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ANDROID: vendor hooks: add vendor hooks for do_new_mount

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Add a vendor hook for do_new_mount_fc is aimed at categorizing the
properties according to the path. And making these properties more
easily accessible.This will help us to customize readahead operations, improving the speed of App startup and game loading.

Bug: 345590666

Change-Id: I913bbb9bd4c3efd5f4c7d101056d301855881cc2
Signed-off-by: Wang Jianzheng <11134417@vivo.corp-partner.google.com>
This commit is contained in:
Wang Jianzheng 2024-06-07 11:18:44 +08:00 committed by Todd Kjos
parent 5bfee09a96
commit cdb09f7ea3
3 changed files with 11 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@ -421,6 +421,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_tsk_need_resched_lazy);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_usb_dev_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_usb_dev_resume);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_bd_link_disk_holder);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_new_mount_fc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_use_amu_fie);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_resume_begin);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_resume_end);

3
fs/namespace.c
View File

@ -35,6 +35,7 @@
#include "pnode.h"
#include "internal.h"
#include <trace/hooks/blk.h>
/* Maximum number of mounts in a mount namespace */
static unsigned int sysctl_mount_max __read_mostly = 100000;
@ -3289,6 +3290,8 @@ static int do_new_mount_fc(struct fs_context *fc, struct path *mountpoint,
unlock_mount(mp);
if (error < 0)
mntput(mnt);
else
trace_android_vh_do_new_mount_fc(mountpoint, mnt);
return error;
}

7
include/trace/hooks/blk.h
View File

@ -17,6 +17,13 @@ DECLARE_HOOK(android_vh_bd_link_disk_holder,
TP_PROTO(struct block_device *bdev, struct gendisk *disk),
TP_ARGS(bdev, disk));
struct path;
struct vfsmount;
DECLARE_HOOK(android_vh_do_new_mount_fc,
TP_PROTO(struct path *mountpoint, struct vfsmount *mnt),
TP_ARGS(mountpoint, mnt));
#endif /* _TRACE_HOOK_BLK_H */
/* This part must be outside protection */
#include <trace/define_trace.h>