X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fproc%2Farray.c;h=2407c83baee4d633a3e930fb0face803ddd29502;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=bf42e97566a480e3dbbc1dca62ecebc2b1d4b5ba;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git diff --git a/fs/proc/array.c b/fs/proc/array.c index bf42e9756..2407c83ba 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -52,7 +52,6 @@ * : base.c too. */ -#include #include #include #include @@ -73,15 +72,18 @@ #include #include #include -#include +#include +#include +#include +#include #include #include -#include #include #include #include #include +#include "internal.h" /* Gcc optimizes away "strlen(x)" for constant x */ #define ADDBUF(buffer, string) \ @@ -92,10 +94,13 @@ static inline char * task_name(struct task_struct *p, char * buf) { int i; char * name; + char tcomm[sizeof(p->comm)]; + + get_task_comm(tcomm, p); ADDBUF(buf, "Name:\t"); - name = p->comm; - i = sizeof(p->comm); + name = tcomm; + i = sizeof(tcomm); do { unsigned char c = *name; name++; @@ -131,19 +136,22 @@ static const char *task_state_array[] = { "S (sleeping)", /* 1 */ "D (disk sleep)", /* 2 */ "T (stopped)", /* 4 */ - "Z (zombie)", /* 8 */ - "X (dead)", /* 16 */ - "H (on hold)" /* 32 */ + "T (tracing stop)", /* 8 */ + "H (on hold)", /* 16 */ + "Z (zombie)", /* 32 */ + "X (dead)", /* 64 */ }; static inline const char * get_task_state(struct task_struct *tsk) { - unsigned int state = tsk->state & (TASK_RUNNING | - TASK_INTERRUPTIBLE | - TASK_UNINTERRUPTIBLE | - TASK_ZOMBIE | - TASK_STOPPED | - TASK_ONHOLD); + unsigned int state = (tsk->state & (TASK_RUNNING | + TASK_INTERRUPTIBLE | + TASK_UNINTERRUPTIBLE | + TASK_STOPPED | + TASK_TRACED | + TASK_ONHOLD)) | + (tsk->exit_state & (EXIT_ZOMBIE | + EXIT_DEAD)); const char **p = &task_state_array[0]; while (state) { @@ -155,12 +163,20 @@ static inline const char * get_task_state(struct task_struct *tsk) static inline char * task_state(struct task_struct *p, char *buffer) { + struct task_struct *tracer; + pid_t pid, ptgid, tracer_pid, tgid; struct group_info *group_info; int g; - pid_t ppid; + struct fdtable *fdt = NULL; + + rcu_read_lock(); + tracer = tracehook_tracer_task(p); + tracer_pid = tracer == NULL ? 0 : tracer->pid; + tgid = vx_map_tgid(p->tgid); + pid = vx_map_pid(p->pid); + ptgid = vx_map_pid(pid_alive(p) ? + rcu_dereference(p->parent)->tgid : 0); - read_lock(&tasklist_lock); - ppid = vx_map_tgid(current->vx_info, p->real_parent->pid); buffer += sprintf(buffer, "State:\t%s\n" "SleepAVG:\t%lu%%\n" @@ -172,17 +188,19 @@ static inline char * task_state(struct task_struct *p, char *buffer) "Gid:\t%d\t%d\t%d\t%d\n", get_task_state(p), (p->sleep_avg/1024)*100/(1020000000/1024), - p->tgid, - p->pid, p->pid ? ppid : 0, - p->pid && p->ptrace ? p->parent->pid : 0, + tgid, pid, (pid > 1) ? ptgid : 0, + tracer_pid, p->uid, p->euid, p->suid, p->fsuid, p->gid, p->egid, p->sgid, p->fsgid); - read_unlock(&tasklist_lock); + task_lock(p); + if (p->files) + fdt = files_fdtable(p->files); buffer += sprintf(buffer, "FDSize:\t%d\n" "Groups:\t", - p->files ? p->files->max_fds : 0); + fdt ? fdt->max_fds : 0); + rcu_read_unlock(); group_info = p->group_info; get_group_info(group_info); @@ -238,8 +256,11 @@ static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign, static inline char * task_sig(struct task_struct *p, char *buffer) { + unsigned long flags; sigset_t pending, shpending, blocked, ignored, caught; int num_threads = 0; + unsigned long qsize = 0; + unsigned long qlim = 0; sigemptyset(&pending); sigemptyset(&shpending); @@ -247,20 +268,21 @@ static inline char * task_sig(struct task_struct *p, char *buffer) sigemptyset(&ignored); sigemptyset(&caught); - /* Gather all the data with the appropriate locks held */ - read_lock(&tasklist_lock); - if (p->sighand) { - spin_lock_irq(&p->sighand->siglock); + rcu_read_lock(); + if (lock_task_sighand(p, &flags)) { pending = p->pending.signal; shpending = p->signal->shared_pending.signal; blocked = p->blocked; collect_sigign_sigcatch(p, &ignored, &caught); num_threads = atomic_read(&p->signal->count); - spin_unlock_irq(&p->sighand->siglock); + qsize = atomic_read(&p->user->sigpending); + qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur; + unlock_task_sighand(p, &flags); } - read_unlock(&tasklist_lock); + rcu_read_unlock(); buffer += sprintf(buffer, "Threads:\t%d\n", num_threads); + buffer += sprintf(buffer, "SigQ:\t%lu/%lu\n", qsize, qlim); /* render them all */ buffer = render_sigset_t("SigPnd:\t", &pending, buffer); @@ -274,20 +296,24 @@ static inline char * task_sig(struct task_struct *p, char *buffer) static inline char *task_cap(struct task_struct *p, char *buffer) { - return buffer + sprintf(buffer, "CapInh:\t%016x\n" - "CapPrm:\t%016x\n" - "CapEff:\t%016x\n", - cap_t(p->cap_inheritable), - cap_t(p->cap_permitted), - cap_t(p->cap_effective)); + struct vx_info *vxi = p->vx_info; + + return buffer + sprintf(buffer, + "CapInh:\t%016x\n" + "CapPrm:\t%016x\n" + "CapEff:\t%016x\n", + (unsigned)vx_info_mbcap(vxi, p->cap_inheritable), + (unsigned)vx_info_mbcap(vxi, p->cap_permitted), + (unsigned)vx_info_mbcap(vxi, p->cap_effective)); } -extern char *task_mem(struct mm_struct *, char *); int proc_pid_status(struct task_struct *task, char * buffer) { char * orig = buffer; -#ifdef CONFIG_VSERVER_LEGACY +#ifdef CONFIG_VSERVER_LEGACY struct vx_info *vxi; +#endif +#ifdef CONFIG_VSERVER_LEGACYNET struct nx_info *nxi; #endif struct mm_struct *mm = get_task_mm(task); @@ -301,8 +327,11 @@ int proc_pid_status(struct task_struct *task, char * buffer) } buffer = task_sig(task, buffer); buffer = task_cap(task, buffer); + buffer = cpuset_task_status_allowed(task, buffer); -#ifdef CONFIG_VSERVER_LEGACY + if (task_vx_flags(task, VXF_HIDE_VINFO, 0)) + goto skip; +#ifdef CONFIG_VSERVER_LEGACY buffer += sprintf (buffer,"s_context: %d\n", vx_task_xid(task)); vxi = task_get_vx_info(task); if (vxi) { @@ -315,6 +344,10 @@ int proc_pid_status(struct task_struct *task, char * buffer) buffer += sprintf (buffer,"initpid: none\n"); } put_vx_info(vxi); +#else + buffer += sprintf (buffer,"VxID: %d\n", vx_task_xid(task)); +#endif +#ifdef CONFIG_VSERVER_LEGACYNET nxi = task_get_nx_info(task); if (nxi) { int i; @@ -334,89 +367,133 @@ int proc_pid_status(struct task_struct *task, char * buffer) } put_nx_info(nxi); #endif -#if