79e6b0e0f6
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>. This patch proposes to then include <zephyr/kernel.h> instead of <zephyr/zephyr.h> since it is more clear that you are including the Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a catch-all header that may be confusing. Most applications need to include a bunch of other things to compile, e.g. driver headers or subsystem headers like BT, logging, etc. The idea of a catch-all header in Zephyr is probably not feasible anyway. Reason is that Zephyr is not a library, like it could be for example `libpython`. Zephyr provides many utilities nowadays: a kernel, drivers, subsystems, etc and things will likely grow. A catch-all header would be massive, difficult to keep up-to-date. It is also likely that an application will only build a small subset. Note that subsystem-level headers may use a catch-all approach to make things easier, though. NOTE: This patch is **NOT** removing the header, just removing its usage in-tree. I'd advocate for its deprecation (add a #warning on it), but I understand many people will have concerns. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
/*
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* Copyright (c) 2020 BayLibre, SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <stdio.h>
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/*
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* 0xC00 is CSR cycle
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* 0xC02 is CSR instret
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*/
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void user_thread_function(void *p1, void *p2, void *p3)
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{
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register unsigned long cycle_before, cycle_count;
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register unsigned long inst_before, inst_count;
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k_tid_t thread;
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printf("User thread started\n");
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while (1) {
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k_sleep(K_MSEC(2000));
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inst_before = csr_read(0xC02);
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cycle_before = csr_read(0xC00);
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thread = k_current_get();
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cycle_count = csr_read(0xC00);
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inst_count = csr_read(0xC02);
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if (cycle_count > cycle_before) {
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cycle_count -= cycle_before;
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} else {
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cycle_count += 0xFFFFFFFF - cycle_before;
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}
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if (inst_count > inst_before) {
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inst_count -= inst_before;
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} else {
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inst_count += 0xFFFFFFFF - inst_before;
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}
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/* Remove CSR accesses to be more accurate */
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inst_count -= 3;
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printf("User thread(%p):\t\t%8lu cycles\t%8lu instructions\n",
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thread, cycle_count, inst_count);
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}
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}
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