// Simple command-line kernel monitor useful for
// controlling the kernel and exploring the system interactively.
-#ifdef __SHARC__
-#pragma nosharc
-#endif
-
#include <arch/arch.h>
-#include <stab.h>
#include <smp.h>
-#include <console.h>
#include <arch/console.h>
#include <stdio.h>
#include <event.h>
#include <trap.h>
#include <time.h>
+#include <percpu.h>
+#include <kprof.h>
#include <ros/memlayout.h>
#include <ros/event.h>
#define CMDBUF_SIZE 80 // enough for one VGA text line
typedef struct command {
- const char *NTS name;
- const char *NTS desc;
+ const char *name;
+ const char *desc;
// return -1 to force monitor to exit
int (*func)(int argc, char **argv, struct hw_trapframe *hw_tf);
} command_t;
-static command_t (RO commands)[] = {
+static command_t commands[] = {
{ "help", "Display this list of commands", mon_help },
{ "kerninfo", "Display information about the kernel", mon_kerninfo },
{ "backtrace", "Dump a backtrace", mon_backtrace },
+ { "bt", "Dump a backtrace", mon_backtrace },
{ "reboot", "Take a ride to the South Bay", mon_reboot },
{ "showmapping", "Shows VA->PA mappings", mon_showmapping},
- { "setmapperm", "Sets permissions on a VA->PA mapping", mon_setmapperm},
+ { "sm", "Shows VA->PA mappings", mon_sm},
{ "cpuinfo", "Prints CPU diagnostics", mon_cpuinfo},
{ "ps", "Prints process list", mon_ps},
{ "nanwan", "Meet Nanwan!!", mon_nanwan},
- { "bin_ls", "List files in /bin", mon_bin_ls},
{ "bin_run", "Create and run a program from /bin", mon_bin_run},
{ "manager", "Run the manager", mon_manager},
{ "procinfo", "Show information about processes", mon_procinfo},
+ { "pip", "Shorthand for procinfo pid", mon_pip},
+ { "kill", "Kills a process", mon_kill},
{ "exit", "Leave the monitor", mon_exit},
+ { "e", "Leave the monitor", mon_exit},
{ "kfunc", "Run a kernel function directly (!!!)", mon_kfunc},
{ "notify", "Notify a process. Vcoreid will skip their prefs", mon_notify},
{ "measure", "Run a specific measurement", mon_measure},
{ "trace", "Run some tracing functions", mon_trace},
{ "monitor", "Run the monitor on another core", mon_monitor},
- { "fs", "Filesystem Diagnostics", mon_fs},
- { "bb", "Try to run busybox (ash)", mon_bb},
+ { "sh", "Try to run a shell (bash)", mon_shell},
+ { "bash", "Try to run a shell (bash)", mon_shell},
+ { "bb", "Try to run a shell (bash)", mon_shell},
{ "alarm", "Alarm Diagnostics", mon_alarm},
{ "msr", "read/write msr: msr msr [value]", mon_msr},
+ { "db", "Misc debugging", mon_db},
+ { "px", "Toggle printx", mon_px},
+ { "kpfret", "Attempt to idle after a kernel fault", mon_kpfret},
+ { "ks", "Kernel scheduler hacks", mon_ks},
+ { "coreinfo", "Print diagnostics for a core", mon_coreinfo},
+ { "hexdump", "Hexdump PID's memory (0 for kernel)", mon_hexdump},
+ { "hd", "Hexdump PID's memory (0 for kernel)", mon_hexdump},
+ { "pahexdump", "Hexdump physical memory", mon_pahexdump},
+ { "phd", "Hexdump physical memory", mon_pahexdump},
+ { "dmesg", "Dump the dmesg buffer", mon_dmesg},
};
#define NCOMMANDS (sizeof(commands)/sizeof(commands[0]))
int mon_kerninfo(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- extern char (RO SNT _start)[], (RO SNT etext)[], (RO SNT edata)[], (RO SNT end)[];
+ extern char _start[], etext[], end[];
cprintf("Special kernel symbols:\n");
cprintf(" _start %016x (virt) %016x (phys)\n", _start, (uintptr_t)(_start - KERNBASE));
cprintf(" etext %016x (virt) %016x (phys)\n", etext, (uintptr_t)(etext - KERNBASE));
- cprintf(" edata %016x (virt) %016x (phys)\n", edata, (uintptr_t)(edata - KERNBASE));
cprintf(" end %016x (virt) %016x (phys)\n", end, (uintptr_t)(end - KERNBASE));
cprintf("Kernel executable memory footprint: %dKB\n",
(uint32_t)(end-_start+1023)/1024);
return 0;
}
-#if 0
-zra: not called
-static char RO* function_of(uint32_t address)
-{
- extern stab_t (RO stab)[], (RO estab)[];
- extern char (RO stabstr)[];
- stab_t* symtab;
- stab_t* best_symtab = 0;
- uint32_t best_func = 0;
-
- // ugly and unsorted
- for (symtab = stab; symtab < estab; symtab++) {
- // only consider functions, type = N_FUN
- if ((symtab->n_type == N_FUN) &&
- (symtab->n_value <= address) &&
- (symtab->n_value > best_func)) {
- best_func = symtab->n_value;
- best_symtab = symtab;
- }
- }
- // maybe the first stab really is the right one... we'll see.
