linux/arch/alpha
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
..
boot alpha: Replace strncmp with str_has_prefix 2020-06-12 17:43:17 -07:00
configs Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
include saner calling conventions for csum_and_copy_..._user() 2020-08-20 15:45:15 -04:00
kernel sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
lib alpha: propagate the calling convention changes down to csum_partial_copy.c helpers 2020-08-20 15:45:16 -04:00
math-emu treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mm mm/alpha: use general page fault accounting 2020-08-12 10:58:03 -07:00
oprofile smp: Remove smp_call_function() and on_each_cpu() return values 2019-06-23 14:26:26 +02:00
Kconfig uaccess: add infrastructure for kernel builds with set_fs() 2020-09-08 22:21:32 -04:00
Kconfig.debug treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG 2019-06-09 15:08:18 +09:00