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Date: Mon, 13 Apr 2009 17:48:42 +0800
From: Américo Wang <xiyou.wangcong@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Alexey Dobriyan <adobriyan@...il.com>,
Andrew Morton <akpm@...l.org>
Subject: [RFC Patch] proc: merge array.c into base.c
The last four functions in array.c can be merged into base.c, since
they are only used in base.c.
I only tested this patch in UML.
Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>
Cc: Alexey Dobriyan <adobriyan@...il.com>
---
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index 63d9651..93121c3 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -7,7 +7,7 @@ obj-$(CONFIG_PROC_FS) += proc.o
proc-y := nommu.o task_nommu.o
proc-$(CONFIG_MMU) := mmu.o task_mmu.o
-proc-y += inode.o root.o base.o generic.o array.o \
+proc-y += inode.o root.o base.o generic.o \
proc_tty.o
proc-y += cmdline.o
proc-y += cpuinfo.o
diff --git a/fs/proc/array.c b/fs/proc/array.c
deleted file mode 100644
index 7e4877d..0000000
--- a/fs/proc/array.c
+++ /dev/null
@@ -1,531 +0,0 @@
-/*
- * linux/fs/proc/array.c
- *
- * Copyright (C) 1992 by Linus Torvalds
- * based on ideas by Darren Senn
- *
- * Fixes:
- * Michael. K. Johnson: stat,statm extensions.
- * <johnsonm@...laf.edu>
- *
- * Pauline Middelink : Made cmdline,envline only break at '\0's, to
- * make sure SET_PROCTITLE works. Also removed
- * bad '!' which forced address recalculation for
- * EVERY character on the current page.
- * <middelin@...yware.iaf.nl>
- *
- * Danny ter Haar : added cpuinfo
- * <dth@...tron.nl>
- *
- * Alessandro Rubini : profile extension.
- * <rubini@...vis.unipv.it>
- *
- * Jeff Tranter : added BogoMips field to cpuinfo
- * <Jeff_Tranter@...el.COM>
- *
- * Bruno Haible : remove 4K limit for the maps file
- * <haible@...s2.mathematik.uni-karlsruhe.de>
- *
- * Yves Arrouye : remove removal of trailing spaces in get_array.
- * <Yves.Arrouye@...in.fdn.fr>
- *
- * Jerome Forissier : added per-CPU time information to /proc/stat
- * and /proc/<pid>/cpu extension
- * <forissier@...a.cma.fr>
- * - Incorporation and non-SMP safe operation
- * of forissier patch in 2.1.78 by
- * Hans Marcus <crowbar@...cepts.nl>
- *
- * aeb@....nl : /proc/partitions
- *
- *
- * Alan Cox : security fixes.
- * <alan@...rguk.ukuu.org.uk>
- *
- * Al Viro : safe handling of mm_struct
- *
- * Gerhard Wichert : added BIGMEM support
- * Siemens AG <Gerhard.Wichert@....siemens.de>
- *
- * Al Viro & Jeff Garzik : moved most of the thing into base.c and
- * : proc_misc.c. The rest may eventually go into
- * : base.c too.
- */
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/time.h>
-#include <linux/kernel.h>
-#include <linux/kernel_stat.h>
-#include <linux/tty.h>
-#include <linux/string.h>
-#include <linux/mman.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/pagemap.h>
-#include <linux/swap.h>
-#include <linux/slab.h>
-#include <linux/smp.h>
-#include <linux/signal.h>
-#include <linux/highmem.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/times.h>
-#include <linux/cpuset.h>
-#include <linux/rcupdate.h>
-#include <linux/delayacct.h>
-#include <linux/seq_file.h>
-#include <linux/pid_namespace.h>
-#include <linux/tracehook.h>
-
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include "internal.h"
-
-static inline void task_name(struct seq_file *m, struct task_struct *p)
-{
- int i;
- char *buf, *end;
- char *name;
- char tcomm[sizeof(p->comm)];
-
- get_task_comm(tcomm, p);
-
- seq_printf(m, "Name:\t");
- end = m->buf + m->size;
- buf = m->buf + m->count;
- name = tcomm;
- i = sizeof(tcomm);
- while (i && (buf < end)) {
- unsigned char c = *name;
- name++;
- i--;
- *buf = c;
- if (!c)
- break;
- if (c == '\\') {
- buf++;
- if (buf < end)
- *buf++ = c;
- continue;
- }
- if (c == '\n') {
- *buf++ = '\\';
- if (buf < end)
- *buf++ = 'n';
- continue;
- }
- buf++;
- }
- m->count = buf - m->buf;
- seq_printf(m, "\n");
-}
-
-/*
- * The task state array is a strange "bitmap" of
- * reasons to sleep. Thus "running" is zero, and
- * you can test for combinations of others with
- * simple bit tests.
