/* -*- linux-c -*- * Perf Functions * Copyright (C) 2006 Red Hat Inc. * * This file is part of systemtap, and is free software. You can * redistribute it and/or modify it under the terms of the GNU General * Public License (GPL); either version 2, or (at your option) any * later version. */ #ifndef _PERF_C_ #define _PERF_C_ #include #include "perf.h" /** @file perf.c * @brief Implements performance monitoring hardware support */ /* TODO fix so this works on SMP machines * Need to do context load, register setup, and start on each processor * * Similarly need to stop and unload on each processor */ /* TODO make this work with sampling. There needs to be a help thread * handling the sampling. */ static int _stp_pfm_register_setup(void *desc, struct pfarg_pmc pmc[], int pmc_count, struct pfarg_pmd pmd[], int pmd_count) { int err = 0; if (desc == 0) return -EINVAL; err = pfmk_write_pmcs(desc, pmc, pmc_count); if (err) return err; err = pfmk_write_pmds(desc, pmd, pmd_count); return err; } static struct completion c; static struct pfarg_load load_args; static struct pfarg_start start_args; /** Sets up the performance monitoring hardware. * The locations desc and context point to are modified as * side-effects of the setup. desc is a unique pointer used * by the various routines. * @param desc pointer to void *, handle to describe perfmon config * @param context pointer to context information * @param pmc, pointer to array describing control register setup * @param pmc_count, number of entries in pmc * @param pmd, pointer to array describing data register setup * @param pmd_count, number of entries in pmd * @returns an int, 0 if no errors encountered during setup */ static int _stp_perfmon_setup(void **desc, struct pfarg_ctx *context, struct pfarg_pmc pmc[], int pmc_count, struct pfarg_pmd pmd[], int pmd_count) { int err = 0; /* create a context */ err = pfmk_create_context(context, NULL, 0, &c, desc, NULL); if (err) goto cleanup; /* set up the counters */ err = _stp_pfm_register_setup(*desc, pmc, pmc_count, pmd, pmd_count); if (err) goto cleanup2; /* start measuring */ err = pfmk_load_context(*desc, &load_args); if (err) { printk("pfmk_load_context error\n"); goto cleanup2; } err = pfmk_start(*desc, &start_args); if (err) { printk("pfmk_start error\n"); goto cleanup3; } return err; cleanup3: pfmk_unload_context(*desc); cleanup2: pfmk_close(*desc); cleanup: *desc=NULL; return err; } /** Shuts down the performance monitoring hardware. * @param desc unique pointer to describe configuration * @returns an int, 0 if no errors encountered during shutdown */ static int _stp_perfmon_shutdown(void *desc) { int err=0; if (desc == 0) return -EINVAL; /* stop the counters */ err=pfmk_stop(desc); if (err) return err; err=pfmk_unload_context(desc); if (err) return err; err=pfmk_close(desc); return err; } /** Reads the performance counter * @param desc unique pointer to describe configuration * @returns an int64, raw value of counter */ static int64_t _stp_perfmon_read(void *desc, int counter) { struct pfarg_pmd storage; storage.reg_set = 0; storage.reg_num = counter; if ( desc != NULL) { if (pfmk_read_pmds(desc, &storage, 1)) printk( "pfm_read_pmds error\n"); } return storage.reg_value; } #endif /* _PERF_C_ */ spinner_v2'>datetime_on_spinner_v2 This repo is intended for SWT patches that will help to migrate from GTK+ 2 to GTK+ 3Anatoly Spektor
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/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation and others.