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linux-next/fs/nfs/nfstrace.h

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
NFS: Add event tracing for generic NFS events Add tracepoints for inode attribute updates, attribute revalidation, writeback start/end fsync start/end, attribute change start/end, permission check start/end. The intention is to enable performance tracing using 'perf'as well as improving debugging. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-20 06:59:33 +08:00
/*
* Copyright (c) 2013 Trond Myklebust <Trond.Myklebust@netapp.com>
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM nfs
#if !defined(_TRACE_NFS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_NFS_H
#include <linux/tracepoint.h>
#define nfs_show_file_type(ftype) \
__print_symbolic(ftype, \
{ DT_UNKNOWN, "UNKNOWN" }, \
{ DT_FIFO, "FIFO" }, \
{ DT_CHR, "CHR" }, \
{ DT_DIR, "DIR" }, \
{ DT_BLK, "BLK" }, \
{ DT_REG, "REG" }, \
{ DT_LNK, "LNK" }, \
{ DT_SOCK, "SOCK" }, \
{ DT_WHT, "WHT" })
#define nfs_show_cache_validity(v) \
__print_flags(v, "|", \
{ NFS_INO_INVALID_ATTR, "INVALID_ATTR" }, \
{ NFS_INO_INVALID_DATA, "INVALID_DATA" }, \
{ NFS_INO_INVALID_ATIME, "INVALID_ATIME" }, \
{ NFS_INO_INVALID_ACCESS, "INVALID_ACCESS" }, \
{ NFS_INO_INVALID_ACL, "INVALID_ACL" }, \
{ NFS_INO_REVAL_PAGECACHE, "REVAL_PAGECACHE" }, \
{ NFS_INO_REVAL_FORCED, "REVAL_FORCED" }, \
{ NFS_INO_INVALID_LABEL, "INVALID_LABEL" })
#define nfs_show_nfsi_flags(v) \
__print_flags(v, "|", \
{ 1 << NFS_INO_ADVISE_RDPLUS, "ADVISE_RDPLUS" }, \
{ 1 << NFS_INO_STALE, "STALE" }, \
NFS: fix the handling of NFS_INO_INVALID_DATA flag in nfs_revalidate_mapping There is a possible race in how the nfs_invalidate_mapping function is handled. Currently, we go and invalidate the pages in the file and then clear NFS_INO_INVALID_DATA. The problem is that it's possible for a stale page to creep into the mapping after the page was invalidated (i.e., via readahead). If another writer comes along and sets the flag after that happens but before invalidate_inode_pages2 returns then we could clear the flag without the cache having been properly invalidated. So, we must clear the flag first and then invalidate the pages. Doing this however, opens another race: It's possible to have two concurrent read() calls that end up in nfs_revalidate_mapping at the same time. The first one clears the NFS_INO_INVALID_DATA flag and then goes to call nfs_invalidate_mapping. Just before calling that though, the other task races in, checks the flag and finds it cleared. At that point, it trusts that the mapping is good and gets the lock on the page, allowing the read() to be satisfied from the cache even though the data is no longer valid. These effects are easily manifested by running diotest3 from the LTP test suite on NFS. That program does a series of DIO writes and buffered reads. The operations are serialized and page-aligned but the existing code fails the test since it occasionally allows a read to come out of the cache incorrectly. While mixing direct and buffered I/O isn't recommended, I believe it's possible to hit this in other ways that just use buffered I/O, though that situation is much harder to reproduce. The problem is that the checking/clearing of that flag and the invalidation of the mapping really need to be atomic. Fix this by serializing concurrent invalidations with a bitlock. At the same time, we also need to allow other places that check NFS_INO_INVALID_DATA to check whether we might be in the middle of invalidating the file, so fix up a couple of places that do that to look for the new NFS_INO_INVALIDATING flag. Doing this requires us to be careful not to set the bitlock unnecessarily, so this code only does that if it believes it will be doing an invalidation. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-01-28 02:46:15 +08:00
{ 1 << NFS_INO_INVALIDATING, "INVALIDATING" }, \
NFS: Add event tracing for generic NFS events Add tracepoints for inode attribute updates, attribute revalidation, writeback start/end fsync start/end, attribute change start/end, permission check start/end. The intention is to enable performance tracing using 'perf'as well as improving debugging. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-20 06:59:33 +08:00
{ 1 << NFS_INO_FSCACHE, "FSCACHE" }, \
