NAME
foreach - display command data for multiple tasks in the system
SYNOPSIS
foreach [[pid | taskp | name | [kernel | user]] ...] command [flag] [argument]
DESCRIPTION
This command allows for a an examination of various kernel data associated
with any, or all, tasks in the system, without having to set the context
to each targeted task.
pid perform the command(s) on this PID.
taskp perform the command(s) on task referenced by this hexadecimal
task_struct pointer.
name perform the command(s) on all commands with this name. If the
command name can be confused with a foreach command name, then
precede the name string with a "\".
user perform the command(s) on all user (non-kernel) threads.
kernel perform the command(s) on all kernel threads.
active perform the command(s) on the active thread on each CPU.
If none of the task-identifying arguments above are entered, the command
will be performed on all tasks.
command select one or more of the following commands on the tasks
selected, or on all tasks:
bt same as the "bt" command (optional flags: -r -t -l -e -R -f)
vm same as the "vm" command (optional flags: -p -v -m -R)
task same as the "task" command (optional flag: -R)
files same as the "files" command (optional flag: -R)
net same as the "net" command (optional flags: -s -S -R)
set same as the "set" command
sig same as the "sig" command
vtop same as the "vtop" command (optional flags: -c -u -k)
flag Pass this optional flag to the command selected.
argument Pass this argument to the command selected.
A header containing the PID, task address, cpu and command name will be
pre-pended before the command output for each selected task. Consult the
help page of each of the command types above for details.
EXAMPLES
Display the stack traces for all tasks:
crash> foreach bt
PID: 4752 TASK: c7680000 CPU: 1 COMMAND: "xterm"
#0 [c7681edc] schedule at c01135f6
(void)
#1 [c7681f34] schedule_timeout at c01131ff
(24)
#2 [c7681f64] do_select at c0132838
(5, c7681fa4, c7681fa0)
#3 [c7681fbc] sys_select at c0132dad
(5, 8070300, 8070380, 0, 0)
#4 [bffffb0c] system_call at c0109944
EAX: 0000008e EBX: 00000005 ECX: 08070300 EDX: 08070380
DS: 002b ESI: 00000000 ES: 002b EDI: 00000000
SS: 002b ESP: bffffadc EBP: bffffb0c
CS: 0023 EIP: 402259ee ERR: 0000008e EFLAGS: 00000246
PID: 557 TASK: c5600000 CPU: 0 COMMAND: "nfsd"
#0 [c5601f38] schedule at c01135f6
(void)
#1 [c5601f90] schedule_timeout at c01131ff
(c5600000)
#2 [c5601fb8] svc_recv at c805363a
(c0096f40, c5602800, 7fffffff, 100, c65c9f1c)
#3 [c5601fec] (nfsd module) at c806e303
(c5602800, c5602800, c0096f40, 6c6e0002, 50)
#4 [c65c9f24] kernel_thread at c010834f
(0, 0, ext2_file_inode_operations)
PID: 824 TASK: c7c84000 CPU: 0 COMMAND: "mingetty"
...
Display the task_struct structure for each "bash" command:
crash> foreach bash task
...
Display the open files for all tasks:
crash> foreach files
...
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