- if (best_symtab == 0)
- return "Function not found!";
- return stabstr + best_symtab->n_strx;
-}
-#endif
-
-int mon_backtrace(int argc, char **argv, struct hw_trapframe *hw_tf)
+static int __backtrace(int argc, char **argv, struct hw_trapframe *hw_tf)
{
uintptr_t pc, fp;
if (argc == 1) {
}
pc = strtol(argv[1], 0, 16);
fp = strtol(argv[2], 0, 16);
+ print_lock();
printk("Backtrace from instruction %p, with frame pointer %p\n", pc, fp);
backtrace_frame(pc, fp);
+ print_unlock();
return 0;
}
+int mon_backtrace(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ return __backtrace(argc, argv, hw_tf);
+}
+
int mon_reboot(int argc, char **argv, struct hw_trapframe *hw_tf)
{
cprintf("[Scottish Accent]: She's goin' down, Cap'n!\n");
return 0;
}
-int mon_showmapping(int argc, char **argv, struct hw_trapframe *hw_tf)
+static int __showmapping(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- if (argc < 2) {
- cprintf("Shows virtual -> physical mappings for a virt addr range.\n");
- cprintf("Usage: showmapping START_ADDR [END_ADDR]\n");
- return 1;
- }
+ struct proc *p = NULL;
uintptr_t start;
size_t size;
- start = ROUNDDOWN(strtol(argv[1], 0, 16), PGSIZE);
- size = (argc == 2) ? 1 : strtol(argv[2], 0, 16) - start;
+ pgdir_t pgdir;
+ pid_t pid;
+
+ if (argc < 3) {
+ printk("Shows virtual -> physical mappings for a virt addr range.\n");
+ printk("Usage: showmapping PID START_ADDR [END_ADDR]\n");
+ printk(" PID == 0 for the boot pgdir\n");
+ return 1;
+ }
+ pid = strtol(argv[1], 0, 10);
+ if (!pid) {
+ pgdir = boot_pgdir;
+ } else {
+ p = pid2proc(pid);
+ if (!p) {
+ printk("No proc with pid %d\n", pid);
+ return 1;
+ }
+ pgdir = p->env_pgdir;
+ }
+ start = ROUNDDOWN(strtol(argv[2], 0, 16), PGSIZE);
+ size = (argc == 3) ? 1 : strtol(argv[3], 0, 16) - start;
if (size/PGSIZE > 512) {
cprintf("Not going to do this for more than 512 items\n");
return 1;
}
-
- show_mapping(start,size);
+ show_mapping(pgdir, start, size);
+ if (p)
+ proc_decref(p);
return 0;
}
-int mon_setmapperm(int argc, char **argv, struct hw_trapframe *hw_tf)
+int mon_showmapping(int argc, char **argv, struct hw_trapframe *hw_tf)
{
-#ifndef CONFIG_X86_32
- cprintf("I don't support this call yet!\n");
- return 1;
-#else
- if (argc < 3) {
- cprintf("Sets VIRT_ADDR's mapping's permissions to PERMS (in hex)\n");
- cprintf("Only affects the lowest level PTE. To adjust the PDE, do the math.\n");
- cprintf("Be careful with this around UVPT, VPT, and friends.\n");
- cprintf("Usage: setmapperm VIRT_ADDR PERMS\n");
- return 1;
- }
- pde_t*COUNT(PTSIZE) pgdir = (pde_t*COUNT(PTSIZE))vpd;
- pte_t *pte, *pde;
- page_t* page;
- uintptr_t va;
- va = ROUNDDOWN(strtol(argv[1], 0, 16), PGSIZE);
- page = page_lookup(pgdir, (void*SNT)va, &pte);
- if (!page) {
- cprintf("No such mapping\n");
- return 1;
- }
- pde = &pgdir[PDX(va)];
- cprintf(" Virtual Physical Ps Dr Ac CD WT U W\n");
- cprintf("------------------------------------------\n");
- cprintf("%p %p %1d %1d %1d %1d %1d %1d %1d\n", va, page2pa(page),
- (*pte & PTE_PS) >> 7, (*pte & PTE_D) >> 6, (*pte & PTE_A) >> 5,
- (*pte & PTE_PCD) >> 4, (*pte & PTE_PWT) >> 3, (*pte & *pde & PTE_U) >> 2,
- (*pte & *pde & PTE_W) >> 1);
- *pte = PTE_ADDR(*pte) | (*pte & PTE_PS) |
- (PGOFF(strtol(argv[2], 0, 16)) & ~PTE_PS ) | PTE_P;
- cprintf("%p %p %1d %1d %1d %1d %1d %1d %1d\n", va, page2pa(page),
- (*pte & PTE_PS) >> 7, (*pte & PTE_D) >> 6, (*pte & PTE_A) >> 5,
- (*pte & PTE_PCD) >> 4, (*pte & PTE_PWT) >> 3, (*pte & *pde & PTE_U) >> 2,
- (*pte & *pde & PTE_W) >> 1);
- return 0;
-#endif
+ return __showmapping(argc, argv, hw_tf);
+}
+
+int mon_sm(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ return __showmapping(argc, argv, hw_tf);
+}
+
+static void print_info_handler(struct hw_trapframe *hw_tf, void *data)
+{
+ uint64_t tsc = read_tsc();
+
+ print_lock();
+ cprintf("----------------------------\n");