{ 1 << NFS_INO_LAYOUTCOMMIT, "NEED_LAYOUTCOMMIT" }, \
{ 1 << NFS_INO_LAYOUTCOMMITTING, "LAYOUTCOMMIT" })
DECLARE_EVENT_CLASS(nfs_inode_event,
TP_PROTO(
const struct inode *inode
),
TP_ARGS(inode),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(u64, version)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->version = inode->i_version;
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu ",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
(unsigned long long)__entry->version
)
);
DECLARE_EVENT_CLASS(nfs_inode_event_done,
TP_PROTO(
const struct inode *inode,
int error
),
TP_ARGS(inode, error),
TP_STRUCT__entry(
__field(int, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(unsigned char, type)
__field(u64, fileid)
__field(u64, version)
__field(loff_t, size)
__field(unsigned long, nfsi_flags)
__field(unsigned long, cache_validity)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->error = error;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
__entry->type = nfs_umode_to_dtype(inode->i_mode);
__entry->version = inode->i_version;
__entry->size = i_size_read(inode);
__entry->nfsi_flags = nfsi->flags;
__entry->cache_validity = nfsi->cache_validity;
),
TP_printk(
"error=%d fileid=%02x:%02x:%llu fhandle=0x%08x "
"type=%u (%s) version=%llu size=%lld "
"cache_validity=%lu (%s) nfs_flags=%ld (%s)",
__entry->error,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->type,
nfs_show_file_type(__entry->type),
(unsigned long long)__entry->version,
(long long)__entry->size,
__entry->cache_validity,
nfs_show_cache_validity(__entry->cache_validity),
__entry->nfsi_flags,
nfs_show_nfsi_flags(__entry->nfsi_flags)
)
);
#define DEFINE_NFS_INODE_EVENT(name) \
DEFINE_EVENT(nfs_inode_event, name, \
TP_PROTO( \
const struct inode *inode \
), \
TP_ARGS(inode))
#define DEFINE_NFS_INODE_EVENT_DONE(name) \
DEFINE_EVENT(nfs_inode_event_done, name, \
TP_PROTO( \
const struct inode *inode, \
int error \
), \
TP_ARGS(inode, error))
DEFINE_NFS_INODE_EVENT(nfs_refresh_inode_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_refresh_inode_exit);
DEFINE_NFS_INODE_EVENT(nfs_revalidate_inode_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_revalidate_inode_exit);
DEFINE_NFS_INODE_EVENT(nfs_invalidate_mapping_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_invalidate_mapping_exit);
DEFINE_NFS_INODE_EVENT(nfs_getattr_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_getattr_exit);
DEFINE_NFS_INODE_EVENT(nfs_setattr_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_setattr_exit);
DEFINE_NFS_INODE_EVENT(nfs_writeback_page_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_writeback_page_exit);
DEFINE_NFS_INODE_EVENT(nfs_writeback_inode_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_writeback_inode_exit);
DEFINE_NFS_INODE_EVENT(nfs_fsync_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit);
DEFINE_NFS_INODE_EVENT(nfs_access_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_access_exit);
NFS: Add event tracing for generic NFS lookups Add tracepoints for lookup, lookup_revalidate and atomic_open Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-20 23:26:17 +08:00
#define show_lookup_flags(flags) \
__print_flags((unsigned long)flags, "|", \
{ LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \
{ LOOKUP_DIRECTORY, "DIRECTORY" }, \
{ LOOKUP_OPEN, "OPEN" }, \
{ LOOKUP_CREATE, "CREATE" }, \
{ LOOKUP_EXCL, "EXCL" })
DECLARE_EVENT_CLASS(nfs_lookup_event,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags
),
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_LOOKUP_EVENT(name) \
DEFINE_EVENT(nfs_lookup_event, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry, \
unsigned int flags \
), \
TP_ARGS(dir, dentry, flags))
DECLARE_EVENT_CLASS(nfs_lookup_event_done,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags,
int error
),
TP_ARGS(dir, dentry, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->error,
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_LOOKUP_EVENT_DONE(name) \
DEFINE_EVENT(nfs_lookup_event_done, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry, \
unsigned int flags, \
int error \
), \
TP_ARGS(dir, dentry, flags, error))
DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_enter);
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_exit);
DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_revalidate_enter);
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_revalidate_exit);
#define show_open_flags(flags) \
__print_flags((unsigned long)flags, "|", \
{ O_CREAT, "O_CREAT" }, \
{ O_EXCL, "O_EXCL" }, \
{ O_TRUNC, "O_TRUNC" }, \
{ O_APPEND, "O_APPEND" }, \
{ O_DSYNC, "O_DSYNC" }, \
{ O_DIRECT, "O_DIRECT" }, \
{ O_DIRECTORY, "O_DIRECTORY" })
#define show_fmode_flags(mode) \
__print_flags(mode, "|", \
{ ((__force unsigned long)FMODE_READ), "READ" }, \
{ ((__force unsigned long)FMODE_WRITE), "WRITE" }, \
{ ((__force unsigned long)FMODE_EXEC), "EXEC" })
TRACE_EVENT(nfs_atomic_open_enter,
TP_PROTO(
const struct inode *dir,
const struct nfs_open_context *ctx,
unsigned int flags
),
TP_ARGS(dir, ctx, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
__string(name, ctx->dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__entry->fmode = (__force unsigned int)ctx->mode;
__assign_str(name, ctx->dentry->d_name.name);
),
TP_printk(
"flags=%u (%s) fmode=%s name=%02x:%02x:%llu/%s",
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
TRACE_EVENT(nfs_atomic_open_exit,
TP_PROTO(
const struct inode *dir,
const struct nfs_open_context *ctx,
unsigned int flags,
int error
),
TP_ARGS(dir, ctx, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
__string(name, ctx->dentry->d_name.name)
),
TP_fast_assign(
__entry->error = error;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__entry->fmode = (__force unsigned int)ctx->mode;
__assign_str(name, ctx->dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) fmode=%s "
"name=%02x:%02x:%llu/%s",
__entry->error,
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
NFS: Add tracepoints for debugging generic file create events Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-21 22:53:09 +08:00
TRACE_EVENT(nfs_create_enter,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags
),
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->flags,
show_open_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
TRACE_EVENT(nfs_create_exit,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
unsigned int flags,
int error
),
TP_ARGS(dir, dentry, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->error = error;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->error,
__entry->flags,
show_open_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
NFS: Add tracepoints for debugging directory changes Add tracepoints for mknod, mkdir, rmdir, remove (unlink) and symlink. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 00:36:04 +08:00
DECLARE_EVENT_CLASS(nfs_directory_event,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry
),
TP_ARGS(dir, dentry),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"name=%02x:%02x:%llu/%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_DIRECTORY_EVENT(name) \
DEFINE_EVENT(nfs_directory_event, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry \
), \
TP_ARGS(dir, dentry))
DECLARE_EVENT_CLASS(nfs_directory_event_done,
TP_PROTO(
const struct inode *dir,
const struct dentry *dentry,
int error
),
TP_ARGS(dir, dentry, error),
TP_STRUCT__entry(
__field(int, error)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d name=%02x:%02x:%llu/%s",
__entry->error,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
#define DEFINE_NFS_DIRECTORY_EVENT_DONE(name) \
DEFINE_EVENT(nfs_directory_event_done, name, \
TP_PROTO( \
const struct inode *dir, \
const struct dentry *dentry, \
int error \
), \
TP_ARGS(dir, dentry, error))
DEFINE_NFS_DIRECTORY_EVENT(nfs_mknod_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_mknod_exit);
DEFINE_NFS_DIRECTORY_EVENT(nfs_mkdir_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_mkdir_exit);
DEFINE_NFS_DIRECTORY_EVENT(nfs_rmdir_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_rmdir_exit);
DEFINE_NFS_DIRECTORY_EVENT(nfs_remove_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_remove_exit);
DEFINE_NFS_DIRECTORY_EVENT(nfs_unlink_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_unlink_exit);
DEFINE_NFS_DIRECTORY_EVENT(nfs_symlink_enter);
DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_symlink_exit);
NFS: Add tracepoints for debugging NFS hard links Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 01:54:44 +08:00
TRACE_EVENT(nfs_link_enter,
TP_PROTO(
const struct inode *inode,
