linux-toradex.git/arch/mips/dec/int-handler.S, branch v4.10

MIPS: DEC: Avoid la pseudo-instruction in delay slots

2016-09-29T16:59:49+00:00

When expanding the la or dla pseudo-instruction in a delay slot the GNU
assembler will complain should the pseudo-instruction expand to multiple
actual instructions, since only the first of them will be in the delay
slot leading to the pseudo-instruction being only partially executed if
the branch is taken. Use of PTR_LA in the dec int-handler.S leads to
such warnings:

  arch/mips/dec/int-handler.S: Assembler messages:
  arch/mips/dec/int-handler.S:149: Warning: macro instruction expanded into multiple instructions in a branch delay slot
  arch/mips/dec/int-handler.S:198: Warning: macro instruction expanded into multiple instructions in a branch delay slot

Avoid this by open coding the PTR_LA macros.

Signed-off-by: Ralf Baechle

MIPS: Fix misspellings in comments.

2016-04-03T10:32:09+00:00

Signed-off-by: Adam Buchbinder 
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12617/
Signed-off-by: Ralf Baechle

MIPS: DEC: Implement FPU interrupt counter

2015-04-07T23:10:45+00:00

Implement a cheap way to count FPU interrupts for R2k/R3k DECstation
systems.  Do this manually in handcoded assembly, rather than calling
`kstat_incr_irq_this_cpu' that would require setting up a stack frame
and a lot of redirection.  This is not going to be a problem because the
FPU interrupt is local to the CPU and also there is one CPU only anyway.

So at bootstrap determine the address of the correct location within
`struct irq_desc', and then only refer to it directly in the interrupt
handler.

Signed-off-by: Maciej W. Rozycki 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9713/
Signed-off-by: Ralf Baechle

DEC: Whitespace cleanup

2013-10-29T20:24:44+00:00

Commit 7034228792cc561e79ff8600f02884bd4c80e287 [MIPS: Whitespace
cleanup.] did a lot of good and a little damage.  Revert the damage.

Signed-off-by: Maciej W. Rozycki 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5875/
Signed-off-by: Ralf Baechle

MIPS: Whitespace cleanup.

2013-02-01T09:00:22+00:00

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.

Signed-off-by: Ralf Baechle

MIPS: Eleminate filenames from comments

2009-08-03T16:52:40+00:00

They tend to get not updated when files are moved around or copied and
lack any obvious use.  While at it zap some only too obvious comments and
as per Shinya's suggestion, add a copyright header to extable.c.

Signed-off-by: Ralf Baechle 
Acked-by: Shinya Kuribayashi 
Acked-by: Thadeu Lima de Souza Cascardo

[MIPS] DECstation: Fix irq handling

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

When I post a patch (commit f431baa55abf8adeed0c718b51deacbc151f58f1),
I just tried to not change behavior of existing codes, but it seems
dec/int-handler.S had been broken since its previous commit
937a801576f954bd030d7c4a5a94571710d87c0b.

The caller of plat_irq_dispatch do setup/restore TI_REGS($28), so
dec's plat_irq_dispatch should not do it, and there is no need to
adjust RA.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] do_IRQ cleanup

2006-11-30T01:14:49+00:00

Now we have both function and macro version of do_IRQ() and the former
is used only by DEC and non-preemptive kernel.  This patch makes
everyone use the macro version and removes the function version.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] ret_from_irq adjustment

2006-10-09T22:20:46+00:00

Make sure that RA on top of interrupt stack is an address of ret_from_irq,
so that dump_stack etc. can trace info interrupted context.

Also this patch fixes except_vec_vi_handler and __smtc_ipi_vector which
seems broken.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Complete fixes after removal of pt_regs argument to int handlers.

2006-10-08T01:38:28+00:00

Signed-off-by: Ralf Baechle