defined(CONFIG_ARCH_S390) +skip: +#if defined(CONFIG_S390) buffer = task_show_regs(task, buffer); #endif return buffer - orig; } -extern unsigned long task_vsize(struct mm_struct *); -int proc_pid_stat(struct task_struct *task, char * buffer) +static int do_task_stat(struct task_struct *task, char * buffer, int whole) { - unsigned long vsize, eip, esp, wchan; + unsigned long vsize, eip, esp, wchan = ~0UL; long priority, nice; - unsigned long long bias_jiffies; int tty_pgrp = -1, tty_nr = 0; sigset_t sigign, sigcatch; char state; int res; - pid_t ppid, pgid = -1, sid = -1; + pid_t pid = 0, ppid = 0, pgid = -1, sid = -1; int num_threads = 0; struct mm_struct *mm; unsigned long long start_time; + unsigned long cmin_flt = 0, cmaj_flt = 0; + unsigned long min_flt = 0, maj_flt = 0; + cputime_t cutime, cstime, utime, stime; + unsigned long rsslim = 0; + char tcomm[sizeof(task->comm)]; + unsigned long flags; state = *get_task_state(task); vsize = eip = esp = 0; - bias_jiffies = INITIAL_JIFFIES; - - task_lock(task); - if (__vx_task_flags(task, VXF_VIRT_UPTIME, 0)) { - bias_jiffies = task->vx_info->cvirt.bias_jiffies; - /* hmm, do we need that? */ - if (bias_jiffies > task->start_time) - bias_jiffies = task->start_time; - } - - mm = task->mm; - if(mm) - mm = mmgrab(mm); - task_unlock(task); + mm = get_task_mm(task); if (mm) { - down_read(&mm->mmap_sem); vsize = task_vsize(mm); eip = KSTK_EIP(task); esp = KSTK_ESP(task); - up_read(&mm->mmap_sem); } - wchan = get_wchan(task); + get_task_comm(tcomm, task); sigemptyset(&sigign); sigemptyset(&sigcatch); - read_lock(&tasklist_lock); - if (task->sighand) { - spin_lock_irq(&task->sighand->siglock); - num_threads = atomic_read(&task->signal->count); + cutime = cstime = utime = stime = cputime_zero; + + rcu_read_lock(); + if (lock_task_sighand(task, &flags)) { + struct signal_struct *sig = task->signal; + + if (sig->tty) { + tty_pgrp = sig->tty->pgrp; + tty_nr = new_encode_dev(tty_devnum(sig->tty)); + } + + num_threads = atomic_read(&sig->count); collect_sigign_sigcatch(task, &sigign, &sigcatch); - spin_unlock_irq(&task->sighand->siglock); - } - if (task->signal) { - if (task->signal->tty) { - tty_pgrp = task->signal->tty->pgrp; - tty_nr = new_encode_dev(tty_devnum(task->signal->tty)); + + cmin_flt = sig->cmin_flt; + cmaj_flt = sig->cmaj_flt; + cutime = sig->cutime; + cstime = sig->cstime; + rsslim = sig->rlim[RLIMIT_RSS].rlim_cur; + + /* add up live thread stats at the group level */ + if (whole) { + struct task_struct *t = task; + do { + min_flt += t->min_flt; + maj_flt += t->maj_flt; + utime = cputime_add(utime, t->utime); + stime = cputime_add(stime, t->stime); + t = next_thread(t); + } while (t != task); + + min_flt += sig->min_flt; + maj_flt += sig->maj_flt; + utime = cputime_add(utime, sig->utime); + stime = cputime_add(stime, sig->stime); } - pgid = process_group(task); - sid = task->signal->session; + + sid = signal_session(sig); + pid = vx_info_map_pid(task->vx_info, task->pid); + pgid = vx_info_map_pid(task->vx_info, process_group(task)); + ppid = (pid > 1) ? vx_info_map_tgid(task->vx_info, + rcu_dereference(task->parent)->tgid) : 0; + + unlock_task_sighand(task, &flags); + } + rcu_read_unlock(); + + if (!whole || num_threads<2) { + wchan = 0; + if (current->uid == task->uid || current->euid == task->uid || + capable(CAP_SYS_NICE)) + wchan = get_wchan(task); + } + if (!whole) { + min_flt = task->min_flt; + maj_flt = task->maj_flt; + utime = task->utime; + stime = task->stime; } - read_unlock(&tasklist_lock); /* scale priority and nice values from timeslices to -20..20 */ /* to make it look like a "normal" Unix priority/nice value */ priority = task_prio(task); nice = task_nice(task); - read_lock(&tasklist_lock); - ppid = task->pid ? task->real_parent->pid : 0; - read_unlock(&tasklist_lock); - /* Temporary variable needed for gcc-2.96 */ - start_time = jiffies_64_to_clock_t(task->start_time - bias_jiffies); + /* convert timespec -> nsec*/ + start_time = (unsigned long long)task->start_time.tv_sec * NSEC_PER_SEC + + task->start_time.tv_nsec; + /* convert nsec -> ticks */ + start_time = nsec_to_clock_t(start_time); + + /* fixup start time for virt uptime */ + if (vx_flags(VXF_VIRT_UPTIME, 0)) { + unsigned long long bias = + current->vx_info->cvirt.bias_clock; + + if (start_time > bias) + start_time -= bias; + else + start_time = 0; + } res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \ -%lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu \ -%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n", - task->pid, - task->comm, +%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \ +%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu %llu\n", + pid, + tcomm, state, ppid, pgid, @@ -424,22 +501,21 @@ int proc_pid_stat(struct task_struct *task, char * buffer) tty_nr, tty_pgrp, task->flags, - task->min_flt, - task->cmin_flt, - task->maj_flt, - task->cmaj_flt, - jiffies_to_clock_t(task->utime), - jiffies_to_clock_t(task->stime), - jiffies_to_clock_t(task->cutime), - jiffies_to_clock_t(task->cstime), + min_flt, + cmin_flt, + maj_flt, + cmaj_flt, + cputime_to_clock_t(utime), + cputime_to_clock_t(stime), + cputime_to_clock_t(cutime), + cputime_to_clock_t(cstime), priority, nice, num_threads, - jiffies_to_clock_t(task->it_real_value), start_time, vsize, - mm ? mm->rss : 0, /* you might want to shift this left 3 */ - task->rlim[RLIMIT_RSS].rlim_cur, + mm ? get_mm_rss(mm) : 0, + rsslim, mm ? mm->start_code : 0, mm ? mm->end_code : 0, mm ? mm->start_stack : 0, @@ -459,23 +535,30 @@ int proc_pid_stat(struct task_struct *task, char * buffer) task->exit_signal, task_cpu(task), task->rt_priority, - task->policy); + task->policy, + (unsigned long long)delayacct_blkio_ticks(task)); if(mm) mmput(mm); return res; } -extern int task_statm(struct mm_struct *, int *, int *, int *, int *); +int proc_tid_stat(struct task_struct *task, char * buffer) +{ + return do_task_stat(task, buffer, 0); +} + +int proc_tgid_stat(struct task_struct *task, char * buffer) +{ + return do_task_stat(task, buffer, 1); +} + int proc_pid_statm(struct task_struct *task, char *buffer) { int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0; struct mm_struct *mm = get_task_mm(task); if (mm) { - down_read(&mm->mmap_sem); size = task_statm(mm, &shared, &text, &data, &resident); - up_read(&mm->mmap_sem); - mmput(mm); }