diff options
| -rw-r--r-- | kernel/debug/gdbstub.c | 4 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_bp.c | 75 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_main.c | 588 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_private.h | 5 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_support.c | 18 |
5 files changed, 381 insertions, 309 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c index e149a0ac9e9e..8372897402f4 100644 --- a/kernel/debug/gdbstub.c +++ b/kernel/debug/gdbstub.c @@ -321,7 +321,7 @@ int kgdb_hex2long(char **ptr, unsigned long *long_val) /* * Copy the binary array pointed to by buf into mem. Fix $, #, and * 0x7d escaped with 0x7d. Return -EFAULT on failure or 0 on success. - * The input buf is overwitten with the result to write to mem. + * The input buf is overwritten with the result to write to mem. */ static int kgdb_ebin2mem(char *buf, char *mem, int count) { @@ -952,7 +952,7 @@ static int gdb_cmd_exception_pass(struct kgdb_state *ks) } /* - * This function performs all gdbserial command procesing + * This function performs all gdbserial command processing */ int gdb_serial_stub(struct kgdb_state *ks) { diff --git a/kernel/debug/kdb/kdb_bp.c b/kernel/debug/kdb/kdb_bp.c index ec4940146612..2168f8dacb99 100644 --- a/kernel/debug/kdb/kdb_bp.c +++ b/kernel/debug/kdb/kdb_bp.c @@ -522,6 +522,54 @@ static int kdb_ss(int argc, const char **argv) return KDB_CMD_SS; } +static kdbtab_t bptab[] = { + { .cmd_name = "bp", + .cmd_func = kdb_bp, + .cmd_usage = "[<vaddr>]", + .cmd_help = "Set/Display breakpoints", + .cmd_flags = KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "bl", + .cmd_func = kdb_bp, + .cmd_usage = "[<vaddr>]", + .cmd_help = "Display breakpoints", + .cmd_flags = KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "bc", + .cmd_func = kdb_bc, + .cmd_usage = "<bpnum>", + .cmd_help = "Clear Breakpoint", + .cmd_flags = KDB_ENABLE_FLOW_CTRL, + }, + { .cmd_name = "be", + .cmd_func = kdb_bc, + .cmd_usage = "<bpnum>", + .cmd_help = "Enable Breakpoint", + .cmd_flags = KDB_ENABLE_FLOW_CTRL, + }, + { .cmd_name = "bd", + .cmd_func = kdb_bc, + .cmd_usage = "<bpnum>", + .cmd_help = "Disable Breakpoint", + .cmd_flags = KDB_ENABLE_FLOW_CTRL, + }, + { .cmd_name = "ss", + .cmd_func = kdb_ss, + .cmd_usage = "", + .cmd_help = "Single Step", + .cmd_minlen = 1, + .cmd_flags = KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS, + }, +}; + +static kdbtab_t bphcmd = { + .cmd_name = "bph", + .cmd_func = kdb_bp, + .cmd_usage = "[<vaddr>]", + .cmd_help = "[datar [length]|dataw [length]] Set hw brk", + .cmd_flags = KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS, +}; + /* Initialize the breakpoint table and register breakpoint commands. */ void __init kdb_initbptab(void) @@ -537,30 +585,7 @@ void __init kdb_initbptab(void) for (i = 0, bp = kdb_breakpoints; i < KDB_MAXBPT; i++, bp++) bp->bp_free = 1; - kdb_register_flags("bp", kdb_bp, "[<vaddr>]", - "Set/Display breakpoints", 0, - KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS); - kdb_register_flags("bl", kdb_bp, "[<vaddr>]", - "Display breakpoints", 0, - KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS); + kdb_register_table(bptab, ARRAY_SIZE(bptab)); if (arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT) - kdb_register_flags("bph", kdb_bp, "[<vaddr>]", - "[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, - KDB_ENABLE_FLOW_CTRL); - kdb_register_flags("be", kdb_bc, "<bpnum>", - "Enable Breakpoint", 0, - KDB_ENABLE_FLOW_CTRL); - kdb_register_flags("bd", kdb_bc, "<bpnum>", - "Disable Breakpoint", 0, - KDB_ENABLE_FLOW_CTRL); - - kdb_register_flags("ss", kdb_ss, "", - "Single Step", 1, - KDB_ENABLE_FLOW_CTRL | KDB_REPEAT_NO_ARGS); - /* - * Architecture dependent initialization. - */ + kdb_register_table(&bphcmd, 1); } diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c index 930ac1b25ec7..405d24aa5156 100644 --- a/kernel/debug/kdb/kdb_main.c +++ b/kernel/debug/kdb/kdb_main.c @@ -33,6 +33,7 @@ #include <linux/kallsyms.h> #include <linux/kgdb.h> #include <linux/kdb.h> +#include <linux/list.h> #include <linux/notifier.h> #include <linux/interrupt.h> #include <linux/delay.h> @@ -84,15 +85,8 @@ static unsigned int kdb_continue_catastrophic = static unsigned int kdb_continue_catastrophic; #endif -/* kdb_commands describes the available commands. */ -static kdbtab_t *kdb_commands; -#define KDB_BASE_CMD_MAX 50 -static int kdb_max_commands = KDB_BASE_CMD_MAX; -static kdbtab_t kdb_base_commands[KDB_BASE_CMD_MAX]; -#define for_each_kdbcmd(cmd, num) \ - for ((cmd) = kdb_base_commands, (num) = 0; \ - num < kdb_max_commands; \ - num++, num == KDB_BASE_CMD_MAX ? cmd = kdb_commands : cmd++) +/* kdb_cmds_head describes the available commands. */ +static LIST_HEAD(kdb_cmds_head); typedef struct _kdbmsg { int km_diag; /* kdb diagnostic */ @@ -146,42 +140,18 @@ static const int __nkdb_err = ARRAY_SIZE(kdbmsgs); * KDB_ENVBUFSIZE if required). */ -static char *__env[] = { +static char *__env[31] = { #if defined(CONFIG_SMP) - "PROMPT=[%d]kdb> ", + "PROMPT=[%d]kdb> ", #else - "PROMPT=kdb> ", + "PROMPT=kdb> ", #endif - "MOREPROMPT=more> ", - "RADIX=16", - "MDCOUNT=8", /* lines of md output */ - KDB_PLATFORM_ENV, - "DTABCOUNT=30", - "NOSECT=1", - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, - (char *)0, + "MOREPROMPT=more> ", + "RADIX=16", + "MDCOUNT=8", /* lines of md output */ + KDB_PLATFORM_ENV, + "DTABCOUNT=30", + "NOSECT=1", }; static const int __nenv = ARRAY_SIZE(__env); @@ -324,6 +294,63 @@ int kdbgetintenv(const char *match, int *value) } /* + * kdb_setenv() - Alter an existing environment variable or create a new one. + * @var: Name of the variable + * @val: Value of the variable + * + * Return: Zero on success, a kdb diagnostic on failure. + */ +static int kdb_setenv(const char *var, const char *val) +{ + int i; + char *ep; + size_t varlen, vallen; + + varlen = strlen(var); + vallen = strlen(val); + ep = kdballocenv(varlen + vallen + 2); + if (ep == (char *)0) + return KDB_ENVBUFFULL; + + sprintf(ep, "%s=%s", var, val); + + for (i = 0; i < __nenv; i++) { + if (__env[i] + && ((strncmp(__env[i], var, varlen) == 0) + && ((__env[i][varlen] == '\0') + || (__env[i][varlen] == '=')))) { + __env[i] = ep; + return 