tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ANDROID: vendor_hooks: Add hook to precisely control readahead

Browse Source 
Add vendor hooks to precisely control readahead based on various
factors, such as filesystem type, file type, process priority, and
other considerations.

Bug: 387208968
Bug: 415915027
Change-Id: I3016c5e0da487ae03b760dce4f6dbc0d90f145b3
Signed-off-by: Yang Yang <yang.yang@vivo.com>
(cherry picked from commit d005368a82ecc5b4f7e04d9df7d007ef384bcd2f)
Signed-off-by: ying zuxin <11154159@vivo.com>
This commit is contained in:
Yang Yang
2024-12-30 18:48:28 +08:00
committed by Sandeep Dhavale
parent 2b9ccc455b
commit 575d29316a
3 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/android/vendor_hooks.c
View File

@@ -384,6 +384,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_fuse_request_send);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_fuse_request_end);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_lruvec_add_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_lruvec_del_folio);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_async_mmap_readahead);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tcp_sock_error);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tcp_fastsyn);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tcp_state_change);

5
include/trace/hooks/mm.h
View File

@@ -323,6 +323,11 @@ DECLARE_HOOK(android_vh_alloc_pages_slowpath_end,
DECLARE_HOOK(android_vh_add_lazyfree_bypass,
TP_PROTO(struct lruvec *lruvec, struct folio *folio, bool *bypass),
TP_ARGS(lruvec, folio, bypass));
DECLARE_HOOK(android_vh_do_async_mmap_readahead,
TP_PROTO(struct vm_fault *vmf, struct folio *folio, bool *skip),
TP_ARGS(vmf, folio, skip));
DECLARE_HOOK(android_vh_alloc_contig_range_not_isolated,
TP_PROTO(unsigned long start, unsigned end),
TP_ARGS(start, end));

5
mm/filemap.c
View File

@@ -3271,6 +3271,11 @@ static struct file *do_async_mmap_readahead(struct vm_fault *vmf,
DEFINE_READAHEAD(ractl, file, ra, file->f_mapping, vmf->pgoff);
struct file *fpin = NULL;
unsigned int mmap_miss;
bool skip = false;
trace_android_vh_do_async_mmap_readahead(vmf, folio, &skip);
if (skip)
return fpin;
/* If we don't want any read-ahead, don't bother */
if (vmf->vma->vm_flags & VM_RAND_READ || !ra->ra_pages)