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Export the whole thread name in kinfo_proc

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kinfo_proc::ki_tdname is three characters shorter than
thread::td_name.  Add a ki_moretdname field for these three
extra characters.  Add the new field to kinfo_proc32, as well.
Update all in-tree consumers to read the new field and assemble
the full name, except for lldb's HostThreadFreeBSD.cpp, which
I will handle separately.  Bump __FreeBSD_version.

Reviewed by:	kib
MFC after:	1 week
Relnotes:	yes
Sponsored by:	Dell EMC
Differential Revision:	https://reviews.freebsd.org/D8722
This commit is contained in:
Eric van Gyzen 2016-12-07 15:04:22 +00:00
parent 75747c209c
commit 3d32d4a7c9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=309676
12 changed files with 62 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
bin/ps/print.c
View File

@ -120,11 +120,12 @@ command(KINFO *k, VARENT *ve)
if (cflag) {
/* If it is the last field, then don't pad */
if (STAILQ_NEXT(ve, next_ve) == NULL) {
asprintf(&str, "%s%s%s%s",
asprintf(&str, "%s%s%s%s%s",
k->ki_d.prefix ? k->ki_d.prefix : "",
k->ki_p->ki_comm,
(showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "");
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
} else
str = strdup(k->ki_p->ki_comm);
@ -172,14 +173,16 @@ ucomm(KINFO *k, VARENT *ve)
char *str;
if (STAILQ_NEXT(ve, next_ve) == NULL) { /* last field, don't pad */
asprintf(&str, "%s%s%s%s",
asprintf(&str, "%s%s%s%s%s",
k->ki_d.prefix ? k->ki_d.prefix : "",
k->ki_p->ki_comm,
(showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "");
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
(showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
} else {
if (showthreads && k->ki_p->ki_numthreads > 1)
asprintf(&str, "%s/%s", k->ki_p->ki_comm, k->ki_p->ki_tdname);
asprintf(&str, "%s/%s%s", k->ki_p->ki_comm,
k->ki_p->ki_tdname, k->ki_p->ki_moretdname);
else
str = strdup(k->ki_p->ki_comm);
}
@ -192,7 +195,8 @@ tdnam(KINFO *k, VARENT *ve __unused)
char *str;
if (showthreads && k->ki_p->ki_numthreads > 1)
str = strdup(k->ki_p->ki_tdname);
asprintf(&str, "%s%s", k->ki_p->ki_tdname,
k->ki_p->ki_moretdname);
else
str = strdup(" ");

2
lib/libkvm/kvm_proc.c
View File

@ -426,8 +426,6 @@ kvm_proclist(kvm_t *kd, int what, int arg, struct proc *p,
kp->ki_pri.pri_native = mtd.td_base_pri;
kp->ki_lastcpu = mtd.td_lastcpu;
kp->ki_wchan = mtd.td_wchan;
if (mtd.td_name[0] != 0)
strlcpy(kp->ki_tdname, mtd.td_name, MAXCOMLEN);
kp->ki_oncpu = mtd.td_oncpu;
if (mtd.td_name[0] != '\0')
strlcpy(kp->ki_tdname, mtd.td_name, sizeof(kp->ki_tdname));

3
sys/compat/freebsd32/freebsd32.h
View File

@ -315,7 +315,8 @@ struct kinfo_proc32 {
char ki_comm[COMMLEN+1];
char ki_emul[KI_EMULNAMELEN+1];
char ki_loginclass[LOGINCLASSLEN+1];
char ki_sparestrings[50];
char ki_moretdname[MAXCOMLEN-TDNAMLEN+1];
char ki_sparestrings[46];
int ki_spareints[KI_NSPARE_INT];
int ki_oncpu;
int ki_lastcpu;

10
sys/kern/kern_proc.c
View File

@ -1020,7 +1020,14 @@ fill_kinfo_thread(struct thread *td, struct kinfo_proc *kp, int preferthread)
strlcpy(kp->ki_wmesg, td->td_wmesg, sizeof(kp->ki_wmesg));
else
bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg));
strlcpy(kp->ki_tdname, td->td_name, sizeof(kp->ki_tdname));
if (strlcpy(kp->ki_tdname, td->td_name, sizeof(kp->ki_tdname)) >=
sizeof(kp->ki_tdname)) {
strlcpy(kp->ki_moretdname,
td->td_name + sizeof(kp->ki_tdname) - 1,
sizeof(kp->ki_moretdname));
} else {
bzero(kp->ki_moretdname, sizeof(kp->ki_moretdname));
}
if (TD_ON_LOCK(td)) {
kp->ki_kiflag |= KI_LOCKBLOCK;
strlcpy(kp->ki_lockname, td->td_lockname,
@ -1265,6 +1272,7 @@ freebsd32_kinfo_proc_out(const struct kinfo_proc *ki, struct kinfo_proc32 *ki32)
bcopy(ki->ki_comm, ki32->ki_comm, COMMLEN + 1);
bcopy(ki->ki_emul, ki32->ki_emul, KI_EMULNAMELEN + 1);
bcopy(ki->ki_loginclass, ki32->ki_loginclass, LOGINCLASSLEN + 1);
bcopy(ki->ki_moretdname, ki32->ki_moretdname, MAXCOMLEN - TDNAMLEN + 1);
CP(*ki, *ki32, ki_tracer);
CP(*ki, *ki32, ki_flag2);
CP(*ki, *ki32, ki_fibnum);