+ cprintf("This is Core %d\n", core_id());
+ cprintf("Timestamp = %lld\n", tsc);
+#ifdef CONFIG_X86
+ cprintf("Hardware core %d\n", hw_core_id());
+ cprintf("MTRR_DEF_TYPE = 0x%08x\n", read_msr(IA32_MTRR_DEF_TYPE));
+ cprintf("MTRR Phys0 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x200), read_msr(0x201));
+ cprintf("MTRR Phys1 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x202), read_msr(0x203));
+ cprintf("MTRR Phys2 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x204), read_msr(0x205));
+ cprintf("MTRR Phys3 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x206), read_msr(0x207));
+ cprintf("MTRR Phys4 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x208), read_msr(0x209));
+ cprintf("MTRR Phys5 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x20a), read_msr(0x20b));
+ cprintf("MTRR Phys6 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x20c), read_msr(0x20d));
+ cprintf("MTRR Phys7 Base = 0x%016llx, Mask = 0x%016llx\n",
+ read_msr(0x20e), read_msr(0x20f));
+#endif // CONFIG_X86
+ cprintf("----------------------------\n");
+ print_unlock();
+}
+
+static bool print_all_info(void)
+{
+ cprintf("\nCORE 0 asking all cores to print info:\n");
+ smp_call_function_all(print_info_handler, NULL, 0);
+ cprintf("\nDone!\n");
+ return true;
}
int mon_cpuinfo(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- cprintf("Number of CPUs detected: %d\n", num_cpus);
+ cprintf("Number of Cores detected: %d\n", num_cores);
cprintf("Calling CPU's ID: 0x%08x\n", core_id());
if (argc < 2)
- smp_call_function_self(test_print_info_handler, NULL, 0);
+ smp_call_function_self(print_info_handler, NULL, 0);
else
smp_call_function_single(strtol(argv[1], 0, 10),
- test_print_info_handler, NULL, 0);
+ print_info_handler, NULL, 0);
return 0;
}
/* Borrowed with love from http://www.geocities.com/SoHo/7373/zoo.htm
* (http://www.ascii-art.com/). Slightly modified to make it 25 lines tall.
*/
+ print_lock();
printk("\n");
printk(" .-. .-.\n");
printk(" | \\/ |\n");
printk(" \\' .\\#\n");
printk(" jgs \\ ::\\#\n");
printk(" \\ \n");
- return 0;
-}
-
-int mon_bin_ls(int argc, char **argv, struct hw_trapframe *hw_tf)
-{
- struct dirent dir = {0};
- struct file *bin_dir;
- int retval = 0;
-
- bin_dir = do_file_open("/bin", 0, 0);
- if (!bin_dir) {
- printk("No /bin directory!\n");
- return 1;
- }
- printk("Files in /bin:\n-------------------------------\n");
- do {
- retval = bin_dir->f_op->readdir(bin_dir, &dir);
- printk("%s\n", dir.d_name);
- } while (retval == 1);
- kref_put(&bin_dir->f_kref);
+ print_unlock();
return 0;
}
printk("Usage: bin_run FILENAME\n");
return 1;
}
- struct file *program;
+ struct file_or_chan *program;
int retval = 0;
- char buf[6 + MAX_FILENAME_SZ] = "/bin/"; /* /bin/ + max + \0 */
- strncpy(buf + 5, argv[1], MAX_FILENAME_SZ);
- program = do_file_open(buf, 0, 0);
+ char buf[5 + MAX_FILENAME_SZ + 1] = "/bin/"; /* /bin/ + max + \0 */
+
+ strlcpy(buf, "/bin/", sizeof(buf));
+ if (strlcat(buf, argv[1], sizeof(buf)) > sizeof(buf)) {
+ printk("Filename '%s' too long!\n", argv[1]);
+ return 1;
+ }
+ program = foc_open(buf, O_EXEC | O_READ, 0);
if (!program) {
printk("No such program!\n");
return 1;
for (int i = 0; i < argc - 1; i++)
p_argv[i] = argv[i + 1];
p_argv[argc - 1] = 0;
- char *p_envp[] = {"LD_LIBRARY_PATH=/lib", 0};
/* super ugly: we need to stash current, so that proc_create doesn't pick up
* on random processes running here and assuming they are the parent */
struct proc *old_cur = current;
current = 0;
- struct proc *p = proc_create(program, p_argv, p_envp);
+ struct proc *p = proc_create(program, p_argv, NULL);
current = old_cur;
kfree(p_argv);
proc_wakeup(p);
proc_decref(p); /* let go of the reference created in proc_create() */
- kref_put(&program->f_kref);
+ foc_decref(program);
/* Make a scheduling decision. You might not get the process you created,
