From: Liam Howlett <liam.howlett@oracle.com>
To: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v7 48/70] perf: Use VMA iterator
Date: Mon, 4 Apr 2022 14:35:51 +0000 [thread overview]
Message-ID: <20220404143501.2016403-49-Liam.Howlett@oracle.com> (raw)
In-Reply-To: <20220404143501.2016403-1-Liam.Howlett@oracle.com>
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
The VMA iterator is faster than the linked list and removing the linked
list will shrink the vm_area_struct.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
---
kernel/events/core.c | 3 ++-
kernel/events/uprobes.c | 9 ++++++---
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index cfde994ce61c..19c932747e17 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10316,8 +10316,9 @@ static void perf_addr_filter_apply(struct perf_addr_filter *filter,
struct perf_addr_filter_range *fr)
{
struct vm_area_struct *vma;
+ VMA_ITERATOR(vmi, mm, 0);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ for_each_vma(vmi, vma) {
if (!vma->vm_file)
continue;
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 6418083901d4..84b5a7cdfe81 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -349,9 +349,10 @@ static bool valid_ref_ctr_vma(struct uprobe *uprobe,
static struct vm_area_struct *
find_ref_ctr_vma(struct uprobe *uprobe, struct mm_struct *mm)
{
+ VMA_ITERATOR(vmi, mm, 0);
struct vm_area_struct *tmp;
- for (tmp = mm->mmap; tmp; tmp = tmp->vm_next)
+ for_each_vma(vmi, tmp)
if (valid_ref_ctr_vma(uprobe, tmp))
return tmp;
@@ -1230,11 +1231,12 @@ int uprobe_apply(struct inode *inode, loff_t offset,
static int unapply_uprobe(struct uprobe *uprobe, struct mm_struct *mm)
{
+ VMA_ITERATOR(vmi, mm, 0);
struct vm_area_struct *vma;
int err = 0;
mmap_read_lock(mm);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ for_each_vma(vmi, vma) {
unsigned long vaddr;
loff_t offset;
@@ -1982,9 +1984,10 @@ bool uprobe_deny_signal(void)
static void mmf_recalc_uprobes(struct mm_struct *mm)
{
+ VMA_ITERATOR(vmi, mm, 0);
struct vm_area_struct *vma;
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ for_each_vma(vmi, vma) {
if (!valid_vma(vma, false))
continue;
/*
--
2.34.1
next prev parent reply other threads:[~2022-04-04 14:40 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-04 14:35 [PATCH v7 00/70] Introducing the Maple Tree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 01/70] radix tree test suite: Add pr_err define Liam Howlett
2022-04-04 14:35 ` [PATCH v7 02/70] radix tree test suite: Add kmem_cache_set_non_kernel() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 03/70] radix tree test suite: Add allocation counts and size to kmem_cache Liam Howlett
2022-04-04 14:35 ` [PATCH v7 05/70] radix tree test suite: Add lockdep_is_held to header Liam Howlett
2022-04-04 14:35 ` [PATCH v7 04/70] radix tree test suite: Add support for slab bulk APIs Liam Howlett
2022-04-04 14:35 ` [PATCH v7 06/70] mips: Rename mt_init to mips_mt_init Liam Howlett
2022-04-04 14:35 ` [PATCH v7 07/70] Maple Tree: Add new data structure Liam Howlett
2022-04-20 13:47 ` Liam Howlett
2022-04-04 14:35 ` [PATCH v7 08/70] lib/test_maple_tree: Add testing for maple tree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 11/70] arch/arm64: Remove the merge workaround for VMA_ITERATOR Liam Howlett
2022-04-05 9:24 ` Will Deacon
2022-04-05 14:12 ` Liam Howlett
2022-04-04 14:35 ` [PATCH v7 09/70] mm: Start tracking VMAs with maple tree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 10/70] mm: Add VMA iterator Liam Howlett
2022-04-04 14:35 ` [PATCH v7 13/70] mm/mmap: Use the maple tree in find_vma() instead of the rbtree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 12/70] mmap: Use the VMA iterator in count_vma_pages_range() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 15/70] mm/mmap: Use maple tree for unmapped_area{_topdown} Liam Howlett
2022-04-04 14:35 ` [PATCH v7 14/70] mm/mmap: Use the maple tree for find_vma_prev() instead of the rbtree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 16/70] kernel/fork: Use maple tree for dup_mmap() during forking Liam Howlett
2022-04-04 14:35 ` [PATCH v7 17/70] damon: Convert __damon_va_three_regions to use the VMA iterator Liam Howlett
2022-04-04 14:35 ` [PATCH v7 18/70] proc: Remove VMA rbtree use from nommu Liam Howlett
2022-04-04 14:35 ` [PATCH v7 19/70] mm: Remove rb tree Liam Howlett
2022-04-04 14:35 ` [PATCH v7 20/70] mmap: Change zeroing of maple tree in __vma_adjust() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 22/70] mm: Optimize find_exact_vma() to use vma_lookup() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 21/70] xen: Use vma_lookup() in privcmd_ioctl_mmap() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 23/70] mm/khugepaged: Optimize collapse_pte_mapped_thp() by using vma_lookup() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 24/70] mm/mmap: Change do_brk_flags() to expand existing VMA and add do_brk_munmap() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 25/70] mm: Use maple tree operations for find_vma_intersection() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 26/70] mm/mmap: Use advanced maple tree API for mmap_region() Liam Howlett
