android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
611c390217
android_kernel_samsung_sm8650/arch
History
Heiko Carstens 611c390217 s390/idle: mark arch_cpu_idle() noinstr 
[ Upstream commit a9cbc1b471d291c865907542394f1c483b93a811 ]

linux-next commit ("cpuidle: tracing: Warn about !rcu_is_watching()")
adds a new warning which hits on s390's arch_cpu_idle() function:

RCU not on for: arch_cpu_idle+0x0/0x28
WARNING: CPU: 2 PID: 0 at include/linux/trace_recursion.h:162 arch_ftrace_ops_list_func+0x24c/0x258
Modules linked in:
CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.2.0-rc6-next-20230202 #4
Hardware name: IBM 8561 T01 703 (z/VM 7.3.0)
Krnl PSW : 0404d00180000000 00000000002b55c0 (arch_ftrace_ops_list_func+0x250/0x258)
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: c0000000ffffbfff 0000000080000002 0000000000000026 0000000000000000
           0000037ffffe3a28 0000037ffffe3a20 0000000000000000 0000000000000000
           0000000000000000 0000000000f4acf6 00000000001044f0 0000037ffffe3cb0
           0000000000000000 0000000000000000 00000000002b55bc 0000037ffffe3bb8
Krnl Code: 00000000002b55b0: c02000840051        larl    %r2,0000000001335652
           00000000002b55b6: c0e5fff512d1        brasl   %r14,0000000000157b58
          #00000000002b55bc: af000000            mc      0,0
          >00000000002b55c0: a7f4ffe7            brc     15,00000000002b558e
           00000000002b55c4: 0707                bcr     0,%r7
           00000000002b55c6: 0707                bcr     0,%r7
           00000000002b55c8: eb6ff0480024        stmg    %r6,%r15,72(%r15)
           00000000002b55ce: b90400ef            lgr     %r14,%r15
Call Trace:
 [<00000000002b55c0>] arch_ftrace_ops_list_func+0x250/0x258
([<00000000002b55bc>] arch_ftrace_ops_list_func+0x24c/0x258)
 [<0000000000f5f0fc>] ftrace_common+0x1c/0x20
 [<00000000001044f6>] arch_cpu_idle+0x6/0x28
 [<0000000000f4acf6>] default_idle_call+0x76/0x128
 [<00000000001cc374>] do_idle+0xf4/0x1b0
 [<00000000001cc6ce>] cpu_startup_entry+0x36/0x40
 [<0000000000119d00>] smp_start_secondary+0x140/0x150
 [<0000000000f5d2ae>] restart_int_handler+0x6e/0x90

Mark arch_cpu_idle() noinstr like all other architectures with
CONFIG_ARCH_WANTS_NO_INSTR (should) have it to fix this.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-10 09:33:52 +01:00
..
alpha alpha/boot/tools/objstrip: fix the check for ELF header 2023-03-10 09:33:30 +01:00
arc ARC: mm: fix leakage of memory allocated for PTE 2022-10-17 16:32:12 -07:00
arm ARM: dts: exynos: Use Exynos5420 compatible for the MIPI video phy 2023-03-10 09:33:45 +01:00
arm64 arm64: zynqmp: Enable hs termination flag for USB dwc3 controller 2023-03-10 09:33:46 +01:00
csky - hfs and hfsplus kmap API modernization from Fabio Francesco 2022-10-12 11:00:22 -07:00
hexagon - hfs and hfsplus kmap API modernization from Fabio Francesco 2022-10-12 11:00:22 -07:00
ia64 ia64: fix build error due to switch case label appearing next to declaration 2023-02-09 11:28:23 +01:00
loongarch LoongArch, bpf: Use 4 instructions for function address in JIT 2023-03-10 09:33:06 +01:00
m68k m68k: Check syscall_trace_enter() return code 2023-03-10 09:33:51 +01:00
microblaze kbuild: fix "cat: .version: No such file or directory" 2022-11-24 09:26:02 +09:00
mips of/fdt: run soc memory setup when early_init_dt_scan_memory fails 2023-01-12 12:02:51 +01:00
nios2 nios2: add FORCE for vmlinuz.gz 2022-11-27 08:28:41 +09:00
openrisc OpenRISC 6.1 Updates 2022-10-15 16:47:33 -07:00
parisc parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case 2023-02-09 11:28:20 +01:00
powerpc powerpc: Remove linker flag from KBUILD_AFLAGS 2023-03-10 09:33:41 +01:00
riscv RISC-V: time: initialize hrtimer based broadcast clock event device 2023-03-10 09:33:03 +01:00
s390 s390/idle: mark arch_cpu_idle() noinstr 2023-03-10 09:33:52 +01:00
sh sh: define RUNTIME_DISCARD_EXIT 2023-02-25 11:25:42 +01:00
sparc sparc: allow PM configs for sparc32 COMPILE_TEST 2023-03-10 09:33:27 +01:00
um um: virt-pci: Avoid GCC non-NULL warning 2023-01-07 11:11:52 +01:00
x86 x86/bugs: Reset speculation control settings on init 2023-03-10 09:33:49 +01:00
xtensa xtensa: add __umulsidi3 helper 2023-01-07 11:11:46 +01:00
.gitignore
Kconfig ftrace: Allow WITH_ARGS flavour of graph tracer with shadow call stack 2022-12-31 13:32:45 +01:00