* in the event there are others floating around that are runnable */
run_scheduler();
int mon_procinfo(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- int8_t irq_state = 0;
+ int verbosity = 0;
+
if (argc < 2) {
printk("Usage: procinfo OPTION\n");
- printk("\tidlecores: show idle core map\n");
printk("\tall: show all active pids\n");
- printk("\tsched: scheduler diagnostic report\n");
- printk("\tresources: show resources wanted/granted for all procs\n");
printk("\tpid NUM: show a lot of info for proc NUM\n");
printk("\tunlock: unlock the lock for the ADDR (OMG!!!)\n");
printk("\tkill NUM: destroy proc NUM\n");
return 1;
}
- if (!strcmp(argv[1], "idlecores")) {
- print_idlecoremap();
- } else if (!strcmp(argv[1], "all")) {
+ if (!strcmp(argv[1], "all")) {
print_allpids();
- } else if (!strcmp(argv[1], "sched")) {
- sched_diag();
- } else if (!strcmp(argv[1], "resources")) {
- print_all_resources();
} else if (!strcmp(argv[1], "pid")) {
- if (argc != 3) {
+ if (argc < 3) {
printk("Give me a pid number.\n");
return 1;
}
- print_proc_info(strtol(argv[2], 0, 0));
+ if (argc >= 4)
+ verbosity = strtol(argv[3], 0, 0);
+ print_proc_info(strtol(argv[2], 0, 0), verbosity);
} else if (!strcmp(argv[1], "unlock")) {
if (argc != 3) {
printk("Gimme lock address! Me want lock address!.\n");
printk("No such proc\n");
return 1;
}
- enable_irqsave(&irq_state);
proc_destroy(p);
- disable_irqsave(&irq_state);
proc_decref(p);
} else {
printk("Bad option\n");
return 0;
}
+int mon_pip(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ int verbosity = 0;
+
+ if (argc < 2) {
+ printk("Give me a pid number.\n");
+ return 1;
+ }
+ if (argc >= 3)
+ verbosity = strtol(argv[2], 0, 0);
+ print_proc_info(strtol(argv[1], 0, 0), verbosity);
+ return 0;
+}
+
+int mon_kill(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ struct proc *p;
+
+ if (argc < 2) {
+ printk("Usage: kill PID\n");
+ return 1;
+ }
+ p = pid2proc(strtol(argv[1], 0, 0));
+ if (!p) {
+ printk("No such proc\n");
+ return 1;
+ }
+ p->exitcode = 1; /* typical EXIT_FAILURE */
+ proc_destroy(p);
+ proc_decref(p);
+ return 0;
+}
+
int mon_exit(int argc, char **argv, struct hw_trapframe *hw_tf)
{
return -1;
int mon_kfunc(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- void (*func)(void *arg, ...);
+ long ret;
+ long (*func)(void *arg, ...);
if (argc < 2) {
printk("Usage: kfunc FUNCTION [arg1] [arg2] [etc]\n");
- printk("Arguments must be in hex. Can take 6 args.\n");
+ printk("Use 0x with hex arguments. Can take 6 args.\n");
return 1;
}
func = (void*)get_symbol_addr(argv[1]);
/* Not elegant, but whatever. maybe there's a better syntax, or we can do
* it with asm magic. */
switch (argc) {
- case 2: /* have to fake one arg */
- func((void*)0);
- break;
- case 3: /* the real first arg */
- func((void*)strtol(argv[2], 0, 16));
- break;
- case 4:
- func((void*)strtol(argv[2], 0, 16),
- strtol(argv[3], 0, 16));
- break;
- case 5:
- func((void*)strtol(argv[2], 0, 16),
- strtol(argv[3], 0, 16),
- strtol(argv[4], 0, 16));
- break;
- case 6:
- func((void*)strtol(argv[2], 0, 16),
- strtol(argv[3], 0, 16),
- strtol(argv[4], 0, 16),
- strtol(argv[5], 0, 16));
- break;
- case 7:
- func((void*)strtol(argv[2], 0, 16),
- strtol(argv[3], 0, 16),
- strtol(argv[4], 0, 16),
- strtol(argv[5], 0, 16),
- strtol(argv[6], 0, 16));
- break;
- case 8:
- func((void*)strtol(argv[2], 0, 16),
- strtol(argv[3], 0, 16),
- strtol(argv[4], 0, 16),
- strtol(argv[5], 0, 16),
- strtol(argv[6], 0, 16),
- strtol(argv[7], 0, 16));
- break;
- default:
- printk("Bad number of arguments.\n");
- return -1;
+ case 2: /* have to fake one arg */
+ ret = func((void*)0);
+ break;
+ case 3: /* the real first arg */
+ ret = func((void*)strtol(argv[2], 0, 0));
+ break;
+ case 4:
+ ret = func((void*)strtol(argv[2], 0, 0),
+ strtol(argv[3], 0, 0));
+ break;
+ case 5:
+ ret = func((void*)strtol(argv[2], 0, 0),
