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| author |   Brian Gerst <brgerst@gmail.com> | 2016-08-13 12:38:18 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-08-24 12:27:41 +0200 |
| commit | 7b32aeadbc95d4a41402c1c0da6aa3ab51af4c10 (patch) | |
| tree | 8ae68aec049bfffe5fdcd725836bd31c61538fda /arch/x86/kernel/kgdb.c | |
| parent | sched/x86/64, kgdb: Clear GDB_PS on 64-bit (diff) | |
| download | linux-dev-7b32aeadbc95d4a41402c1c0da6aa3ab51af4c10.tar.xz linux-dev-7b32aeadbc95d4a41402c1c0da6aa3ab51af4c10.zip | |
sched/x86: Add 'struct inactive_task_frame' to better document the sleeping task stack frame
Add 'struct inactive_task_frame', which defines the layout of the stack for
a sleeping process. For now, the only defined field is the BP register
(frame pointer).
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1471106302-10159-4-git-send-email-brgerst@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/kgdb.c')
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index 5e3f294ce264..8e36f249646e 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -50,6 +50,7 @@ #include <asm/apicdef.h> #include <asm/apic.h> #include <asm/nmi.h> +#include <asm/switch_to.h> struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = { @@ -166,7 +167,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p) gdb_regs[GDB_DX] = 0; gdb_regs[GDB_SI] = 0; gdb_regs[GDB_DI] = 0; - gdb_regs[GDB_BP] = *(unsigned long *)p->thread.sp; + gdb_regs[GDB_BP] = ((struct inactive_task_frame *)p->thread.sp)->bp; #ifdef CONFIG_X86_32 gdb_regs[GDB_DS] = __KERNEL_DS; gdb_regs[GDB_ES] = __KERNEL_DS; |