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c6x: add support for TIF_NOTIFY_SIGNAL 

Wire up TIF_NOTIFY_SIGNAL handling for c6x.

Cc: linux-c6x-dev@linux-c6x.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-10-09 14:35:34 -06:00
parent 5a9a8897c2
commit 6d665a4d8b
3 changed files with 4 additions and 1 deletions
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1
arch/c6x/include/asm/thread_info.h
View File

@ -82,6 +82,7 @@ struct thread_info *current_thread_info(void)
#define TIF_SIGPENDING 2 /* signal pending */ #define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ #define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_MEMDIE 17 /* OOM killer killed process */ #define TIF_MEMDIE 17 /* OOM killer killed process */

1
arch/c6x/kernel/asm-offsets.c
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@ -116,6 +116,7 @@ void foo(void)
DEFINE(_TIF_NOTIFY_RESUME, (1<<TIF_NOTIFY_RESUME)); DEFINE(_TIF_NOTIFY_RESUME, (1<<TIF_NOTIFY_RESUME));
DEFINE(_TIF_SIGPENDING, (1<<TIF_SIGPENDING)); DEFINE(_TIF_SIGPENDING, (1<<TIF_SIGPENDING));
DEFINE(_TIF_NEED_RESCHED, (1<<TIF_NEED_RESCHED)); DEFINE(_TIF_NEED_RESCHED, (1<<TIF_NEED_RESCHED));
DEFINE(_TIF_NOTIFY_SIGNAL, (1<<TIF_NOTIFY_SIGNAL));
DEFINE(_TIF_ALLWORK_MASK, TIF_ALLWORK_MASK); DEFINE(_TIF_ALLWORK_MASK, TIF_ALLWORK_MASK);
DEFINE(_TIF_WORK_MASK, TIF_WORK_MASK); DEFINE(_TIF_WORK_MASK, TIF_WORK_MASK);

3
arch/c6x/kernel/signal.c
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@ -13,6 +13,7 @@
#include <linux/syscalls.h> #include <linux/syscalls.h>
#include <linux/tracehook.h> #include <linux/tracehook.h>
#include <asm/asm-offsets.h>
#include <asm/ucontext.h> #include <asm/ucontext.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
@ -313,7 +314,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
int syscall) int syscall)
{ {
/* deal with pending signal delivery */ /* deal with pending signal delivery */
if (thread_info_flags & (1 << TIF_SIGPENDING)) if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, syscall); do_signal(regs, syscall);
if (thread_info_flags & (1 << TIF_NOTIFY_RESUME)) if (thread_info_flags & (1 << TIF_NOTIFY_RESUME))