+ strtol(argv[3], 0, 0),
+ strtol(argv[4], 0, 0));
+ break;
+ case 6:
+ ret = func((void*)strtol(argv[2], 0, 0),
+ strtol(argv[3], 0, 0),
+ strtol(argv[4], 0, 0),
+ strtol(argv[5], 0, 0));
+ break;
+ case 7:
+ ret = func((void*)strtol(argv[2], 0, 0),
+ strtol(argv[3], 0, 0),
+ strtol(argv[4], 0, 0),
+ strtol(argv[5], 0, 0),
+ strtol(argv[6], 0, 0));
+ break;
+ case 8:
+ ret = func((void*)strtol(argv[2], 0, 0),
+ strtol(argv[3], 0, 0),
+ strtol(argv[4], 0, 0),
+ strtol(argv[5], 0, 0),
+ strtol(argv[6], 0, 0),
+ strtol(argv[7], 0, 0));
+ break;
+ default:
+ printk("Bad number of arguments.\n");
+ return -1;
}
+ printk("%s (might have) returned %p\n", argv[1], ret);
return 0;
}
{
uint64_t begin = 0, diff = 0;
uint32_t end_refcnt = 0;
- int8_t irq_state = 0;
if (argc < 2) {
printk("Usage: measure OPTION\n");
printk("Warning: this will be inaccurate due to the appserver.\n");
end_refcnt = kref_refcnt(&p->p_kref) - p->procinfo->num_vcores - 1;
#endif /* CONFIG_APPSERVER */
- enable_irqsave(&irq_state);
proc_destroy(p);
- disable_irqsave(&irq_state);
proc_decref(p);
#ifdef CONFIG_APPSERVER
/* Won't be that accurate, since it's not actually going through the
* __proc_free() path. */
- spin_on(kref_refcnt(&p->p_kref) != end_refcnt);
+ spin_on(kref_refcnt(&p->p_kref) != end_refcnt);
#else
/* this is a little ghetto. it's not fully free yet, but we are also
* slowing it down by messing with it, esp with the busy waiting on a
return 0;
}
-/* Used in various debug locations. Not a kernel API or anything. */
-bool mon_verbose_trace = FALSE;
+static bool mon_verbose_trace = FALSE;
+static DEFINE_PERCPU(bool, mon_nmi_trace);
+
+static void emit_hwtf_backtrace(struct hw_trapframe *hw_tf)
+{
+ if (mon_verbose_trace) {
+ printk("\n");
+ print_trapframe(hw_tf);
+ backtrace_hwtf(hw_tf);
+ }
+ printk("Core %d is at %p (%s)\n", core_id(), get_hwtf_pc(hw_tf),
+ get_fn_name(get_hwtf_pc(hw_tf)));
+}
+
+static void emit_vmtf_backtrace(struct vm_trapframe *vm_tf)
+{
+ if (mon_verbose_trace) {
+ printk("\n");
+ print_vmtrapframe(vm_tf);
+ }
+ printk("Core %d is at %p\n", core_id(), get_vmtf_pc(vm_tf));
+}
+
+/* This is dangerous and could cause a deadlock, since it runs in NMI context.
+ * It's only for monitor debugging, so YMMV. We pass the type since the kernel
+ * doesn't deal in contexts (yet) */
+void emit_monitor_backtrace(int type, void *tf)
+{
+ if (!PERCPU_VAR(mon_nmi_trace))
+ return;
+ /* To prevent a spew of output during a lot of perf NMIs, we'll turn off the
+ * monitor output as soon as any NMI hits our core. */
+ PERCPU_VAR(mon_nmi_trace) = FALSE;
+ print_lock();
+ if (type == ROS_HW_CTX)
+ emit_hwtf_backtrace((struct hw_trapframe*)tf);
+ else
+ emit_vmtf_backtrace((struct vm_trapframe*)tf);
+ print_kmsgs(core_id());
+ print_unlock();
+}
+
int mon_trace(int argc, char **argv, struct hw_trapframe *hw_tf)
{
int core;
if (argc < 2) {
printk("Usage: trace OPTION\n");
- printk("\tsyscall start [silent] [pid]: starts tracing\n");
- printk("\tsyscall stop: stops tracing, prints if it was silent\n");
+ printk("\tsyscall start [silent (0 or non-zero, NOT the word silent)] [pid]: starts tracing\n");
+ printk("\tsyscall stop: stops tracing.\n");
printk("\tcoretf COREID: prints PC, -1 for all cores, verbose => TF\n");
printk("\tpcpui [type [coreid]]: runs pcpui trace ring handlers\n");
printk("\tpcpui-reset [noclear]: resets/clears pcpui trace ring\n");
return 1;
}
if (!strcmp(argv[2], "start")) {
- bool all = TRUE;
- bool silent = FALSE;
- struct proc *p = NULL;
- if (argc >= 4) {
- silent = (bool)strtol(argv[3], 0, 0);
- }
- if (argc >= 5) {
- all = FALSE;
- p = pid2proc(strtol(argv[4], 0, 0));
- if (!p) {
- printk("No such process\n");
- return 1;
- }
- }
- systrace_start(silent);
- if (systrace_reg(all, p))
- printk("No room to trace more processes\n");
+ systrace_loud = TRUE;