0; + } + } + + /* + * Wasn't existing variable. Fit into slot. + */ + for (i = 0; i < __nenv-1; i++) { + if (__env[i] == (char *)0) { + __env[i] = ep; + return 0; + } + } + + return KDB_ENVFULL; +} + +/* + * kdb_printenv() - Display the current environment variables. + */ +static void kdb_printenv(void) +{ + int i; + + for (i = 0; i < __nenv; i++) { + if (__env[i]) + kdb_printf("%s\n", __env[i]); + } +} + +/* * kdbgetularg - This function will convert a numeric string into an * unsigned long value. * Parameters: @@ -380,10 +407,6 @@ int kdbgetu64arg(const char *arg, u64 *value) */ int kdb_set(int argc, const char **argv) { - int i; - char *ep; - size_t varlen, vallen; - /* * we can be invoked two ways: * set var=value argv[1]="var", argv[2]="value" @@ -428,37 +451,7 @@ int kdb_set(int argc, const char **argv) * Tokenizer squashed the '=' sign. argv[1] is variable * name, argv[2] = value. */ - varlen = strlen(argv[1]); - vallen = strlen(argv[2]); - ep = kdballocenv(varlen + vallen + 2); - if (ep == (char *)0) - return KDB_ENVBUFFULL; - - sprintf(ep, "%s=%s", argv[1], argv[2]); - - ep[varlen+vallen+1] = '\0'; - - for (i = 0; i < __nenv; i++) { - if (__env[i] - && ((strncmp(__env[i], argv[1], varlen) == 0) - && ((__env[i][varlen] == '\0') - || (__env[i][varlen] == '=')))) { - __env[i] = ep; - return 0; - } - } - - /* - * Wasn't existing variable. Fit into slot. - */ - for (i = 0; i < __nenv-1; i++) { - if (__env[i] == (char *)0) { - __env[i] = ep; - return 0; - } - } - - return KDB_ENVFULL; + return kdb_setenv(argv[1], argv[2]); } static int kdb_check_regs(void) @@ -921,7 +914,7 @@ int kdb_parse(const char *cmdstr) char *cp; char *cpp, quoted; kdbtab_t *tp; - int i, escaped, ignore_errors = 0, check_grep = 0; + int escaped, ignore_errors = 0, check_grep = 0; /* * First tokenize the command string. @@ -1011,25 +1004,17 @@ int kdb_parse(const char *cmdstr) ++argv[0]; } - for_each_kdbcmd(tp, i) { - if (tp->cmd_name) { - /* - * If this command is allowed to be abbreviated, - * check to see if this is it. - */ - - if (tp->cmd_minlen - && (strlen(argv[0]) <= tp->cmd_minlen)) { - if (strncmp(argv[0], - tp->cmd_name, - tp->cmd_minlen) == 0) { - break; - } - } + list_for_each_entry(tp, &kdb_cmds_head, list_node) { + /* + * If this command is allowed to be abbreviated, + * check to see if this is it. + */ + if (tp->cmd_minlen && (strlen(argv[0]) <= tp->cmd_minlen) && + (strncmp(argv[0], tp->cmd_name, tp->cmd_minlen) == 0)) + break; - if (strcmp(argv[0], tp->cmd_name) == 0) - break; - } + if (strcmp(argv[0], tp->cmd_name) == 0) + break; } /* @@ -1037,19 +1022,15 @@ int kdb_parse(const char *cmdstr) * few characters of this match any of the known commands. * e.g., md1c20 should match md. */ - if (i == kdb_max_commands) { - for_each_kdbcmd(tp, i) { - if (tp->cmd_name) { - if (strncmp(argv[0], - tp->cmd_name, - strlen(tp->cmd_name)) == 0) { - break; - } - } + if (list_entry_is_head(tp, &kdb_cmds_head, list_node)) { + list_for_each_entry(tp, &kdb_cmds_head, list_node) { + if (strncmp(argv[0], tp->cmd_name, + strlen(tp->cmd_name)) == 0) + break; } } - if (i < kdb_max_commands) { + if (!list_entry_is_head(tp, &kdb_cmds_head, list_node)) { int result; if (!kdb_check_flags(tp->cmd_flags, kdb_cmd_enabled, argc <= 1)) @@ -2073,12 +2054,7 @@ static int kdb_lsmod(int argc, const char **argv) static int kdb_env(int argc, const char **argv) { - int i; - - for (i = 0; i < __nenv; i++) { - if (__env[i]) - kdb_printf("%s\n", __env[i]); - } + kdb_printenv(); if (KDB_DEBUG(MASK)) kdb_printf("KDBDEBUG=0x%x\n", @@ -2428,17 +2404,14 @@ static int kdb_kgdb(int argc, const char **argv) static int kdb_help(int argc, const char **argv) { kdbtab_t *kt; - int i; kdb_printf("%-15.15s %-20.20s %s\n", "Command", "Usage", "Description"); kdb_printf("-----------------------------" "-----------------------------\n"); - for_each_kdbcmd(kt, i) { + list_for_each_entry(kt, &kdb_cmds_head, list_node) { char *space = ""; if (KDB_FLAG(CMD_INTERRUPT)) return 0; - if (!kt->cmd_name) - continue; if (!kdb_check_flags(kt->cmd_flags, kdb_cmd_enabled, true)) continue; if (strlen(kt->cmd_usage) > 20) @@ -2659,7 +2632,6 @@ static int kdb_grep_help(int argc, const char **argv) * Returns: * zero for success, one if a duplicate command. */ -#define kdb_command_extend 50 /* arbitrary */ int kdb_register_flags(char *cmd, kdb_func_t func, char *usage, @@ -2667,49 +2639,20 @@ int kdb_register_flags(char *cmd, short minlen, kdb_cmdflags_t flags) { - int i; kdbtab_t *kp; - /* - * Brute force method to determine duplicates - */ - for_each_kdbcmd(kp, i) { - if (kp->cmd_name && (strcmp(kp->cmd_name, cmd) == 0)) { + list_for_each_entry(kp, &kdb_cmds_head, list_node) { + if (strcmp(kp->cmd_name, cmd) == 0) { kdb_printf("Duplicate kdb command registered: " "%s, func %px help %s\n", cmd, func, help); return 1; } } - /* - * Insert command into first available location in table - */ - for_each_kdbcmd(kp, i) { - if (kp->cmd_name == NULL) - break; - } - - if (i >= kdb_max_commands) { - kdbtab_t *new = kmalloc_array(kdb_max_commands - - KDB_BASE_CMD_MAX + - kdb_command_extend, - sizeof(*new), - GFP_KDB); - if (!new) { - kdb_printf("Could not allocate new kdb_command " - "table\n"); - return 1; - } - if (kdb_commands) { - memcpy(new, kdb_commands, - (kdb_max_commands - KDB_BASE_CMD_MAX) * sizeof(*new)); - kfree(kdb_commands); - } - memset(new + kdb_max_commands - KDB_BASE_CMD_MAX, 0, - kdb_command_extend * sizeof(*new)); - kdb_commands = new; - kp = kdb_commands + kdb_max_commands - KDB_BASE_CMD_MAX; - kdb_max_commands += kdb_command_extend; + kp = kmalloc(sizeof(*kp), GFP_KDB); + if (!kp) { + kdb_printf("Could not allocate new kdb_command table\n"); + return 1; } kp->cmd_name = cmd; @@ -2718,11 +2661,27 @@ int kdb_register_flags(char *cmd, kp->cmd_help = help; kp->cmd_minlen = minlen; kp->cmd_flags = flags; + kp->is_dynamic = true; + + list_add_tail(&kp->list_node, &kdb_cmds_head); return 0; } EXPORT_SYMBOL_GPL(kdb_register_flags); +/* + * kdb_register_table() - This function is used to register a kdb command + * table. + * @kp: pointer to kdb command table + * @len: length of kdb command table + */ +void kdb_register_table(kdbtab_t *kp, size_t len) +{ + while (len--) { + list_add_tail(&kp->list_node, &kdb_cmds_head); + kp++; + } +} /* * kdb_register - Compatibility register function for commands that do @@ -2757,15 +2716,16 @@ EXPORT_SYMBOL_GPL(kdb_register); */ int kdb_unregister(char *cmd) { - int i; kdbtab_t *kp; /* * find the command. */ - for_each_kdbcmd(kp, i) { - if (kp->cmd_name && (strcmp(kp->cmd_name, cmd) == 0)) { - kp->cmd_name = NULL; + list_for_each_entry(kp, &kdb_cmds_head, list_node) { + if (strcmp(kp->cmd_name, cmd) == 0) { + list_del(&kp->list_node); + if (kp->is_dynamic) + kfree(kp); return 0; } } @@ -2775,118 +2735,222 @@ int kdb_unregister(char *cmd) } EXPORT_SYMBOL_GPL(kdb_unregister); -/* Initialize the kdb command table. */ -static void __init kdb_inittab(void) -{ - int i; - kdbtab_t *kp; - - for_each_kdbcmd(kp, i) - kp->cmd_name = NULL; - - kdb_register_flags("md", kdb_md, "<vaddr>", - "Display Memory Contents, also mdWcN, e.g. md8c1", 1, - KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS); - kdb_register_flags("mdr", kdb_md, "<vaddr> <bytes>", - "Display Raw Memory", 0, - KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS); - kdb_register_flags("mdp", kdb_md, "<paddr> <bytes>", - "Display Physical Memory", 0, - KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS); - kdb_register_flags("mds", kdb_md, "<vaddr>", - "Display Memory Symbolically", 0, - KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS); - kdb_register_flags("mm", kdb_mm, "<vaddr> <contents>", - "Modify Memory Contents", 0, - KDB_ENABLE_MEM_WRITE | KDB_REPEAT_NO_ARGS); - kdb_register_flags("go", kdb_go, "[<vaddr>]", - "Continue Execution", 1, - KDB_ENABLE_REG_WRITE | KDB_ENABLE_ALWAYS_SAFE_NO_ARGS); - kdb_register_flags("rd", kdb_rd, "", - "Display Registers", 0, - KDB_ENABLE_REG_READ); - kdb_register_flags("rm", kdb_rm, "<reg> <contents>", - "Modify Registers", 0, - KDB_ENABLE_REG_WRITE); - kdb_register_flags("ef", kdb_ef, "<vaddr>", - "Display exception frame", 0, - KDB_ENABLE_MEM_READ); - kdb_register_flags("bt", kdb_bt, "[<vaddr>]", - "Stack traceback", 1, - KDB_ENABLE_MEM_READ | KDB_ENABLE_INSPECT_NO_ARGS); - kdb_register_flags("btp", kdb_bt, "<pid>", - "Display stack for process <pid>", 0, - KDB_ENABLE_INSPECT); - kdb_register_flags("bta", kdb_bt, "[D|R|S|T|C|Z|E|U|I|M|A]", - "Backtrace all processes matching state flag", 0, - KDB_ENABLE_INSPECT); - kdb_register_flags("btc", kdb_bt, "", - "Backtrace current process on each cpu", 0, - KDB_ENABLE_INSPECT); - kdb_register_flags("btt", kdb_bt, "<vaddr>", - "Backtrace process given its struct task address", 0, - KDB_ENABLE_MEM_READ | KDB_ENABLE_INSPECT_NO_ARGS); - kdb_register_flags("env", kdb_env, "", - "Show environment variables", 0, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("set", kdb_set, "", - "Set environment variables", 0, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("help", kdb_help, "", - "Display Help Message", 1, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("?", kdb_help, "", - "Display Help Message", 0, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("cpu", kdb_cpu, "<cpunum>", - "Switch to new cpu", 