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From 42032749e61076b3d9e5004432073c2a5ea737ce Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Tue, 28 May 2019 21:28:31 +0200
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Subject: [PATCH] Move cpus_in_affinity_mask() to cpu-set-util.[ch]
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It just seems to fit better there and it's always better to have things
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in shared/ rather than basic/.
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(cherry picked from commit f44b3035d4a698aa0ce08a552199b54d43de3d85)
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Related: #1734787
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---
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src/basic/cpu-set-util.c | 34 ++++++++++++++++++++++++++++++++++
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src/basic/cpu-set-util.h | 2 ++
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src/basic/process-util.c | 5 ++---
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src/shared/condition.c | 1 +
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src/test/test-condition.c | 1 +
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5 files changed, 40 insertions(+), 3 deletions(-)
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diff --git a/src/basic/cpu-set-util.c b/src/basic/cpu-set-util.c
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index fe440f6381..1803539ac6 100644
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--- a/src/basic/cpu-set-util.c
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+++ b/src/basic/cpu-set-util.c
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@@ -204,3 +204,37 @@ int parse_cpu_set_extend(
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return cpu_set_add_all(old, &cpuset);
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}
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+
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+int cpus_in_affinity_mask(void) {
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+ size_t n = 16;
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+ int r;
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+
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+ for (;;) {
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+ cpu_set_t *c;
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+
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+ c = CPU_ALLOC(n);
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+ if (!c)
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+ return -ENOMEM;
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+
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+ if (sched_getaffinity(0, CPU_ALLOC_SIZE(n), c) >= 0) {
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+ int k;
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+
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+ k = CPU_COUNT_S(CPU_ALLOC_SIZE(n), c);
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+ CPU_FREE(c);
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+
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+ if (k <= 0)
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+ return -EINVAL;
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+
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+ return k;
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+ }
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+
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+ r = -errno;
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+ CPU_FREE(c);
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+
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+ if (r != -EINVAL)
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+ return r;
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+ if (n > SIZE_MAX/2)
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+ return -ENOMEM;
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+ n *= 2;
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+ }
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+}
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diff --git a/src/basic/cpu-set-util.h b/src/basic/cpu-set-util.h
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index eb31b362fe..9b026aca09 100644
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--- a/src/basic/cpu-set-util.h
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+++ b/src/basic/cpu-set-util.h
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@@ -49,3 +49,5 @@ int parse_cpu_set_extend(
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static inline int parse_cpu_set(const char *rvalue, CPUSet *cpu_set){
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return parse_cpu_set_full(rvalue, cpu_set, false, NULL, NULL, 0, NULL);
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}
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+
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+int cpus_in_affinity_mask(void);
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diff --git a/src/basic/process-util.c b/src/basic/process-util.c
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index 6dbeee9dda..0a4a747ba4 100644
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--- a/src/basic/process-util.c
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+++ b/src/basic/process-util.c
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@@ -4,7 +4,6 @@
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#include <errno.h>
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#include <limits.h>
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#include <linux/oom.h>
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-#include <sched.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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@@ -1474,7 +1473,7 @@ static const char *const ioprio_class_table[] = {
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[IOPRIO_CLASS_NONE] = "none",
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[IOPRIO_CLASS_RT] = "realtime",
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[IOPRIO_CLASS_BE] = "best-effort",
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- [IOPRIO_CLASS_IDLE] = "idle"
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+ [IOPRIO_CLASS_IDLE] = "idle",
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};
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DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(ioprio_class, int, IOPRIO_N_CLASSES);
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@@ -1495,7 +1494,7 @@ static const char* const sched_policy_table[] = {
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[SCHED_BATCH] = "batch",
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[SCHED_IDLE] = "idle",
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[SCHED_FIFO] = "fifo",
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- [SCHED_RR] = "rr"
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+ [SCHED_RR] = "rr",
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};
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DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(sched_policy, int, INT_MAX);
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diff --git a/src/shared/condition.c b/src/shared/condition.c
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index 2969a89b4e..b829f0528c 100644
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--- a/src/shared/condition.c
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+++ b/src/shared/condition.c
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@@ -21,6 +21,7 @@
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#include "cap-list.h"
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#include "cgroup-util.h"
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#include "condition.h"
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+#include "cpu-set-util.h"
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#include "efivars.h"
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#include "extract-word.h"
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#include "fd-util.h"
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diff --git a/src/test/test-condition.c b/src/test/test-condition.c
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index 7ce6ee80ea..24395dafc6 100644
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--- a/src/test/test-condition.c
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+++ b/src/test/test-condition.c
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@@ -13,6 +13,7 @@
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#include "audit-util.h"
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#include "cgroup-util.h"
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#include "condition.h"
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+#include "cpu-set-util.h"
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#include "efivars.h"
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#include "hostname-util.h"
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#include "id128-util.h"
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