2
sys/sys/param.h
View File

@ -58,7 +58,7 @@
* in the range 5 to 9.
*/
#undef __FreeBSD_version
#define __FreeBSD_version 1200017 /* Master, propagated to newvers */
#define __FreeBSD_version 1200018 /* Master, propagated to newvers */
/*
* __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD,

3
sys/sys/user.h
View File

@ -180,12 +180,13 @@ struct kinfo_proc {
char ki_comm[COMMLEN+1]; /* command name */
char ki_emul[KI_EMULNAMELEN+1]; /* emulation name */
char ki_loginclass[LOGINCLASSLEN+1]; /* login class */
char ki_moretdname[MAXCOMLEN-TDNAMLEN+1]; /* more thread name */
/*
* When adding new variables, take space for char-strings from the
* front of ki_sparestrings, and ints from the end of ki_spareints.
* That way the spare room from both arrays will remain contiguous.
*/
char ki_sparestrings[50]; /* spare string space */
char ki_sparestrings[46]; /* spare string space */
int ki_spareints[KI_NSPARE_INT]; /* spare room for growth */
int ki_oncpu; /* Which cpu we are on */
int ki_lastcpu; /* Last cpu we were on */

16
usr.bin/procstat/procstat.c
View File

@ -35,6 +35,7 @@
#include <libprocstat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
@ -126,6 +127,21 @@ kinfo_proc_sort(struct kinfo_proc *kipp, int count)
qsort(kipp, count, sizeof(*kipp), kinfo_proc_compare);
}
const char *
kinfo_proc_thread_name(const struct kinfo_proc *kipp)
{
static char name[MAXCOMLEN+1];
strlcpy(name, kipp->ki_tdname, sizeof(name));
strlcat(name, kipp->ki_moretdname, sizeof(name));
if (name[0] == '\0' || strcmp(kipp->ki_comm, name) == 0) {
name[0] = '-';
name[1] = '\0';
}
return (name);
}
int
main(int argc, char *argv[])
{

1
usr.bin/procstat/procstat.h
View File

@ -38,6 +38,7 @@ extern int hflag, nflag, Cflag, Hflag;
struct kinfo_proc;
void kinfo_proc_sort(struct kinfo_proc *kipp, int count);
const char * kinfo_proc_thread_name(const struct kinfo_proc *kipp);
void procstat_args(struct procstat *prstat, struct kinfo_proc *kipp);
void procstat_auxv(struct procstat *prstat, struct kinfo_proc *kipp);

9
usr.bin/procstat/procstat_cs.c
View File

@ -53,7 +53,7 @@ procstat_cs(struct procstat *procstat, struct kinfo_proc *kipp)
int once, twice, lastcpu, cpu;
if (!hflag)
xo_emit("{T:/%5s %6s %-16s %-16s %2s %4s %-7s}\n", "PID",
xo_emit("{T:/%5s %6s %-19s %-19s %2s %4s %-7s}\n", "PID",
"TID", "COMM", "TDNAME", "CPU", "CSID", "CPU MASK");
kip = procstat_getprocs(procstat, KERN_PROC_PID | KERN_PROC_INC_THREAD,
@ -65,11 +65,10 @@ procstat_cs(struct procstat *procstat, struct kinfo_proc *kipp)
kipp = &kip[i];
xo_emit("{k:process_id/%5d/%d} ", kipp->ki_pid);
xo_emit("{:thread_id/%6d/%d} ", kipp->ki_tid);
xo_emit("{:command/%-16s/%s} ", strlen(kipp->ki_comm) ?
xo_emit("{:command/%-19s/%s} ", strlen(kipp->ki_comm) ?
kipp->ki_comm : "-");
xo_emit("{:thread_name/%-16s/%s} ", (strlen(kipp->ki_tdname) &&
(strcmp(kipp->ki_comm, kipp->ki_tdname) != 0)) ?
kipp->ki_tdname : "-");
xo_emit("{:thread_name/%-19s/%s} ",
kinfo_proc_thread_name(kipp));
if (kipp->ki_oncpu != 255)
xo_emit("{:cpu/%3d/%d} ", kipp->ki_oncpu);
else if (kipp->ki_lastcpu != 255)