- */
-static const char *task_state_array[] = {
- "R (running)", /* 0 */
- "S (sleeping)", /* 1 */
- "D (disk sleep)", /* 2 */
- "T (stopped)", /* 4 */
- "T (tracing stop)", /* 8 */
- "Z (zombie)", /* 16 */
- "X (dead)" /* 32 */
-};
-
-static inline const char *get_task_state(struct task_struct *tsk)
-{
- unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state;
- const char **p = &task_state_array[0];
-
- while (state) {
- p++;
- state >>= 1;
- }
- return *p;
-}
-
-static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *p)
-{
- struct group_info *group_info;
- int g;
- struct fdtable *fdt = NULL;
- const struct cred *cred;
- pid_t ppid, tpid;
-
- rcu_read_lock();
- ppid = pid_alive(p) ?
- task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
- tpid = 0;
- if (pid_alive(p)) {
- struct task_struct *tracer = tracehook_tracer_task(p);
- if (tracer)
- tpid = task_pid_nr_ns(tracer, ns);
- }
- cred = get_cred((struct cred *) __task_cred(p));
- seq_printf(m,
- "State:\t%s\n"
- "Tgid:\t%d\n"
- "Pid:\t%d\n"
- "PPid:\t%d\n"
- "TracerPid:\t%d\n"
- "Uid:\t%d\t%d\t%d\t%d\n"
- "Gid:\t%d\t%d\t%d\t%d\n",
- get_task_state(p),
- task_tgid_nr_ns(p, ns),
- pid_nr_ns(pid, ns),
- ppid, tpid,
- cred->uid, cred->euid, cred->suid, cred->fsuid,
- cred->gid, cred->egid, cred->sgid, cred->fsgid);
-
- task_lock(p);
- if (p->files)
- fdt = files_fdtable(p->files);
- seq_printf(m,
- "FDSize:\t%d\n"
- "Groups:\t",
- fdt ? fdt->max_fds : 0);
- rcu_read_unlock();
-
- group_info = cred->group_info;
- task_unlock(p);
-
- for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
- seq_printf(m, "%d ", GROUP_AT(group_info, g));
- put_cred(cred);
-
- seq_printf(m, "\n");
-}
-
-static void render_sigset_t(struct seq_file *m, const char *header,
- sigset_t *set)
-{
- int i;
-
- seq_printf(m, "%s", header);
-
- i = _NSIG;
- do {
- int x = 0;
-
- i -= 4;
- if (sigismember(set, i+1)) x |= 1;
- if (sigismember(set, i+2)) x |= 2;
- if (sigismember(set, i+3)) x |= 4;
- if (sigismember(set, i+4)) x |= 8;
- seq_printf(m, "%x", x);
- } while (i >= 4);
-
- seq_printf(m, "\n");
-}
-
-static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
- sigset_t *catch)
-{
- struct k_sigaction *k;
- int i;
-
- k = p->sighand->action;
- for (i = 1; i <= _NSIG; ++i, ++k) {
- if (k->sa.sa_handler == SIG_IGN)
- sigaddset(ign, i);
- else if (k->sa.sa_handler != SIG_DFL)
- sigaddset(catch, i);
- }
-}
-
-static inline void task_sig(struct seq_file *m, struct task_struct *p)
-{
- 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);
- sigemptyset(&blocked);
- sigemptyset(&ignored);
- sigemptyset(&caught);
-
- 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);
- qsize = atomic_read(&__task_cred(p)->user->sigpending);
- qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
- unlock_task_sighand(p, &flags);
- }
-
- seq_printf(m, "Threads:\t%d\n", num_threads);
- seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
-
- /* render them all */
- render_sigset_t(m, "SigPnd:\t", &pending);
- render_sigset_t(m, "ShdPnd:\t", &shpending);
- render_sigset_t(m, "SigBlk:\t", &blocked);
- render_sigset_t(m, "SigIgn:\t", &ignored);
- render_sigset_t(m, "SigCgt:\t", &caught);
-}
-
-static void render_cap_t(struct seq_file *m, const char *header,
- kernel_cap_t *a)
-{
- unsigned __capi;
-
- seq_printf(m, "%s", header);
- CAP_FOR_EACH_U32(__capi) {
- seq_printf(m, "%08x",
- a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
- }
- seq_printf(m, "\n");
-}
-
-static inline void task_cap(struct seq_file *m, struct task_struct *p)
-{
- const struct cred *cred;
- kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset;
-
- rcu_read_lock();
- cred = __task_cred(p);
- cap_inheritable = cred->cap_inheritable;
- cap_permitted = cred->cap_permitted;
- cap_effective = cred->cap_effective;
- cap_bset = cred->cap_bset;
- rcu_read_unlock();
-
- render_cap_t(m, "CapInh:\t", &cap_inheritable);
- render_cap_t(m, "CapPrm:\t", &cap_permitted);
- render_cap_t(m, "CapEff:\t", &cap_effective);
- render_cap_t(m, "CapBnd:\t", &cap_bset);
-}
-
-static inline void task_context_switch_counts(struct seq_file *m,
- struct task_struct *p)
-{
- seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
- "nonvoluntary_ctxt_switches:\t%lu\n",
- p->nvcsw,
- p->nivcsw);
-}
-
-int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task)
-{
- struct mm_struct *mm = get_task_mm(task);
-
- task_name(m, task);
- task_state(m, ns, pid, task);
-
- if (mm) {
- task_mem(m, mm);
- mmput(mm);
- }
- task_sig(m, task);
- task_cap(m, task);
- cpuset_task_status_allowed(m, task);
-#if defined(CONFIG_S390)
- task_show_regs(m, task);
-#endif
- task_context_switch_counts(m, task);
- return 0;
-}
-
-static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task, int whole)
-{
- unsigned long vsize, eip, esp, wchan = ~0UL;
- long priority, nice;
- int tty_pgrp = -1, tty_nr = 0;
- sigset_t sigign, sigcatch;
- char state;
- pid_t 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;
- cputime_t cgtime, gtime;
- unsigned long rsslim = 0;
- char tcomm[sizeof(task->comm)];
- unsigned long flags;
-
- state = *get_task_state(task);
- vsize = eip = esp = 0;
- mm = get_task_mm(task);
- if (mm) {
- vsize = task_vsize(mm);
- eip = KSTK_EIP(task);
- esp = KSTK_ESP(task);
- }
-
- get_task_comm(tcomm, task);
-
- sigemptyset(&sigign);
- sigemptyset(&sigcatch);
- cutime = cstime = utime = stime = cputime_zero;
- cgtime = gtime = cputime_zero;
-
- if (lock_task_sighand(task, &flags)) {
- struct signal_struct *sig = task->signal;
-
- if (sig->tty) {
- struct pid *pgrp = tty_get_pgrp(sig->tty);
- tty_pgrp = pid_nr_ns(pgrp, ns);
- put_pid(pgrp);
- tty_nr = new_encode_dev(tty_devnum(sig->tty));
- }
-
- num_threads = atomic_read(&sig->count);
- collect_sigign_sigcatch(task, &sigign, &sigcatch);
-
- cmin_flt = sig->cmin_flt;
- cmaj_flt = sig->cmaj_flt;
- cutime = sig->cutime;
- cstime = sig->cstime;
- cgtime = sig->cgtime;
- rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
-
- /* add up live thread stats at the group level */
- if (whole) {
- struct task_cputime cputime;
- struct task_struct *t = task;
- do {
- min_flt += t->min_flt;
- maj_flt += t->maj_flt;
- gtime = cputime_add(gtime, task_gtime(t));
- t = next_thread(t);
- } while (t != task);
-
- min_flt += sig->min_flt;
- maj_flt += sig->maj_flt;
- thread_group_cputime(task, &cputime);
- utime = cputime.utime;
- stime = cputime.stime;
- gtime = cputime_add(gtime, sig->gtime);
- }
-
- sid = task_session_nr_ns(task, ns);
- ppid = task_tgid_nr_ns(task->real_parent, ns);
- pgid = task_pgrp_nr_ns(task, ns);
-
- unlock_task_sighand(task, &flags);
- }
-
- if (!whole || num_threads < 2)
- wchan = get_wchan(task);
- if (!whole) {
- min_flt = task->min_flt;
- maj_flt = task->maj_flt;
- utime = task_utime(task);
- stime = task_stime(task);
- gtime = task_gtime(task);
- }
-
- /* 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);
-
- /* Temporary variable needed for gcc-2.96 */
- /* convert timespec -> nsec*/
- start_time =
- (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
- + task->real_start_time.tv_nsec;
- /* convert nsec -> ticks */
- start_time = nsec_to_clock_t(start_time);
-
- seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
-%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 %u %u %llu %lu %ld\n",
