diff options
| author | Tiwei Bie <tiwei.btw@antgroup.com> | 2025-10-27 08:18:09 +0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2025-10-27 16:41:15 +0100 |
| commit | 9e5a9f1c9b336871c8e76c1cefd85182c5b58541 (patch) | |
| tree | 7c8716d150f8ed5cfd146ba318d3e2b1bdcb78ee /arch/um/os-Linux/signal.c | |
| parent | 6aaf00d14e6c80f4664932d261be7a03834f558b (diff) | |
um: Turn signals_* into thread-local variables
Turn signals_enabled, signals_pending and signals_active into
thread-local variables. This enables us to control and track
signals independently on each CPU thread. This is a preparation
for adding SMP support.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20251027001815.1666872-3-tiwei.bie@linux.dev
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'arch/um/os-Linux/signal.c')
| -rw-r--r-- | arch/um/os-Linux/signal.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 11f07f498270..58da8c6ece98 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -68,12 +68,12 @@ static void sig_handler_common(int sig, struct siginfo *si, mcontext_t *mc) #define SIGCHLD_BIT 2 #define SIGCHLD_MASK (1 << SIGCHLD_BIT) -int signals_enabled; +static __thread int signals_enabled; #if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT) static int signals_blocked, signals_blocked_pending; #endif -static unsigned int signals_pending; -static unsigned int signals_active = 0; +static __thread unsigned int signals_pending; +static __thread unsigned int signals_active; static void sig_handler(int sig, struct siginfo *si, mcontext_t *mc) { @@ -342,6 +342,11 @@ void unblock_signals(void) } } +int um_get_signals(void) +{ + return signals_enabled; +} + int um_set_signals(int enable) { int ret; |