BMC/Intel-BMC/linux.git/arch/m32r/include/asm/uaccess.h, branch devIntel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev2015-05-19T06:39:14+00:00mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled2015-05-19T06:39:14+00:00David Hildenbranddahi@linux.vnet.ibm.com2015-05-11T15:52:08+00:00urn:sha1:b3c395ef5556a6c60f4426cc060f5b7bdcf82d5b
In general, non-atomic variants of user access functions must not sleep
if pagefaults are disabled.
Let's update all relevant comments in uaccess code. This also reflects
the might_sleep() checks in might_fault().
Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David.Laight@ACULAB.COM
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: airlied@linux.ie
Cc: akpm@linux-foundation.org
Cc: benh@kernel.crashing.org
Cc: bigeasy@linutronix.de
Cc: borntraeger@de.ibm.com
Cc: daniel.vetter@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: hocko@suse.cz
Cc: hughd@google.com
Cc: mst@redhat.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: schwidefsky@de.ibm.com
Cc: yang.shi@windriver.com
Link: http://lkml.kernel.org/r/1431359540-32227-4-git-send-email-dahi@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
m32r: macro whitespace fixes2015-01-13T13:24:01+00:00Michael S. Tsirkinmst@redhat.com2015-01-06T13:11:13+00:00urn:sha1:0ab066042dea23fe03d2eabc9dc5771dab4e81d4
While working on arch/m32r/include/asm/uaccess.h, I noticed
that some macros within this header are made harder to read because they
violate a coding style rule: space is missing after comma.
Fix it up.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
m32r/uaccess: fix sparse errors2015-01-13T13:23:13+00:00Michael S. Tsirkinmst@redhat.com2014-12-11T23:56:04+00:00urn:sha1:a618337e8cd811f07bd660a857d5d9f0201f042b
virtio wants to read bitwise types from userspace using get_user. At the
moment this triggers sparse errors, since the value is passed through an
integer.
Fix that up using __force.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
m32r: uaccess s/might_sleep/might_fault/2013-05-28T07:41:07+00:00Michael S. Tsirkinmst@redhat.com2013-05-26T14:30:51+00:00urn:sha1:01682576d5fd1c92b96d79560b17208a6567c331
The only reason uaccess routines might sleep
is if they fault. Make this explicit.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1369577426-26721-4-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
m32r: move include/asm-m32r headers to arch/m32r/include/asm2009-04-17T01:05:01+00:00Hirokazu Takatatakata@linux-m32r.org2008-11-27T17:46:48+00:00urn:sha1:fe4e719d82c4052751d2287de4bd18bd04e93685
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>