linux-kernel - [PATCH v1 1/3] powerpc/32s: Remove unused counters incremented by create

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Date:   Tue, 24 Nov 2020 19:51:55 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 1/3] powerpc/32s: Remove unused counters incremented by
 create_hpte()

primary_pteg_full and htab_hash_searches are not used.

Remove them.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/mm/book3s32/hash_low.S | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S
index 9a56ba4f68f2..f964fd34dad9 100644
--- a/arch/powerpc/mm/book3s32/hash_low.S
+++ b/arch/powerpc/mm/book3s32/hash_low.S
@@ -359,11 +359,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT)
 	beq+	10f			/* no PTE: go look for an empty slot */
 	tlbie	r4
 
-	lis	r4, (htab_hash_searches - PAGE_OFFSET)@ha
-	lwz	r6, (htab_hash_searches - PAGE_OFFSET)@l(r4)
-	addi	r6,r6,1			/* count how many searches we do */
-	stw	r6, (htab_hash_searches - PAGE_OFFSET)@l(r4)
-
 	/* Search the primary PTEG for a PTE whose 1st (d)word matches r5 */
 	mtctr	r0
 	addi	r4,r3,-HPTE_SIZE
@@ -393,12 +388,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT)
 	bdnzf	2,1b			/* loop while ctr != 0 && !cr0.eq */
 	beq+	.Lfound_empty
 
-	/* update counter of times that the primary PTEG is full */
-	lis	r4, (primary_pteg_full - PAGE_OFFSET)@ha
-	lwz	r6, (primary_pteg_full - PAGE_OFFSET)@l(r4)
-	addi	r6,r6,1
-	stw	r6, (primary_pteg_full - PAGE_OFFSET)@l(r4)
-
 	patch_site	0f, patch__hash_page_C
 	/* Search the secondary PTEG for an empty slot */
 	ori	r5,r5,PTE_H		/* set H (secondary hash) bit */
@@ -491,10 +480,6 @@ _ASM_NOKPROBE_SYMBOL(create_hpte)
 	.align	2
 next_slot:
 	.space	4
-primary_pteg_full:
-	.space	4
-htab_hash_searches:
-	.space	4
 	.previous
 
 /*
-- 
2.25.0