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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /include/trace/events/fsnotify.h | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'include/trace/events/fsnotify.h')
| -rw-r--r-- | include/trace/events/fsnotify.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/trace/events/fsnotify.h b/include/trace/events/fsnotify.h new file mode 100644 index 000000000..341bbd57a --- /dev/null +++ b/include/trace/events/fsnotify.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM fsnotify + +#if !defined(_TRACE_FSNOTIFY_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_FSNOTIFY_H + +#include <linux/tracepoint.h> + +#include <trace/misc/fsnotify.h> + +TRACE_EVENT(fsnotify, + TP_PROTO(__u32 mask, const void *data, int data_type, + struct inode *dir, const struct qstr *file_name, + struct inode *inode, u32 cookie), + + TP_ARGS(mask, data, data_type, dir, file_name, inode, cookie), + + TP_STRUCT__entry( + __field(__u32, mask) + __field(unsigned long, dir_ino) + __field(unsigned long, ino) + __field(dev_t, s_dev) + __field(int, data_type) + __field(u32, cookie) + __string(file_name, file_name ? (const char *)file_name->name : "") + ), + + TP_fast_assign( + __entry->mask = mask; + __entry->dir_ino = dir ? dir->i_ino : 0; + __entry->ino = inode ? inode->i_ino : 0; + __entry->s_dev = dir ? dir->i_sb->s_dev : + inode ? inode->i_sb->s_dev : 0; + __entry->data_type = data_type; + __entry->cookie = cookie; + __assign_str(file_name); + ), + + TP_printk("dev=%d:%d dir=%lu ino=%lu data_type=%d cookie=0x%x mask=0x%x %s name=%s", + MAJOR(__entry->s_dev), MINOR(__entry->s_dev), + __entry->dir_ino, __entry->ino, + __entry->data_type, __entry->cookie, + __entry->mask, show_fsnotify_mask(__entry->mask), + __get_str(file_name)) +); + +#endif /* _TRACE_FSNOTIFY_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |