From: Yury Norov <yury.norov@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Yury Norov <yury.norov@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Andrew Morton <akpm@linux-foundation.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E . McKenney" <paulmck@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
Dmitry Vyukov <dvyukov@google.com>,
Valentin Schneider <vschneid@redhat.com>,
Sander Vanheule <sander@svanheule.net>,
Alexey Klimov <klimov.linux@gmail.com>,
Eric Biggers <ebiggers@google.com>
Subject: [PATCH 2/4] lib/cpumask: delete misleading comment
Date: Mon, 29 Aug 2022 09:57:46 -0700 [thread overview]
Message-ID: <20220829165748.1008477-3-yury.norov@gmail.com> (raw)
In-Reply-To: <20220829165748.1008477-1-yury.norov@gmail.com>
The comment says that HOTPLUG config option enables all cpus in
cpu_possible_mask up to NR_CPUs. This is wrong. Even if HOTPLUG is
enabled, the mask is populated on boot with respect to ACPI/DT records.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
include/linux/cpumask.h | 4 ----
1 file changed, 4 deletions(-)
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index bd047864c7ac..f70bf9ffa9d3 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -67,10 +67,6 @@ extern unsigned int nr_cpu_ids;
* cpu_online_mask is the dynamic subset of cpu_present_mask,
* indicating those CPUs available for scheduling.
*
- * If HOTPLUG is enabled, then cpu_possible_mask is forced to have
- * all NR_CPUS bits set, otherwise it is just the set of CPUs that
- * ACPI reports present at boot.
- *
* If HOTPLUG is enabled, then cpu_present_mask varies dynamically,
* depending on what ACPI reports as currently plugged in, otherwise
* cpu_present_mask is just a copy of cpu_possible_mask.
--
2.34.1
next prev parent reply other threads:[~2022-08-29 16:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 16:57 [PATCH 0/4] cpumask: cleanup nr_cpu_ids vs nr_cpumask_bits mess Yury Norov
2022-08-29 16:57 ` [PATCH 1/4] smp: add set_nr_cpu_ids() Yury Norov
2022-08-29 16:57 ` Yury Norov [this message]
2022-08-29 16:57 ` [PATCH 3/4] lib/cpumask: deprecate nr_cpumask_bits Yury Norov
2022-08-29 16:57 ` [PATCH 4/4] lib/cpumask: add FORCE_NR_CPUS config option Yury Norov
2022-08-29 17:02 ` Andy Shevchenko
[not found] ` <202208310215.C2IzssKr-lkp@intel.com>
2022-08-30 21:02 ` Yury Norov
2022-09-02 17:31 ` Yury Norov
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