/*
 * Events for filesystem locks
 *
 * Copyright 2013 Jeff Layton <jlayton@poochiereds.net>
 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM filelock

#if !defined(_TRACE_FILELOCK_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_FILELOCK_H

#include <linux/tracepoint.h>
#include <linux/fs.h>
#include <linux/device.h>
#include <linux/kdev_t.h>

#define show_fl_flags(val)						\
	__print_flags(val, "|", 					\
		{ FL_POSIX,		"FL_POSIX" },			\
		{ FL_FLOCK,		"FL_FLOCK" },			\
		{ FL_DELEG,		"FL_DELEG" },			\
		{ FL_ACCESS,		"FL_ACCESS" },			\
		{ FL_EXISTS,		"FL_EXISTS" },			\
		{ FL_LEASE,		"FL_LEASE" },			\
		{ FL_CLOSE,		"FL_CLOSE" },			\
		{ FL_SLEEP,		"FL_SLEEP" },			\
		{ FL_DOWNGRADE_PENDING,	"FL_DOWNGRADE_PENDING" },	\
		{ FL_UNLOCK_PENDING,	"FL_UNLOCK_PENDING" },		\
		{ FL_OFDLCK,		"FL_OFDLCK" })

#define show_fl_type(val)				\
	__print_symbolic(val,				\
			{ F_RDLCK, "F_RDLCK" },		\
			{ F_WRLCK, "F_WRLCK" },		\
			{ F_UNLCK, "F_UNLCK" })

TRACE_EVENT(locks_get_lock_context,
	TP_PROTO(struct inode *inode, int type, struct file_lock_context *ctx),

	TP_ARGS(inode, type, ctx),

	TP_STRUCT__entry(
		__field(unsigned long, i_ino)
		__field(dev_t, s_dev)
		__field(unsigned char, type)
		__field(struct file_lock_context *, ctx)
	),

	TP_fast_assign(
		__entry->s_dev = inode->i_sb->s_dev;
		__entry->i_ino = inode->i_ino;
		__entry->type = type;
		__entry->ctx = ctx;
	),

	TP_printk("dev=0x%x:0x%x ino=0x%lx type=%s ctx=%p",
		  MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		  __entry->i_ino, show_fl_type(__entry->type), __entry->ctx)
);

DECLARE_EVENT_CLASS(filelock_lock,
	TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),

	TP_ARGS(inode, fl, ret),

	TP_STRUCT__entry(
		__field(struct file_lock *, fl)
		__field(unsigned long, i_ino)
		__field(dev_t, s_dev)
		__field(struct file_lock *, fl_next)
		__field(fl_owner_t, fl_owner)
		__field(unsigned int, fl_pid)
		__field(unsigned int, fl_flags)
		__field(unsigned char, fl_type)
		__field(loff_t, fl_start)
		__field(loff_t, fl_end)
		__field(int, ret)
	),

	TP_fast_assign(
		__entry->fl = fl ? fl : NULL;
		__entry->s_dev = inode->i_sb->s_dev;
		__entry->i_ino = inode->i_ino;
		__entry->fl_next = fl ? fl->fl_next : NULL;
		__entry->fl_owner = fl ? fl->fl_owner : NULL;
		__entry->fl_pid = fl ? fl->fl_pid : 0;
		__entry->fl_flags = fl ? fl->fl_flags : 0;
		__entry->fl_type = fl ? fl->fl_type : 0;
		__entry->fl_start = fl ? fl->fl_start : 0;
		__entry->fl_end = fl ? fl->fl_end : 0;
		__entry->ret = ret;
	),

	TP_printk("fl=0x%p dev=0x%x:0x%x ino=0x%lx fl_next=0x%p fl_owner=0x%p fl_pid=%u fl_flags=%s fl_type=%s fl_start=%lld fl_end=%lld ret=%d",
		__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		__entry->i_ino, __entry->fl_next, __entry->fl_owner,
		__entry->fl_pid, show_fl_flags(__entry->fl_flags),
		show_fl_type(__entry->fl_type),
		__entry->fl_start, __entry->fl_end, __entry->ret)
);

DEFINE_EVENT(filelock_lock, posix_lock_inode,
		TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
		TP_ARGS(inode, fl, ret));

DEFINE_EVENT(filelock_lock, fcntl_setlk,
		TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
		TP_ARGS(inode, fl, ret));

DEFINE_EVENT(filelock_lock, locks_remove_posix,
		TP_PROTO(struct inode *inode, struct file_lock *fl, int ret),
		TP_ARGS(inode, fl, ret));

