linux-kernel - [PATCH v2] arch/powerpc: Remove unused cede related functions

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Date: Tue, 14 May 2024 18:54:55 +0530
From: Gautam Menghani <gautam@...ux.ibm.com>
To: mpe@...erman.id.au, npiggin@...il.com, christophe.leroy@...roup.eu,
        naveen.n.rao@...ux.ibm.com
Cc: Gautam Menghani <gautam@...ux.ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, aboorvad@...ux.vnet.ibm.com
Subject: [PATCH v2] arch/powerpc: Remove unused cede related functions

Remove extended_cede_processor() and its helpers as
extended_cede_processor() has no callers since
commit 48f6e7f6d948("powerpc/pseries: remove cede offline state for CPUs")

Signed-off-by: Gautam Menghani <gautam@...ux.ibm.com>
---
v1 -> v2:
1. Remove helpers of extended_cede_processor()

 arch/powerpc/include/asm/plpar_wrappers.h | 28 -----------------------
 1 file changed, 28 deletions(-)

diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
index b3ee44a40c2f..71648c126970 100644
--- a/arch/powerpc/include/asm/plpar_wrappers.h
+++ b/arch/powerpc/include/asm/plpar_wrappers.h
@@ -18,16 +18,6 @@ static inline long poll_pending(void)
 	return plpar_hcall_norets(H_POLL_PENDING);
 }
 
-static inline u8 get_cede_latency_hint(void)
-{
-	return get_lppaca()->cede_latency_hint;
-}
-
-static inline void set_cede_latency_hint(u8 latency_hint)
-{
-	get_lppaca()->cede_latency_hint = latency_hint;
-}
-
 static inline long cede_processor(void)
 {
 	/*
@@ -37,24 +27,6 @@ static inline long cede_processor(void)
 	return plpar_hcall_norets_notrace(H_CEDE);
 }
 
-static inline long extended_cede_processor(unsigned long latency_hint)
-{
-	long rc;
-	u8 old_latency_hint = get_cede_latency_hint();
-
-	set_cede_latency_hint(latency_hint);
-
-	rc = cede_processor();
-
-	/* Ensure that H_CEDE returns with IRQs on */
-	if (WARN_ON(IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG) && !(mfmsr() & MSR_EE)))
-		__hard_irq_enable();
-
-	set_cede_latency_hint(old_latency_hint);
-
-	return rc;
-}
-
 static inline long vpa_call(unsigned long flags, unsigned long cpu,
 		unsigned long vpa)
 {
-- 
2.45.0