The average number of cpu cycles/ticks spent could be provided per 1024
scheduled tasks by the performance counter. It would be more accurate for
MCPS measurement than the peak number. Even so, the tracing macro will log
both of them to provide more insights.
This is enabled by CONFIG_PERFORMANCE_COUNTERS_RUN_AVERAGE, which depends
on CONFIG_PERFORMANCE_COUNTERS.
Signed-off-by: Pin-chih Lin <johnylin@google.com>
The log context in zephyr is per file or module.
To use zephyr logging api, LOG_MODULE_REGISTER is used
to register a log context, LOG_MODULE_DECLARE is used
to refer to the registered context.
For function in header file, LOG_MODULE_DECLARE should
be used within that function to avoid context collapse,
a condition one source file have multiple context
registered or declared.
Signed-off-by: Chao Song <chao.song@linux.intel.com>
Calculates average and records the maximum execution cycles taken by
each execution round and prints the results out once every 1024 round,
e.g. roughly once per second with a typical 1ms tick configuration. The
output is mimicked from the Zephyr side scheduler output. There is a
Kconfig menu option under debug menu to disable this feature. Currently
the default is on.
Signed-off-by: Jyri Sarha <jyri.sarha@intel.com>
For imx, is_cached() is implemented based on _memmap_cacheattr_reset.
This keeps the attributes for a 512MB region, therefore
we have the following address ranges:
Address range - hex digit
0 - 1FFFFFFF - 0
20000000 - 3FFFFFFF - 1
40000000 - 5FFFFFFF - 2
60000000 - 7FFFFFFF - 3
80000000 - 9FFFFFFF - 4
A0000000 - BFFFFFFF - 5
C0000000 - DFFFFFFF - 6
E0000000 - FFFFFFFF - 7
While testing on i.MX8ULP we discovered that addresses from
(0 – 1FFFFFFF) range where not correctly marked as cacheable,
because the compiler is optimizing the code incorrectly.
With macros, is_cached(address) expands to
(((((uint32_t)(&_memmap_cacheattr_reset_8ulp)) >> \
((((((uintptr_t)((void *)address) >> 29) & 0x7)) << 2))) \
& 0xF) == 1)
When using _memmap_cacheattr_reset_8ulp = 0x22222221
and address = 0x1A801000 is_cached(0x1A801000)
should be true, but instead is false.
We want to avoid this buggy compiler optimization.
So we replaced the macros from cache.h with functions.
To make this generic, I created a cache_attr.c file in
src/arch/xtensa/drivers/ and a config option
- COMPILER_WORKAROUND_CACHE_ATTR, which must be selected
if the workaround is needed.
Also, we replaced the call to glb_addr_attr() from glb_is_cached()
with a function pointer that is initialized in
src/arch/xtensa/drivers/cache_attr.c.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
When the SOF Kconfig is included in other projects, the main menu should
not be that of SOF, rather it should be of the project including SOF.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Pin-chih Lin