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ANDROID: vendor_hooks: add vendor hooks for bd_link_disk_holder

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Add a vendor hook for bd_link_disk_holder. It is proposed to modify the
oem_data in the struct gendisk to store a pointer. It will help us to
use our customized scheduler hook.

Bug: 345603555

Change-Id: Ibf877dcda76da6a2a1924fcc98e6ec1b51997627
Signed-off-by: Wang Jianzheng <11134417@vivo.corp-partner.google.com>
This commit is contained in:
Wang Jianzheng 2024-06-07 12:05:09 +08:00 committed by Treehugger Robot
parent 173fe3da85
commit dbe0e69e89
3 changed files with 26 additions and 0 deletions
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2
block/holder.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only // SPDX-License-Identifier: GPL-2.0-only
#include <linux/blkdev.h> #include <linux/blkdev.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <trace/hooks/blk.h>
struct bd_holder_disk { struct bd_holder_disk {
struct list_head list; struct list_head list;
@ -107,6 +108,7 @@ int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk)
if (ret) if (ret)
goto out_del_symlink; goto out_del_symlink;
list_add(&holder->list, &disk->slave_bdevs); list_add(&holder->list, &disk->slave_bdevs);
trace_android_vh_bd_link_disk_holder(bdev, disk);
mutex_unlock(&disk->open_mutex); mutex_unlock(&disk->open_mutex);
return 0; return 0;

2
drivers/android/vendor_hooks.c
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@ -71,6 +71,7 @@
#include <trace/hooks/user.h> #include <trace/hooks/user.h>
#include <trace/hooks/fuse.h> #include <trace/hooks/fuse.h>
#include <trace/hooks/psi.h> #include <trace/hooks/psi.h>
#include <trace/hooks/blk.h>
/* /*
* Export tracepoints that act as a bare tracehook (ie: have no trace event * Export tracepoints that act as a bare tracehook (ie: have no trace event
@ -413,3 +414,4 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_read_lazy_flag);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_tsk_need_resched_lazy); 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_rvh_usb_dev_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_usb_dev_resume); EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_usb_dev_resume);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_bd_link_disk_holder);

22
include/trace/hooks/blk.h Normal file
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@ -0,0 +1,22 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM blk
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH trace/hooks
#if !defined(_TRACE_HOOK_BLK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HOOK_BLK_H
#include <trace/hooks/vendor_hooks.h>
struct block_device;
struct gendisk;
DECLARE_HOOK(android_vh_bd_link_disk_holder,
TP_PROTO(struct block_device *bdev, struct gendisk *disk),
TP_ARGS(bdev, disk));
#endif /* _TRACE_HOOK_BLK_H */
/* This part must be outside protection */
#include <trace/define_trace.h>