mirror of
https://github.com/mmueller41/genode.git
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libports: Ported libpfm4 to Genode.
This commit is contained in:
Michael Mueller
68
repos/mml/run/libpfm_test.run
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68
repos/mml/run/libpfm_test.run
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set build_components {
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core init timer app/libpfm_test
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}
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source ${genode_dir}/repos/base/run/platform_drv.inc
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append_platform_drv_build_components
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build $build_components
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create_boot_directory
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set config {
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<config>
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<parent-provides>
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<service name="LOG"/>
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<service name="LOG"/>
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<service name="PD"/>
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<service name="CPU"/>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="CAP"/>
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<service name="RM"/>
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<service name="SIGNAL"/>
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<service name="TOPO"/>
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</parent-provides>
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<default-route>
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<any-service><parent/><any-child/></any-service>
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</default-route>
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<default caps="200"/>
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<start name="timer">
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<resource name="RAM" quantum="1M"/>
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<provides><service name="Timer"/></provides>
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<route>
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<any-service><parent/><any-child/></any-service>
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</route>
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</start>
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}
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append config {
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<start name="libpfm_test">
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<resource name="RAM" quantum="10M"/>
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<config>
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<vfs> <dir name="dev"> <log/> <inline name="rtc">2022-07-20 14:30</inline> </dir> </vfs>
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<libc stdout="/dev/log" stderr="/dev/log" rtc="/dev/rtc"/>
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</config>
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<route>
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<service name="Timer"><child name="timer"/></service>
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<any-service><parent/><any-child/></any-service>
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</route>
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</start>
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</config>
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}
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install_config $config
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set boot_modules {
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core init timer vfs.lib.so ld.lib.so posix.lib.so libc.lib.so libm.lib.so stdcxx.lib.so libpfm_test
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}
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append_platform_drv_boot_modules
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build_boot_image $boot_modules
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append qemu_args "-nographic "
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run_genode_until forever
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174
repos/mml/src/app/libpfm_test/check_events.c
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174
repos/mml/src/app/libpfm_test/check_events.c
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@@ -0,0 +1,174 @@
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/*
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* check_events.c - show event encoding
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*
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* Copyright (c) 2009 Google, Inc
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* Contributed by Stephane Eranian <eranian@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* This file is part of libpfm, a performance monitoring support library for
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* applications on Linux.
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*/
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#include <sys/types.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <perfmon/err.h>
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#include <perfmon/pfmlib.h>
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int pmu_is_present(pfm_pmu_t p)
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{
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pfm_pmu_info_t pinfo;
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int ret;
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memset(&pinfo, 0, sizeof(pinfo));
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ret = pfm_get_pmu_info(p, &pinfo);
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return ret == PFM_SUCCESS ? pinfo.is_present : 0;
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}
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int main(int argc, const char **argv)
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{
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pfm_pmu_info_t pinfo;
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pfm_pmu_encode_arg_t e;
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const char *arg[3];
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const char **p;
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char *fqstr;
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pfm_event_info_t info;
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int j, ret;
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pfm_pmu_t i;
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int total_supported_events = 0;
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int total_available_events = 0;
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unsigned long low, high, msr;
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msr = 0xc0010200;
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asm volatile("rdmsr"
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: "=a"(low), "=d"(high)
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: "c"(msr)); /*
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* Initialize pfm library (required before we can use it)
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*/
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ret = pfm_initialize();
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if (ret != PFM_SUCCESS)
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errx(1, "cannot initialize library: %s\n", pfm_strerror(ret));
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memset(&pinfo, 0, sizeof(pinfo));
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memset(&info, 0, sizeof(info));
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printf("Supported PMU models:\n");
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for (i = PFM_PMU_NONE; i < PFM_PMU_MAX; i++)
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{
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ret = pfm_get_pmu_info(i, &pinfo);
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if (ret != PFM_SUCCESS)
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continue;
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printf("\t[%d, %s, \"%s\"]\n", i, pinfo.name, pinfo.desc);
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}
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printf("Detected PMU models:\n");
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for (i = PFM_PMU_NONE; i < PFM_PMU_MAX; i++)
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{
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ret = pfm_get_pmu_info(i, &pinfo);
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if (ret != PFM_SUCCESS)
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continue;
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if (pinfo.is_present)
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{
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printf("\t[%d, %s, \"%s\"]\n", i, pinfo.name, pinfo.desc);
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total_supported_events += pinfo.nevents;
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}
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total_available_events += pinfo.nevents;
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}
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printf("Total events: %d available, %d supported\n", total_available_events, total_supported_events);
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/*
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* be nice to user!
