@@ -188,33 +188,26 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
seq_printf(m, "State:\t%s", get_task_state(p));
- seq_puts(m, "\nTgid:\t");
- seq_put_decimal_ull(m, 0, tgid);
- seq_puts(m, "\nNgid:\t");
- seq_put_decimal_ull(m, 0, ngid);
- seq_puts(m, "\nPid:\t");
- seq_put_decimal_ull(m, 0, pid_nr_ns(pid, ns));
- seq_puts(m, "\nPPid:\t");
- seq_put_decimal_ull(m, 0, ppid);
- seq_puts(m, "\nTracerPid:\t");
- seq_put_decimal_ull(m, 0, tpid);
- seq_puts(m, "\nUid:");
- seq_put_decimal_ull(m, '\t', from_kuid_munged(user_ns, cred->uid));
- seq_put_decimal_ull(m, '\t', from_kuid_munged(user_ns, cred->euid));
- seq_put_decimal_ull(m, '\t', from_kuid_munged(user_ns, cred->suid));
- seq_put_decimal_ull(m, '\t', from_kuid_munged(user_ns, cred->fsuid));
- seq_puts(m, "\nGid:");
- seq_put_decimal_ull(m, '\t', from_kgid_munged(user_ns, cred->gid));
- seq_put_decimal_ull(m, '\t', from_kgid_munged(user_ns, cred->egid));
- seq_put_decimal_ull(m, '\t', from_kgid_munged(user_ns, cred->sgid));
- seq_put_decimal_ull(m, '\t', from_kgid_munged(user_ns, cred->fsgid));
- seq_puts(m, "\nFDSize:\t");
- seq_put_decimal_ull(m, 0, max_fds);
+ seq_put_decimal_ull(m, "\nTgid:\t", tgid);
+ seq_put_decimal_ull(m, "\nNgid:\t", ngid);
+ seq_put_decimal_ull(m, "\nPid:\t", pid_nr_ns(pid, ns));
+ seq_put_decimal_ull(m, "\nPPid:\t", ppid);
+ seq_put_decimal_ull(m, "\nTracerPid:\t", tpid);
+ seq_put_decimal_ull(m, "\nUid:\t", from_kuid_munged(user_ns, cred->uid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->euid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->suid));
+ seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->fsuid));
+ seq_put_decimal_ull(m, "\nGid:\t", from_kgid_munged(user_ns, cred->gid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->egid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->sgid));
+ seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->fsgid));
+ seq_put_decimal_ull(m, "\nFDSize:\t", max_fds);
seq_puts(m, "\nGroups:\t");
group_info = cred->group_info;
for (g = 0; g < group_info->ngroups; g++)
- seq_put_decimal_ull(m, g ? ' ' : 0, from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
+ seq_put_decimal_ull(m, g ? " " : "",
+ from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
put_cred(cred);
/* Trailing space shouldn't have been added in the first place. */
seq_putc(m, ' ');
@@ -222,16 +215,16 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
#ifdef CONFIG_PID_NS
seq_puts(m, "\nNStgid:");
for (g = ns->level; g <= pid->level; g++)
- seq_put_decimal_ull(m, '\t', task_tgid_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_tgid_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSpid:");
for (g = ns->level; g <= pid->level; g++)
- seq_put_decimal_ull(m, '\t', task_pid_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_pid_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSpgid:");
for (g = ns->level; g <= pid->level; g++)
- seq_put_decimal_ull(m, '\t', task_pgrp_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_pgrp_nr_ns(p, pid->numbers[g].ns));
seq_puts(m, "\nNSsid:");
for (g = ns->level; g <= pid->level; g++)
- seq_put_decimal_ull(m, '\t', task_session_nr_ns(p, pid->numbers[g].ns));
+ seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns));
#endif
seq_putc(m, '\n');
}
@@ -300,11 +293,9 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
unlock_task_sighand(p, &flags);
}
- seq_puts(m, "Threads:\t");
- seq_put_decimal_ull(m, 0, num_threads);
- seq_puts(m, "\nSigQ:\t");
- seq_put_decimal_ull(m, 0, qsize);
- seq_put_decimal_ull(m, '/', qlim);
+ seq_put_decimal_ull(m, "Threads:\t", num_threads);