9
usr.bin/procstat/procstat_kstack.c
View File

@ -171,7 +171,7 @@ procstat_kstack(struct procstat *procstat, struct kinfo_proc *kipp, int kflag)
unsigned int kip_count, kstk_count;
if (!hflag)
xo_emit("{T:/%5s %6s %-16s %-16s %-29s}\n", "PID", "TID", "COMM",
xo_emit("{T:/%5s %6s %-19s %-19s %-29s}\n", "PID", "TID", "COMM",
"TDNAME", "KSTACK");
kkstp = kkstp_free = procstat_getkstack(procstat, kipp, &kstk_count);
@ -208,10 +208,9 @@ procstat_kstack(struct procstat *procstat, struct kinfo_proc *kipp, int kflag)
xo_emit("{k:process_id/%5d/%d} ", kipp->ki_pid);
xo_emit("{:thread_id/%6d/%d} ", kkstp->kkst_tid);
xo_emit("{:command/%-16s/%s} ", kipp->ki_comm);
xo_emit("{:thread_name/%-16s/%s} ", (strlen(kipp->ki_tdname) &&
(strcmp(kipp->ki_comm, kipp->ki_tdname) != 0)) ?
kipp->ki_tdname : "-");
xo_emit("{:command/%-19s/%s} ", kipp->ki_comm);
xo_emit("{:thread_name/%-19s/%s} ",
kinfo_proc_thread_name(kipp));
switch (kkstp->kkst_state) {
case KKST_STATE_RUNNING:

9
usr.bin/procstat/procstat_threads.c
View File

@ -49,7 +49,7 @@ procstat_threads(struct procstat *procstat, struct kinfo_proc *kipp)
char *threadid;
if (!hflag)
xo_emit("{T:/%5s %6s %-16s %-16s %2s %4s %-7s %-9s}\n", "PID",
xo_emit("{T:/%5s %6s %-19s %-19s %2s %4s %-7s %-9s}\n", "PID",
"TID", "COMM", "TDNAME", "CPU", "PRI", "STATE", "WCHAN");
xo_emit("{ek:process_id/%d}", kipp->ki_pid);
@ -71,11 +71,10 @@ procstat_threads(struct procstat *procstat, struct kinfo_proc *kipp)
xo_open_container(threadid);
xo_emit("{dk:process_id/%5d/%d} ", kipp->ki_pid);
xo_emit("{:thread_id/%6d/%d} ", kipp->ki_tid);
xo_emit("{d:command/%-16s/%s} ", strlen(kipp->ki_comm) ?
xo_emit("{d:command/%-19s/%s} ", strlen(kipp->ki_comm) ?
kipp->ki_comm : "-");
xo_emit("{:thread_name/%-16s/%s} ", (strlen(kipp->ki_tdname) &&
(strcmp(kipp->ki_comm, kipp->ki_tdname) != 0)) ?
kipp->ki_tdname : "-");
xo_emit("{:thread_name/%-19s/%s} ",
kinfo_proc_thread_name(kipp));
if (kipp->ki_oncpu != 255)
xo_emit("{:cpu/%3d/%d} ", kipp->ki_oncpu);
else if (kipp->ki_lastcpu != 255)

15
usr.bin/top/machine.c
View File

@ -991,8 +991,8 @@ format_next_process(caddr_t handle, char *(*get_userid)(int), int flags)
if (!(flags & FMT_SHOWARGS)) {
if (ps.thread && pp->ki_flag & P_HADTHREADS &&
pp->ki_tdname[0]) {
snprintf(cmdbuf, cmdlen, "%s{%s}", pp->ki_comm,
pp->ki_tdname);
snprintf(cmdbuf, cmdlen, "%s{%s%s}", pp->ki_comm,
pp->ki_tdname, pp->ki_moretdname);
} else {
snprintf(cmdbuf, cmdlen, "%s", pp->ki_comm);
}
@ -1004,7 +1004,8 @@ format_next_process(caddr_t handle, char *(*get_userid)(int), int flags)
if (ps.thread && pp->ki_flag & P_HADTHREADS &&
pp->ki_tdname[0]) {
snprintf(cmdbuf, cmdlen,
"[%s{%s}]", pp->ki_comm, pp->ki_tdname);
"[%s{%s%s}]", pp->ki_comm, pp->ki_tdname,
pp->ki_moretdname);
} else {
snprintf(cmdbuf, cmdlen,
"[%s]", pp->ki_comm);
@ -1052,8 +1053,9 @@ format_next_process(caddr_t handle, char *(*get_userid)(int), int flags)
if (ps.thread && pp->ki_flag & P_HADTHREADS &&
pp->ki_tdname[0])
snprintf(cmdbuf, cmdlen,
"%s (%s){%s}", argbuf, pp->ki_comm,
pp->ki_tdname);
"%s (%s){%s%s}", argbuf,
pp->ki_comm, pp->ki_tdname,
pp->ki_moretdname);
else
snprintf(cmdbuf, cmdlen,
"%s (%s)", argbuf, pp->ki_comm);
@ -1061,7 +1063,8 @@ format_next_process(caddr_t handle, char *(*get_userid)(int), int flags)
if (ps.thread && pp->ki_flag & P_HADTHREADS &&
pp->ki_tdname[0])
snprintf(cmdbuf, cmdlen,
"%s{%s}", argbuf, pp->ki_tdname);
"%s{%s%s}", argbuf, pp->ki_tdname,
pp->ki_moretdname);
else
strlcpy(cmdbuf, argbuf, cmdlen);
}