0, - KDB_ENABLE_ALWAYS_SAFE_NO_ARGS); - kdb_register_flags("kgdb", kdb_kgdb, "", - "Enter kgdb mode", 0, 0); - kdb_register_flags("ps", kdb_ps, "[<flags>|A]", - "Display active task list", 0, - KDB_ENABLE_INSPECT); - kdb_register_flags("pid", kdb_pid, "<pidnum>", - "Switch to another task", 0, - KDB_ENABLE_INSPECT); - kdb_register_flags("reboot", kdb_reboot, "", - "Reboot the machine immediately", 0, - KDB_ENABLE_REBOOT); +static kdbtab_t maintab[] = { + { .cmd_name = "md", + .cmd_func = kdb_md, + .cmd_usage = "<vaddr>", + .cmd_help = "Display Memory Contents, also mdWcN, e.g. md8c1", + .cmd_minlen = 1, + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "mdr", + .cmd_func = kdb_md, + .cmd_usage = "<vaddr> <bytes>", + .cmd_help = "Display Raw Memory", + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "mdp", + .cmd_func = kdb_md, + .cmd_usage = "<paddr> <bytes>", + .cmd_help = "Display Physical Memory", + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "mds", + .cmd_func = kdb_md, + .cmd_usage = "<vaddr>", + .cmd_help = "Display Memory Symbolically", + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "mm", + .cmd_func = kdb_mm, + .cmd_usage = "<vaddr> <contents>", + .cmd_help = "Modify Memory Contents", + .cmd_flags = KDB_ENABLE_MEM_WRITE | KDB_REPEAT_NO_ARGS, + }, + { .cmd_name = "go", + .cmd_func = kdb_go, + .cmd_usage = "[<vaddr>]", + .cmd_help = "Continue Execution", + .cmd_minlen = 1, + .cmd_flags = KDB_ENABLE_REG_WRITE | + KDB_ENABLE_ALWAYS_SAFE_NO_ARGS, + }, + { .cmd_name = "rd", + .cmd_func = kdb_rd, + .cmd_usage = "", + .cmd_help = "Display Registers", + .cmd_flags = KDB_ENABLE_REG_READ, + }, + { .cmd_name = "rm", + .cmd_func = kdb_rm, + .cmd_usage = "<reg> <contents>", + .cmd_help = "Modify Registers", + .cmd_flags = KDB_ENABLE_REG_WRITE, + }, + { .cmd_name = "ef", + .cmd_func = kdb_ef, + .cmd_usage = "<vaddr>", + .cmd_help = "Display exception frame", + .cmd_flags = KDB_ENABLE_MEM_READ, + }, + { .cmd_name = "bt", + .cmd_func = kdb_bt, + .cmd_usage = "[<vaddr>]", + .cmd_help = "Stack traceback", + .cmd_minlen = 1, + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_ENABLE_INSPECT_NO_ARGS, + }, + { .cmd_name = "btp", + .cmd_func = kdb_bt, + .cmd_usage = "<pid>", + .cmd_help = "Display stack for process <pid>", + .cmd_flags = KDB_ENABLE_INSPECT, + }, + { .cmd_name = "bta", + .cmd_func = kdb_bt, + .cmd_usage = "[D|R|S|T|C|Z|E|U|I|M|A]", + .cmd_help = "Backtrace all processes matching state flag", + .cmd_flags = KDB_ENABLE_INSPECT, + }, + { .cmd_name = "btc", + .cmd_func = kdb_bt, + .cmd_usage = "", + .cmd_help = "Backtrace current process on each cpu", + .cmd_flags = KDB_ENABLE_INSPECT, + }, + { .cmd_name = "btt", + .cmd_func = kdb_bt, + .cmd_usage = "<vaddr>", + .cmd_help = "Backtrace process given its struct task address", + .cmd_flags = KDB_ENABLE_MEM_READ | KDB_ENABLE_INSPECT_NO_ARGS, + }, + { .cmd_name = "env", + .cmd_func = kdb_env, + .cmd_usage = "", + .cmd_help = "Show environment variables", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "set", + .cmd_func = kdb_set, + .cmd_usage = "", + .cmd_help = "Set environment