+ seq_put_decimal_ull(m, "\nSigQ:\t", qsize);
+ seq_put_decimal_ull(m, "/", qlim);
/* render them all */
render_sigset_t(m, "\nSigPnd:\t", &pending);
@@ -352,8 +343,7 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
{
#ifdef CONFIG_SECCOMP
- seq_puts(m, "Seccomp:\t");
- seq_put_decimal_ull(m, 0, p->seccomp.mode);
+ seq_put_decimal_ull(m, "Seccomp:\t", p->seccomp.mode);
seq_putc(m, '\n');
#endif
}
@@ -361,10 +351,8 @@ static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
static inline void task_context_switch_counts(struct seq_file *m,
struct task_struct *p)
{
- seq_puts(m, "voluntary_ctxt_switches:\t");
- seq_put_decimal_ull(m, 0, p->nvcsw);
- seq_puts(m, "\nnonvoluntary_ctxt_switches:\t");
- seq_put_decimal_ull(m, 0, p->nivcsw);
+ seq_put_decimal_ull(m, "voluntary_ctxt_switches:\t", p->nvcsw);
+ seq_put_decimal_ull(m, "\nnonvoluntary_ctxt_switches:\t", p->nivcsw);
seq_putc(m, '\n');
}
@@ -497,41 +485,41 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
start_time = nsec_to_clock_t(task->real_start_time);
seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
- seq_put_decimal_ll(m, ' ', ppid);
- seq_put_decimal_ll(m, ' ', pgid);
- seq_put_decimal_ll(m, ' ', sid);
- seq_put_decimal_ll(m, ' ', tty_nr);
- seq_put_decimal_ll(m, ' ', tty_pgrp);
- seq_put_decimal_ull(m, ' ', task->flags);
- seq_put_decimal_ull(m, ' ', min_flt);
- seq_put_decimal_ull(m, ' ', cmin_flt);
- seq_put_decimal_ull(m, ' ', maj_flt);
- seq_put_decimal_ull(m, ' ', cmaj_flt);
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime));
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime));
- seq_put_decimal_ll(m, ' ', priority);
- seq_put_decimal_ll(m, ' ', nice);
- seq_put_decimal_ll(m, ' ', num_threads);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', start_time);
- seq_put_decimal_ull(m, ' ', vsize);
- seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0);
- seq_put_decimal_ull(m, ' ', rsslim);
- seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0);
- seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0);
- seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0);
- seq_put_decimal_ull(m, ' ', esp);
- seq_put_decimal_ull(m, ' ', eip);
+ seq_put_decimal_ll(m, " ", ppid);
+ seq_put_decimal_ll(m, " ", pgid);
+ seq_put_decimal_ll(m, " ", sid);
+ seq_put_decimal_ll(m, " ", tty_nr);
+ seq_put_decimal_ll(m, " ", tty_pgrp);
+ seq_put_decimal_ull(m, " ", task->flags);
+ seq_put_decimal_ull(m, " ", min_flt);
+ seq_put_decimal_ull(m, " ", cmin_flt);
+ seq_put_decimal_ull(m, " ", maj_flt);
+ seq_put_decimal_ull(m, " ", cmaj_flt);
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(utime));
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(stime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cutime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cstime));
+ seq_put_decimal_ll(m, " ", priority);
+ seq_put_decimal_ll(m, " ", nice);
+ seq_put_decimal_ll(m, " ", num_threads);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", start_time);
+ seq_put_decimal_ull(m, " ", vsize);
+ seq_put_decimal_ull(m, " ", mm ? get_mm_rss(mm) : 0);
+ seq_put_decimal_ull(m, " ", rsslim);
+ seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->start_code : 1) : 0);
+ seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->end_code : 1) : 0);
+ seq_put_decimal_ull(m, " ", (permitted && mm) ? mm->start_stack : 0);
+ seq_put_decimal_ull(m, " ", esp);
+ seq_put_decimal_ull(m, " ", eip);
/* The signal information here is obsolete.
* It must be decimal for Linux 2.0 compatibility.
* Use /proc/#/status for real-time signals.