const struct inode *dir,
const struct dentry *dentry
),
TP_ARGS(inode, dir, dentry),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, fileid)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->dir = NFS_FILEID(dir);
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->fileid,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
TRACE_EVENT(nfs_link_exit,
TP_PROTO(
const struct inode *inode,
const struct inode *dir,
const struct dentry *dentry,
int error
),
TP_ARGS(inode, dir, dentry, error),
TP_STRUCT__entry(
__field(int, error)
__field(dev_t, dev)
__field(u64, fileid)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s",
__entry->error,
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->fileid,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
NFS: Add tracepoints for debugging NFS rename and sillyrename issues Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 00:08:45 +08:00
DECLARE_EVENT_CLASS(nfs_rename_event,
TP_PROTO(
const struct inode *old_dir,
const struct dentry *old_dentry,
const struct inode *new_dir,
const struct dentry *new_dentry
),
TP_ARGS(old_dir, old_dentry, new_dir, new_dentry),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, old_dir)
__field(u64, new_dir)
__string(old_name, old_dentry->d_name.name)
__string(new_name, new_dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = old_dir->i_sb->s_dev;
__entry->old_dir = NFS_FILEID(old_dir);
__entry->new_dir = NFS_FILEID(new_dir);
__assign_str(old_name, old_dentry->d_name.name);
__assign_str(new_name, new_dentry->d_name.name);
),
TP_printk(
"old_name=%02x:%02x:%llu/%s new_name=%02x:%02x:%llu/%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->old_dir,
__get_str(old_name),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->new_dir,
__get_str(new_name)
)
);
#define DEFINE_NFS_RENAME_EVENT(name) \
DEFINE_EVENT(nfs_rename_event, name, \
TP_PROTO( \
const struct inode *old_dir, \
const struct dentry *old_dentry, \
const struct inode *new_dir, \
const struct dentry *new_dentry \
), \
TP_ARGS(old_dir, old_dentry, new_dir, new_dentry))
DECLARE_EVENT_CLASS(nfs_rename_event_done,
TP_PROTO(
const struct inode *old_dir,
const struct dentry *old_dentry,
const struct inode *new_dir,
const struct dentry *new_dentry,
int error
),
TP_ARGS(old_dir, old_dentry, new_dir, new_dentry, error),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(u64, old_dir)
__string(old_name, old_dentry->d_name.name)
__field(u64, new_dir)
__string(new_name, new_dentry->d_name.name)
),
TP_fast_assign(
__entry->dev = old_dir->i_sb->s_dev;
__entry->old_dir = NFS_FILEID(old_dir);
__entry->new_dir = NFS_FILEID(new_dir);
__entry->error = error;
__assign_str(old_name, old_dentry->d_name.name);
__assign_str(new_name, new_dentry->d_name.name);
),
TP_printk(
"error=%d old_name=%02x:%02x:%llu/%s "
"new_name=%02x:%02x:%llu/%s",
__entry->error,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->old_dir,
__get_str(old_name),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->new_dir,
__get_str(new_name)
)
);
#define DEFINE_NFS_RENAME_EVENT_DONE(name) \
DEFINE_EVENT(nfs_rename_event_done, name, \
TP_PROTO( \
const struct inode *old_dir, \
const struct dentry *old_dentry, \
const struct inode *new_dir, \
const struct dentry *new_dentry, \
int error \
), \
TP_ARGS(old_dir, old_dentry, new_dir, \
new_dentry, error))
DEFINE_NFS_RENAME_EVENT(nfs_rename_enter);
DEFINE_NFS_RENAME_EVENT_DONE(nfs_rename_exit);
DEFINE_NFS_RENAME_EVENT_DONE(nfs_sillyrename_rename);
TRACE_EVENT(nfs_sillyrename_unlink,
TP_PROTO(
const struct nfs_unlinkdata *data,
int error
),
TP_ARGS(data, error),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(u64, dir)
__dynamic_array(char, name, data->args.name.len + 1)
),
TP_fast_assign(
nfs: per-name sillyunlink exclusion use d_alloc_parallel() for sillyunlink/lookup exclusion and explicit rwsem (nfs_rmdir() being a writer and nfs_call_unlink() - a reader) for rmdir/sillyunlink one. That ought to make lookup/readdir/!O_CREAT atomic_open really parallel on NFS. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-29 11:56:31 +08:00
struct inode *dir = d_inode(data->dentry->d_parent);
NFS: Add tracepoints for debugging NFS rename and sillyrename issues Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 00:08:45 +08:00
