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-rw-r--r--src/cgtop/cgtop.c107
1 files changed, 89 insertions, 18 deletions
diff --git a/src/cgtop/cgtop.c b/src/cgtop/cgtop.c
index 1c94bea31a..7a0399d8f2 100644
--- a/src/cgtop/cgtop.c
+++ b/src/cgtop/cgtop.c
@@ -45,7 +45,7 @@ typedef struct Group {
bool memory_valid:1;
bool io_valid:1;
- unsigned n_tasks;
+ uint64_t n_tasks;
unsigned cpu_iteration;
nsec_t cpu_usage;
@@ -65,7 +65,12 @@ static unsigned arg_iterations = (unsigned) -1;
static bool arg_batch = false;
static bool arg_raw = false;
static usec_t arg_delay = 1*USEC_PER_SEC;
-static bool arg_kernel_threads = false;
+
+enum {
+ COUNT_PIDS,
+ COUNT_USERSPACE_PROCESSES,
+ COUNT_ALL_PROCESSES,
+} arg_count = COUNT_PIDS;
static bool arg_recursive = true;
static enum {
@@ -73,7 +78,7 @@ static enum {
ORDER_TASKS,
ORDER_CPU,
ORDER_MEMORY,
- ORDER_IO
+ ORDER_IO,
} arg_order = ORDER_CPU;
static enum {
@@ -153,7 +158,7 @@ static int process(
}
}
- if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) {
+ if (streq(controller, SYSTEMD_CGROUP_CONTROLLER) && IN_SET(arg_count, COUNT_ALL_PROCESSES, COUNT_USERSPACE_PROCESSES)) {
_cleanup_fclose_ FILE *f = NULL;
pid_t pid;
@@ -166,7 +171,7 @@ static int process(
g->n_tasks = 0;
while (cg_read_pid(f, &pid) > 0) {
- if (!arg_kernel_threads && is_kernel_thread(pid) > 0)
+ if (arg_count == COUNT_USERSPACE_PROCESSES && is_kernel_thread(pid) > 0)
continue;
g->n_tasks++;
@@ -175,6 +180,26 @@ static int process(
if (g->n_tasks > 0)
g->n_tasks_valid = true;
+ } else if (streq(controller, "pids") && arg_count == COUNT_PIDS) {
+ _cleanup_free_ char *p = NULL, *v = NULL;
+
+ r = cg_get_path(controller, path, "pids.current", &p);
+ if (r < 0)
+ return r;
+
+ r = read_one_line_file(p, &v);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+
+ r = safe_atou64(v, &g->n_tasks);
+ if (r < 0)
+ return r;
+
+ if (g->n_tasks > 0)
+ g->n_tasks_valid = true;
+
} else if (streq(controller, "cpuacct") && cg_unified() <= 0) {
_cleanup_free_ char *p = NULL, *v = NULL;
uint64_t new_usage;
@@ -371,6 +396,7 @@ static int refresh_one(
return r;
if (arg_recursive &&
+ IN_SET(arg_count, COUNT_ALL_PROCESSES, COUNT_USERSPACE_PROCESSES) &&
child &&
child->n_tasks_valid &&
streq(controller, SYSTEMD_CGROUP_CONTROLLER)) {
@@ -409,6 +435,9 @@ static int refresh(const char *root, Hashmap *a, Hashmap *b, unsigned iteration)
r = refresh_one("blkio", root, a, b, iteration, 0, NULL);
if (r < 0)
return r;
+ r = refresh_one("pids", root, a, b, iteration, 0, NULL);
+ if (r < 0)
+ return r;
return 0;
}
@@ -549,7 +578,7 @@ static void display(Hashmap *a) {
printf("%s%-*s%s %s%7s%s %s%s%s %s%8s%s %s%8s%s %s%8s%s\n\n",
arg_order == ORDER_PATH ? ON : "", path_columns, "Control Group",
arg_order == ORDER_PATH ? OFF : "",
- arg_order == ORDER_TASKS ? ON : "", "Tasks",
+ arg_order == ORDER_TASKS ? ON : "", arg_count == COUNT_PIDS ? "Tasks" : arg_count == COUNT_USERSPACE_PROCESSES ? "Procs" : "Proc+",
arg_order == ORDER_TASKS ? OFF : "",
arg_order == ORDER_CPU ? ON : "", buffer,
arg_order == ORDER_CPU ? OFF : "",
@@ -576,7 +605,7 @@ static void display(Hashmap *a) {
printf("%-*s", path_columns, ellipsized ?: path);
if (g->n_tasks_valid)
- printf(" %7u", g->n_tasks);
+ printf(" %7" PRIu64, g->n_tasks);
else
fputs(" -", stdout);
@@ -602,15 +631,16 @@ static void help(void) {
" -h --help Show this help\n"
" --version Show package version\n"
" -p --order=path Order by path\n"
- " -t --order=tasks Order by number of tasks\n"
+ " -t --order=tasks Order by number of tasks/processes\n"
" -c --order=cpu Order by CPU load (default)\n"
" -m --order=memory Order by memory load\n"
" -i --order=io Order by IO load\n"
" -r --raw Provide raw (not human-readable) numbers\n"
" --cpu=percentage Show CPU usage as percentage (default)\n"
" --cpu=time Show CPU usage as time\n"
- " -k Include kernel threads in task count\n"
- " --recursive=BOOL Sum up task count recursively\n"