- pid_nr_ns(pid, ns),
- tcomm,
- state,
- ppid,
- pgid,
- sid,
- tty_nr,
- tty_pgrp,
- task->flags,
- 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,
- start_time,
- vsize,
- mm ? get_mm_rss(mm) : 0,
- rsslim,
- mm ? mm->start_code : 0,
- mm ? mm->end_code : 0,
- mm ? mm->start_stack : 0,
- esp,
- eip,
- /* The signal information here is obsolete.
- * It must be decimal for Linux 2.0 compatibility.
- * Use /proc/#/status for real-time signals.
- */
- task->pending.signal.sig[0] & 0x7fffffffUL,
- task->blocked.sig[0] & 0x7fffffffUL,
- sigign .sig[0] & 0x7fffffffUL,
- sigcatch .sig[0] & 0x7fffffffUL,
- wchan,
- 0UL,
- 0UL,
- task->exit_signal,
- task_cpu(task),
- task->rt_priority,
- task->policy,
- (unsigned long long)delayacct_blkio_ticks(task),
- cputime_to_clock_t(gtime),
- cputime_to_clock_t(cgtime));
- if (mm)
- mmput(mm);
- return 0;
-}
-
-int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task)
-{
- return do_task_stat(m, ns, pid, task, 0);
-}
-
-int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task)
-{
- return do_task_stat(m, ns, pid, task, 1);
-}
-
-int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task)
-{
- int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
- struct mm_struct *mm = get_task_mm(task);
-
- if (mm) {
- size = task_statm(mm, &shared, &text, &data, &resident);
- mmput(mm);
- }
- seq_printf(m, "%d %d %d %d %d %d %d\n",
- size, resident, shared, text, lib, data, 0);
-
- return 0;
-}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index f715597..8df54d4 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -45,12 +45,29 @@
*
* Paul Mundt <paul.mundt@...ia.com>:
* Overall revision about smaps.
+ *
+ * ChangeLog:
+ * 13-Apr-2009
+ * WANG Cong <xiyou.wangcong@...il.com>:
+ * Merge array.c.
*/
-#include <asm/uaccess.h>
-
+#include <linux/types.h>
#include <linux/errno.h>
#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/tty.h>
+#include <linux/mman.h>
+#include <linux/ioport.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
+#include <linux/hugetlb.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+#include <linux/highmem.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/task_io_accounting_ops.h>
@@ -73,7 +90,10 @@
#include <linux/ptrace.h>
#include <linux/tracehook.h>
#include <linux/cgroup.h>
+#include <linux/times.h>
#include <linux/cpuset.h>
+#include <linux/rcupdate.h>
+#include <linux/delayacct.h>
#include <linux/audit.h>
#include <linux/poll.h>
#include <linux/nsproxy.h>
@@ -81,6 +101,10 @@
#include <linux/elf.h>
#include <linux/pid_namespace.h>
#include <linux/fs_struct.h>
+
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+
#include "internal.h"
/* NOTE:
@@ -128,6 +152,451 @@ struct pid_entry {
NULL, &proc_single_file_operations, \
{ .proc_show = show } )
+
+static inline void task_name(struct seq_file *m, struct task_struct *p)
+{
+ int i;
+ char *buf, *end;
+ char *name;
+ char tcomm[sizeof(p->comm)];
+
+ get_task_comm(tcomm, p);
+
+ seq_printf(m, "Name:\t");
+ end = m->buf + m->size;
+ buf = m->buf + m->count;
+ name = tcomm;
+ i = sizeof(tcomm);
+ while (i && (buf < end)) {
+ unsigned char c = *name;
+ name++;
+ i--;
+ *buf = c;
+ if (!c)
+ break;
+ if (c == '\\') {
+ buf++;
+ if (buf < end)
+ *buf++ = c;
+ continue;
+ }
+ if (c == '\n') {
+ *buf++ = '\\';
+ if (buf < end)
+ *buf++ = 'n';
+ continue;
+ }
+ buf++;
+ }
+ m->count = buf - m->buf;
+ seq_printf(m, "\n");
+}
+
+/*
+ * The task state array is a strange "bitmap" of
+ * reasons to sleep. Thus "running" is zero, and
+ * you can test for combinations of others with
+ * simple bit tests.