size_t len = data->args.name.len;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
tracing: Use __get_str() when manipulating strings Use __get_str(str) rather than __get_dynamic_array(str) when deadling with strings. It is just a code cleanup, no changes on tracepoint ABI. Link: http://lkml.kernel.org/r/ea260df91817411cca2a1f3db2abd88860094788.1467407618.git.bristot@redhat.com Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-nfs@vger.kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-07-02 07:44:36 +08:00
memcpy(__get_str(name),
NFS: Add tracepoints for debugging NFS rename and sillyrename issues Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 00:08:45 +08:00
data->args.name.name, len);
tracing: Use __get_str() when manipulating strings Use __get_str(str) rather than __get_dynamic_array(str) when deadling with strings. It is just a code cleanup, no changes on tracepoint ABI. Link: http://lkml.kernel.org/r/ea260df91817411cca2a1f3db2abd88860094788.1467407618.git.bristot@redhat.com Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-nfs@vger.kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-07-02 07:44:36 +08:00
__get_str(name)[len] = 0;
NFS: Add tracepoints for debugging NFS rename and sillyrename issues Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-22 00:08:45 +08:00
),
TP_printk(
"error=%d name=%02x:%02x:%llu/%s",
__entry->error,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
)
);
NFS: Add static NFS I/O tracepoints Tools like tcpdump and rpcdebug can be very useful. But there are plenty of environments where they are difficult or impossible to use. For example, we've had customers report I/O failures during workloads so heavy that collecting network traffic or enabling RPC debugging are themselves onerous. The kernel's static tracepoints are lightweight (less likely to introduce timing changes) and efficient (the trace data is compact). They also work in scenarios where capturing network traffic is not possible due to lack of hardware support (some InfiniBand HCAs) or where data or network privacy is a concern. Introduce tracepoints that show when an NFS READ, WRITE, or COMMIT is initiated, and when it completes. Record the arguments and results of each operation, which are not shown by existing sunrpc module's tracepoints. For instance, the recorded offset and count can be used to match an "initiate" event to a "done" event. If an NFS READ result returns fewer bytes than requested or zero, seeing the EOF flag can be probative. Seeing an NFS4ERR_BAD_STATEID result is also indication of a particular class of problems. The timing information attached to each event record can often be useful as well. Usage example: [root@manet tmp]# trace-cmd record -e nfs:*initiate* -e nfs:*done /sys/kernel/debug/tracing/events/nfs/*initiate*/filter /sys/kernel/debug/tracing/events/nfs/*done/filter Hit Ctrl^C to stop recording ^CKernel buffer statistics: Note: "entries" are the entries left in the kernel ring buffer and are not recorded in the trace data. They should all be zero. CPU: 0 entries: 0 overrun: 0 commit overrun: 0 bytes: 3680 oldest event ts: 78.367422 now ts: 100.124419 dropped events: 0 read events: 74 ... and so on. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-08-22 03:00:49 +08:00
TRACE_EVENT(nfs_initiate_read,
TP_PROTO(
const struct inode *inode,
loff_t offset, unsigned long count
),
TP_ARGS(inode, offset, count),
TP_STRUCT__entry(
__field(loff_t, offset)
__field(unsigned long, count)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->offset = offset;
__entry->count = count;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%lu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->count
)
);
TRACE_EVENT(nfs_readpage_done,
TP_PROTO(
const struct inode *inode,
int status, loff_t offset, bool eof
),
TP_ARGS(inode, status, offset, eof),
TP_STRUCT__entry(
__field(int, status)
__field(loff_t, offset)
__field(bool, eof)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->status = status;
__entry->offset = offset;
__entry->eof = eof;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld status=%d%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->status,
__entry->eof ? " eof" : ""
)
);
/*
* XXX: I tried using NFS_UNSTABLE and friends in this table, but they
* all evaluate to 0 for some reason, even if I include linux/nfs.h.
