linux/arch
Ira Weiny 01c4b788e0 arch/kmap: remove BUG_ON()
Patch series "Remove duplicated kmap code", v3.

The kmap infrastructure has been copied almost verbatim to every
architecture.  This series consolidates obvious duplicated code by
defining core functions which call into the architectures only when
needed.

Some of the k[un]map_atomic() implementations have some similarities but
the similarities were not sufficient to warrant further changes.

In addition we remove a duplicate implementation of kmap() in DRM.

This patch (of 15):

Replace the use of BUG_ON(in_interrupt()) in the kmap() and kunmap() in
favor of might_sleep().

Besides the benefits of might_sleep(), this normalizes the implementations
such that they can be made generic in subsequent patches.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Link: http://lkml.kernel.org/r/20200507150004.1423069-1-ira.weiny@intel.com
Link: http://lkml.kernel.org/r/20200507150004.1423069-2-ira.weiny@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-04 19:06:22 -07:00
..
alpha alpha: simplify detection of memory zone boundaries 2020-06-03 20:09:43 -07:00
arc arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
arm arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
arm64 mm/debug: add tests validating architecture page table helpers 2020-06-04 19:06:21 -07:00
c6x mm: free_area_init: use maximal zone PFNs rather than zone sizes 2020-06-03 20:09:43 -07:00
csky arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
h8300 h8300: remove usage of __ARCH_USE_5LEVEL_HACK 2020-06-04 19:06:20 -07:00
hexagon hexagon: remove __ARCH_USE_5LEVEL_HACK 2020-06-04 19:06:21 -07:00
ia64 ia64: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
m68k m68k: mm: simplify detection of memory zone boundaries 2020-06-03 20:09:43 -07:00
microblaze arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
mips arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
nds32 arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
nios2 nios2: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
openrisc openrisc: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
parisc Merge branch 'akpm' (patches from Andrew) 2020-06-03 20:24:15 -07:00
powerpc arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
riscv Merge branch 'akpm' (patches from Andrew) 2020-06-03 20:24:15 -07:00
s390 mm/debug: add tests validating architecture page table helpers 2020-06-04 19:06:21 -07:00
sh sh: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
sparc arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
um mm: free_area_init: use maximal zone PFNs rather than zone sizes 2020-06-03 20:09:43 -07:00
unicore32 unicore32: remove __ARCH_USE_5LEVEL_HACK 2020-06-04 19:06:21 -07:00
x86 arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
xtensa arch/kmap: remove BUG_ON() 2020-06-04 19:06:22 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kconfig scs: Remove references to asm/scs.h from core code 2020-05-18 17:47:45 +01:00