linux-kernel - [tip: sched/urgent] sched/x86: Export 'percpu arch_freq

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Date: Fri, 31 May 2024 09:59:45 -0000
From: "tip-bot2 for Phil Auld" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Phil Auld <pauld@...hat.com>, Ingo Molnar <mingo@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: sched/urgent] sched/x86: Export 'percpu arch_freq_scale'

The following commit has been merged into the sched/urgent branch of tip:

Commit-ID:     d40605a6823577a6c40fad6fb1f10a40ea0389d7
Gitweb:        https://git.kernel.org/tip/d40605a6823577a6c40fad6fb1f10a40ea0389d7
Author:        Phil Auld <pauld@...hat.com>
AuthorDate:    Thu, 30 May 2024 14:15:48 -04:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 31 May 2024 11:48:42 +02:00

sched/x86: Export 'percpu arch_freq_scale'

Commit:

  7bc263840bc3 ("sched/topology: Consolidate and clean up access to a CPU's max compute capacity")

removed rq->cpu_capacity_orig in favor of using arch_scale_freq_capacity()
calls. Export the underlying percpu symbol on x86 so that external trace
point helper modules can be made to work again.

Signed-off-by: Phil Auld <pauld@...hat.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: https://lore.kernel.org/r/20240530181548.2039216-1-pauld@redhat.com
---
 arch/x86/kernel/cpu/aperfmperf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/cpu/aperfmperf.c b/arch/x86/kernel/cpu/aperfmperf.c
index f9a8c7b..b3fa61d 100644
--- a/arch/x86/kernel/cpu/aperfmperf.c
+++ b/arch/x86/kernel/cpu/aperfmperf.c
@@ -345,6 +345,7 @@ static DECLARE_WORK(disable_freq_invariance_work,
 		    disable_freq_invariance_workfn);
 
 DEFINE_PER_CPU(unsigned long, arch_freq_scale) = SCHED_CAPACITY_SCALE;
+EXPORT_PER_CPU_SYMBOL_GPL(arch_freq_scale);
 
 static void scale_freq_tick(u64 acnt, u64 mcnt)
 {