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authorPovilas Kanapickas2018-01-13 23:26:39 +0200
committerDenys Vlasenko2018-01-23 16:04:48 +0100
commit1616fb8aca23fd7ba6b379b0fb38d3327d1e31d1 (patch)
tree2c318a19f18b49a62d99d3f7438cf20212975082 /util-linux
parent2b9a45b9e87c1c935cf0a992303313d62e72dc67 (diff)
downloadbusybox-1616fb8aca23fd7ba6b379b0fb38d3327d1e31d1.zip
busybox-1616fb8aca23fd7ba6b379b0fb38d3327d1e31d1.tar.gz
chrt: add support for SCHED_BATCH
Signed-off-by: Povilas Kanapickas <povilas@radix.lt> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/chrt.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/util-linux/chrt.c b/util-linux/chrt.c
index 2712ea3..e7abd4f 100644
--- a/util-linux/chrt.c
+++ b/util-linux/chrt.c
@@ -17,13 +17,14 @@
//kbuild:lib-$(CONFIG_CHRT) += chrt.o
//usage:#define chrt_trivial_usage
-//usage: "[-prfom] [PRIO] [PID | PROG ARGS]"
+//usage: "[-prfomb] [PRIO] [PID | PROG ARGS]"
//usage:#define chrt_full_usage "\n\n"
//usage: "Change scheduling priority and class for a process\n"
//usage: "\n -p Operate on PID"
//usage: "\n -r Set SCHED_RR class"
//usage: "\n -f Set SCHED_FIFO class"
//usage: "\n -o Set SCHED_OTHER class"
+//usage: "\n -b Set SCHED_BATCH class"
//usage: "\n -m Show min/max priorities"
//usage:
//usage:#define chrt_example_usage
@@ -40,11 +41,11 @@ static const struct {
} policies[] = {
{SCHED_OTHER, "SCHED_OTHER"},
{SCHED_FIFO, "SCHED_FIFO"},
- {SCHED_RR, "SCHED_RR"}
+ {SCHED_RR, "SCHED_RR"},
+ {SCHED_BATCH, "SCHED_BATCH"}
};
//TODO: add
-// -b, SCHED_BATCH
// -i, SCHED_IDLE
static void show_min_max(int pol)
@@ -64,6 +65,7 @@ static void show_min_max(int pol)
#define OPT_r (1<<2)
#define OPT_f (1<<3)
#define OPT_o (1<<4)
+#define OPT_b (1<<5)
int chrt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int chrt_main(int argc UNUSED_PARAM, char **argv)
@@ -77,11 +79,12 @@ int chrt_main(int argc UNUSED_PARAM, char **argv)
int policy = SCHED_RR;
/* only one policy accepted */
- opt = getopt32(argv, "^+" "mprfo" "\0" "r--fo:f--ro:o--rf");
+ opt = getopt32(argv, "^+" "mprfob" "\0" "r--fob:f--rob:o--rfb:b--rfo");
if (opt & OPT_m) { /* print min/max and exit */
show_min_max(SCHED_FIFO);
show_min_max(SCHED_RR);
show_min_max(SCHED_OTHER);
+ show_min_max(SCHED_BATCH);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (opt & OPT_r)
@@ -90,6 +93,8 @@ int chrt_main(int argc UNUSED_PARAM, char **argv)
policy = SCHED_FIFO;
if (opt & OPT_o)
policy = SCHED_OTHER;
+ if (opt & OPT_b)
+ policy = SCHED_BATCH;
argv += optind;
if (!argv[0])
@@ -136,7 +141,8 @@ int chrt_main(int argc UNUSED_PARAM, char **argv)
[...] SCHED_OTHER or SCHED_BATCH must be assigned static priority 0.
[...] SCHED_FIFO or SCHED_RR can have static priority in 1..99 range.
*/
- sp.sched_priority = xstrtou_range(priority, 0, policy != SCHED_OTHER ? 1 : 0, 99);
+ sp.sched_priority = xstrtou_range(priority, 0,
+ (policy != SCHED_OTHER && policy != SCHED_BATCH) ? 1 : 0, 99);
if (sched_setscheduler(pid, policy, &sp) < 0)
bb_perror_msg_and_die("can't %cet pid %d's policy", 's', (int)pid);