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authorJohannes Berg <johannes.berg@intel.com>2021-03-05 13:19:54 +0100
committerRichard Weinberger <richard@nod.at>2021-06-17 21:44:51 +0200
commitfbb42e7fe2c4962cb51776fff5462e6264d9716b (patch)
treea9274d662335cd9fd04711e78a586107b7cc3672 /arch/um
parent2efea7dfaa67eba020e88bcb07a10030de63dfa5 (diff)
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um: export signals_enabled directly
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>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/include/asm/irqflags.h10
-rw-r--r--arch/um/include/shared/longjmp.h14
-rw-r--r--arch/um/include/shared/os.h1
-rw-r--r--arch/um/kernel/ksyms.c2
-rw-r--r--arch/um/os-Linux/signal.c7
5 files changed, 14 insertions, 20 deletions
diff --git a/arch/um/include/asm/irqflags.h b/arch/um/include/asm/irqflags.h
index 0642ad9035d1..dab5744e9253 100644
--- a/arch/um/include/asm/irqflags.h
+++ b/arch/um/include/asm/irqflags.h
@@ -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
diff --git a/arch/um/include/shared/longjmp.h b/arch/um/include/shared/longjmp.h
index 85a1cc290ecb..bdb2869b72b3 100644
--- a/arch/um/include/shared/longjmp.h
+++ b/arch/um/include/shared/longjmp.h
@@ -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
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 13d86f94cf0f..f9fbbddc38bb 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -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);
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 8ade54a86a7e..b1e5634398d0 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -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);
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 96f511d1aabe..8c9d162e6c51 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -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;