*/
- seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL);
- seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", task->pending.signal.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", task->blocked.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", sigign.sig[0] & 0x7fffffffUL);
+ seq_put_decimal_ull(m, " ", sigcatch.sig[0] & 0x7fffffffUL);
/*
* We used to output the absolute kernel address, but that's an
@@ -545,31 +533,31 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
else
seq_puts(m, " 0");
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ll(m, ' ', task->exit_signal);
- seq_put_decimal_ll(m, ' ', task_cpu(task));
- seq_put_decimal_ull(m, ' ', task->rt_priority);
- seq_put_decimal_ull(m, ' ', task->policy);
- seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task));
- seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime));
- seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime));
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ll(m, " ", task->exit_signal);
+ seq_put_decimal_ll(m, " ", task_cpu(task));
+ seq_put_decimal_ull(m, " ", task->rt_priority);
+ seq_put_decimal_ull(m, " ", task->policy);
+ seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task));
+ seq_put_decimal_ull(m, " ", cputime_to_clock_t(gtime));
+ seq_put_decimal_ll(m, " ", cputime_to_clock_t(cgtime));
if (mm && permitted) {
- seq_put_decimal_ull(m, ' ', mm->start_data);
- seq_put_decimal_ull(m, ' ', mm->end_data);
- seq_put_decimal_ull(m, ' ', mm->start_brk);
- seq_put_decimal_ull(m, ' ', mm->arg_start);
- seq_put_decimal_ull(m, ' ', mm->arg_end);
- seq_put_decimal_ull(m, ' ', mm->env_start);
- seq_put_decimal_ull(m, ' ', mm->env_end);
+ seq_put_decimal_ull(m, " ", mm->start_data);
+ seq_put_decimal_ull(m, " ", mm->end_data);
+ seq_put_decimal_ull(m, " ", mm->start_brk);
+ seq_put_decimal_ull(m, " ", mm->arg_start);
+ seq_put_decimal_ull(m, " ", mm->arg_end);
+ seq_put_decimal_ull(m, " ", mm->env_start);
+ seq_put_decimal_ull(m, " ", mm->env_end);
} else
- seq_printf(m, " 0 0 0 0 0 0 0");
+ seq_puts(m, " 0 0 0 0 0 0 0");
if (permitted)
- seq_put_decimal_ll(m, ' ', task->exit_code);
+ seq_put_decimal_ll(m, " ", task->exit_code);
else
- seq_put_decimal_ll(m, ' ', 0);
+ seq_puts(m, " 0");
seq_putc(m, '\n');
if (mm)
@@ -605,13 +593,13 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
* seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n",
* size, resident, shared, text, data);
*/
- seq_put_decimal_ull(m, 0, size);
- seq_put_decimal_ull(m, ' ', resident);
- seq_put_decimal_ull(m, ' ', shared);
- seq_put_decimal_ull(m, ' ', text);
- seq_put_decimal_ull(m, ' ', 0);
- seq_put_decimal_ull(m, ' ', data);
- seq_put_decimal_ull(m, ' ', 0);
+ seq_put_decimal_ull(m, "", size);
+ seq_put_decimal_ull(m, " ", resident);
+ seq_put_decimal_ull(m, " ", shared);
+ seq_put_decimal_ull(m, " ", text);
+ seq_put_decimal_ull(m, " ", 0);
+ seq_put_decimal_ull(m, " ", data);
+ seq_put_decimal_ull(m, " ", 0);
seq_putc(m, '\n');
return 0;
@@ -115,17 +115,16 @@ static int show_stat(struct seq_file *p, void *v)
}
sum += arch_irq_stat();
- seq_puts(p, "cpu ");
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice));
+ seq_put_decimal_ull(p, "cpu ", cputime64_to_clock_t(user));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_putc(p, '\n');
for_each_online_cpu(i) {
@@ -141,23 +140,23 @@ static int show_stat(struct seq_file *p, void *v)
guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
seq_printf(p, "cpu%d", i);
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(system));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(idle));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(iowait));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(irq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(softirq));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(steal));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest));
- seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(guest_nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(user));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(nice));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(system));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(idle));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(iowait));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(irq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(softirq));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(steal));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest));
+ seq_put_decimal_ull(p, " ", cputime64_to_clock_t(guest_nice));
seq_putc(p, '\n');
}
- seq_printf(p, "intr %llu", (unsigned long long)sum);
+ seq_put_decimal_ull(p, "intr ", (unsigned long long)sum);
/* sum again ? it could be updated? */
for_each_irq_nr(j)
- seq_put_decimal_ull(p, ' ', kstat_irqs_usr(j));
+ seq_put_decimal_ull(p, " ", kstat_irqs_usr(j));
seq_printf(p,
"\nctxt %llu\n"
@@ -171,10 +170,10 @@ static int show_stat(struct seq_file *p, void *v)
nr_running(),
nr_iowait());
- seq_printf(p, "softirq %llu", (unsigned long long)sum_softirq);
+ seq_put_decimal_ull(p, "softirq ", (unsigned long long)sum_softirq);
for (i = 0; i < NR_SOFTIRQS; i++)
- seq_put_decimal_ull(p, ' ', per_softirq_sums[i]);
+ seq_put_decimal_ull(p, " ", per_softirq_sums[i]);
seq_putc(p, '\n');
return 0;
@@ -677,11 +677,11 @@ EXPORT_SYMBOL(seq_puts);
/*
* A helper routine for putting decimal numbers without rich format of printf().