} else if (!strcmp(argv[2], "stop")) {
- /* Stop and print for all processes */
- systrace_stop();
- systrace_print(TRUE, 0);
- systrace_clear_buffer();
+ systrace_loud = FALSE;
+ } else {
+ printk("Need a start or stop.\n");
+ return 1;
}
} else if (!strcmp(argv[1], "coretf")) {
if (argc != 3) {
core = strtol(argv[2], 0, 0);
if (core < 0) {
printk("Sending NMIs to all cores:\n");
- for (int i = 0; i < num_cpus; i++)
+ for (int i = 0; i < num_cores; i++) {
+ _PERCPU_VAR(mon_nmi_trace, i) = TRUE;
send_nmi(i);
+ udelay(1000000);
+ }
} else {
printk("Sending NMI core %d:\n", core);
- if (core >= num_cpus) {
+ if (core >= num_cores) {
printk("No such core! Maybe it's in another cell...\n");
return 1;
}
+ _PERCPU_VAR(mon_nmi_trace, core) = TRUE;
send_nmi(core);
}
udelay(1000000);
pcpui_type = 0;
printk("\nRunning PCPUI Trace Ring handlers for type %d\n", pcpui_type);
if (argc >= 4) {
- pcpui_coreid = strtol(argv[3], 0, 0);
+ pcpui_coreid = strtol(argv[3], 0, 0);
pcpui_tr_foreach(pcpui_coreid, pcpui_type);
} else {
pcpui_tr_foreach_all(pcpui_type);
printk("ERRRRRRRRRR.\n");
return 1;
}
- print_proc_info(strtol(argv[2], 0, 0));
+ print_proc_info(strtol(argv[2], 0, 0), 0);
} else {
printk("Bad option\n");
return 1;
return 1;
}
uint32_t core = strtol(argv[1], 0, 0);
- if (core >= num_cpus) {
+ if (core >= num_cores) {
printk("No such core! Maybe it's in another cell...\n");
return 1;
}
#define WHITESPACE "\t\r\n "
#define MAXARGS 16
-static int runcmd(char *NTS real_buf, struct hw_trapframe *hw_tf) {
- char * buf = NTEXPAND(real_buf);
+
+int onecmd(int argc, char *argv[], struct hw_trapframe *hw_tf) {
+ int i;
+ if (!argc)
+ return -1;
+ for (i = 0; i < NCOMMANDS; i++) {
+ if (strcmp(argv[0], commands[i].name) == 0)
+ return commands[i].func(argc, argv, hw_tf);
+ }
+ return -1;
+}
+
+void __run_mon(uint32_t srcid, long a0, long a1, long a2)
+{
+ monitor(0);
+}
+
+static int runcmd(char *real_buf, struct hw_trapframe *hw_tf) {
+ char * buf = real_buf;
int argc;
- char *NTS argv[MAXARGS];
+ char *argv[MAXARGS];
int i;
// Parse the command buffer into whitespace-separated arguments
argc = 0;
argv[argc] = 0;
+ /* Discard initial 'm ', which is a common mistake when using 'm' a lot */
+ if ((buf[0] == 'm') && (buf[1] == ' '))
+ buf += 2;
while (1) {
// gobble whitespace
while (*buf && strchr(WHITESPACE, *buf))
}
}
-int mon_fs(int argc, char **argv, struct hw_trapframe *hw_tf)
-{
- /* this assumes one mounted FS at the NS root */
- struct super_block *sb;
- struct file *file;
- struct inode *inode;
- struct dentry *dentry;
- if (argc < 2) {
- printk("Usage: fs OPTION\n");
- printk("\topen: show all open files\n");
- printk("\tinodes: show all inodes\n");
- printk("\tdentries [lru|prune]: show all dentries, opt LRU/prune\n");
- printk("\tls DIR: print the dir tree starting with DIR\n");
- printk("\tpid: proc PID's fs crap placeholder\n");
- return 1;
- }
- if (!strcmp(argv[1], "open")) {
- printk("Open Files:\n----------------------------\n");
- TAILQ_FOREACH(sb, &super_blocks, s_list) {
- printk("Superblock for %s\n", sb->s_name);
- TAILQ_FOREACH(file, &sb->s_files, f_list)
- printk("File: %p, %s, Refs: %d, Drefs: %d, Irefs: %d\n", file,
- file_name(file), kref_refcnt(&file->f_kref),
- kref_refcnt(&file->f_dentry->d_kref),
- kref_refcnt(&file->f_dentry->d_inode->i_kref));
- }
- } else if (!strcmp(argv[1], "inodes")) {
- printk("Mounted FS Inodes:\n----------------------------\n");
- TAILQ_FOREACH(sb, &super_blocks, s_list) {
- printk("Superblock for %s\n", sb->s_name);
- TAILQ_FOREACH(inode, &sb->s_inodes, i_sb_list) {
- printk("Inode: %p, Refs: %d, Nlinks: %d, Size(B): %d\n",
- inode, kref_refcnt(&inode->i_kref), inode->i_nlink,
- inode->i_size);
- TAILQ_FOREACH(dentry, &inode->i_dentry, d_alias)
- printk("\t%s: Dentry: %p, Refs: %d\n",
- dentry->d_name.name, dentry,
- kref_refcnt(&dentry->d_kref));
- }
- }
