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kdb: Categorize kdb commands (similar to SysRq categorization)

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This patch introduces several new flags to collect kdb commands into
groups (later allowing them to be optionally disabled).

This follows similar prior art to enable/disable magic sysrq
commands.

The commands have been categorized as follows:

Always on:  go (w/o args), env, set, help, ?, cpu (w/o args), sr,
            dmesg, disable_nmi, defcmd, summary, grephelp
Mem read:   md, mdr, mdp, mds, ef, bt (with args), per_cpu
Mem write:  mm
Reg read:   rd
Reg write:  go (with args), rm
Inspect:    bt (w/o args), btp, bta, btc, btt, ps, pid, lsmod
Flow ctrl:  bp, bl, bph, bc, be, bd, ss
Signal:     kill
Reboot:     reboot
All:        cpu, kgdb, (and all of the above), nmi_console

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
This commit is contained in:
Daniel Thompson
2014-11-06 14:36:45 +00:00
committed by Jason Wessel
parent e8ab24d9b0
commit 9452e977ac
4 changed files with 148 additions and 43 deletions
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21
kernel/debug/kdb/kdb_bp.c
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@@ -532,21 +532,28 @@ void __init kdb_initbptab(void)
bp->bp_free = 1;
kdb_register_flags("bp", kdb_bp, "[<vaddr>]",
"Set/Display breakpoints", 0, KDB_REPEAT_NO_ARGS);
"Set/Display breakpoints", 0,
KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS);
kdb_register_flags("bl", kdb_bp, "[<vaddr>]",
"Display breakpoints", 0, KDB_REPEAT_NO_ARGS);
"Display breakpoints", 0,
KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS);
if (arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT)
kdb_register_flags("bph", kdb_bp, "[<vaddr>]",
"[datar [length]|dataw [length]] Set hw brk", 0, KDB_REPEAT_NO_ARGS);
"[datar [length]|dataw [length]] Set hw brk", 0,
KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS);
kdb_register_flags("bc", kdb_bc, "<bpnum>",
"Clear Breakpoint", 0, 0);
"Clear Breakpoint", 0,
KDB_ENABLE_FLOW_CTRL);
kdb_register_flags("be", kdb_bc, "<bpnum>",
"Enable Breakpoint", 0, 0);
"Enable Breakpoint", 0,
KDB_ENABLE_FLOW_CTRL);
kdb_register_flags("bd", kdb_bc, "<bpnum>",
"Disable Breakpoint", 0, 0);
"Disable Breakpoint", 0,
KDB_ENABLE_FLOW_CTRL);
kdb_register_flags("ss", kdb_ss, "",
"Single Step", 1, KDB_REPEAT_NO_ARGS);
"Single Step", 1,
KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS);
/*
* Architecture dependent initialization.
*/