From 5477d30e841e0f707fd2daddc8cb6949858476ee Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 24 Aug 2005 14:18:53 +1000 Subject: [PATCH] ppc64: Export machine_power_off for therm_pm72 module This patch puts back the export of machine_power_off() that was removed by some janitor as it's used for emergency shutdown by the G5 thermal control driver. Wether that driver should use kernel_power_off() instead is debatable and a post-2.6.13 decision. In the meantime, please commit that patch that fixes the driver for now. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Linus Torvalds --- arch/ppc64/kernel/setup.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/ppc64/kernel') diff --git a/arch/ppc64/kernel/setup.c b/arch/ppc64/kernel/setup.c index 687e8559520..e9c24d2dbd9 100644 --- a/arch/ppc64/kernel/setup.c +++ b/arch/ppc64/kernel/setup.c @@ -706,6 +706,8 @@ void machine_power_off(void) local_irq_disable(); while (1) ; } +/* Used by the G5 thermal driver */ +EXPORT_SYMBOL_GPL(machine_power_off); void machine_halt(void) { -- cgit v1.2.3 From 69be8f189653cd81aae5a74e26615b12871bb72e Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 29 Aug 2005 11:44:09 -0400 Subject: [PATCH] convert signal handling of NODEFER to act like other Unix boxes. It has been reported that the way Linux handles NODEFER for signals is not consistent with the way other Unix boxes handle it. I've written a program to test the behavior of how this flag affects signals and had several reports from people who ran this on various Unix boxes, confirming that Linux seems to be unique on the way this is handled. The way NODEFER affects signals on other Unix boxes is as follows: 1) If NODEFER is set, other signals in sa_mask are still blocked. 2) If NODEFER is set and the signal is in sa_mask, then the signal is still blocked. (Note: this is the behavior of all tested but Linux _and_ NetBSD 2.0 *). The way NODEFER affects signals on Linux: 1) If NODEFER is set, other signals are _not_ blocked regardless of sa_mask (Even NetBSD doesn't do this). 2) If NODEFER is set and the signal is in sa_mask, then the signal being handled is not blocked. The patch converts signal handling in all current Linux architectures to the way most Unix boxes work. Unix boxes that were tested: DU4, AIX 5.2, Irix 6.5, NetBSD 2.0, SFU 3.5 on WinXP, AIX 5.3, Mac OSX, and of course Linux 2.6.13-rcX. * NetBSD was the only other Unix to behave like Linux on point #2. The main concern was brought up by point #1 which even NetBSD isn't like Linux. So with this patch, we leave NetBSD as the lonely one that behaves differently here with #2. Signed-off-by: Linus Torvalds --- arch/ppc64/kernel/signal.c | 5 +++-- arch/ppc64/kernel/signal32.c | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'arch/ppc64/kernel') diff --git a/arch/ppc64/kernel/signal.c b/arch/ppc64/kernel/signal.c index bf782276984..49a79a55c32 100644 --- a/arch/ppc64/kernel/signal.c +++ b/arch/ppc64/kernel/signal.c @@ -481,10 +481,11 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka, /* Set up Signal Frame */ ret = setup_rt_frame(sig, ka, info, oldset, regs); - if (ret && !(ka->sa.sa_flags & SA_NODEFER)) { + if (ret) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); - sigaddset(¤t->blocked,sig); + if (!(ka->sa.sa_flags & SA_NODEFER)) + sigaddset(¤t->blocked,sig); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); } diff --git a/arch/ppc64/kernel/signal32.c b/arch/ppc64/kernel/signal32.c index 3c2fa5c284c..46f4d6cc7fc 100644 --- a/arch/ppc64/kernel/signal32.c +++ b/arch/ppc64/kernel/signal32.c @@ -976,11 +976,12 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs) else ret = handle_signal32(signr, &ka, &info, oldset, regs, newsp); - if (ret && !(ka.sa.sa_flags & SA_NODEFER)) { + if (ret) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka.sa.sa_mask); - sigaddset(¤t->blocked, signr); + if (!(ka.sa.sa_flags & SA_NODEFER)) + sigaddset(¤t->blocked, signr); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); } -- cgit v1.2.3