+ */
+static const char *task_state_array[] = {
+ "R (running)", /* 0 */
+ "S (sleeping)", /* 1 */
+ "D (disk sleep)", /* 2 */
+ "T (stopped)", /* 4 */
+ "T (tracing stop)", /* 8 */
+ "Z (zombie)", /* 16 */
+ "X (dead)" /* 32 */
+};
+
+static inline const char *get_task_state(struct task_struct *tsk)
+{
+ unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state;
+ const char **p = &task_state_array[0];
+
+ while (state) {
+ p++;
+ state >>= 1;
+ }
+ return *p;
+}
+
+static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *p)
+{
+ struct group_info *group_info;
+ int g;
+ struct fdtable *fdt = NULL;
+ const struct cred *cred;
+ pid_t ppid, tpid;
+
+ rcu_read_lock();
+ ppid = pid_alive(p) ?
+ task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
+ tpid = 0;
+ if (pid_alive(p)) {
+ struct task_struct *tracer = tracehook_tracer_task(p);
+ if (tracer)
+ tpid = task_pid_nr_ns(tracer, ns);
+ }
+ cred = get_cred((struct cred *) __task_cred(p));
+ seq_printf(m,
+ "State:\t%s\n"
+ "Tgid:\t%d\n"
+ "Pid:\t%d\n"
+ "PPid:\t%d\n"
+ "TracerPid:\t%d\n"
+ "Uid:\t%d\t%d\t%d\t%d\n"
+ "Gid:\t%d\t%d\t%d\t%d\n",
+ get_task_state(p),
+ task_tgid_nr_ns(p, ns),
+ pid_nr_ns(pid, ns),
+ ppid, tpid,
+ cred->uid, cred->euid, cred->suid, cred->fsuid,
+ cred->gid, cred->egid, cred->sgid, cred->fsgid);
+
+ task_lock(p);
+ if (p->files)
+ fdt = files_fdtable(p->files);
+ seq_printf(m,
+ "FDSize:\t%d\n"
+ "Groups:\t",
+ fdt ? fdt->max_fds : 0);
+ rcu_read_unlock();
+
+ group_info = cred->group_info;
+ task_unlock(p);
+
+ for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
+ seq_printf(m, "%d ", GROUP_AT(group_info, g));
+ put_cred(cred);
+
+ seq_printf(m, "\n");
+}
+
+static void render_sigset_t(struct seq_file *m, const char *header,
+ sigset_t *set)
+{
+ int i;
+
+ seq_printf(m, "%s", header);
+
+ i = _NSIG;
+ do {
+ int x = 0;
+
+ i -= 4;
+ if (sigismember(set, i+1)) x |= 1;
+ if (sigismember(set, i+2)) x |= 2;
+ if (sigismember(set, i+3)) x |= 4;
+ if (sigismember(set, i+4)) x |= 8;
+ seq_printf(m, "%x", x);
+ } while (i >= 4);
+
+ seq_printf(m, "\n");
+}
+
+static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
+ sigset_t *catch)
+{
+ struct k_sigaction *k;
+ int i;
+
+ k = p->sighand->action;
+ for (i = 1; i <= _NSIG; ++i, ++k) {
+ if (k->sa.sa_handler == SIG_IGN)
+ sigaddset(ign, i);
+ else if (k->sa.sa_handler != SIG_DFL)
+ sigaddset(catch, i);
+ }
+}
+
+static inline void task_sig(struct seq_file *m, struct task_struct *p)
+{
+ 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);
+ sigemptyset(&blocked);
+ sigemptyset(&ignored);
+ sigemptyset(&caught);
+
+ 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);
+ qsize = atomic_read(&__task_cred(p)->user->sigpending);
+ qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
+ unlock_task_sighand(p, &flags);
+ }
+
+ seq_printf(m, "Threads:\t%d\n", num_threads);
+ seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
+
+ /* render them all */
+ render_sigset_t(m, "SigPnd:\t", &pending);
+ render_sigset_t(m, "ShdPnd:\t", &shpending);
+ render_sigset_t(m, "SigBlk:\t", &blocked);
+ render_sigset_t(m, "SigIgn:\t", &ignored);
