Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
and move common math funtions to math32.h:
div_round_up
div_round_closest
is_power_of_2
roundup_pow_of_two
rounddown_pow_of_two
Signed-off-by: lipengfei28 <lipengfei28@xiaomi.com>
the detailed warning info are:
CC: syslog/vsyslog.c "pthread/pthread_create.c", line 443: warning #1931-D: operand of sizeof is
not a type, variable, or dereferenced pointer expression
ptcb->cmn.timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
^
CC: dirent/lib_closedir.c "sched/sched_profil.c", line 81: warning #1931-D: operand of sizeof is not a
type, variable, or dereferenced pointer expression
wd_start(&prof->timer, PROFTICK, profil_timer_handler, arg);
^
"sched/sched_profil.c", line 142: warning #1931-D: operand of sizeof is not a
type, variable, or dereferenced pointer expression
wd_start(&prof->timer, PROFTICK, profil_timer_handler, (wdparm_t)prof);
^
CC: common/arm_modifyreg8.c "sched/sched_setscheduler.c", line 165: warning #1931-D: operand of sizeof is
not a type, variable, or dereferenced pointer expression
tcb->timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
^
CC: misc/lib_utsname.c "sched/sched_unlock.c", line 275: warning #1931-D: operand of sizeof is not a
type, variable, or dereferenced pointer expression
rtcb->timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
^
"sched/sched_roundrobin.c", line 119: warning #1931-D: operand of sizeof is
not a type, variable, or dereferenced pointer expression
tcb->timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
^
CC: armv7-m/arm_fpuconfig.c cxarm: Error: No files. Try -help.
CC: misc/lib_crc8ccitt.c cxarm: Error: No files. Try -help.
cxarm: Error: No files. Try -help.
CC: getprime_main.c cxarm: Error: No files. Try -help.
cxarm: Error: No files. Try -help.
CC: misc/lib_log2ceil.c cxarm: Error: No files. Try -help.
CC: task/task_start.c "task/task_setup.c", line 423: warning #1931-D: operand of sizeof is not a
type, variable, or dereferenced pointer expression
tcb->timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
^
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
64-by-32-bit divisions are prominent in the NuttX, even on 32-bit
machines. Luckily, many of them use a constant divisor that allows
for a much faster multiplication by the divisor's reciprocal.
The compiler already performs this optimization when compiling a 32-by-32
division with a constant divisor. Unfortunately, on 32-bit machines, gcc
does not optimize 64-by-32 divisions in that case, except for constant
divisors that happen to be a power of 2.
Let's avoid the slow path whenever the divisor is constant by manually
computing the reciprocal ourselves and performing the multiplication
inline. In most cases, this improves performance of 64-by-32 divisions
by about two orders of magnitude compared to the __div64_32() fallback,
especially on architectures lacking a native div instruction.
Signed-off-by: ligd <liguiding1@xiaomi.com>
This adds IS_POWER_OF_2 macro to help catching config errors at
build time.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
