linux/arch/sh
Peter Zijlstra 58c644ba51 sched/idle: Fix arch_cpu_idle() vs tracing
We call arch_cpu_idle() with RCU disabled, but then use
local_irq_{en,dis}able(), which invokes tracing, which relies on RCU.

Switch all arch_cpu_idle() implementations to use
raw_local_irq_{en,dis}able() and carefully manage the
lockdep,rcu,tracing state like we do in entry.

(XXX: we really should change arch_cpu_idle() to not return with
interrupts enabled)

Reported-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/20201120114925.594122626@infradead.org
2020-11-24 16:47:35 +01:00
..
boards treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
boot kbuild: introduce ccflags-remove-y and asflags-remove-y 2020-08-10 01:32:59 +09:00
cchips treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
configs Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
drivers dma-mapping: move dma-debug.h to kernel/dma/ 2020-10-06 07:07:05 +02:00
include treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
kernel sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
lib sh: propage the calling conventions change down to csum_partial_copy_generic() 2020-08-20 15:45:18 -04:00
math-emu Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
mm arch, mm: replace for_each_memblock() with for_each_mem_pfn_range() 2020-10-13 18:38:35 -07:00
oprofile sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
tools sh: Remove SH5-based Cayman platform 2020-08-14 22:05:06 -04:00
Kconfig Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-22 09:59:21 -07:00
Kconfig.cpu docs: sh: convert register-banks.txt to ReST 2020-06-19 14:10:13 -06:00
Kconfig.debug sh: remove sh5 support 2020-06-01 14:48:52 -04:00
Makefile sh: Remove SH5-based Cayman platform 2020-08-14 22:05:06 -04:00