2022-04-14 6:51 ` Andrew Morton
2022-04-19 17:57 ` Liam Howlett
2022-04-04 14:35 ` [PATCH v7 27/70] mm: Remove vmacache Liam Howlett
2022-04-04 14:35 ` [PATCH v7 29/70] mm/mmap: Move mmap_region() below do_munmap() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 28/70] mm: Convert vma_lookup() to use mtree_load() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 30/70] mm/mmap: Reorganize munmap to use maple states Liam Howlett
2022-04-04 14:35 ` [PATCH v7 32/70] arm64: Remove mmap linked list from vdso Liam Howlett
2022-04-04 14:35 ` [PATCH v7 31/70] mm/mmap: Change do_brk_munmap() to use do_mas_align_munmap() Liam Howlett
2022-04-04 14:35 ` [PATCH v7 33/70] parisc: Remove mmap linked list from cache handling Liam Howlett
2022-04-04 14:35 ` [PATCH v7 34/70] powerpc: Remove mmap linked list walks Liam Howlett
2022-04-04 14:35 ` [PATCH v7 36/70] x86: Remove vma " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 37/70] xtensa: " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 35/70] s390: " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 39/70] optee: Remove vma linked list walk Liam Howlett
2022-04-04 14:35 ` [PATCH v7 38/70] cxl: " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 40/70] um: " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 42/70] exec: Use VMA iterator instead of linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 41/70] coredump: Remove vma linked list walk Liam Howlett
2022-04-04 14:35 ` [PATCH v7 43/70] fs/proc/base: Use maple tree iterators in place of linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 45/70] userfaultfd: Use maple tree iterator to iterate VMAs Liam Howlett
2022-04-04 14:35 ` [PATCH v7 44/70] fs/proc/task_mmu: Stop using linked list and highest_vm_end Liam Howlett
2022-04-04 14:35 ` [PATCH v7 46/70] ipc/shm: Use VMA iterator instead of linked list Liam Howlett
2022-04-04 14:35 ` Liam Howlett [this message]
2022-04-04 14:35 ` [PATCH v7 47/70] acct: " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 51/70] bpf: Remove VMA " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 49/70] sched: Use maple tree iterator to walk VMAs Liam Howlett
2022-04-04 14:35 ` [PATCH v7 50/70] fork: Use VMA iterator Liam Howlett
2022-04-04 14:35 ` [PATCH v7 52/70] mm/gup: Use maple tree navigation instead of linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 53/70] mm/khugepaged: Stop using vma " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 54/70] mm/ksm: Use vma iterators instead of " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 55/70] mm/madvise: Use vma_find() " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 57/70] mm/mempolicy: Use vma iterator & maple state " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 56/70] mm/memcontrol: Stop using mm->highest_vm_end Liam Howlett
2022-04-04 14:35 ` [PATCH v7 58/70] mm/mlock: Use vma iterator and instead of vma linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 59/70] mm/mprotect: Use maple tree navigation " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 61/70] mm/msync: Use vma_find() " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 62/70] mm/oom_kill: Use maple tree iterators " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 60/70] mm/mremap: Use vma_find_intersection() " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 63/70] mm/pagewalk: Use vma_find() " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 65/70] i915: Use the VMA iterator Liam Howlett
2022-04-04 14:35 ` [PATCH v7 64/70] mm/swapfile: Use vma iterator instead of vma linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 66/70] nommu: Remove uses of VMA " Liam Howlett
2022-04-04 14:35 ` [PATCH v7 67/70] riscv: Use vma iterator for vdso Liam Howlett
2022-04-04 14:35 ` [PATCH v7 69/70] mm/mmap: Drop range_has_overlap() function Liam Howlett
2022-04-04 14:35 ` [PATCH v7 68/70] mm: Remove the vma linked list Liam Howlett
2022-04-04 14:35 ` [PATCH v7 70/70] mm/mmap.c: Pass in mapping to __vma_link_file() Liam Howlett
2022-04-14 6:50 ` [PATCH v7 00/70] Introducing the Maple Tree Andrew Morton
2022-04-14 7:39 ` Yu Zhao
2022-04-14 13:55 ` Matthew Wilcox
2022-04-14 13:57 ` Liam Howlett
2022-04-14 16:42 ` Liam Howlett
2022-04-14 16:57 ` Yu Zhao
2022-04-14 17:15 ` Liam Howlett
2022-04-14 19:19 ` Andrew Morton
2022-04-15 7:11 ` Yu Zhao
2022-04-16 1:03 ` Liam Howlett
2022-04-16 4:10 ` Yu Zhao
2022-04-16 15:19 ` Liam Howlett
2022-04-16 19:30 ` Yu Zhao
2022-04-19 15:51 ` Liam Howlett
2022-04-19 21:58 ` Yu Zhao
2022-04-19 23:18 ` Liam Howlett
2022-04-19 23:22 ` Yu Zhao
2022-04-20 13:43 ` Liam Howlett
2022-04-25 18:05 ` Yu Zhao
2022-04-25 19:58 ` Liam Howlett
2022-04-25 20:01 ` Yu Zhao
2022-04-19 19:22 ` Liam Howlett
2022-04-19 17:50 ` Liam Howlett
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