+ render_sigset_t(m, "SigCgt:\t", &caught);
+}
+
+static void render_cap_t(struct seq_file *m, const char *header,
+ kernel_cap_t *a)
+{
+ unsigned __capi;
+
+ seq_printf(m, "%s", header);
+ CAP_FOR_EACH_U32(__capi) {
+ seq_printf(m, "%08x",
+ a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
+ }
+ seq_printf(m, "\n");
+}
+
+static inline void task_cap(struct seq_file *m, struct task_struct *p)
+{
+ const struct cred *cred;
+ kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset;
+
+ rcu_read_lock();
+ cred = __task_cred(p);
+ cap_inheritable = cred->cap_inheritable;
+ cap_permitted = cred->cap_permitted;
+ cap_effective = cred->cap_effective;
+ cap_bset = cred->cap_bset;
+ rcu_read_unlock();
+
+ render_cap_t(m, "CapInh:\t", &cap_inheritable);
+ render_cap_t(m, "CapPrm:\t", &cap_permitted);
+ render_cap_t(m, "CapEff:\t", &cap_effective);
+ render_cap_t(m, "CapBnd:\t", &cap_bset);
+}
+
+static inline void task_context_switch_counts(struct seq_file *m,
+ struct task_struct *p)
+{
+ seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
+ "nonvoluntary_ctxt_switches:\t%lu\n",
+ p->nvcsw,
+ p->nivcsw);
+}
+
+static int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ struct mm_struct *mm = get_task_mm(task);
+
+ task_name(m, task);
+ task_state(m, ns, pid, task);
+
+ if (mm) {
+ task_mem(m, mm);
+ mmput(mm);
+ }
+ task_sig(m, task);
+ task_cap(m, task);
+ cpuset_task_status_allowed(m, task);
+#if defined(CONFIG_S390)
+ task_show_regs(m, task);
+#endif
+ task_context_switch_counts(m, task);
+ return 0;
+}
+
+static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task, int whole)
+{
+ unsigned long vsize, eip, esp, wchan = ~0UL;
+ long priority, nice;
+ int tty_pgrp = -1, tty_nr = 0;
+ sigset_t sigign, sigcatch;
+ char state;
+ pid_t 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;
+ cputime_t cgtime, gtime;
+ unsigned long rsslim = 0;
+ char tcomm[sizeof(task->comm)];
+ unsigned long flags;
+
+ state = *get_task_state(task);
+ vsize = eip = esp = 0;
+ mm = get_task_mm(task);
+ if (mm) {
+ vsize = task_vsize(mm);
+ eip = KSTK_EIP(task);
+ esp = KSTK_ESP(task);
+ }
+
+ get_task_comm(tcomm, task);
+
+ sigemptyset(&sigign);
+ sigemptyset(&sigcatch);
+ cutime = cstime = utime = stime = cputime_zero;
+ cgtime = gtime = cputime_zero;
+
+ if (lock_task_sighand(task, &flags)) {
+ struct signal_struct *sig = task->signal;
+
+ if (sig->tty) {
+ struct pid *pgrp = tty_get_pgrp(sig->tty);
+ tty_pgrp = pid_nr_ns(pgrp, ns);
+ put_pid(pgrp);
+ tty_nr = new_encode_dev(tty_devnum(sig->tty));
+ }
+
+ num_threads = atomic_read(&sig->count);
+ collect_sigign_sigcatch(task, &sigign, &sigcatch);
+
+ cmin_flt = sig->cmin_flt;
+ cmaj_flt = sig->cmaj_flt;
+ cutime = sig->cutime;
+ cstime = sig->cstime;
+ cgtime = sig->cgtime;
+ rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
+
+ /* add up live thread stats at the group level */
+ if (whole) {
+ struct task_cputime cputime;
+ struct task_struct *t = task;
+ do {
+ min_flt += t->min_flt;
+ maj_flt += t->maj_flt;
+ gtime = cputime_add(gtime, task_gtime(t));
+ t = next_thread(t);
+ } while (t != task);
+
+ min_flt += sig->min_flt;
