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authorKees Cook <keescook@chromium.org>2021-09-29 15:02:14 -0700
committerPeter Zijlstra <peterz@infradead.org>2021-10-15 11:25:14 +0200
commit42a20f86dc19f9282d974df0ba4d226c865ab9dd (patch)
tree548e09e31785a53f7907e0e4c28471d0e53fcbb5 /arch/openrisc
parentbc9bbb81730ea667c31c5b284f95ee312bab466f (diff)
downloadlinux-42a20f86dc19f9282d974df0ba4d226c865ab9dd.tar.bz2
sched: Add wrapper for get_wchan() to keep task blocked
Having a stable wchan means the process must be blocked and for it to stay that way while performing stack unwinding. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> [arm] Tested-by: Mark Rutland <mark.rutland@arm.com> [arm64] Link: https://lkml.kernel.org/r/20211008111626.332092234@infradead.org
Diffstat (limited to 'arch/openrisc')
-rw-r--r--arch/openrisc/include/asm/processor.h2
-rw-r--r--arch/openrisc/kernel/process.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/openrisc/include/asm/processor.h b/arch/openrisc/include/asm/processor.h
index ad53b3184885..aa1699c18add 100644
--- a/arch/openrisc/include/asm/processor.h
+++ b/arch/openrisc/include/asm/processor.h
@@ -73,7 +73,7 @@ struct thread_struct {
void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp);
void release_thread(struct task_struct *);
-unsigned long get_wchan(struct task_struct *p);
+unsigned long __get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c
index b0698d9ce14f..3c0c91bcdcba 100644
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -263,7 +263,7 @@ void dump_elf_thread(elf_greg_t *dest, struct pt_regs* regs)
dest[35] = 0;
}
-unsigned long get_wchan(struct task_struct *p)
+unsigned long __get_wchan(struct task_struct *p)
{
/* TODO */