DECLARE_EVENT_CLASS(filelock_lease,

	TP_PROTO(struct inode *inode, struct file_lock *fl),

	TP_ARGS(inode, fl),

	TP_STRUCT__entry(
		__field(struct file_lock *, fl)
		__field(unsigned long, i_ino)
		__field(dev_t, s_dev)
		__field(struct file_lock *, fl_next)
		__field(fl_owner_t, fl_owner)
		__field(unsigned int, fl_flags)
		__field(unsigned char, fl_type)
		__field(unsigned long, fl_break_time)
		__field(unsigned long, fl_downgrade_time)
	),

	TP_fast_assign(
		__entry->fl = fl ? fl : NULL;
		__entry->s_dev = inode->i_sb->s_dev;
		__entry->i_ino = inode->i_ino;
		__entry->fl_next = fl ? fl->fl_next : NULL;
		__entry->fl_owner = fl ? fl->fl_owner : NULL;
		__entry->fl_flags = fl ? fl->fl_flags : 0;
		__entry->fl_type = fl ? fl->fl_type : 0;
		__entry->fl_break_time = fl ? fl->fl_break_time : 0;
		__entry->fl_downgrade_time = fl ? fl->fl_downgrade_time : 0;
	),

	TP_printk("fl=0x%p dev=0x%x:0x%x ino=0x%lx fl_next=0x%p fl_owner=0x%p fl_flags=%s fl_type=%s fl_break_time=%lu fl_downgrade_time=%lu",
		__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		__entry->i_ino, __entry->fl_next, __entry->fl_owner,
		show_fl_flags(__entry->fl_flags),
		show_fl_type(__entry->fl_type),
		__entry->fl_break_time, __entry->fl_downgrade_time)
);

DEFINE_EVENT(filelock_lease, break_lease_noblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
		TP_ARGS(inode, fl));

DEFINE_EVENT(filelock_lease, break_lease_block, TP_PROTO(struct inode *inode, struct file_lock *fl),
		TP_ARGS(inode, fl));

DEFINE_EVENT(filelock_lease, break_lease_unblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
		TP_ARGS(inode, fl));

DEFINE_EVENT(filelock_lease, generic_delete_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
		TP_ARGS(inode, fl));

DEFINE_EVENT(filelock_lease, time_out_leases, TP_PROTO(struct inode *inode, struct file_lock *fl),
		TP_ARGS(inode, fl));

TRACE_EVENT(generic_add_lease,
	TP_PROTO(struct inode *inode, struct file_lock *fl),

	TP_ARGS(inode, fl),

	TP_STRUCT__entry(
		__field(unsigned long, i_ino)
		__field(int, wcount)
		__field(int, dcount)
		__field(int, icount)
		__field(dev_t, s_dev)
		__field(fl_owner_t, fl_owner)
		__field(unsigned int, fl_flags)
		__field(unsigned char, fl_type)
	),

	TP_fast_assign(
		__entry->s_dev = inode->i_sb->s_dev;
		__entry->i_ino = inode->i_ino;
		__entry->wcount = atomic_read(&inode->i_writecount);
		__entry->dcount = d_count(fl->fl_file->f_path.dentry);
		__entry->icount = atomic_read(&inode->i_count);
		__entry->fl_owner = fl ? fl->fl_owner : NULL;
		__entry->fl_flags = fl ? fl->fl_flags : 0;
		__entry->fl_type = fl ? fl->fl_type : 0;
	),

	TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d dcount=%d icount=%d fl_owner=0x%p fl_flags=%s fl_type=%s",
		MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		__entry->i_ino, __entry->wcount, __entry->dcount,
		__entry->icount, __entry->fl_owner,
		show_fl_flags(__entry->fl_flags),
		show_fl_type(__entry->fl_type))
);

#endif /* _TRACE_FILELOCK_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
intless in this code because the timer is
strictlty per CPU, initialized as pinned and all operations which arm the
timer happen on the CPU to which the timer belongs.

Simplify the whole machinery by using mod_timer() instead of add_timer_on()
which avoids the problem because mod_timer() can handle already queued
timers. Use __start_timer() everywhere so the earliest armed expiry time is
preserved.

Reported-by: Erik Veijola &lt;erik.veijola@intel.com&gt;
Tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>Diffstat</a> (limited to 'tools/perf/util/alias.c')</div><table summary='diffstat' class='diffstat'>