Re: [PATCH] powerpc: Fix compile errors found by new ppc64e_defconfig

On Mon, 2009-10-19 at 10:58 +1100, Michael Ellerman wrote: > > if (bus->self) { > > +#ifdef CONFIG_PPC_STD_MMU_64 > > struct resource *res = bus->resource[0]; > > +#endif > > > > pr_debug("IO unmapping for PCI-PCI bridge %s\n", > > pci_name(bus->s

Re: Mixing hard and soft floating point?

On Sat, 2009-10-17 at 21:34 +0200, Wolfgang Denk wrote: > Dear Joakim Tjernlund, > > OK, but then you don't mix some libs/apps with soft and other > > apps/libs with hard FP? > > No, we never tried that. Sounds scary to me. And dangerous. Hard-float and soft-float are ABI incompatible, so you ca

Re: [PATCH 3/3] powerpc perf_event: Add alignment-faults and emulation-faults software events

Hi, > > +#define PPC_WARN_ALIGNMENT(type, regs) \ > > + do {\ > > + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, \ > > + 1, 0, regs, regs->dar);

Re: [PATCH] powerpc: Fix compile errors found by new ppc64e_defconfig

On Fri, 2009-10-16 at 12:05 -0500, Kumar Gala wrote: > Fix the following 3 issues: > > arch/powerpc/kernel/process.c: In function 'arch_randomize_brk': > arch/powerpc/kernel/process.c:1183: error: 'mmu_highuser_ssize' undeclared > (first use in this function) > arch/powerpc/kernel/process.c:1183:

Re: [PATCH 3/3] powerpc perf_event: Add alignment-faults and emulation-faults software events

On Sun, 2009-10-18 at 22:13 +1100, Anton Blanchard wrote: > Hook up the alignment-faults and emulation-faults events for powerpc. > > Signed-off-by: Anton Blanchard > --- > > Index: linux.trees.git/arch/powerpc/include/asm/emulated_ops.h >

Re: Mixing hard and soft floating point?

Dear Joakim Tjernlund, In message you wrote: > > > If the application is really using FP instructions a lot, then there > > is a huge difference between using soft-float and MATH_EMU; I > > remember test cases where soft-float was faster by factors of > > 500...1000. > > Ouch, I had no idea th

Re: [PATCH 2/3] powerpc: Create PPC_WARN_ALIGNMENT to match PPC_WARN_EMULATED

Hi Anton, On Sun, 18 Oct 2009 22:11:26 +1100 Anton Blanchard wrote: > > @@ -66,8 +66,12 @@ extern void ppc_warn_emulated_print(cons > > #else /* !CONFIG_PPC_EMULATED_STATS */ > > -#define PPC_WARN_EMULATED(type) do { } while (0) > +#define __PPC_WARN_EMULATED(type)do { } while (0) >

Re: Mixing hard and soft floating point?

Wolfgang Denk wrote on 17/10/2009 21:34:54: > > Dear Joakim Tjernlund, > > In message 00651...@transmode.se> you wrote: > > > > > Recompile and relink it with soft-fp as well. Or ask the provider to > > > do that. > > > > That is what I am trying do/find out. The supplier claims that > > it shoul

[PATCH 2/3] powerpc: perf_event: Cleanup output by adding symbols

Add some dummy symbols for the branches at 0xf00, 0xf20 and 0xf40, otherwise hits end up in trap_0e which is confusing to the user. Signed-off-by: Anton Blanchard --- Index: linux.trees.git/arch/powerpc/kernel/exceptions-64s.S ===

[PATCH 1/3] powerpc: perf_event: Cleanup copy_page output by hiding setup symbol

A lot of hits in "setup" doesn't make much sense, so hide this symbol and allow all the hits to end up in copy_4k_page. Signed-off-by: Anton Blanchard --- Index: linux.trees.git/arch/powerpc/lib/copypage_64.S === --- linux.trees.gi

[PATCH 3/3] powerpc: perf_event: Hide iseries_check_pending_irqs

If CONFIG_PPC_ISERIES isn't defined we end up with iseries_check_pending_irqs and do_work at the same address. perf ends up picking iseries_check_pending_irqs which creates confusing backtraces. Hide it. Signed-off-by: Anton Blanchard -- Index: linux.trees.git/arch/powerpc/kernel/entry_64.S ===

[PATCH 1/3] perf_event: Add alignment-faults and emulation-faults software events

Add two more sw events that are common to many cpus. Alignment faults: When a load or store is not aligned properly. Emulation faults: When an instruction is emulated in software. Both cause a very significant slowdown (100x or worse), so identifying and fixing them is very important. Signed-o

[PATCH 2/3] powerpc: Create PPC_WARN_ALIGNMENT to match PPC_WARN_EMULATED

perf_event wants a separate event for alignment and emulation faults, so create another PPC_WARN_* define. This will make it easy to hook in perf_event at one spot. We pass in regs which will be required for these events. Signed-off-by: Anton Blanchard --- Index: linux.trees.git/arch/powerpc/i

[PATCH 3/3] powerpc perf_event: Add alignment-faults and emulation-faults software events

Hook up the alignment-faults and emulation-faults events for powerpc. Signed-off-by: Anton Blanchard --- Index: linux.trees.git/arch/powerpc/include/asm/emulated_ops.h === --- linux.trees.git.orig/arch/powerpc/include/asm/emulated_

Re: [PATCH] powerpc: tracing: Add powerpc tracepoints for interrupt entry and exit

Hi Ben, > Breaks 6xx_defconfig: Yuck. Since the CREATE_TRACE_POINTS stuff appears to need a non trivial number of includes it might be best just to fold it into one of the tracepoint call sites like this. -- This patch adds powerpc specific tracepoints for interrupt entry and exit. While we a

Re: UBIFS problem on MPC8536DS

Hi, Scott Scott Wood wrote: On Fri, Oct 16, 2009 at 07:01:43AM +0200, Felix Radensky wrote: Thanks for confirmation. So the real problem is eLBC ? What happens if I access other devices on eLBC (e.g. FPGA) simultaneously with NAND or NOR ? AFAICT, the problem is NAND being accessed simultaneo