variables", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "help", + .cmd_func = kdb_help, + .cmd_usage = "", + .cmd_help = "Display Help Message", + .cmd_minlen = 1, + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "?", + .cmd_func = kdb_help, + .cmd_usage = "", + .cmd_help = "Display Help Message", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "cpu", + .cmd_func = kdb_cpu, + .cmd_usage = "<cpunum>", + .cmd_help = "Switch to new cpu", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE_NO_ARGS, + }, + { .cmd_name = "kgdb", + .cmd_func = kdb_kgdb, + .cmd_usage = "", + .cmd_help = "Enter kgdb mode", + .cmd_flags = 0, + }, + { .cmd_name = "ps", + .cmd_func = kdb_ps, + .cmd_usage = "[<flags>|A]", + .cmd_help = "Display active task list", + .cmd_flags = KDB_ENABLE_INSPECT, + }, + { .cmd_name = "pid", + .cmd_func = kdb_pid, + .cmd_usage = "<pidnum>", + .cmd_help = "Switch to another task", + .cmd_flags = KDB_ENABLE_INSPECT, + }, + { .cmd_name = "reboot", + .cmd_func = kdb_reboot, + .cmd_usage = "", + .cmd_help = "Reboot the machine immediately", + .cmd_flags = KDB_ENABLE_REBOOT, + }, #if defined(CONFIG_MODULES) - kdb_register_flags("lsmod", kdb_lsmod, "", - "List loaded kernel modules", 0, - KDB_ENABLE_INSPECT); + { .cmd_name = "lsmod", + .cmd_func = kdb_lsmod, + .cmd_usage = "", + .cmd_help = "List loaded kernel modules", + .cmd_flags = KDB_ENABLE_INSPECT, + }, #endif #if defined(CONFIG_MAGIC_SYSRQ) - kdb_register_flags("sr", kdb_sr, "<key>", - "Magic SysRq key", 0, - KDB_ENABLE_ALWAYS_SAFE); + { .cmd_name = "sr", + .cmd_func = kdb_sr, + .cmd_usage = "<key>", + .cmd_help = "Magic SysRq key", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, #endif #if defined(CONFIG_PRINTK) - kdb_register_flags("dmesg", kdb_dmesg, "[lines]", - "Display syslog buffer", 0, - KDB_ENABLE_ALWAYS_SAFE); + { .cmd_name = "dmesg", + .cmd_func = kdb_dmesg, + .cmd_usage = "[lines]", + .cmd_help = "Display syslog buffer", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, #endif - if (arch_kgdb_ops.enable_nmi) { - kdb_register_flags("disable_nmi", kdb_disable_nmi, "", - "Disable NMI entry to KDB", 0, - KDB_ENABLE_ALWAYS_SAFE); - } - kdb_register_flags("defcmd", kdb_defcmd, "name \"usage\" \"help\"", - "Define a set of commands, down to endefcmd", 0, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("kill", kdb_kill, "<-signal> <pid>", - "Send a signal to a process", 0, - KDB_ENABLE_SIGNAL); - kdb_register_flags("summary", kdb_summary, "", - "Summarize the system", 4, - KDB_ENABLE_ALWAYS_SAFE); - kdb_register_flags("per_cpu", kdb_per_cpu, "<sym> [<bytes>] [<cpu>]", - "Display per_cpu variables", 3, - KDB_ENABLE_MEM_READ); - kdb_register_flags("grephelp", kdb_grep_help, "", - "Display help on | grep", 0, - KDB_ENABLE_ALWAYS_SAFE); + { .cmd_name = "defcmd", + .cmd_func = kdb_defcmd, + .cmd_usage = "name \"usage\" \"help\"", + .cmd_help = "Define a set of commands, down to endefcmd", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "kill", + .cmd_func = kdb_kill, + .cmd_usage = "<-signal> <pid>", + .cmd_help = "Send a signal to a process", + .cmd_flags = KDB_ENABLE_SIGNAL, + }, + { .cmd_name = "summary", + .cmd_func = kdb_summary, + .cmd_usage = "", + .cmd_help = "Summarize the system", + .cmd_minlen = 4, + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, + { .cmd_name = "per_cpu", + .cmd_func = kdb_per_cpu, + .cmd_usage = "<sym> [<bytes>] [<cpu>]", + .cmd_help = "Display per_cpu variables", + .cmd_minlen = 3, + .cmd_flags = KDB_ENABLE_MEM_READ, + }, + { .cmd_name = "grephelp", + .cmd_func = kdb_grep_help, + .cmd_usage = "", + .cmd_help = "Display help on | grep", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, + }, +}; + +static kdbtab_t nmicmd = { + .cmd_name = "disable_nmi", + .cmd_func = kdb_disable_nmi, + .cmd_usage = "", + .cmd_help = "Disable NMI entry to KDB", + .cmd_flags = KDB_ENABLE_ALWAYS_SAFE, +}; + +/* Initialize the kdb command table. */ +static void __init kdb_inittab(void) +{ + kdb_register_table(maintab, ARRAY_SIZE(maintab)); + if (arch_kgdb_ops.enable_nmi) + kdb_register_table(&nmicmd, 1); } /* Execute any commands defined in kdb_cmds. */ diff --git a/kernel/debug/kdb/kdb_private.h b/kernel/debug/kdb/kdb_private.h index 6cb92f7bbbd0..ccbed9089808 100644 --- a/kernel/debug/kdb/kdb_private.h +++ b/kernel/debug/kdb/kdb_private.h @@ -174,8 +174,11 @@ typedef struct _kdbtab { short cmd_minlen; /* Minimum legal # command * chars required */ kdb_cmdflags_t cmd_flags; /* Command behaviour flags */ + struct list_head list_node; /* Command list */ + bool is_dynamic; /* Command table allocation type */ } kdbtab_t; +extern void kdb_register_table(kdbtab_t *kp, size_t len); extern int kdb_bt(int, const char **); /* KDB display back trace */ /* KDB breakpoint management functions */ @@ -207,9 +210,7 @@ extern unsigned long kdb_task_state(const struct task_struct *p, unsigned long mask); extern void kdb_ps_suppressed(void); extern void kdb_ps1(const struct task_struct *p); -extern void kdb_print_nameval(const char *name, unsigned long val); extern void kdb_send_sig(struct task_struct *p, int sig); -extern void kdb_meminfo_proc_show(void); extern char kdb_getchar(void); extern char *kdb_getstr(char *, size_t, const char *); extern void kdb_gdb_state_pass(char *buf); diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c index f7c1885abeb6..91bb666d7c03 100644 --- a/kernel/debug/kdb/kdb_support.c +++ b/kernel/debug/kdb/kdb_support.c @@ -654,24 +654,6 @@ unsigned long kdb_task_state(const struct task_struct *p, unsigned long mask) return (mask & kdb_task_state_string(state)) != 0; } -/* - * kdb_print_nameval - Print a name and its value, converting the - * value to a symbol lookup if possible. - * Inputs: - * name field name to print - * val value of field - */ -void kdb_print_nameval(const char *name, unsigned long val) -{ - kdb_symtab_t symtab; - kdb_printf(" %-11.11s ", name); - if (kdbnearsym(val, &symtab)) - kdb_symbol_print(val, &symtab, - KDB_SP_VALUE|KDB_SP_SYMSIZE|KDB_SP_NEWLINE); - else - kdb_printf("0x%lx\n", val); -} - /* Last ditch allocator for debugging, so we can still debug even when * the GFP_ATOMIC pool has been exhausted. The algorithms are tuned * for space usage, not for speed. One smallish memory pool, the free |