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Code Issues Releases Activity

numactl: fix CPU affinity when modifying an existing process or thread

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numactl was only modifying its own CPU affinity, which is fine
when creating a new process, but not very helpful when modifying
an existing processes.

Reviewed by:	adrian
Sponsored by:	Dell Inc.
Differential Revision:	https://reviews.freebsd.org/D4927
This commit is contained in:
Eric van Gyzen 2016-01-14 01:34:41 +00:00
parent c911734adb
commit 414dbbaf56
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=293864
1 changed files with 6 additions and 5 deletions
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11
usr.bin/numactl/numactl.c
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@ -133,7 +133,7 @@ usage(void)
}
static int
set_numa_domain_cpuaffinity(int cpu_domain)
set_numa_domain_cpuaffinity(int cpu_domain, cpuwhich_t which, id_t id)
{
cpuset_t set;
int error;
@ -142,8 +142,8 @@ set_numa_domain_cpuaffinity(int cpu_domain)
cpu_domain, sizeof(set), &set);
if (error != 0)
err(1, "cpuset_getaffinity");
error = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
sizeof(set), &set);
error = cpuset_setaffinity(CPU_LEVEL_WHICH, which, id, sizeof(set),
&set);
if (error != 0)
err(1, "cpuset_setaffinity");
@ -228,7 +228,8 @@ main(int argc, char *argv[])
/* If a CPU domain policy was given, include that too */
if (cpu_domain != -1)
(void) set_numa_domain_cpuaffinity(cpu_domain);
(void) set_numa_domain_cpuaffinity(cpu_domain,
CPU_WHICH_PID, -1);
errno = 0;
execvp(*argv, argv);
@ -278,7 +279,7 @@ main(int argc, char *argv[])
/* If a CPU domain policy was given, include that too */
if (cpu_domain != -1)
(void) set_numa_domain_cpuaffinity(cpu_domain);
(void) set_numa_domain_cpuaffinity(cpu_domain, which, id);
exit(0);
}