RLIM_INFINITY differ from 32 and 64 bit.
The rest is equal.
:$ diff -u include/asm-sparc/resource.h include/asm-sparc64/resource.h
:-- include/asm-sparc/resource.h 2008-06-13 06:46:39.000000000 +0200
:++ include/asm-sparc64/resource.h 2008-06-13 06:46:39.000000000 +0200
:@@ -1,11 +1,11 @@
: /*
: * resource.h: Resource definitions.
: *
:- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
:+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
: */
:
:-#ifndef _SPARC_RESOURCE_H
:-#define _SPARC_RESOURCE_H
:+#ifndef _SPARC64_RESOURCE_H
:+#define _SPARC64_RESOURCE_H
:
: /*
: * These two resource limit IDs have a Sparc/Linux-specific ordering,
:@@ -14,13 +14,6 @@
: #define RLIMIT_NOFILE 6 /* max number of open files */
: #define RLIMIT_NPROC 7 /* max number of processes */
:
:-/*
:- * SuS says limits have to be unsigned.
:- * We make this unsigned, but keep the
:- * old value for compatibility:
:- */
:-#define RLIM_INFINITY 0x7fffffff
:-
: #include <asm-generic/resource.h>
:
:-#endif /* !(_SPARC_RESOURCE_H) */
:+#endif /* !(_SPARC64_RESOURCE_H) */
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
There were only a few trivial changes and a few additions
in the sparc64 variant of this file.
This patch copies the sparc64 specific bits to the sparc version
of fbio.h so they are equal. A later patch will merge the two.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Padding in the sembuf structure made conditional
as only 32 bit sparc did so.
:$ diff -u include/asm-sparc/sembuf.h include/asm-sparc64/sembuf.h
:-- include/asm-sparc/sembuf.h 2008-06-13 06:42:07.000000000 +0200
:++ include/asm-sparc64/sembuf.h 2008-06-13 06:42:07.000000000 +0200
:@@ -1,21 +1,18 @@
:-#ifndef _SPARC_SEMBUF_H
:-#define _SPARC_SEMBUF_H
:+#ifndef _SPARC64_SEMBUF_H
:+#define _SPARC64_SEMBUF_H
:
: /*
:- * The semid64_ds structure for sparc architecture.
:+ * The semid64_ds structure for sparc64 architecture.
: * Note extra padding because this structure is passed back and forth
: * between kernel and user space.
: *
: * Pad space is left for:
:- * - 64-bit time_t to solve y2038 problem
:- * - 2 miscellaneous 32-bit values
:+ * - 2 miscellaneous 64-bit values
: */
:
: struct semid64_ds {
: struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
:- unsigned int __pad1;
: __kernel_time_t sem_otime; /* last semop time */
:- unsigned int __pad2;
: __kernel_time_t sem_ctime; /* last change time */
: unsigned long sem_nsems; /* no. of semaphores in array */
: unsigned long __unused1;
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Padding from 32 bit sparc kept using preprocessor magic
:$ diff -u include/asm-sparc/msgbuf.h include/asm-sparc64/msgbuf.h
:-- include/asm-sparc/msgbuf.h 2008-06-13 06:42:07.000000000 +0200
:++ include/asm-sparc64/msgbuf.h 2008-06-13 06:42:07.000000000 +0200
:@@ -7,17 +7,13 @@
: * between kernel and user space.