+ maj_flt += sig->maj_flt;
+ thread_group_cputime(task, &cputime);
+ utime = cputime.utime;
+ stime = cputime.stime;
+ gtime = cputime_add(gtime, sig->gtime);
+ }
+
+ sid = task_session_nr_ns(task, ns);
+ ppid = task_tgid_nr_ns(task->real_parent, ns);
+ pgid = task_pgrp_nr_ns(task, ns);
+
+ unlock_task_sighand(task, &flags);
+ }
+
+ if (!whole || num_threads < 2)
+ wchan = get_wchan(task);
+ if (!whole) {
+ min_flt = task->min_flt;
+ maj_flt = task->maj_flt;
+ utime = task_utime(task);
+ stime = task_stime(task);
+ gtime = task_gtime(task);
+ }
+
+ /* 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);
+
+ /* Temporary variable needed for gcc-2.96 */
+ /* convert timespec -> nsec*/
+ start_time =
+ (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
+ + task->real_start_time.tv_nsec;
+ /* convert nsec -> ticks */
+ start_time = nsec_to_clock_t(start_time);
+
+ seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
+%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 %u %u %llu %lu %ld\n",
+ pid_nr_ns(pid, ns),
+ tcomm,
+ state,
+ ppid,
+ pgid,
+ sid,
+ tty_nr,
+ tty_pgrp,
+ task->flags,
+ 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,
+ start_time,
+ vsize,
+ mm ? get_mm_rss(mm) : 0,
+ rsslim,
+ mm ? mm->start_code : 0,
+ mm ? mm->end_code : 0,
+ mm ? mm->start_stack : 0,
+ esp,
+ eip,
+ /* The signal information here is obsolete.
+ * It must be decimal for Linux 2.0 compatibility.
+ * Use /proc/#/status for real-time signals.
+ */
+ task->pending.signal.sig[0] & 0x7fffffffUL,
+ task->blocked.sig[0] & 0x7fffffffUL,
+ sigign .sig[0] & 0x7fffffffUL,
+ sigcatch .sig[0] & 0x7fffffffUL,
+ wchan,
+ 0UL,
+ 0UL,
+ task->exit_signal,
+ task_cpu(task),
+ task->rt_priority,
+ task->policy,
+ (unsigned long long)delayacct_blkio_ticks(task),
+ cputime_to_clock_t(gtime),
+ cputime_to_clock_t(cgtime));
+ if (mm)
+ mmput(mm);
+ return 0;
+}
+
+static int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ return do_task_stat(m, ns, pid, task, 0);
+}
+
+static int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ return do_task_stat(m, ns, pid, task, 1);
+}
+
+static int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
+ struct mm_struct *mm = get_task_mm(task);
+
+ if (mm) {
+ size = task_statm(mm, &shared, &text, &data, &resident);
+ mmput(mm);
+ }
+ seq_printf(m, "%d %d %d %d %d %d %d\n",
+ size, resident, shared, text, lib, data, 0);
+
+ return 0;
+}
+
/*
* Count the number of hardlinks for the pid_entry table, excluding the .
* and .. links.
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index f6db961..bed3ae0 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -43,14 +43,6 @@ do { \
} while(0)
#endif
-extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task);
-extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task);
-extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task);
-extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
- struct pid *pid, struct task_struct *task);
extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
extern const struct file_operations proc_maps_operations;
--
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