From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/oprofile/buffer_sync.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/kernel/drivers/oprofile/buffer_sync.c b/kernel/drivers/oprofile/buffer_sync.c
index ac27f3d..cc91786 100644
--- a/kernel/drivers/oprofile/buffer_sync.c
+++ b/kernel/drivers/oprofile/buffer_sync.c
@@ -91,11 +91,11 @@
struct mm_struct *mm = current->mm;
struct vm_area_struct *mpnt;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
mpnt = find_vma(mm, addr);
if (mpnt && mpnt->vm_file && (mpnt->vm_flags & VM_EXEC)) {
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
/* To avoid latency problems, we only process the current CPU,
* hoping that most samples for the task are on this CPU
*/
@@ -103,7 +103,7 @@
return 0;
}
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
return 0;
}
@@ -116,7 +116,7 @@
{
#ifdef CONFIG_MODULES
if (val != MODULE_STATE_COMING)
- return 0;
+ return NOTIFY_DONE;
/* FIXME: should we process all CPU buffers ? */
mutex_lock(&buffer_mutex);
@@ -124,7 +124,7 @@
add_event_entry(MODULE_LOADED_CODE);
mutex_unlock(&buffer_mutex);
#endif
- return 0;
+ return NOTIFY_OK;
}
@@ -256,7 +256,7 @@
unsigned long cookie = NO_COOKIE;
struct vm_area_struct *vma;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
if (addr < vma->vm_start || addr >= vma->vm_end)
@@ -276,7 +276,7 @@
if (!vma)
cookie = INVALID_COOKIE;
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
return cookie;
}
@@ -486,7 +486,7 @@
/* Sync one of the CPU's buffers into the global event buffer.
* Here we need to go through each batch of samples punctuated
- * by context switch notes, taking the task's mmap_sem and doing
+ * by context switch notes, taking the task's mmap_lock and doing
* lookup in task->mm->mmap to convert EIP into dcookie/offset
* value.
*/
--
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