: *
: * Pad space is left for:
:- * - 64-bit time_t to solve y2038 problem
:- * - 2 miscellaneous 32-bit values
:+ * - 2 miscellaneous 64-bit values
: */
:
: struct msqid64_ds {
: struct ipc64_perm msg_perm;
:- unsigned int __pad1;
: __kernel_time_t msg_stime; /* last msgsnd time */
:- unsigned int __pad2;
: __kernel_time_t msg_rtime; /* last msgrcv time */
:- unsigned int __pad3;
: __kernel_time_t msg_ctime; /* last change time */
: unsigned long msg_cbytes; /* current number of bytes on queue */
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Trivial differenses in comments - used the version from sparc64
:$ diff -u include/asm-sparc/ioctls.h include/asm-sparc64/ioctls.h
:-- include/asm-sparc/ioctls.h 2008-06-13 08:46:29.000000000 +0200
:++ include/asm-sparc64/ioctls.h 2008-06-13 08:46:29.000000000 +0200
:@@ -1,5 +1,5 @@
:-#ifndef _ASM_SPARC_IOCTLS_H
:-#define _ASM_SPARC_IOCTLS_H
:+#ifndef _ASM_SPARC64_IOCTLS_H
:+#define _ASM_SPARC64_IOCTLS_H
:
: #include <asm/ioctl.h>
:
:@@ -22,7 +22,7 @@
:
: /* Note that all the ioctls that are not available in Linux have a
: * double underscore on the front to: a) avoid some programs to
:- * thing we support some ioctls under Linux (autoconfiguration stuff)
:+ * think we support some ioctls under Linux (autoconfiguration stuff)
: */
: /* Little t */
: #define TIOCGETD _IOR('t', 0, int)
:@@ -110,7 +110,7 @@
: #define TIOCSERGETLSR 0x5459 /* Get line status register */
: #define TIOCSERGETMULTI 0x545A /* Get multiport config */
: #define TIOCSERSETMULTI 0x545B /* Set multiport config */
:-#define TIOCMIWAIT 0x545C /* Wait input */
:+#define TIOCMIWAIT 0x545C /* Wait for change on serial input line(s) */
: #define TIOCGICOUNT 0x545D /* Read serial port inline interrupt counts */
:
: /* Kernel definitions */
:@@ -133,4 +133,4 @@
: #define TIOCPKT_NOSTOP 16
: #define TIOCPKT_DOSTOP 32
:
:-#endif /* !(_ASM_SPARC_IOCTLS_H) */
:+#endif /* !(_ASM_SPARC64_IOCTLS_H) */
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Copy was done using the following simple script:
set -e
SPARC64="h display7seg.h envctrl.h psrcompat.h pstate.h uctx.h utrap.h watchdog.h"
for FILE in ${SPARC64}; do
if [ -f asm-sparc/$FILE ]; then
echo $FILE exist in asm-sparc
fi
cat asm-sparc64/$FILE > asm-sparc/$FILE
printf "#include <asm-sparc/$FILE>\n" > asm-sparc64/$FILE
done
The name of the copied files are added to asm-sparc/Kbuild
to keep "make headers_check" functional.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This seems to be left from the long gone AP1000 support.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have to have exclusive access to the given qdisc anyways, so
doing even more locking is superfluous.
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sch_tree_lock() lock the qdisc's root. All of the
users hold the RTNL semaphore and the root qdisc is not
changing.
Implement tbf_tree_{lock,unlock}() simply in terms of
sch_tree_{lock,unlock}().
Signed-off-by: David S. Miller <davem@davemloft.net>
When we have shared qdiscs, packets come out of the qdiscs
for multiple transmit queues.
Therefore it doesn't make any sense to schedule the transmit
queue when logically we cannot know ahead of time the TX
queue of the SKB that the qdisc->dequeue() will give us.
Just for sanity I added a BUG check to make sure we never
get into a state where the noop_qdisc is scheduled.
Signed-off-by: David S. Miller <davem@davemloft.net>
When code wants to lock the qdisc tree state, the logic
operation it's doing is locking the top-level qdisc that
sits of the root of the netdev_queue.
Add qdisc_root_lock() to represent this and convert the
easiest cases.
In order for this to work out in all cases, we have to
hook up the noop_qdisc to a dummy netdev_queue.
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently it is associated with a netdev_queue, but when we have
qdisc sharing that no longer makes any sense.
Signed-off-by: David S. Miller <davem@davemloft.net>
We liberate any dangling gso_skb during qdisc destruction.
It really only matters for the root qdisc. But when qdiscs
can be shared by multiple netdev_queue objects, we can't
have the gso_skb in the netdev_queue any more.
Signed-off-by: David S. Miller <davem@davemloft.net>
The only behavior change is that we do not drop packets under any
circumstances. If that is absolutely needed, we could easily add it
back.
With cleanups and help from Johannes Berg.
