diff options
| author | Prarit Bhargava <prarit@redhat.com> | 2016-02-04 09:38:00 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-02-05 08:46:38 +0100 |
| commit | a6e4491c682a7b28574a62e6f311a0acec50b318 (patch) | |
| tree | 79ea7ec2a7d06bbd4d4900eaeb9f8e4852c21936 /kernel/profile.c | |
| parent | b37a05c083c85c2657dca9bbe1f5d79dccf756d5 (diff) | |
sched/isolcpus: Output warning when the 'isolcpus=' kernel parameter is invalid
The isolcpus= kernel boot parameter restricts userspace from scheduling on
the specified CPUs.
If a CPU is specified that is outside the range of 0 to nr_cpu_ids,
cpulist_parse() will return -ERANGE, return an empty cpulist, and
fail silently.
This patch adds an error message to isolated_cpu_setup() to indicate to
the user that something has gone awry, and returns 0 on error.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1454596680-10367-1-git-send-email-prarit@redhat.com
[ Twiddled some details. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/profile.c')
0 files changed, 0 insertions, 0 deletions