diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 8f1695ad293..79a2c744c64 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -774,10 +774,11 @@ CapabilityBoundingSet=~CAP_B CAP_C
CPUAffinity=
Controls the CPU affinity of the executed processes. Takes a list of CPU indices or ranges
- separated by either whitespace or commas. CPU ranges are specified by the lower and upper CPU indices separated
- by a dash. This option may be specified more than once, in which case the specified CPU affinity masks are
- merged. If the empty string is assigned, the mask is reset, all assignments prior to this will have no
- effect. See
+ separated by either whitespace or commas. Alternatively, takes a special "numa" value in which case systemd
+ automatically derives allowed CPU range based on the value of NUMAMask= option. CPU ranges
+ are specified by the lower and upper CPU indices separated by a dash. This option may be specified more than
+ once, in which case the specified CPU affinity masks are merged. If the empty string is assigned, the mask
+ is reset, all assignments prior to this will have no effect. See
sched_setaffinity2 for
details.
diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
index d8ba3e5d924..e8be76e315c 100644
--- a/src/core/dbus-execute.c
+++ b/src/core/dbus-execute.c
@@ -56,6 +56,8 @@ static BUS_DEFINE_PROPERTY_GET2(property_get_ioprio_priority, "i", ExecContext,
static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_empty_string, "s", NULL);
static BUS_DEFINE_PROPERTY_GET_REF(property_get_syslog_level, "i", int, LOG_PRI);
static BUS_DEFINE_PROPERTY_GET_REF(property_get_syslog_facility, "i", int, LOG_FAC);
+static BUS_DEFINE_PROPERTY_GET(property_get_cpu_affinity_from_numa, "b", ExecContext, exec_context_get_cpu_affinity_from_numa);
+
static int property_get_environment_files(
sd_bus *bus,
@@ -213,6 +215,7 @@ static int property_get_cpu_affinity(
sd_bus_error *error) {
ExecContext *c = userdata;
+ _cleanup_(cpu_set_reset) CPUSet s = {};
_cleanup_free_ uint8_t *array = NULL;
size_t allocated;
@@ -220,7 +223,16 @@ static int property_get_cpu_affinity(
assert(reply);
assert(c);
- (void) cpu_set_to_dbus(&c->cpu_set, &array, &allocated);
+ if (c->cpu_affinity_from_numa) {
+ int r;
+
+ r = numa_to_cpu_set(&c->numa_policy, &s);
+ if (r < 0)
+ return r;
+ }
+
+ (void) cpu_set_to_dbus(c->cpu_affinity_from_numa ? &s : &c->cpu_set, &array, &allocated);
+
return sd_bus_message_append_array(reply, 'y', array, allocated);
}
@@ -741,6 +753,7 @@ const sd_bus_vtable bus_exec_vtable[] = {
SD_BUS_PROPERTY("CPUSchedulingPolicy", "i", property_get_cpu_sched_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("CPUSchedulingPriority", "i", property_get_cpu_sched_priority, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("CPUAffinity", "ay", property_get_cpu_affinity, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("CPUAffinityFromNUMA", "b", property_get_cpu_affinity_from_numa, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NUMAPolicy", "i", property_get_numa_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NUMAMask", "ay", property_get_numa_mask, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
@@ -1770,6 +1783,20 @@ int bus_exec_context_set_transient_property(
return 1;
+ } else if (streq(name, "CPUAffinityFromNUMA")) {
+ int q;
+
+ r = sd_bus_message_read_basic(message, 'b', &q);
+ if (r < 0)
+ return r;
+
+ if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
+ c->cpu_affinity_from_numa = q;
+ unit_write_settingf(u, flags, name, "%s=%s", "CPUAffinity", "numa");
+ }
+
+ return 1;
+
} else if (streq(name, "NUMAPolicy")) {