*/
#define nfs_show_stable(stable) \
__print_symbolic(stable, \
{ 0, " (UNSTABLE)" }, \
{ 1, " (DATA_SYNC)" }, \
{ 2, " (FILE_SYNC)" })
TRACE_EVENT(nfs_initiate_write,
TP_PROTO(
const struct inode *inode,
loff_t offset, unsigned long count,
enum nfs3_stable_how stable
),
TP_ARGS(inode, offset, count, stable),
TP_STRUCT__entry(
__field(loff_t, offset)
__field(unsigned long, count)
__field(enum nfs3_stable_how, stable)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->offset = offset;
__entry->count = count;
__entry->stable = stable;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%lu stable=%d%s",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->count,
__entry->stable, nfs_show_stable(__entry->stable)
)
);
TRACE_EVENT(nfs_writeback_done,
TP_PROTO(
const struct inode *inode,
int status,
loff_t offset,
struct nfs_writeverf *writeverf
),
TP_ARGS(inode, status, offset, writeverf),
TP_STRUCT__entry(
__field(int, status)
__field(loff_t, offset)
__field(enum nfs3_stable_how, stable)
__field(unsigned long long, verifier)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->status = status;
__entry->offset = offset;
__entry->stable = writeverf->committed;
memcpy(&__entry->verifier, &writeverf->verifier,
sizeof(__entry->verifier));
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld status=%d stable=%d%s "
"verifier 0x%016llx",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->status,
__entry->stable, nfs_show_stable(__entry->stable),
__entry->verifier
)
);
TRACE_EVENT(nfs_initiate_commit,
TP_PROTO(
const struct nfs_commit_data *data
),
TP_ARGS(data),
TP_STRUCT__entry(
__field(loff_t, offset)
__field(unsigned long, count)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct inode *inode = data->inode;
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->offset = data->args.offset;
__entry->count = data->args.count;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%lu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->count
)
);
TRACE_EVENT(nfs_commit_done,
TP_PROTO(
const struct nfs_commit_data *data
),
TP_ARGS(data),
TP_STRUCT__entry(
__field(int, status)
__field(loff_t, offset)
__field(unsigned long long, verifier)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct inode *inode = data->inode;
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->status = data->res.op_status;
__entry->offset = data->args.offset;
memcpy(&__entry->verifier, &data->verf.verifier,
sizeof(__entry->verifier));
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld status=%d verifier 0x%016llx",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->offset, __entry->status,
__entry->verifier
)
);
NFS: Add event tracing for generic NFS events Add tracepoints for inode attribute updates, attribute revalidation, writeback start/end fsync start/end, attribute change start/end, permission check start/end. The intention is to enable performance tracing using 'perf'as well as improving debugging. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-20 06:59:33 +08:00
#endif /* _TRACE_NFS_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE nfstrace
/* This part must be outside protection */
#include <trace/define_trace.h>
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