BMC/Intel-BMC/linux.git/arch/mips/kernel/signal-common.h, branch dev

sched/preempt, MIPS: Properly lock access to the FPU

2015-05-19T06:39:18+00:00

Let's always disable preemption and pagefaults when locking the fpu, so we can be sure that the owner won't change in between. This is a preparation for pagefault_disable() not touching preemption anymore. Reviewed-and-tested-by: Thomas Gleixner Signed-off-by: David Hildenbrand Signed-off-by: Peter Zijlstra (Intel) Cc: David.Laight@ACULAB.COM Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bigeasy@linutronix.de Cc: borntraeger@de.ibm.com Cc: daniel.vetter@intel.com Cc: heiko.carstens@de.ibm.com Cc: herbert@gondor.apana.org.au Cc: hocko@suse.cz Cc: hughd@google.com Cc: mst@redhat.com Cc: paulus@samba.org Cc: ralf@linux-mips.org Cc: schwidefsky@de.ibm.com Cc: yang.shi@windriver.com Link: http://lkml.kernel.org/r/1431359540-32227-15-git-send-email-dahi@linux.vnet.ibm.com Signed-off-by: Ingo Molnar

mips: Use get_signal() signal_setup_done()

2014-08-06T11:03:08+00:00

Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger

most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set

2012-06-01T16:58:51+00:00

Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro

MIPS: Move signal trampolines off of the stack.

2010-04-12T16:26:15+00:00

This is a follow on to the vdso patch. Since all processes now have signal trampolines permanently mapped, we can use those instead of putting the trampoline on the stack and invalidating the corresponding icache across all CPUs. We also get rid of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code. [Ralf: GDB 7.1 which has the necessary modifications to allow backtracing over signal frames will supposedly be released tomorrow. The old signal frame format obsoleted by this patch exists in two variations, for sane processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR. So there was never a GDB which did support backtracing over signal frames on all MIPS systems. This convinved me this series should be applied and pushed upstream as soon as possible.] Signed-off-by: David Daney To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/974/ Signed-off-by: Ralf Baechle

[MIPS] replace remaining FUNCTION occurrences

2008-04-28T16:14:27+00:00

__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Ralf Baechle

[MIPS] Retry {save,restore}_fp_context if failed in atomic context.

2007-04-20T13:58:37+00:00

The save_fp_context()/restore_fp_context() might sleep on accessing user stack and therefore might lose FPU ownership in middle of them. If these function failed due to "in_atomic" test in do_page_fault, touch the sigcontext area in non-atomic context and retry these save/restore operation. This is a replacement of a (broken) fix which was titled "Allow CpU exception in kernel partially". Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Check FCSR for pending interrupts, alternative version

2007-03-17T01:03:25+00:00

Commit 6d6671066a311703bca1b91645bb1e04cc983387 is incomplete and misses non-r4k CPUs. This patch reverts the commit and fixes in other way. o Do FCSR checking in caller of restore_fp_context. o Send SIGFPE if the signal handler set any FPU exception bits. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] signals: make common _BLOCKABLE macro

2007-02-13T22:40:51+00:00

Signed-off-by: Franck Bui-Huu Signed-off-by: Ralf Baechle

[MIPS] signal: Move sigframe definition for native O32/N64 into signal.c

2007-02-13T22:40:50+00:00

Signed-off-by: Ralf Baechle

[MIPS] signal: Move {restore,setup}_sigcontext prototypes to their user