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*/
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if (argc < 2 && pmu_is_present(PFM_PMU_PERF_EVENT))
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{
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arg[0] = "PERF_COUNT_HW_CPU_CYCLES";
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arg[1] = "PERF_COUNT_HW_INSTRUCTIONS";
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arg[2] = NULL;
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p = arg;
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}
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else
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{
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p = argv + 1;
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}
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if (!*p)
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errx(1, "you must pass at least one event");
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memset(&e, 0, sizeof(e));
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while (*p)
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{
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/*
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* extract raw event encoding
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*
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* For perf_event encoding, use
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* #include <perfmon/pfmlib_perf_event.h>
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* and the function:
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* pfm_get_perf_event_encoding()
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*/
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fqstr = NULL;
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e.fstr = &fqstr;
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ret = pfm_get_os_event_encoding(*p, PFM_PLM0 | PFM_PLM3, PFM_OS_NONE, &e);
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if (ret != PFM_SUCCESS)
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{
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/*
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* codes is too small for this event
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* free and let the library resize
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*/
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if (ret == PFM_ERR_TOOSMALL)
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{
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free(e.codes);
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e.codes = NULL;
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e.count = 0;
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free(fqstr);
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continue;
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}
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if (ret == PFM_ERR_NOTFOUND && strstr(*p, "::"))
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errx(1, "%s: try setting LIBPFM_ENCODE_INACTIVE=1", pfm_strerror(ret));
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errx(1, "cannot encode event %s: %s", *p, pfm_strerror(ret));
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}
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ret = pfm_get_event_info(e.idx, PFM_OS_NONE, &info);
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if (ret != PFM_SUCCESS)
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errx(1, "cannot get event info: %s", pfm_strerror(ret));
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ret = pfm_get_pmu_info(info.pmu, &pinfo);
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if (ret != PFM_SUCCESS)
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errx(1, "cannot get PMU info: %s", pfm_strerror(ret));
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printf("Requested Event: %s\n", *p);
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printf("Actual Event: %s\n", fqstr);
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printf("PMU : %s\n", pinfo.desc);
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printf("IDX : %d\n", e.idx);
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printf("Codes :");
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for (j = 0; j < e.count; j++)
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printf(" 0x%" PRIx64, e.codes[j]);
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putchar('\n');
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free(fqstr);
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p++;
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}
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if (e.codes)
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free(e.codes);
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return 0;
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}
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1020
repos/mml/src/app/libpfm_test/showevtinfo.c
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1020
repos/mml/src/app/libpfm_test/showevtinfo.c
Normal file
File diff suppressed because it is too large
Load Diff
5
repos/mml/src/app/libpfm_test/target.mk
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5
repos/mml/src/app/libpfm_test/target.mk
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@@ -0,0 +1,5 @@
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TARGET = libpfm_test
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SRC_CC = check_events.c
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LIBS += base posix libm libc stdcxx libpfm4
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CC_OPT += -Wno-error -Wno-permissive -fpermissive
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@@ -1,4 +1,4 @@
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TARGET = thread_test
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SRC_CC = thread_test.cc
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LIBS += base stdcxx
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LIBS += base libc stdcxx
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CXXFLAGS += -Wno-error
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