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um: export signals_enabled directly

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Use signals_enabled instead of always jumping through
a function call to read it, there's not much point in
that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Johannes Berg 2021-03-05 13:19:54 +01:00 committed by Richard Weinberger
parent 2efea7dfaa
commit fbb42e7fe2
5 changed files with 14 additions and 20 deletions
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10
arch/um/include/asm/irqflags.h
View File

@ -2,15 +2,15 @@
#ifndef __UM_IRQFLAGS_H
#define __UM_IRQFLAGS_H
extern int get_signals(void);
extern int set_signals(int enable);
extern void block_signals(void);
extern void unblock_signals(void);
extern int signals_enabled;
int set_signals(int enable);
void block_signals(void);
void unblock_signals(void);
#define arch_local_save_flags arch_local_save_flags
static inline unsigned long arch_local_save_flags(void)
{
return get_signals();
return signals_enabled;
}
#define arch_local_irq_restore arch_local_irq_restore

14
arch/um/include/shared/longjmp.h
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@ -5,6 +5,7 @@
#include <sysdep/archsetjmp.h>
#include <os.h>
extern int signals_enabled;
extern int setjmp(jmp_buf);
extern void longjmp(jmp_buf, int);
@ -12,13 +13,12 @@ extern void longjmp(jmp_buf, int);
longjmp(*buf, val); \
} while(0)
#define UML_SETJMP(buf) ({ \
int n; \
volatile int enable; \
enable = get_signals(); \
n = setjmp(*buf); \
if(n != 0) \
set_signals_trace(enable); \
#define UML_SETJMP(buf) ({ \
int n, enable; \
enable = *(volatile int *)&signals_enabled; \
n = setjmp(*buf); \
if(n != 0) \
set_signals_trace(enable); \
n; })
#endif

1
arch/um/include/shared/os.h
View File

@ -237,7 +237,6 @@ extern void send_sigio_to_self(void);
extern int change_sig(int signal, int on);
extern void block_signals(void);
extern void unblock_signals(void);
extern int get_signals(void);
extern int set_signals(int enable);
extern int set_signals_trace(int enable);
extern int os_is_signal_stack(void);

2
arch/um/kernel/ksyms.c
View File

@ -7,7 +7,7 @@
#include <os.h>
EXPORT_SYMBOL(set_signals);
EXPORT_SYMBOL(get_signals);
EXPORT_SYMBOL(signals_enabled);
EXPORT_SYMBOL(os_stat_fd);
EXPORT_SYMBOL(os_stat_file);

7
arch/um/os-Linux/signal.c
View File

@ -62,7 +62,7 @@ static void sig_handler_common(int sig, struct siginfo *si, mcontext_t *mc)
#define SIGALRM_BIT 1
#define SIGALRM_MASK (1 << SIGALRM_BIT)
static int signals_enabled;
int signals_enabled;
static unsigned int signals_pending;
static unsigned int signals_active = 0;
@ -334,11 +334,6 @@ void unblock_signals(void)
}
}
int get_signals(void)
{
return signals_enabled;
}
int set_signals(int enable)
{
int ret;