/*
 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef	__XFS_LOG_H__
#define __XFS_LOG_H__

struct xfs_log_vec {
	struct xfs_log_vec	*lv_next;	/* next lv in build list */
	int			lv_niovecs;	/* number of iovecs in lv */
	struct xfs_log_iovec	*lv_iovecp;	/* iovec array */
	struct xfs_log_item	*lv_item;	/* owner */
	char			*lv_buf;	/* formatted buffer */
	int			lv_bytes;	/* accounted space in buffer */
	int			lv_buf_len;	/* aligned size of buffer */
	int			lv_size;	/* size of allocated lv */
};

#define XFS_LOG_VEC_ORDERED	(-1)

static inline void *
xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
		uint type)
{
	struct xfs_log_iovec *vec = *vecp;

	if (vec) {
		ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs);
		vec++;
	} else {
		vec = &lv->lv_iovecp[0];
	}

	vec->i_type = type;
	vec->i_addr = lv->lv_buf + lv->lv_buf_len;

	ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t)));

	*vecp = vec;
	return vec->i_addr;
}

/*
 * We need to make sure the next buffer is naturally aligned for the biggest
 * basic data type we put into it.  We already accounted for this padding when
 * sizing the buffer.
 *
 * However, this padding does not get written into the log, and hence we have to
 * track the space used by the log vectors separately to prevent log space hangs
 * due to inaccurate accounting (i.e. a leak) of the used log space through the
 * CIL context ticket.
 */
static inline void
xlog_finish_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec *vec, int len)
{
	lv->lv_buf_len += round_up(len, sizeof(uint64_t));
	lv->lv_bytes += len;
	vec->i_len = len;
}

static inline void *
xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
		uint type, void *data, int len)
{
	void *buf;

	buf = xlog_prepare_iovec(lv, vecp, type);
	memcpy(buf, data, len);
	xlog_finish_iovec(lv, *vecp, len);
	return buf;
}

/*
 * Structure used to pass callback function and the function's argument
 * to the log manager.
 */
typedef struct xfs_log_callback {
	struct xfs_log_callback	*cb_next;
	void			(*cb_func)(void *, int);
	void			*cb_arg;
} xfs_log_callback_t;

/*
 * By comparing each component, we don't have to worry about extra
 * endian issues in treating two 32 bit numbers as one 64 bit number
 */
static inline xfs_lsn_t	_lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
{
	if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
		return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;

	if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
		return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;

	return 0;
}

#define	XFS_LSN_CMP(x,y) _lsn_cmp(x,y)

/*
 * Flags to xfs_log_force()
 *
 *	XFS_LOG_SYNC:	Synchronous force in-core log to disk
 */
#define XFS_LOG_SYNC		0x1

/* Log manager interfaces */
struct xfs_mount;
struct xlog_in_core;
struct xlog_ticket;
struct xfs_log_item;
struct xfs_item_ops;
struct xfs_trans;
struct xfs_log_callback;

xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
		       struct xlog_ticket *ticket,
		       struct xlog_in_core **iclog,
		       bool regrant);
int	  _xfs_log_force(struct xfs_mount *mp,
			 uint		flags,
			 int		*log_forced);
void	  xfs_log_force(struct xfs_mount	*mp,
			uint			flags);
int	  _xfs_log_force_lsn(struct xfs_mount *mp,
			     xfs_lsn_t		lsn,
			     uint		flags,
			     int		*log_forced);
void	  xfs_log_force_lsn(struct xfs_mount	*mp,
			    xfs_lsn_t		lsn,
			    uint		flags);
int	  xfs_log_mount(struct xfs_mount	*mp,
			struct xfs_buftarg	*log_target,
			xfs_daddr_t		start_block,
			int		 	num_bblocks);
int	  xfs_log_mount_finish(struct xfs_mount *mp);
int	xfs_log_mount_cancel(struct xfs_mount *);
xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
void	  xfs_log_space_wake(struct xfs_mount *mp);
int	  xfs_log_notify(struct xfs_mount	*mp,
			 struct xlog_in_core	*iclog,
			 struct xfs_log_callback *callback_entry);
int	  xfs_log_release_iclog(struct xfs_mount *mp,
			 struct xlog_in_core	 *iclog);
int	  xfs_log_reserve(struct xfs_mount *mp,
			  int		   length,
			  int		   count,
			  struct xlog_ticket **ticket,
			  __uint8_t	   clientid,
			  bool		   permanent);
int	  xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
void      xfs_log_unmount(struct xfs_mount *mp);
int	  xfs_log_force_umount(struct xfs_mount *mp, int logerror);

struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
void	  xfs_log_ticket_put(struct xlog_ticket *ticket);

void	xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
				xfs_lsn_t *commit_lsn, bool regrant);
bool	xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);

void	xfs_log_work_queue(struct xfs_mount *mp);
void	xfs_log_quiesce(struct xfs_mount *mp);
bool	xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);

#endif	/* __XFS_LOG_H__ */
/linux/net-next.git/tree/?id=c26665ab5c49ad3e142e0f054ca3204f259ba09c'>3bab11918e18e9d25ef7544dba05cdf39d1abec5</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/core/ledtrig-usbport.c?id=c26665ab5c49ad3e142e0f054ca3204f259ba09c'>drivers/usb/core/ledtrig-usbport.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/core/ledtrig-usbport.c?id=7a308bb3016f57e5be11a677d15b821536419d36'>7a308bb3016f57e5be11a677d15b821536419d36</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/core/ledtrig-usbport.c?id=c26665ab5c49ad3e142e0f054ca3204f259ba09c&amp;id2=7a308bb3016f57e5be11a677d15b821536419d36'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/microcode/intel: Drop stashed AP patch pointer optimization</div><div class='commit-msg'>This was meant to save us the scanning of the microcode containter in
the initrd since the first AP had already done that but it can also hurt
us:

Imagine a single hyperthreaded CPU (Intel(R) Atom(TM) CPU N270, for
example) which updates the microcode on the BSP but since the microcode
engine is shared between the two threads, the update on CPU1 doesn't
happen because it has already happened on CPU0 and we don't find a newer
microcode revision on CPU1.

Which doesn't set the intel_ucode_patch pointer and at initrd
jettisoning time we don't save the microcode patch for later
application.

Now, when we suspend to RAM, the loaded microcode gets cleared so we
need to reload but there's no patch saved in the cache.

Removing the optimization fixes this issue and all is fine and dandy.

Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading")
Signed-off-by: Borislav Petkov &lt;bp@suse.de&gt;
Reviewed-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Link: http://lkml.kernel.org/r/20170120202955.4091-2-bp@alien8.de
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=c26665ab5c49ad3e142e0f054ca3204f259ba09c'>Diffstat</a> (limited to 'drivers/usb/core/ledtrig-usbport.c')</div><table summary='diffstat' class='diffstat'>