From: Pingfan Liu <kernelfans@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Baoquan He <bhe@redhat.com>, Pingfan Liu <piliu@redhat.com>,
kexec@lists.infradead.org,
Mahesh Salgaonkar <mahesh@linux.ibm.com>,
Ming Lei <ming.lei@redhat.com>,
Nicholas Piggin <npiggin@gmail.com>,
Sourabh Jain <sourabhjain@linux.ibm.com>,
Hari Bathini <hbathini@linux.ibm.com>,
Wen Xiong <wenxiong@us.ibm.com>
Subject: [PATCHv10 1/3] powerpc/kernel: Remove check on paca_ptrs_size
Date: Wed, 27 Dec 2023 10:39:32 +0800 [thread overview]
Message-ID: <20231227023934.12299-2-kernelfans@gmail.com> (raw)
In-Reply-To: <20231227023934.12299-1-kernelfans@gmail.com>
From: Pingfan Liu <piliu@redhat.com>
Between early_setup()->allocate_paca_ptrs() and
smp_setup_cpu_maps()->free_unused_pacas(), there is no call to
set_nr_cpu_ids(), which means nr_cpu_ids is unchanged.
Hence removing the check.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Cc: Wen Xiong <wenxiong@us.ibm.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Hari Bathini <hbathini@linux.ibm.com>
Cc: kexec@lists.infradead.org
To: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/kernel/paca.c | 13 -------------
1 file changed, 13 deletions(-)
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index cda4e00b67c1..760f371cf096 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -286,16 +286,6 @@ void __init allocate_paca(int cpu)
void __init free_unused_pacas(void)
{
- int new_ptrs_size;
-
- new_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids;
- if (new_ptrs_size < paca_ptrs_size)
- memblock_phys_free(__pa(paca_ptrs) + new_ptrs_size,
- paca_ptrs_size - new_ptrs_size);
-
- paca_nr_cpu_ids = nr_cpu_ids;
- paca_ptrs_size = new_ptrs_size;
-
#ifdef CONFIG_PPC_64S_HASH_MMU
if (early_radix_enabled()) {
/* Ugly fixup, see new_slb_shadow() */
@@ -304,9 +294,6 @@ void __init free_unused_pacas(void)
paca_ptrs[boot_cpuid]->slb_shadow_ptr = NULL;
}
#endif
-
- printk(KERN_DEBUG "Allocated %u bytes for %u pacas\n",
- paca_ptrs_size + paca_struct_size, nr_cpu_ids);
}
#ifdef CONFIG_PPC_64S_HASH_MMU
--
2.31.1
next prev parent reply other threads:[~2023-12-27 2:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-27 2:39 [PATCHv10 0/3] enable nr_cpus for powerpc without re-ordering cpu number Pingfan Liu
2023-12-27 2:39 ` Pingfan Liu [this message]
2023-12-27 2:41 ` [PATCHv10 2/3] powerpc/kernel: Extend arrays' size to make room for a hole in cpu_possible_mask Pingfan Liu
2023-12-27 19:52 ` kernel test robot
2023-12-27 2:41 ` [PATCHv10 3/3] powerpc/smp: Allow hole in paca_ptrs to accommodate boot_cpu Pingfan Liu
2023-12-27 20:45 ` kernel test robot
2023-12-28 4:07 ` kernel test robot
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