+ " -P Count userspace processes instead of tasks (excl. kernel)\n"
+ " -k Count all processes instead of tasks (incl. kernel)\n"
+ " --recursive=BOOL Sum up process count recursively\n"
" -d --delay=DELAY Delay between updates\n"
" -n --iterations=N Run for N iterations before exiting\n"
" -b --batch Run in batch mode, accepting no input\n"
@@ -642,12 +672,13 @@ static int parse_argv(int argc, char *argv[]) {
{}
};
+ bool recursive_unset = false;
int c, r;
assert(argc >= 1);
assert(argv);
- while ((c = getopt_long(argc, argv, "hptcmin:brd:k", options, NULL)) >= 0)
+ while ((c = getopt_long(argc, argv, "hptcmin:brd:kP", options, NULL)) >= 0)
switch (c) {
@@ -748,7 +779,11 @@ static int parse_argv(int argc, char *argv[]) {
break;
case 'k':
- arg_kernel_threads = true;
+ arg_count = COUNT_ALL_PROCESSES;
+ break;
+
+ case 'P':
+ arg_count = COUNT_USERSPACE_PROCESSES;
break;
case ARG_RECURSIVE:
@@ -759,6 +794,7 @@ static int parse_argv(int argc, char *argv[]) {
}
arg_recursive = r;
+ recursive_unset = r == 0;
break;
case '?':
@@ -773,9 +809,23 @@ static int parse_argv(int argc, char *argv[]) {
return -EINVAL;
}
+ if (recursive_unset && arg_count == COUNT_PIDS) {
+ log_error("Non-recursive counting is only supported when counting processes, not tasks. Use -P or -k.");
+ return -EINVAL;
+ }
+
return 1;
}
+static const char* counting_what(void) {
+ if (arg_count == COUNT_PIDS)
+ return "tasks";
+ else if (arg_count == COUNT_ALL_PROCESSES)
+ return "all processes (incl. kernel)";
+ else
+ return "userspace processes (excl. kernel)";
+}
+
int main(int argc, char *argv[]) {
int r;
Hashmap *a = NULL, *b = NULL;
@@ -783,10 +833,19 @@ int main(int argc, char *argv[]) {
usec_t last_refresh = 0;
bool quit = false, immediate_refresh = false;
_cleanup_free_ char *root = NULL;
+ CGroupMask mask;
log_parse_environment();
log_open();
+ r = cg_mask_supported(&mask);
+ if (r < 0) {
+ log_error_errno(r, "Failed to determine supported controllers: %m");
+ goto finish;
+ }
+
+ arg_count = (mask & CGROUP_MASK_PIDS) ? COUNT_PIDS : COUNT_USERSPACE_PROCESSES;
+
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
@@ -899,15 +958,26 @@ int main(int argc, char *argv[]) {
break;
case 'k':
- arg_kernel_threads = !arg_kernel_threads;
- fprintf(stdout, "\nCounting kernel threads: %s.", yes_no(arg_kernel_threads));
+ arg_count = arg_count != COUNT_ALL_PROCESSES ? COUNT_ALL_PROCESSES : COUNT_PIDS;
+ fprintf(stdout, "\nCounting: %s.", counting_what());
+ fflush(stdout);
+ sleep(1);
+ break;
+
+ case 'P':
+ arg_count = arg_count != COUNT_USERSPACE_PROCESSES ? COUNT_USERSPACE_PROCESSES : COUNT_PIDS;
+ fprintf(stdout, "\nCounting: %s.", counting_what());
fflush(stdout);
sleep(1);
break;
case 'r':
- arg_recursive = !arg_recursive;
- fprintf(stdout, "\nRecursive task counting: %s", yes_no(arg_recursive));
+ if (arg_count == COUNT_PIDS)
+ fprintf(stdout, "\n\aCannot toggle recursive counting, not available in task counting mode.");
+ else {
+ arg_recursive = !arg_recursive;
+ fprintf(stdout, "\nRecursive process counting: %s", yes_no(arg_recursive));
+ }
fflush(stdout);
sleep(1);
break;
@@ -939,9 +1009,10 @@ int main(int argc, char *argv[]) {
case '?':
case 'h':
fprintf(stdout,
- "\t<" ON "p" OFF "> By path; <" ON "t" OFF "> By tasks; <" ON "c" OFF "> By CPU; <" ON "m" OFF "> By memory; <" ON "i" OFF "> By I/O\n"
+ "\t<" ON "p" OFF "> By path; <" ON "t" OFF "> By tasks/procs; <" ON "c" OFF "> By CPU; <" ON "m" OFF "> By memory; <" ON "i" OFF "> By I/O\n"
"\t<" ON "+" OFF "> Inc. delay; <" ON "-" OFF "> Dec. delay; <" ON "%%" OFF "> Toggle time; <" ON "SPACE" OFF "> Refresh\n"
- "\t<" ON "k" OFF "> Count kernel threads; <" ON "r" OFF "> Count recursively; <" ON "q" OFF "> Quit");
+ "\t<" ON "P" OFF "> Toggle count userspace processes; <" ON "k" OFF "> Toggle count all processes\n"
+ "\t<" ON "r" OFF "> Count processes recursively; <" ON "q" OFF "> Quit");
fflush(stdout);
sleep(3);
break;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 17:42:53 +0000