Signed-off-by: David S. Miller <davem@davemloft.net>
Devices or device layers can set this to control the queue selection
performed by dev_pick_tx().
This function runs under RCU protection, which allows overriding
functions to have some way of synchronizing with things like dynamic
->real_num_tx_queues adjustments.
This makes the spinlock prefetch in dev_queue_xmit() a little bit
less effective, but that's the price right now for correctness.
Signed-off-by: David S. Miller <davem@davemloft.net>
The private area of a netdev is now at a fixed offset once more.
Unfortunately, some assumptions that netdev_priv() == netdev->priv
crept back into the tree. In particular this happened in the
loopback driver. Make it use netdev->ml_priv.
Signed-off-by: David S. Miller <davem@davemloft.net>
This effectively "flips the switch" by making the core networking
and multiqueue-aware drivers use the new TX multiqueue structures.
Non-multiqueue drivers need no changes. The interfaces they use such
as netif_stop_queue() degenerate into an operation on TX queue zero.
So everything "just works" for them.
Code that really wants to do "X" to all TX queues now invokes a
routine that does so, such as netif_tx_wake_all_queues(),
netif_tx_stop_all_queues(), etc.
pktgen and netpoll required a little bit more surgery than the others.
In particular the pktgen changes, whilst functional, could be largely
improved. The initial check in pktgen_xmit() will sometimes check the
wrong queue, which is mostly harmless. The thing to do is probably to
invoke fill_packet() earlier.
The bulk of the netpoll changes is to make the code operate solely on
the TX queue indicated by by the SKB queue mapping.
Setting of the SKB queue mapping is entirely confined inside of
net/core/dev.c:dev_pick_tx(). If we end up needing any kind of
special semantics (drops, for example) it will be implemented here.
Finally, we now have a "real_num_tx_queues" which is where the driver
indicates how many TX queues are actually active.
With IGB changes from Jeff Kirsher.
Signed-off-by: David S. Miller <davem@davemloft.net>
This actually fixes a bug added by the RR scheduler changes. The
->bands and ->prio2band parameters were being set outside of the
sch_tree_lock() and thus could result in strange behavior and
inconsistencies.
It might be possible, in the new design (where there will be one qdisc
per device TX queue) to allow similar functionality via a TX hash
algorithm for RR but I really see no reason to export this aspect of
how these multiqueue cards actually implement the scheduling of the
the individual DMA TX rings and the single physical MAC/PHY port.
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no need for a feature bit for something that
can be tested by simply checking the TX queue count.
Signed-off-by: David S. Miller <davem@davemloft.net>
alloc_netdev_mq() now allocates an array of netdev_queue
structures for TX, based upon the queue_count argument.
Furthermore, all accesses to the TX queues are now vectored
through the netdev_get_tx_queue() and netdev_for_each_tx_queue()
interfaces. This makes it easy to grep the tree for all
things that want to get to a TX queue of a net device.
Problem spots which are not really multiqueue aware yet, and
only work with one queue, can easily be spotted by grepping
for all netdev_get_tx_queue() calls that pass in a zero index.
Signed-off-by: David S. Miller <davem@davemloft.net>
All callers of async_tx_sync_epilog have called async_tx_quiesce on the
depend_tx, so async_tx_sync_epilog need only call the callback to
complete the operation.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The configfs operations ->make_item() and ->make_group() currently
return a new item/group. A return of NULL signifies an error. Because
of this, -ENOMEM is the only return code bubbled up the stack.
Multiple folks have requested the ability to return specific error codes
when these operations fail. This patch adds that ability by changing the
->make_item/group() ops to return ERR_PTR() values. These errors are
bubbled up appropriately. NULL returns are changed to -ENOMEM for
compatibility.
Also updated are the in-kernel users of configfs.
This is a rework of reverted commit 11c3b79218.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Merge the GDT_ENTRY() macro between arch/x86/boot/pm.c and
arch/x86/kernel/acpi/sleep.c and put the new one in
<asm-x86/segment.h>.
While we're at it, correct the bitmasks for the limit and flags. The
new version relies on using ULL constants in order to cause type
promotion rather than explicit casts; this avoids having to include
<linux/types.h> in <asm-x86/segments.h>.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
