From: Laurent Dufour <ldufour@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
mpe@ellerman.id.au, npiggin@gmail.com,
christophe.leroy@csgroup.eu, tglx@linutronix.de,
dave.hansen@linux.intel.com, mingo@redhat.com, bp@alien8.de,
rui.zhang@intel.com
Subject: [PATCH v4 01/10] cpu/hotplug: remove dependancy against cpu_primary_thread_mask
Date: Wed, 5 Jul 2023 16:51:34 +0200 [thread overview]
Message-ID: <20230705145143.40545-2-ldufour@linux.ibm.com> (raw)
In-Reply-To: <20230705145143.40545-1-ldufour@linux.ibm.com>
The commit 18415f33e2ac ("cpu/hotplug: Allow "parallel" bringup up to
CPUHP_BP_KICK_AP_STATE") introduce a dependancy against a global variable
cpu_primary_thread_mask exported by the X86 code. This variable is only
used when CONFIG_HOTPLUG_PARALLEL is set.
Since cpuhp_get_primary_thread_mask() and cpuhp_smt_aware() are only used
when CONFIG_HOTPLUG_PARALLEL is set, don't define them when it is not set.
There is no functional change introduce by that patch.
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
---
kernel/cpu.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 88a7ede322bd..03309f2f35a4 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -650,22 +650,8 @@ bool cpu_smt_possible(void)
}
EXPORT_SYMBOL_GPL(cpu_smt_possible);
-static inline bool cpuhp_smt_aware(void)
-{
- return topology_smt_supported();
-}
-
-static inline const struct cpumask *cpuhp_get_primary_thread_mask(void)
-{
- return cpu_primary_thread_mask;
-}
#else
static inline bool cpu_smt_allowed(unsigned int cpu) { return true; }
-static inline bool cpuhp_smt_aware(void) { return false; }
-static inline const struct cpumask *cpuhp_get_primary_thread_mask(void)
-{
- return cpu_present_mask;
-}
#endif
static inline enum cpuhp_state
@@ -1793,6 +1779,16 @@ static int __init parallel_bringup_parse_param(char *arg)
}
early_param("cpuhp.parallel", parallel_bringup_parse_param);
+static inline bool cpuhp_smt_aware(void)
+{
+ return topology_smt_supported();
+}
+
+static inline const struct cpumask *cpuhp_get_primary_thread_mask(void)
+{
+ return cpu_primary_thread_mask;
+}
+
/*
* On architectures which have enabled parallel bringup this invokes all BP
* prepare states for each of the to be onlined APs first. The last state
--
2.41.0
next prev parent reply other threads:[~2023-07-05 14:52 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-05 14:51 [PATCH v4 00/10] Introduce SMT level and add PowerPC support Laurent Dufour
2023-07-05 14:51 ` Laurent Dufour [this message]
2023-07-05 14:51 ` [PATCH v4 02/10] cpu/SMT: Move SMT prototypes into cpu_smt.h Laurent Dufour
2023-07-05 14:51 ` [PATCH v4 03/10] cpu/SMT: Move smt/control simple exit cases earlier Laurent Dufour
2023-07-05 14:51 ` [PATCH v4 04/10] cpu/SMT: Store the current/max number of threads Laurent Dufour
2023-07-05 14:51 ` [PATCH v4 05/10] cpu/SMT: Remove topology_smt_supported() Laurent Dufour
2023-07-05 14:51 ` [PATCH v4 06/10] cpu/SMT: Create topology_smt_thread_allowed() Laurent Dufour
2023-07-05 14:51 ` [PATCH v4 07/10] cpu/SMT: Allow enabling partial SMT states via sysfs Laurent Dufour
2024-04-08 14:13 ` Michal Suchánek
2023-07-05 14:51 ` [PATCH v4 08/10] powerpc/pseries: Initialise CPU hotplug callbacks earlier Laurent Dufour
2023-08-14 10:51 ` Srikar Dronamraju
2023-07-05 14:51 ` [PATCH v4 09/10] powerpc: Add HOTPLUG_SMT support Laurent Dufour
2023-08-14 10:52 ` Srikar Dronamraju
2023-07-05 14:51 ` [PATCH v4 10/10] powerpc/pseries: Honour current SMT state when DLPAR onlining CPUs Laurent Dufour
2023-08-14 10:53 ` Srikar Dronamraju
2023-07-09 15:25 ` [PATCH v4 00/10] Introduce SMT level and add PowerPC support Zhang, Rui
2023-07-10 9:08 ` Laurent Dufour
2023-07-28 7:40 ` Thomas Gleixner
2023-07-28 14:23 ` Zhang, Rui
2023-07-28 14:51 ` Thomas Gleixner
2023-07-28 7:58 ` Thomas Gleixner
2023-07-31 11:55 ` Laurent Dufour
2023-08-10 6:23 ` Michael Ellerman
2023-08-10 8:51 ` Laurent Dufour
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