linux-toradex.git/include/asm-xtensa, branch v2.6.18-rc7

[PATCH] remove set_wmb - arch removal

2006-07-15T04:56:14+00:00

set_wmb should not be used in the kernel because it just confuses the
code more and has no benefit.  Since it is not currently used in the
kernel this patch removes it so that new code does not include it.

All archs define set_wmb(var, value) to do { var = value; wmb(); }
while(0) except ia64 and sparc which use a mb() instead.  But this is
still moot since it is not used anyway.

Hasn't been tested on any archs but x86 and x86_64 (and only compiled
tested)

Signed-off-by: Steven Rostedt 
Signed-off-by: Linus Torvalds

[PATCH] Make cpu_relax() imply barrier() on all arches

2006-07-12T19:56:45+00:00

During the recent discussion of taking 'volatile' off of the spinlock, I
noticed that while most arches #define cpu_relax() such that it implies
barrier(), some arches define cpu_relax() to be empty.

This patch changes the definition of cpu_relax() for frv, h8300, m68knommu,
sh, sh64, v850 and xtensa from an empty while(0) to the compiler barrier().

Signed-off-by: Chase Venters 
Acked-by: Arjan van de Ven 
Signed-off-by: Linus Torvalds

Merge git://git.infradead.org/hdrinstall-2.6

2006-07-04T19:55:45+00:00

* git://git.infradead.org/hdrinstall-2.6:
  Remove export of include/linux/isdn/tpam.h
  Remove  and  from userspace export
  Restrict headers exported to userspace for SPARC and SPARC64
  Add empty Kbuild files for 'make headers_install' in remaining arches.
  Add Kbuild file for Alpha 'make headers_install'
  Add Kbuild file for SPARC 'make headers_install'
  Add Kbuild file for IA64 'make headers_install'
  Add Kbuild file for S390 'make headers_install'
  Add Kbuild file for i386 'make headers_install'
  Add Kbuild file for x86_64 'make headers_install'
  Add Kbuild file for PowerPC 'make headers_install'
  Add generic Kbuild files for 'make headers_install'
  Basic implementation of 'make headers_check'
  Basic implementation of 'make headers_install'

[PATCH] lockdep: remove RWSEM_DEBUG remnants

2006-07-03T22:27:01+00:00

RWSEM_DEBUG used to be a printk based 'tracing' facility, probably used for
very early prototypes of the rwsem code.  Remove it.

Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] irq-flags: XTENSA: Use the new IRQF_ constants

2006-07-02T20:58:49+00:00

Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "David S. Miller" 
Cc: Benjamin Herrenschmidt 
Cc: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[AF_UNIX]: Datagram getpeersec

2006-06-29T23:58:06+00:00

This patch implements an API whereby an application can determine the
label of its peer's Unix datagram sockets via the auxiliary data mechanism of
recvmsg.

Patch purpose:

This patch enables a security-aware application to retrieve the
security context of the peer of a Unix datagram socket.  The application
can then use this security context to determine the security context for
processing on behalf of the peer who sent the packet.

Patch design and implementation:

The design and implementation is very similar to the UDP case for INET
sockets.  Basically we build upon the existing Unix domain socket API for
retrieving user credentials.  Linux offers the API for obtaining user
credentials via ancillary messages (i.e., out of band/control messages
that are bundled together with a normal message).  To retrieve the security
context, the application first indicates to the kernel such desire by
setting the SO_PASSSEC option via getsockopt.  Then the application
retrieves the security context using the auxiliary data mechanism.

An example server application for Unix datagram socket should look like this:

toggle = 1;
toggle_len = sizeof(toggle);

setsockopt(sockfd, SOL_SOCKET, SO_PASSSEC, &toggle, &toggle_len);
recvmsg(sockfd, &msg_hdr, 0);
if (msg_hdr.msg_controllen > sizeof(struct cmsghdr)) {
    cmsg_hdr = CMSG_FIRSTHDR(&msg_hdr);
    if (cmsg_hdr->cmsg_len <= CMSG_LEN(sizeof(scontext)) &&
        cmsg_hdr->cmsg_level == SOL_SOCKET &&
        cmsg_hdr->cmsg_type == SCM_SECURITY) {
        memcpy(&scontext, CMSG_DATA(cmsg_hdr), sizeof(scontext));
    }
}

sock_setsockopt is enhanced with a new socket option SOCK_PASSSEC to allow
a server socket to receive security context of the peer.

Testing:

We have tested the patch by setting up Unix datagram client and server
applications.  We verified that the server can retrieve the security context
using the auxiliary data mechanism of recvmsg.

Signed-off-by: Catherine Zhang 
Acked-by: Acked-by: James Morris 
Signed-off-by: David S. Miller

[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()

2006-06-29T17:26:23+00:00

Add ->retrigger() irq op to consolidate hw_irq_resend() implementations.
(Most architectures had it defined to NOP anyway.)

NOTE: ia64 needs testing. i386 and x86_64 tested.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] xtensa: remove verify_area macros

2006-06-23T14:43:02+00:00

verify_area() is still alive on xtensa in 2.6.17-rc3-git13 It would be nice
to finally be rid of that function across the board.

Signed-off-by: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use

2006-06-22T22:05:58+00:00

VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

Signed-off-by: Bjorn Helgaas 
Cc: "Antonino A. Daplas" 
Cc: "Luck, Tony" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Add empty Kbuild files for 'make headers_install' in remaining arches.

2006-06-18T11:58:53+00:00

These include nothing more than the basic set of files listed in
asm-generic/Kbuild.asm. Any extra arch-specific files will need to be
added.

Signed-off-by: David Woodhouse