Do not use the unavailable block count as the erased blocks starvation
threshold. Use instead the block count of the largest segment. This
improves the starvation resolution gain of available blocks.
The compaction process needs erased blocks. It is only possible to
erase an entire segment. Thus in order to make a progress we always
need enough erased blocks to empty a used or available segment which can
be erased in turn. A (possibly the worst case) lower bound of erased
blocks is the block count of the largest segment. The number of
unavailable blocks specified by the configuration will be used to
determine the erase blocks starvation situation. The number of
unavailable blocks must be greater than or equal to the number of blocks
in the largest segment.
In case rtems_bdbuf_read() returns an error status, the block device
buffer pointer will be set to NULL. In RFS the chain node of the block
device buffer will be used for RFS purposes. We must not do this after
an erroneous read.
PR 2015/bsps
Since the configuration struct is always present one can let
DATA initialize it to reduce footprint, at the same time it
is made weak to let the user able to configure the SHM driver
without editing the driver code.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
"medit" overran the argument list, choking on the NULL pointer
following the last argument.
Note that "medit" still only does byte-sized accesses, which limits
its usefulness on most systems.
Author: Werner Almesberger <werner@almesberger.net>
Signed-off-by: Sebastien Bourdeauducq <sebastien@milkymist.org>
* libmisc/shell/main_mdump.c: Reworked to fix bugs in handling of the
length argument and to provide an "ldump" command. This file now also
supports the "wdump" command. In addition, an RTEMS API function called
rtems_mdump() is provided to allow easy dumping from application code.
* libmisc/shell/main_mwdump.c: Obsolete file.
* libmisc/Makefile.am: Removed main_mwdump.c
* libmisc/shell/shellconfig.h: Added "ldump" command.
* shell/memory.t: Added documentation for the "ldump" command
Signed-off-by: Ric Claus <claus@SLAC.Stanford.edu>
* libmisc/shell/main_mdump.c: Reworked to fix bugs in handling of the
length argument and to provide an "ldump" command. This file now also
supports the "wdump" command. In addition, an RTEMS API function called
rtems_mdump() is provided to allow easy dumping from application code.
* libmisc/shell/main_mwdump.c: Obsolete file.
* libmisc/Makefile.am: Removed main_mwdump.c
* libmisc/shell/shellconfig.h: Added "ldump" command.
* shell/memory.t: Added documentation for the "ldump" command
Signed-off-by: Ric Claus <claus@SLAC.Stanford.edu>
* console/console.c: char_ready() was never returning true so console
never processed input data
* console/console.c: added printk() support to default device
* include/bsp.h: Added #define for MOT_162BUG_VEC_ADDRESS
* startup/bspclean.c: Modified to use MOT_162BUG_VEC_ADDRESS
* startup/bspstart.c: Modified to use MOT_162BUG_VEC_ADDRESS
* make/custom/mvme162.cfg: Modified to use "RTEMS_CPU_MODEL=68lc040"
and "CPU_CFLAGS = -mcpu=68040 -msoft-float" so BSP will always
work with all board variations.
* README: Added notes on user required configuration changes and
information about board models and variants
* README.models: New file that contains a detailed list of MVME162
models and variants.
Signed-off-by: Vic Hoover <victor.hoover.ctr@navy.mil>
GRETH driver updated, 10-15% performance improvements for GBIT MAC,
unnecessary RX interrupts not taken which under heavy load saves approx.
1500 interrupts/s, one task removed saving about 5kb memory and 1 bug
solved.
BUG: RX interrupt was enabled before the RX-daemon was created which could
result in a faulty call to rtems_event_send.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Deadlock may arise when the EDCL bug link is used to tunnel
console output over Ethernet, when Ethernet is down one should
avoid using console (only during debugging of LEON targets)
Author: Marko Isomaki <marko@gaisler.com>
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
PR 2010/bsps
The previous code only checked if d-cache snooping was implemented,
however snooping may be available but not enabled which may lead
to driver bugs.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
2009/bsps
All LEON3/4 systems have a CPU-id, if on a single-CPU system the
ID is always zero. On a multicore system it ranges from 0 to 15.
The CPU index should always by updated even in a non-MP RTEMS OS
since the CPU running RTEMS may not always be CPU0. For example
when RTEMS runs on CPU1 and Linux on CPU0 in a mixed ASMP system.
The old code executed within the IRQ controller initialization code
makes no sense since the ASR register is a CPU register, it has
nothing to do with AMBA initialization either.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
The SHM code always wakes one CPU more that configured, however
this has never been a problem since RTEMS will be running on all CPUs
or only two cores were available.
PR 2006/bsps
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
PR 1968/filesystem
* libfs/src/rfs/rtems-rfs-file.c: Fix to the seek bug where a seek
to 0 after reading the end of the file did not point to the
correct block.
* libfs/src/rfs/rtems-rfs-rtems.h,
libfs/src/rfs/rtems-rfs-trace.c: Fix the trace flags. Used to fix
the bug.
PR 1948/filesystem
* libfs/src/rfs/rtems-rfs-file-system.c,
libfs/src/rfs/rtems-rfs-file-system.h,
libfs/src/rfs/rtems-rfs-format.c, libfs/src/rfs/rtems-rfs-rtems.c:
Add support for mount passing an ASCIIZ string containing
configuration options.
* libblock/src/bdbuf.c: Fix state labels in trace output.