- } else if (!strcmp(argv[1], "dentries")) {
- printk("Dentry Cache:\n----------------------------\n");
- TAILQ_FOREACH(sb, &super_blocks, s_list) {
- printk("Superblock for %s\n", sb->s_name);
- printk("DENTRY FLAGS REFCNT NAME\n");
- printk("--------------------------------\n");
- /* Hash helper */
- void print_dcache_entry(void *item)
- {
- struct dentry *d_i = (struct dentry*)item;
- printk("%p %p %02d %s\n", d_i, d_i->d_flags,
- kref_refcnt(&d_i->d_kref), d_i->d_name.name);
- }
- hash_for_each(sb->s_dcache, print_dcache_entry);
- }
- if (argc < 3)
- return 0;
- if (!strcmp(argv[2], "lru")) {
- printk("LRU lists:\n");
- TAILQ_FOREACH(sb, &super_blocks, s_list) {
- printk("Superblock for %s\n", sb->s_name);
- TAILQ_FOREACH(dentry, &sb->s_lru_d, d_lru)
- printk("Dentry: %p, Name: %s\n", dentry,
- dentry->d_name.name);
- }
- } else if (!strcmp(argv[2], "prune")) {
- printk("Pruning unused dentries\n");
- TAILQ_FOREACH(sb, &super_blocks, s_list)
- dcache_prune(sb, FALSE);
- }
- } else if (!strcmp(argv[1], "ls")) {
- if (argc != 3) {
- printk("Give me a dir.\n");
- return 1;
- }
- if (argv[2][0] != '/') {
- printk("Dear fellow giraffe lover, Use absolute paths.\n");
- return 1;
- }
- ls_dash_r(argv[2]);
- /* whatever. placeholder. */
- } else if (!strcmp(argv[1], "pid")) {
- if (argc != 3) {
- printk("Give me a pid number.\n");
- return 1;
- }
- /* whatever. placeholder. */
- } else {
- printk("Bad option\n");
- return 1;
- }
- return 0;
-}
-
-int mon_bb(int argc, char **argv, struct hw_trapframe *hw_tf)
+int mon_shell(int argc, char **argv, struct hw_trapframe *hw_tf)
{
- char *l_argv[3] = {"", "busybox", "ash"};
- return mon_bin_run(3, l_argv, hw_tf);
+ char *l_argv[2] = {"/bin/bash", "bash"};
+ return mon_bin_run(2, l_argv, hw_tf);
}
int mon_alarm(int argc, char **argv, struct hw_trapframe *hw_tf)
uint32_t msr = *(uint32_t *)v;
val = read_msr(msr);
printk("%d: %08x: %016llx\n", core, msr, val);
- val = read_msr(msr);
- printk("After write: %08x: %016llx\n", msr, val);
-
}
struct set {
struct set *s = v;
uint32_t msr = s->msr;
uint64_t val = s->val;
- val = read_msr(msr);
- printk("%d: %08x: %016llx\n", core, msr, val);
write_msr(msr, val);
val = read_msr(msr);
printk("%d: %08x: %016llx\n", core, msr, val);
return 0;
#endif
}
+
+int mon_db(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ pid_t pid = -1;
+
+ if (argc < 2) {
+ printk("Usage: db OPTION\n");
+ printk("\tblk [PID]: print all blocked kthreads\n");
+ printk("\taddr PID 0xADDR: for PID lookup ADDR's file/vmr info\n");
+ return 1;
+ }
+ if (!strcmp(argv[1], "blk") || !strcmp(argv[1], "sem")) {
+ if (argc > 2)
+ pid = strtol(argv[2], 0, 0);
+ print_db_blk_info(pid);
+ } else if (!strcmp(argv[1], "addr")) {
+ if (argc < 4) {
+ printk("Usage: db addr PID 0xADDR\n");
+ return 1;
+ }
+ debug_addr_pid(strtol(argv[2], 0, 10), strtol(argv[3], 0, 16));
+ } else {
+ printk("Bad option\n");
+ return 1;
+ }
+ return 0;
+}
+
+int mon_px(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ pid_t pid = 0;
+ struct proc *p;
+
+ if (argc == 2)
+ pid = strtol(argv[1], 0, 0);
+ if (!pid) {
+ set_printx(2);
+ printk("Printxing is now %sabled\n", printx_on ? "en" : "dis");
+ return 0;
+ }
+ p = pid2proc(pid);
+ if (!p) {
+ printk("No proc with pid %d\n", pid);
+ return 1;
+ }
+ p->procdata->printx_on = !p->procdata->printx_on;
+ proc_decref(p);
+ return 0;
+}
+
+/* Super hack. Given a kernel hw_tf, we hack the RIP to smp_idle, then return
+ * to it. Any locks or other stuff being done is completely lost, so you could
+ * deadlock. This gets out of the "we're totall screwed, but don't want to
+ * reboot right now", typically caused by screw-ups from the monitor. */
+int mon_kpfret(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ struct per_cpu_info *pcpui = &per_cpu_info[core_id()];
+
+ /* if monitor had a TF, try to use that */
+ if (!hw_tf) {
+ if (argc < 2) {
