diff --git a/SOURCES/procps-ng-3.3.15-pidof-kernel-workers-option.patch b/SOURCES/procps-ng-3.3.15-pidof-kernel-workers-option.patch
new file mode 100644
index 0000000..b801971
--- /dev/null
+++ b/SOURCES/procps-ng-3.3.15-pidof-kernel-workers-option.patch
@@ -0,0 +1,112 @@
+From d9b3415d2a761cb7669a67f5309665335d5eb4c4 Mon Sep 17 00:00:00 2001
+From: rpm-build <rpm-build>
+Date: Mon, 9 Nov 2020 16:10:22 +0100
+Subject: [PATCH] New '-w' option for kernel workers.
+
+---
+ pidof.1 | 3 +++
+ pidof.c | 17 ++++++++++++-----
+ 2 files changed, 15 insertions(+), 5 deletions(-)
+
+diff --git a/pidof.1 b/pidof.1
+index 1368704..c85c088 100644
+--- a/pidof.1
++++ b/pidof.1
+@@ -45,6 +45,9 @@ the current root directory of processes they do not own.
+ .IP \-x
+ Scripts too - this causes the program to also return process id's of
+ shells running the named scripts.
++.IP \-w
++Show also processes that do not have visible command line (e.g. kernel
++worker threads).
+ .IP "-o \fIomitpid\fP"
+ Tells \fIpidof\fP to omit processes with that process id. The special
+ pid \fB%PPID\fP can be used to name the parent process of the \fIpidof\fP
+diff --git a/pidof.c b/pidof.c
+index 94e19bb..7fdf27a 100644
+--- a/pidof.c
++++ b/pidof.c
+@@ -55,6 +55,8 @@ static char *program = NULL;
+ static int opt_single_shot = 0; /* -s */
+ static int opt_scripts_too = 0; /* -x */
+ static int opt_rootdir_check = 0; /* -c */
++static int opt_with_workers = 0; /* -w */
++
+
+ static char *pidof_root = NULL;
+
+@@ -69,6 +71,7 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
+ fputs(_(" -s, --single-shot return one PID only\n"), fp);
+ fputs(_(" -c, --check-root omit processes with different root\n"), fp);
+ fputs(_(" -x also find shells running the named scripts\n"), fp);
++ fputs(_(" -w, --with-workers show kernel workers too\n"), fp);
+ fputs(_(" -o, --omit-pid <PID,...> omit processes with PID\n"), fp);
+ fputs(_(" -S, --separator SEP use SEP as separator put between PIDs"), fp);
+ fputs(USAGE_SEPARATOR, fp);
+@@ -142,7 +145,6 @@ static void select_procs (void)
+ static int size = 0;
+ char *cmd_arg0, *cmd_arg0base;
+ char *cmd_arg1, *cmd_arg1base;
+- char *stat_cmd;
+ char *program_base;
+ char *root_link;
+ char *exe_link;
+@@ -168,10 +170,9 @@ static void select_procs (void)
+ }
+ }
+
+- if (!is_omitted(task.XXXID)) {
++ if (!is_omitted(task.XXXID) && ((task.cmdline && *task.cmdline) || opt_with_workers)) {
+
+ cmd_arg0 = (task.cmdline && *task.cmdline) ? *task.cmdline : "\0";
+- stat_cmd = task.cmd ? task.cmd : "\0";
+
+ /* processes starting with '-' are login shells */
+ if (*cmd_arg0 == '-') {
+@@ -193,7 +194,7 @@ static void select_procs (void)
+ !strcmp(program_base, cmd_arg0) ||
+ !strcmp(program, cmd_arg0) ||
+
+- !strcmp(program, stat_cmd) ||
++ (opt_with_workers && !strcmp(program, task.cmd)) ||
+
+ !strcmp(program, exe_link_base) ||
+ !strcmp(program, exe_link))
+@@ -293,13 +294,14 @@ int main (int argc, char **argv)
+ int first_pid = 1;
+
+ const char *separator = " ";
+- const char *opts = "scnxmo:S:?Vh";
++ const char *opts = "scnxwmo:S:?Vh";
+
+ static const struct option longopts[] = {
+ {"check-root", no_argument, NULL, 'c'},
+ {"single-shot", no_argument, NULL, 's'},
+ {"omit-pid", required_argument, NULL, 'o'},
+ {"separator", required_argument, NULL, 's'},
++ {"with-workers", no_argument, NULL, 'w'},
+ {"help", no_argument, NULL, 'h'},
+ {"version", no_argument, NULL, 'V'},
+ {NULL, 0, NULL, 0}
+@@ -325,6 +327,9 @@ int main (int argc, char **argv)
+ case 'x':
+ opt_scripts_too = 1;
+ break;
++ case 'w':
++ opt_with_workers = 1;
++ break;
+ case 'c':
+ if (geteuid() == 0) {
+ opt_rootdir_check = 1;
+@@ -358,6 +363,8 @@ int main (int argc, char **argv)
+
+ program = argv[optind++];
+
++ if (*program == '\0') continue;
++
+ select_procs(); /* get the list of matching processes */
+
+ if (proc_count) {
+--
+2.25.4
+
diff --git a/SPECS/procps-ng.spec b/SPECS/procps-ng.spec
index e8631d7..c7178f7 100644
--- a/SPECS/procps-ng.spec
+++ b/SPECS/procps-ng.spec
@@ -4,7 +4,7 @@
Summary: System and process monitoring utilities
Name: procps-ng
Version: 3.3.15
-Release: 3%{?dist}
+Release: 3%{?dist}.1
License: GPL+ and GPLv2 and GPLv2+ and GPLv3+ and LGPLv2+
Group: Applications/System
URL: https://sourceforge.net/projects/procps-ng/
@@ -19,6 +19,7 @@ Source2: README.top
Patch1: procps-ng-3.3.15-pidof-show-worker-threads.patch
Patch2: procps-ng-3.3.15-pgrep-uid-conversion-overflow.patch
Patch3: procps-ng-3.3.15-vmstat-watch-manpage.patch
+Patch4: procps-ng-3.3.15-pidof-kernel-workers-option.patch
BuildRequires: ncurses-devel
BuildRequires: libtool
@@ -161,6 +162,10 @@ ln -s %{_bindir}/pidof %{buildroot}%{_sbindir}/pidof
%files i18n -f %{name}.lang
%changelog
+* Fri Jan 22 2021 Jan Rybar <jrybar@redhat.com> - 3.3.15-3.1
+- pidof: new option to show kernel worker threads
+- Resolves: rhbz#1919284
+
* Wed Jul 08 2020 Jan Rybar <jrybar@redhat.com> - 3.3.15-3
- pgrep: uid/gid conversion overflow
- vmstat: align manpage with procfs wording