AcoSail/kernel_optimize_test
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ff522058bd
kernel_optimize_test/arch
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Ralf Baechle ff522058bd MIPS: Fix accessing to per-cpu data when flushing the cache 
This fixes the following issue

BUG: using smp_processor_id() in preemptible [00000000] code: kjournald/1761
caller is blast_dcache32+0x30/0x254
Call Trace:
[<8047f02c>] dump_stack+0x8/0x34
[<802e7e40>] debug_smp_processor_id+0xe0/0xf0
[<80114d94>] blast_dcache32+0x30/0x254
[<80118484>] r4k_dma_cache_wback_inv+0x200/0x288
[<80110ff0>] mips_dma_map_sg+0x108/0x180
[<80355098>] ide_dma_prepare+0xf0/0x1b8
[<8034eaa4>] do_rw_taskfile+0x1e8/0x33c
[<8035951c>] ide_do_rw_disk+0x298/0x3e4
[<8034a3c4>] do_ide_request+0x2e0/0x704
[<802bb0dc>] __blk_run_queue+0x44/0x64
[<802be000>] queue_unplugged.isra.36+0x1c/0x54
[<802beb94>] blk_flush_plug_list+0x18c/0x24c
[<802bec6c>] blk_finish_plug+0x18/0x48
[<8026554c>] journal_commit_transaction+0x3b8/0x151c
[<80269648>] kjournald+0xec/0x238
[<8014ac00>] kthread+0xb8/0xc0
[<8010268c>] ret_from_kernel_thread+0x14/0x1c

Caches in most systems are identical - but not always, so we can't avoid
the use of smp_call_function() by just looking at the boot CPU's data,
have to fiddle with preemption instead.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5835
2013-09-17 17:46:19 +02:00
..
alpha Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
arc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
arm Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-16 16:10:26 -04:00
arm64 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
avr32 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
blackfin Merge branch 'genirq' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-09-13 07:31:38 -07:00
c6x Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
cris Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
frv Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
h8300 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
hexagon Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
ia64 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
m32r Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
m68k Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
metag Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
microblaze Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
mips MIPS: Fix accessing to per-cpu data when flushing the cache 2013-09-17 17:46:19 +02:00
mn10300 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
openrisc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
parisc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
powerpc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
s390 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
score Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
sh Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
sparc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
tile Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
um Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
unicore32 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
x86 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
xtensa Xtensa patchset for v3.12 2013-09-13 10:57:48 -07:00
.gitignore
Kconfig microblaze: fix clone syscall 2013-08-13 17:57:48 -07:00