+ printk("Usage: kpfret HW_TF\n");
+ return 1;
+ }
+ /* the hw_tf passed in is the one we got from monitor, which is 0 from
+ * panics. */
+ hw_tf = (struct hw_trapframe*)strtol(argv[1], 0, 16);
+ }
+
+ if (!in_kernel(hw_tf)) {
+ printk("hw_tf %p was not a kernel tf!\n", hw_tf);
+ return -1;
+ }
+
+#ifdef CONFIG_X86
+ hw_tf->tf_rip = (uintptr_t)smp_idle;
+ dec_ktrap_depth(pcpui);
+
+ asm volatile("mov %0, %%rsp;"
+ "addq $0x10, %%rsp;"
+ "popq %%rax;"
+ "popq %%rbx;"
+ "popq %%rcx;"
+ "popq %%rdx;"
+ "popq %%rbp;"
+ "popq %%rsi;"
+ "popq %%rdi;"
+ "popq %%r8;"
+ "popq %%r9;"
+ "popq %%r10;"
+ "popq %%r11;"
+ "popq %%r12;"
+ "popq %%r13;"
+ "popq %%r14;"
+ "popq %%r15;"
+ "addq $0x10, %%rsp;"
+ "iretq;"
+ : : "r"(hw_tf));
+ assert(0);
+#else
+ printk("KPF return not supported\n");
+ return -1;
+#endif /* CONFIG_X86 */
+}
+
+int mon_ks(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ if (argc < 2) {
+usage:
+ printk("Usage: ks OPTION\n");
+ printk("\tidles: show idle core map\n");
+ printk("\tdiag: scheduler diagnostic report\n");
+ printk("\tresources: show resources wanted/granted for all procs\n");
+ printk("\tsort: sorts the idlecoremap, 1..n\n");
+ printk("\tnc PCOREID: sets the next CG core allocated\n");
+ return 1;
+ }
+ if (!strcmp(argv[1], "idles")) {
+ print_idle_core_map();
+ } else if (!strcmp(argv[1], "diag")) {
+ sched_diag();
+ } else if (!strcmp(argv[1], "resources")) {
+ print_all_resources();
+ } else if (!strcmp(argv[1], "sort")) {
+ sort_idle_cores();
+ } else if (!strcmp(argv[1], "nc")) {
+ if (argc != 3) {
+ printk("Need a pcore number.\n");
+ return 1;
+ }
+ next_core_to_alloc(strtol(argv[2], 0, 0));
+ } else {
+ printk("Bad option %s\n", argv[1]);
+ goto usage;
+ }
+ return 0;
+}
+
+/* Prints info about a core. Optional first arg == coreid. */
+int mon_coreinfo(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ struct per_cpu_info *pcpui;
+ struct kthread *kth;
+ int coreid = core_id();
+
+ if (argc >= 2)
+ coreid = strtol(argv[1], 0, 0);
+ pcpui = &per_cpu_info[coreid];
+ printk("Core %d:\n\tcur_proc %d\n\towning proc %d, owning vc %d\n",
+ coreid, pcpui->cur_proc ? pcpui->cur_proc->pid : 0,
+ pcpui->owning_proc ? pcpui->owning_proc->pid : 0,
+ pcpui->owning_vcoreid != 0xdeadbeef ? pcpui->owning_vcoreid : 0);
+ kth = pcpui->cur_kthread;
+ if (kth) {
+ /* kth->proc is only used when the kthread is sleeping. when it's
+ * running, we care about cur_proc. if we're here, proc should be 0
+ * unless the kth is concurrently sleeping (we called this remotely) */
+ printk("\tkthread %p (%s), sysc %p (%d)\n", kth, kth->name,
+ kth->sysc, kth->sysc ? kth->sysc->num : -1);
+ } else {
+ /* Can happen during early boot */
+ printk("\tNo kthread!\n");
+ }
+ return 0;
+}
+
+int mon_hexdump(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ struct proc *p = NULL;
+ uintptr_t switch_state;
+ pid_t pid;
+ uintptr_t start;
+ size_t len;
+
+ assert(argc >= 1);
+ if (argc < 4) {
+ printk("Usage: %s PID ADDR LEN\n", argv[0]);
+ printk(" PID == 0 for kernel / don't care\n");
+ return 1;
+ }
+ pid = strtol(argv[1], 0, 0);
+ start = strtoul(argv[2], 0, 0);
+ len = strtoul(argv[3], 0, 0);
+ if (pid) {
+ p = pid2proc(pid);
+ if (!p) {
+ printk("No proc with pid %d\n", pid);
+ return 1;
+ }
+ switch_state = switch_to(p);
+ }
+ hexdump((void*)start, len);
+ if (p) {
+ switch_back(p, switch_state);
+ proc_decref(p);
+ }
+ return 0;
+}
+
+int mon_pahexdump(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ uintptr_t start;
+ size_t len;
+
+ assert(argc >= 1);
+ if (argc < 3) {
+ printk("Usage: %s PHYS_ADDR LEN\n", argv[0]);
+ return 1;
+ }
+ start = strtoul(argv[1], 0, 0);
+ len = strtoul(argv[2], 0, 0);
+ pahexdump(start, len);
+ return 0;
+}
+
+int mon_dmesg(int argc, char **argv, struct hw_trapframe *hw_tf)
+{
+ kprof_dump_data();
+ return 0;
+}
projects / akaros.git / blobdiff