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um: add TIF_NOTIFY_RESUME

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-04-24 02:37:07 -04:00
parent 3b7d15bde5
commit d50349b0c3
2 changed files with 8 additions and 1 deletions
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1
arch/um/include/asm/thread_info.h
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@@ -71,6 +71,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_MEMDIE 5 /* is terminating due to OOM killer */
#define TIF_SYSCALL_AUDIT 6 #define TIF_SYSCALL_AUDIT 6
#define TIF_RESTORE_SIGMASK 7 #define TIF_RESTORE_SIGMASK 7
#define TIF_NOTIFY_RESUME 8
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)

8
arch/um/kernel/process.c
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@@ -18,6 +18,7 @@
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/tick.h> #include <linux/tick.h>
#include <linux/threads.h> #include <linux/threads.h>
#include <linux/tracehook.h>
#include <asm/current.h> #include <asm/current.h>
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include <asm/mmu_context.h> #include <asm/mmu_context.h>
@@ -114,8 +115,13 @@ void interrupt_end(void)
{ {
if (need_resched()) if (need_resched())
schedule(); schedule();
if (test_tsk_thread_flag(current, TIF_SIGPENDING)) if (test_thread_flag(TIF_SIGPENDING))
do_signal(); do_signal();
if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
tracehook_notify_resume(&current->thread.regs);
if (current->replacement_session_keyring)
key_replace_session_keyring();
}
} }
void exit_thread(void) void exit_thread(void)