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authorBarry Song <barry.song@analog.com>2009-12-08 09:55:37 +0000
committerMike Frysinger <vapier@gentoo.org>2009-12-15 00:16:52 -0500
commitd1be2e485bfb5e3ee3ef5d2131f0151f9a3c4387 (patch)
tree58cb8950840e263f2f1e0dd9d18a5a6df0aa7578 /arch/blackfin/kernel/signal.c
parent88f7c2fb0fa96887c7be8cdb00afb1a6f9d7894e (diff)
Blackfin: add support for TIF_NOTIFY_RESUME
Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel/signal.c')
-rw-r--r--arch/blackfin/kernel/signal.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 9d90c18fab23..e0fd63e9e38a 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -12,6 +12,7 @@
#include <linux/binfmts.h>
#include <linux/freezer.h>
#include <linux/uaccess.h>
+#include <linux/tracehook.h>
#include <asm/cacheflush.h>
#include <asm/ucontext.h>
@@ -332,3 +333,20 @@ asmlinkage void do_signal(struct pt_regs *regs)
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
}
+
+/*
+ * notification of userspace execution resumption
+ */
+asmlinkage void do_notify_resume(struct pt_regs *regs)
+{
+ if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK))
+ do_signal(regs);
+
+ if (test_thread_flag(TIF_NOTIFY_RESUME)) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ if (current->replacement_session_keyring)
+ key_replace_session_keyring();
+ }
+}
+