int32_t type;
@@ -1784,6 +1811,7 @@ int bus_exec_context_set_transient_property(
c->numa_policy.type = type;
return 1;
+
} else if (streq(name, "Nice")) {
int32_t q;
diff --git a/src/core/execute.c b/src/core/execute.c
index 00a2f2e17e4..8e1e77b4b2a 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -3021,6 +3021,33 @@ static int exec_parameters_get_cgroup_path(const ExecParameters *params, char **
return using_subcgroup;
}
+static int exec_context_cpu_affinity_from_numa(const ExecContext *c, CPUSet *ret) {
+ _cleanup_(cpu_set_reset) CPUSet s = {};
+ int r;
+
+ assert(c);
+ assert(ret);
+
+ if (!c->numa_policy.nodes.set) {
+ log_debug("Can't derive CPU affinity mask from NUMA mask because NUMA mask is not set, ignoring");
+ return 0;
+ }
+
+ r = numa_to_cpu_set(&c->numa_policy, &s);
+ if (r < 0)
+ return r;
+
+ cpu_set_reset(ret);
+
+ return cpu_set_add_all(ret, &s);
+}
+
+bool exec_context_get_cpu_affinity_from_numa(const ExecContext *c) {
+ assert(c);
+
+ return c->cpu_affinity_from_numa;
+}
+
static int exec_child(
Unit *unit,
const ExecCommand *command,
@@ -3318,11 +3345,26 @@ static int exec_child(
}
}
- if (context->cpu_set.set)
- if (sched_setaffinity(0, context->cpu_set.allocated, context->cpu_set.set) < 0) {
+ if (context->cpu_affinity_from_numa || context->cpu_set.set) {
+ _cleanup_(cpu_set_reset) CPUSet converted_cpu_set = {};
+ const CPUSet *cpu_set;
+
+ if (context->cpu_affinity_from_numa) {
+ r = exec_context_cpu_affinity_from_numa(context, &converted_cpu_set);
+ if (r < 0) {
+ *exit_status = EXIT_CPUAFFINITY;
+ return log_unit_error_errno(unit, r, "Failed to derive CPU affinity mask from NUMA mask: %m");
+ }
+
+ cpu_set = &converted_cpu_set;
+ } else
+ cpu_set = &context->cpu_set;
+
+ if (sched_setaffinity(0, cpu_set->allocated, cpu_set->set) < 0) {
*exit_status = EXIT_CPUAFFINITY;
return log_unit_error_errno(unit, errno, "Failed to set up CPU affinity: %m");
}
+ }
if (mpol_is_valid(numa_policy_get_type(&context->numa_policy))) {
r = apply_numa_policy(&context->numa_policy);
diff --git a/src/core/execute.h b/src/core/execute.h
index 6cfa70679f9..4baf5b1a405 100644
--- a/src/core/execute.h
+++ b/src/core/execute.h
@@ -182,6 +182,7 @@ struct ExecContext {
CPUSet cpu_set;
NUMAPolicy numa_policy;
+ bool cpu_affinity_from_numa;
ExecInput std_input;
ExecOutput std_output;
@@ -406,6 +407,8 @@ void exec_runtime_vacuum(Manager *m);
void exec_params_clear(ExecParameters *p);
+bool exec_context_get_cpu_affinity_from_numa(const ExecContext *c);
+
const char* exec_output_to_string(ExecOutput i) _const_;
ExecOutput exec_output_from_string(const char *s) _pure_;
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 71a9873da46..646364eb898 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -1330,13 +1330,25 @@ int config_parse_exec_cpu_affinity(const char *unit,
void *userdata) {
ExecContext *c = data;
+ int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
- return parse_cpu_set_extend(rvalue, &c->cpu_set, true, unit, filename, line, lvalue);
+ if (streq(rvalue, "numa")) {
+ c->cpu_affinity_from_numa = true;
+ cpu_set_reset(&c->cpu_set);
+
+ return 0;
+ }
+
+ r = parse_cpu_set_extend(rvalue, &c->cpu_set, true, unit, filename, line, lvalue);
+ if (r >= 0)
+ c->cpu_affinity_from_numa = false;
+
+ return r;
}
int config_parse_capability_set(
diff --git a/src/shared/bus-unit-util.c b/src/shared/bus-unit-util.c
index 98cf51aeda5..a30876c1a13 100644
--- a/src/shared/bus-unit-util.c
+++ b/src/shared/bus-unit-util.c
@@ -29,6 +29,7 @@
#include "signal-util.h"
#include "socket-util.h"
#include "sort-util.h"