* only 'unsigned long long' is supported.
- * This routine will put one byte delimiter + number into seq_file.
+ * This routine will put strlen(delimiter) + number into seq_file.
* This routine is very quick when you show lots of numbers.
* In usual cases, it will be better to use seq_printf(). It's easier to read.
*/
-void seq_put_decimal_ull(struct seq_file *m, char delimiter,
+void seq_put_decimal_ull(struct seq_file *m, const char *delimiter,
unsigned long long num)
{
int len;
@@ -689,8 +689,15 @@ void seq_put_decimal_ull(struct seq_file *m, char delimiter,
if (m->count + 2 >= m->size) /* we'll write 2 bytes at least */
goto overflow;
- if (delimiter)
- m->buf[m->count++] = delimiter;
+ len = strlen(delimiter);
+ if (m->count + len >= m->size)
+ goto overflow;
+
+ memcpy(m->buf + m->count, delimiter, len);
+ m->count += len;
+
+ if (m->count + 1 >= m->size)
+ goto overflow;
if (num < 10) {
m->buf[m->count++] = num + '0';
@@ -700,6 +707,7 @@ void seq_put_decimal_ull(struct seq_file *m, char delimiter,
len = num_to_str(m->buf + m->count, m->size - m->count, num);
if (!len)
goto overflow;
+
m->count += len;
return;
@@ -708,19 +716,42 @@ overflow:
}
EXPORT_SYMBOL(seq_put_decimal_ull);
-void seq_put_decimal_ll(struct seq_file *m, char delimiter, long long num)
+void seq_put_decimal_ll(struct seq_file *m, const char *delimiter, long long num)
{
+ int len;
+
+ if (m->count + 3 >= m->size) /* we'll write 2 bytes at least */
+ goto overflow;
+
+ len = strlen(delimiter);
+ if (m->count + len >= m->size)
+ goto overflow;
+
+ memcpy(m->buf + m->count, delimiter, len);
+ m->count += len;
+
+ if (m->count + 2 >= m->size)
+ goto overflow;
+
if (num < 0) {
- if (m->count + 3 >= m->size) {
- seq_set_overflow(m);
- return;
- }
- if (delimiter)
- m->buf[m->count++] = delimiter;
+ m->buf[m->count++] = '-';
num = -num;
- delimiter = '-';
}
- seq_put_decimal_ull(m, delimiter, num);
+
+ if (num < 10) {
+ m->buf[m->count++] = num + '0';
+ return;
+ }
+
+ len = num_to_str(m->buf + m->count, m->size - m->count, num);
+ if (!len)
+ goto overflow;
+
+ m->count += len;
+ return;
+
+overflow:
+ seq_set_overflow(m);
}
EXPORT_SYMBOL(seq_put_decimal_ll);
@@ -117,9 +117,9 @@ __printf(2, 3)
void seq_printf(struct seq_file *m, const char *fmt, ...);
void seq_putc(struct seq_file *m, char c);
void seq_puts(struct seq_file *m, const char *s);
-void seq_put_decimal_ull(struct seq_file *m, char delimiter,
+void seq_put_decimal_ull(struct seq_file *m, const char *delimiter,
unsigned long long num);
-void seq_put_decimal_ll(struct seq_file *m, char delimiter, long long num);
+void seq_put_decimal_ll(struct seq_file *m, const char *delimiter, long long num);
void seq_escape(struct seq_file *m, const char *s, const char *esc);
void seq_hex_dump(struct seq_file *m, const char *prefix_str, int prefix_type,
Allow some seq_puts removals by taking a string instead of a single char. Signed-off-by: Joe Perches <joe@perches.com> --- On top of Alexey's patch, this would also save a couple percent CPU fs/proc/array.c | 178 ++++++++++++++++++++++------------------------- fs/proc/stat.c | 49 +++++++------ fs/seq_file.c | 57 +++++++++++---- include/linux/seq_file.h | 4 +- 4 files changed, 153 insertions(+), 135 deletions(-)