The system tick count is a 64 bit quantity that gets updated from
interrupt context, meaning that it's dangerously non-atomic and has to
be locked. The core kernel clock code did this right.
But the value was also exposed to the rest of the universe as a global
variable, and virtually nothing else was doing this correctly. Even
in the timer ISRs themselves, the interrupts may be themselves
preempted (most of our architectures support nested interrupts) by
code that wants to set timeouts and inspect system uptime.
Define a z_tick_{get,set}() API, eliminate the old variable, and make
sure everyone uses the right mechanism.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
The total number of loops being executed were taking far too long
to finish executing the test case. This was causing the timer handler
to execute in the middle of the test case. Thereby causing a test case
failure.
Now the number of loops have been reduced and this will make sure the
test case completes.
This change has no effect on the time being calculated by the
benchmark.
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
Few SoCs whose clock speed is very less will cause multiple ticks
to occur for 1 sec of sleep. For such a platform we cant run
the loops for over 5000 because the tick handler will get executed.
Thus rendering the test useless for such platforms. By reducing
the number of iterations we get the required benchmark results.
Fixes: GH-7906
Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types.
Jira: ZEP-2051
Change-Id: I6c676bc6c5e850a8725785554cd535e32067f33e
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add __printf_like attribute to printf style functions in minimal libc to
enable the compiler checking this provides. We fixup the associated
issues that are now found by utilizing these checks.
Change-Id: I74ac0d0345782463d9fb454f7161d6b4af211ba5
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
We ended up having "benchmark" and "benchmarks". This
fixes that.
Change-Id: I7ebc409e002e11f5bc9dc821310dd84f3982b8d4
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
