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authorJeff Dike <jdike@addtoit.com>2007-10-16 01:27:27 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:08 -0700
commit61b63c556c0877ee6d3832ee641bc427ff4d94d6 (patch)
treee35a047a7b11f349d3d68ac18639bc33801ec001 /arch/um/os-Linux/signal.c
parent5f734614fc6218db352d26571ab4d1604620199c (diff)
downloadop-kernel-dev-61b63c556c0877ee6d3832ee641bc427ff4d94d6.zip
op-kernel-dev-61b63c556c0877ee6d3832ee641bc427ff4d94d6.tar.gz
uml: eliminate SIGALRM
Now that ITIMER_REAL is no longer used, there is no need for any use of SIGALRM whatsoever. This patch removes all mention of it. In addition, real_alarm_handler took a signal argument which is now always SIGVTALRM. So, that is gone. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/signal.c')
-rw-r--r--arch/um/os-Linux/signal.c28
1 files changed, 7 insertions, 21 deletions
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index fbad174..e9800b0 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -15,8 +15,7 @@
#include "user.h"
/*
- * These are the asynchronous signals. SIGVTALRM and SIGARLM are handled
- * together under SIGVTALRM_BIT. SIGPROF is excluded because we want to
+ * These are the asynchronous signals. SIGPROF is excluded because we want to
* be able to profile all of UML, not just the non-critical sections. If
* profiling is not thread-safe, then that is not my problem. We can disable
* profiling when SMP is enabled in that case.
@@ -27,9 +26,6 @@
#define SIGVTALRM_BIT 1
#define SIGVTALRM_MASK (1 << SIGVTALRM_BIT)
-#define SIGALRM_BIT 2
-#define SIGALRM_MASK (1 << SIGALRM_BIT)
-
/*
* These are used by both the signal handlers and
* block/unblock_signals. I don't want modifications cached in a
@@ -55,7 +51,7 @@ void sig_handler(int sig, struct sigcontext *sc)
set_signals(enabled);
}
-static void real_alarm_handler(int sig, struct sigcontext *sc)
+static void real_alarm_handler(struct sigcontext *sc)
{
struct uml_pt_regs regs;
@@ -63,7 +59,7 @@ static void real_alarm_handler(int sig, struct sigcontext *sc)
copy_sc(&regs, sc);
regs.is_user = 0;
unblock_signals();
- timer_handler(sig, &regs);
+ timer_handler(SIGVTALRM, &regs);
}
void alarm_handler(int sig, struct sigcontext *sc)
@@ -72,27 +68,20 @@ void alarm_handler(int sig, struct sigcontext *sc)
enabled = signals_enabled;
if (!signals_enabled) {
- if (sig == SIGVTALRM)
- pending |= SIGVTALRM_MASK;
- else pending |= SIGALRM_MASK;
-
+ pending |= SIGVTALRM_MASK;
return;
}
block_signals();
- real_alarm_handler(sig, sc);
+ real_alarm_handler(sc);
set_signals(enabled);
}
void timer_init(void)
{
set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
- SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
- SIGALRM, -1);
- set_handler(SIGALRM, (__sighandler_t) alarm_handler,
- SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH,
- SIGALRM, -1);
+ SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, -1);
}
void set_sigstack(void *sig_stack, int size)
@@ -267,11 +256,8 @@ void unblock_signals(void)
if (save_pending & SIGIO_MASK)
sig_handler_common_skas(SIGIO, NULL);
- if (save_pending & SIGALRM_MASK)
- real_alarm_handler(SIGALRM, NULL);
-
if (save_pending & SIGVTALRM_MASK)
- real_alarm_handler(SIGVTALRM, NULL);
+ real_alarm_handler(NULL);
}
}
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