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| author | Povilas Kanapickas <povilas@radix.lt> | 2018-01-13 23:26:39 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2018-01-23 16:04:48 +0100 |
| commit | 1616fb8aca23fd7ba6b379b0fb38d3327d1e31d1 (patch) | |
| tree | 2c318a19f18b49a62d99d3f7438cf20212975082 /util-linux | |
| parent | 2b9a45b9e87c1c935cf0a992303313d62e72dc67 (diff) | |
| download | 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.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/util-linux/chrt.c b/util-linux/chrt.c index 2712ea3e3..e7abd4f5a 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); |