Unverified Commit 318580ad authored by Hongbo Li's avatar Hongbo Li Committed by Christian Brauner
Browse files

hugetlbfs: support tracepoint 



Add basic tracepoints for {alloc, evict, free}_inode, setattr and
fallocate. These can help users to debug hugetlbfs more conveniently.

Signed-off-by: default avatarHongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240829064110.67884-2-lihongbo22@huawei.com


Reviewed-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 6213dcc7

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -10367,6 +10367,7 @@ F: Documentation/mm/hugetlbfs_reserv.rst 
F:	Documentation/mm/vmemmap_dedup.rst

F:	fs/hugetlbfs/

F:	include/linux/hugetlb.h

F:	include/trace/events/hugetlbfs.h

F:	mm/hugetlb.c

F:	mm/hugetlb_vmemmap.c

F:	mm/hugetlb_vmemmap.h

include/trace/events/hugetlbfs.h

0 → 100644
+156 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#undef TRACE_SYSTEM

#define TRACE_SYSTEM hugetlbfs



#if !defined(_TRACE_HUGETLBFS_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_HUGETLBFS_H



#include <linux/tracepoint.h>



TRACE_EVENT(hugetlbfs_alloc_inode,



	TP_PROTO(struct inode *inode, struct inode *dir, int mode),



	TP_ARGS(inode, dir, mode),



	TP_STRUCT__entry(

		__field(dev_t,		dev)

		__field(ino_t,		ino)

		__field(ino_t,		dir)

		__field(__u16,		mode)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->dir		= dir->i_ino;

		__entry->mode		= mode;

	),



	TP_printk("dev %d,%d ino %lu dir %lu mode 0%o",

		MAJOR(__entry->dev), MINOR(__entry->dev),

		(unsigned long) __entry->ino,

		(unsigned long) __entry->dir, __entry->mode)

);



DECLARE_EVENT_CLASS(hugetlbfs__inode,



	TP_PROTO(struct inode *inode),



	TP_ARGS(inode),



	TP_STRUCT__entry(

		__field(dev_t,		dev)

		__field(ino_t,		ino)

		__field(__u16,		mode)

		__field(loff_t,		size)

		__field(unsigned int,	nlink)

		__field(unsigned int,	seals)

		__field(blkcnt_t,	blocks)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->mode		= inode->i_mode;

		__entry->size		= inode->i_size;

		__entry->nlink		= inode->i_nlink;

		__entry->seals		= HUGETLBFS_I(inode)->seals;

		__entry->blocks		= inode->i_blocks;

	),



	TP_printk("dev %d,%d ino %lu mode 0%o size %lld nlink %u seals %u blocks %llu",

		MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long) __entry->ino,

		__entry->mode, __entry->size, __entry->nlink, __entry->seals,

		(unsigned long long)__entry->blocks)

);



DEFINE_EVENT(hugetlbfs__inode, hugetlbfs_evict_inode,



	TP_PROTO(struct inode *inode),



	TP_ARGS(inode)

);



DEFINE_EVENT(hugetlbfs__inode, hugetlbfs_free_inode,



	TP_PROTO(struct inode *inode),



	TP_ARGS(inode)

);



TRACE_EVENT(hugetlbfs_setattr,



	TP_PROTO(struct inode *inode, struct dentry *dentry,

		struct iattr *attr),



	TP_ARGS(inode, dentry, attr),



	TP_STRUCT__entry(

		__field(dev_t,		dev)

		__field(ino_t,		ino)

		__field(unsigned int,	d_len)

		__string(d_name,	dentry->d_name.name)

		__field(unsigned int,	ia_valid)

		__field(unsigned int,	ia_mode)

		__field(loff_t,		old_size)

		__field(loff_t,		ia_size)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->d_len		= dentry->d_name.len;

		__assign_str(d_name);

		__entry->ia_valid	= attr->ia_valid;

		__entry->ia_mode	= attr->ia_mode;

		__entry->old_size	= inode->i_size;

		__entry->ia_size	= attr->ia_size;

	),



	TP_printk("dev %d,%d ino %lu name %.*s valid %#x mode 0%o old_size %lld size %lld",

		MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long)__entry->ino,

		__entry->d_len, __get_str(d_name), __entry->ia_valid, __entry->ia_mode,

		__entry->old_size, __entry->ia_size)

);



TRACE_EVENT(hugetlbfs_fallocate,



	TP_PROTO(struct inode *inode, int mode,

		loff_t offset, loff_t len, int ret),



	TP_ARGS(inode, mode, offset, len, ret),



	TP_STRUCT__entry(

		__field(dev_t,		dev)

		__field(ino_t,		ino)

		__field(int,		mode)

		__field(loff_t,		offset)

		__field(loff_t,		len)

		__field(loff_t,		size)

		__field(int,		ret)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->mode		= mode;

		__entry->offset		= offset;

		__entry->len		= len;

		__entry->size		= inode->i_size;

		__entry->ret		= ret;

	),



	TP_printk("dev %d,%d ino %lu mode 0%o offset %lld len %lld size %lld ret %d",

		MAJOR(__entry->dev), MINOR(__entry->dev),

		(unsigned long)__entry->ino, __entry->mode,

		(unsigned long long)__entry->offset,

		(unsigned long long)__entry->len,

		(unsigned long long)__entry->size,

		__entry->ret)

);



#endif /* _TRACE_HUGETLBFS_H */



 /* This part must be outside protection */

#include <trace/define_trace.h>