependent startup and signal code	20 years ago
process.h	…
ptrace_user.h	…
registers.h	…
sigcontext.h	…
sigio.h	…
signal_kern.h	…
signal_user.h	…
skas_ptrace.h	…
syscall.h	[PATCH] uml: system call path cleanup	20 years ago
sysrq.h	…
tempfile.h	…
time_user.h	…
tlb.h	[PATCH] uml: skas0 stubs now check system call return values	20 years ago
ubd_user.h	…
um_mmu.h	…
um_uaccess.h	[PATCH] remove verify_area(): remove verify_area() from various uaccess.h headers	20 years ago
umid.h	…
uml_uaccess.h	…
user.h	…
user_util.h	[PATCH] uml: move libc-dependent startup and signal code	20 years ago