diff options
Diffstat (limited to 'fs/proc/array.c')
-rw-r--r-- | fs/proc/array.c | 123 |
1 files changed, 84 insertions, 39 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c index 74f30e0c038..965625a0977 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -62,6 +62,8 @@ #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> @@ -76,9 +78,7 @@ #include <linux/rcupdate.h> #include <linux/delayacct.h> -#include <asm/uaccess.h> #include <asm/pgtable.h> -#include <asm/io.h> #include <asm/processor.h> #include "internal.h" @@ -87,10 +87,10 @@ do { memcpy(buffer, string, strlen(string)); \ buffer += strlen(string); } while (0) -static inline char * task_name(struct task_struct *p, char * buf) +static inline char *task_name(struct task_struct *p, char *buf) { int i; - char * name; + char *name; char tcomm[sizeof(p->comm)]; get_task_comm(tcomm, p); @@ -138,7 +138,7 @@ static const char *task_state_array[] = { "X (dead)" /* 32 */ }; -static inline const char * get_task_state(struct task_struct *tsk) +static inline const char *get_task_state(struct task_struct *tsk) { unsigned int state = (tsk->state & (TASK_RUNNING | TASK_INTERRUPTIBLE | @@ -156,7 +156,7 @@ static inline const char * get_task_state(struct task_struct *tsk) return *p; } -static inline char * task_state(struct task_struct *p, char *buffer) +static inline char *task_state(struct task_struct *p, char *buffer) { struct group_info *group_info; int g; @@ -165,7 +165,6 @@ static inline char * task_state(struct task_struct *p, char *buffer) rcu_read_lock(); buffer += sprintf(buffer, "State:\t%s\n" - "SleepAVG:\t%lu%%\n" "Tgid:\t%d\n" "Pid:\t%d\n" "PPid:\t%d\n" @@ -173,9 +172,8 @@ static inline char * task_state(struct task_struct *p, char *buffer) "Uid:\t%d\t%d\t%d\t%d\n" "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, - pid_alive(p) ? rcu_dereference(p->real_parent)->tgid : 0, + p->tgid, p->pid, + pid_alive(p) ? rcu_dereference(p->real_parent)->tgid : 0, pid_alive(p) && p->ptrace ? rcu_dereference(p->parent)->pid : 0, p->uid, p->euid, p->suid, p->fsuid, p->gid, p->egid, p->sgid, p->fsgid); @@ -193,15 +191,15 @@ static inline char * task_state(struct task_struct *p, char *buffer) get_group_info(group_info); task_unlock(p); - for (g = 0; g < min(group_info->ngroups,NGROUPS_SMALL); g++) - buffer += sprintf(buffer, "%d ", GROUP_AT(group_info,g)); + for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++) + buffer += sprintf(buffer, "%d ", GROUP_AT(group_info, g)); put_group_info(group_info); buffer += sprintf(buffer, "\n"); return buffer; } -static char * render_sigset_t(const char *header, sigset_t *set, char *buffer) +static char *render_sigset_t(const char *header, sigset_t *set, char *buffer) { int i, len; @@ -241,7 +239,7 @@ static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign, } } -static inline char * task_sig(struct task_struct *p, char *buffer) +static inline char *task_sig(struct task_struct *p, char *buffer) { unsigned long flags; sigset_t pending, shpending, blocked, ignored, caught; @@ -291,14 +289,23 @@ static inline char *task_cap(struct task_struct *p, char *buffer) cap_t(p->cap_effective)); } -int proc_pid_status(struct task_struct *task, char * buffer) +static inline char *task_context_switch_counts(struct task_struct *p, + char *buffer) { - char * orig = buffer; + return buffer + sprintf(buffer, "voluntary_ctxt_switches:\t%lu\n" + "nonvoluntary_ctxt_switches:\t%lu\n", + p->nvcsw, + p->nivcsw); +} + +int proc_pid_status(struct task_struct *task, char *buffer) +{ + char *orig = buffer; struct mm_struct *mm = get_task_mm(task); buffer = task_name(task, buffer); buffer = task_state(task, buffer); - + if (mm) { buffer = task_mem(mm, buffer); mmput(mm); @@ -309,10 +316,45 @@ int proc_pid_status(struct task_struct *task, char * buffer) #if defined(CONFIG_S390) buffer = task_show_regs(task, buffer); #endif + buffer = task_context_switch_counts(task, buffer); return buffer - orig; } -static int do_task_stat(struct task_struct *task, char * buffer, int whole) +static clock_t task_utime(struct task_struct *p) +{ + clock_t utime = cputime_to_clock_t(p->utime), + total = utime + cputime_to_clock_t(p->stime); + u64 temp; + + /* + * Use CFS's precise accounting: + */ + temp = (u64)nsec_to_clock_t(p->se.sum_exec_runtime); + + if (total) { + temp *= utime; + do_div(temp, total); + } + utime = (clock_t)temp; + + return utime; +} + +static clock_t task_stime(struct task_struct *p) +{ + clock_t stime; + + /* + * Use CFS's precise accounting. (we subtract utime from + * the total, to make sure the total observed by userspace + * grows monotonically - apps rely on that): + */ + stime = nsec_to_clock_t(p->se.sum_exec_runtime) - task_utime(p); + + return stime; +} + +static int do_task_stat(struct task_struct *task, char *buffer, int whole) { unsigned long vsize, eip, esp, wchan = ~0UL; long priority, nice; @@ -320,13 +362,14 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) sigset_t sigign, sigcatch; char state; int res; - pid_t ppid = 0, pgid = -1, sid = -1; + 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 cutime, cstime; + clock_t utime, stime; unsigned long rsslim = 0; char tcomm[sizeof(task->comm)]; unsigned long flags; @@ -344,7 +387,8 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) sigemptyset(&sigign); sigemptyset(&sigcatch); - cutime = cstime = utime = stime = cputime_zero; + cutime = cstime = cputime_zero; + utime = stime = 0; rcu_read_lock(); if (lock_task_sighand(task, &flags)) { @@ -370,15 +414,15 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) do { min_flt += t->min_flt; maj_flt += t->maj_flt; - utime = cputime_add(utime, t->utime); - stime = cputime_add(stime, t->stime); + utime += task_utime(t); + stime += task_stime(t); 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); + utime += cputime_to_clock_t(sig->utime); + stime += cputime_to_clock_t(sig->stime); } sid = signal_session(sig); @@ -389,13 +433,13 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) } rcu_read_unlock(); - if (!whole || num_threads<2) + if (!whole || num_threads < 2) wchan = get_wchan(task); if (!whole) { min_flt = task->min_flt; maj_flt = task->maj_flt; - utime = task->utime; - stime = task->stime; + utime = task_utime(task); + stime = task_stime(task); } /* scale priority and nice values from timeslices to -20..20 */ @@ -405,12 +449,13 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) /* Temporary variable needed for gcc-2.96 */ /* convert timespec -> nsec*/ - start_time = (unsigned long long)task->start_time.tv_sec * NSEC_PER_SEC - + task->start_time.tv_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); - res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %u %lu \ + res = sprintf(buffer, "%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\n", task->pid, @@ -426,8 +471,8 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) cmin_flt, maj_flt, cmaj_flt, - cputime_to_clock_t(utime), - cputime_to_clock_t(stime), + utime, + stime, cputime_to_clock_t(cutime), cputime_to_clock_t(cstime), priority, @@ -436,7 +481,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) start_time, vsize, mm ? get_mm_rss(mm) : 0, - rsslim, + rsslim, mm ? mm->start_code : 0, mm ? mm->end_code : 0, mm ? mm->start_stack : 0, @@ -458,17 +503,17 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole) task->rt_priority, task->policy, (unsigned long long)delayacct_blkio_ticks(task)); - if(mm) + if (mm) mmput(mm); return res; } -int proc_tid_stat(struct task_struct *task, char * buffer) +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) +int proc_tgid_stat(struct task_struct *task, char *buffer) { return do_task_stat(task, buffer, 1); } @@ -477,12 +522,12 @@ 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) { size = task_statm(mm, &shared, &text, &data, &resident); mmput(mm); } - return sprintf(buffer,"%d %d %d %d %d %d %d\n", + return sprintf(buffer, "%d %d %d %d %d %d %d\n", size, resident, shared, text, lib, data, 0); } |