shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 03:40:35 +09:00
Code Issues Packages Projects Releases Wiki Activity

debug: fail to show active cpu stacks [1/1]

Browse Source 
PD#SWPL-4718

Problem:
The task stack address is not saved to irq_stack_ptr-0x08,
so when switching from irq stack to task stack, we can not
obtain the right task stack address

Solution:
save task stack address to irq_stack_ptr-0x08

Verify:
Locally on Ampere

Change-Id: I8ad9a45cee33681cc00de3a0bb264dbd9f1b859f
Signed-off-by: Jiamin Ma <jiamin.ma@amlogic.com>
This commit is contained in:
Jiamin Ma
2019-01-31 16:41:15 +08:00
committed by Luke Go
parent 989e6fdb69
commit 2e760511d0
1 changed files with 0 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/entry.S
View File

@@ -329,10 +329,8 @@ alternative_insn eret, nop, ARM64_UNMAP_KERNEL_AT_EL0
* Add a dummy stack frame, this non-standard format is fixed up
* by unwind_frame()
*/
#ifndef CONFIG_AMLOGIC_VMAP /* we need get right stack of el1_preempt */
stp x29, x19, [sp, #-16]!
mov x29, sp
#endif /* !CONFIG_AMLOGIC_VMAP */
9998:
.endm