+#include "stdio-util.h"
#include "string-util.h"
#include "syslog-util.h"
#include "terminal-util.h"
@@ -1103,6 +1104,13 @@ static int bus_append_execute_property(sd_bus_message *m, const char *field, con
_cleanup_free_ uint8_t *array = NULL;
size_t allocated;
+ if (eq && streq(eq, "numa")) {
+ r = sd_bus_message_append(m, "(sv)", "CPUAffinityFromNUMA", "b", true);
+ if (r < 0)
+ return bus_log_create_error(r);
+ return r;
+ }
+
r = parse_cpu_set(eq, &cpuset);
if (r < 0)
return log_error_errno(r, "Failed to parse %s value: %s", field, eq);
diff --git a/src/shared/cpu-set-util.c b/src/shared/cpu-set-util.c
index 97c16ebb8cd..9b9238362f2 100644
--- a/src/shared/cpu-set-util.c
+++ b/src/shared/cpu-set-util.c
@@ -131,7 +131,7 @@ int cpu_set_add_all(CPUSet *a, const CPUSet *b) {
return r;
}
- return 0;
+ return 1;
}
int parse_cpu_set_full(
@@ -216,7 +216,7 @@ int parse_cpu_set_extend(
if (!old->set) {
*old = cpuset;
cpuset = (CPUSet) {};
- return 0;
+ return 1;
}
return cpu_set_add_all(old, &cpuset);
diff --git a/src/test/test-cpu-set-util.c b/src/test/test-cpu-set-util.c
index e1dd2eb32ba..450e19e06f2 100644
--- a/src/test/test-cpu-set-util.c
+++ b/src/test/test-cpu-set-util.c
@@ -216,12 +216,12 @@ static void test_parse_cpu_set_extend(void) {
log_info("/* %s */", __func__);
- assert_se(parse_cpu_set_extend("1 3", &c, true, NULL, "fake", 1, "CPUAffinity") == 0);
+ assert_se(parse_cpu_set_extend("1 3", &c, true, NULL, "fake", 1, "CPUAffinity") == 1);
assert_se(CPU_COUNT_S(c.allocated, c.set) == 2);
assert_se(s1 = cpu_set_to_string(&c));
log_info("cpu_set_to_string: %s", s1);
- assert_se(parse_cpu_set_extend("4", &c, true, NULL, "fake", 1, "CPUAffinity") == 0);
+ assert_se(parse_cpu_set_extend("4", &c, true, NULL, "fake", 1, "CPUAffinity") == 1);
assert_se(CPU_COUNT_S(c.allocated, c.set) == 3);
assert_se(s2 = cpu_set_to_string(&c));
log_info("cpu_set_to_string: %s", s2);
@@ -238,7 +238,7 @@ static void test_cpu_set_to_from_dbus(void) {
log_info("/* %s */", __func__);
- assert_se(parse_cpu_set_extend("1 3 8 100-200", &c, true, NULL, "fake", 1, "CPUAffinity") == 0);
+ assert_se(parse_cpu_set_extend("1 3 8 100-200", &c, true, NULL, "fake", 1, "CPUAffinity") == 1);
assert_se(s = cpu_set_to_string(&c));
log_info("cpu_set_to_string: %s", s);
assert_se(CPU_COUNT_S(c.allocated, c.set) == 104);
diff --git a/test/TEST-36-NUMAPOLICY/testsuite.sh b/test/TEST-36-NUMAPOLICY/testsuite.sh
index 4a2bede431a..bd04bb2efe6 100755
--- a/test/TEST-36-NUMAPOLICY/testsuite.sh
+++ b/test/TEST-36-NUMAPOLICY/testsuite.sh
@@ -279,6 +279,18 @@ else
# Maks must be ignored
grep -E "set_mempolicy\((MPOL_LOCAL|0x4 [^,]*), NULL" $straceLog
+ echo "Unit file CPUAffinity=NUMA support"
+ writeTestUnitNUMAPolicy "bind" "0"
+ echo "CPUAffinity=numa" >> $testUnitNUMAConf
+ systemctl daemon-reload
+ systemctl start $testUnit
+ systemctlCheckNUMAProperties $testUnit "bind" "0"
+ pid=$(systemctl show --value -p MainPID $testUnit)
+ cpulist=$(cat /sys/devices/system/node/node0/cpulist)
+ affinity_systemd=$(systemctl show --value -p CPUAffinity $testUnit)
+ [ $cpulist = $affinity_systemd ]
+ pid1StopUnit $testUnit
+
echo "systemd-run NUMAPolicy support"
runUnit='numa-systemd-run-test.service'
@@ -309,6 +321,12 @@ else
systemd-run -p NUMAPolicy=local -p NUMAMask=0 --unit $runUnit sleep 1000
systemctlCheckNUMAProperties $runUnit "local" ""
pid1StopUnit $runUnit
+
+ systemd-run -p NUMAPolicy=local -p NUMAMask=0 -p CPUAffinity=numa --unit $runUnit sleep 1000
+ systemctlCheckNUMAProperties $runUnit "local" ""
+ systemctl cat $runUnit | grep -q 'CPUAffinity=numa'
+ pid1StopUnit $runUnit
+
fi
# Cleanup