| /** |
| * @file daemon/opd_ibs.c |
| * AMD Family10h Instruction Based Sampling (IBS) handling. |
| * |
| * @remark Copyright 2007-2010 OProfile authors |
| * @remark Read the file COPYING |
| * |
| * @author Jason Yeh <jason.yeh@amd.com> |
| * @author Paul Drongowski <paul.drongowski@amd.com> |
| * @author Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> |
| * Copyright (c) 2008 Advanced Micro Devices, Inc. |
| */ |
| |
| #include "op_hw_config.h" |
| #include "op_events.h" |
| #include "op_string.h" |
| #include "op_hw_specific.h" |
| #include "op_libiberty.h" |
| #include "opd_printf.h" |
| #include "opd_trans.h" |
| #include "opd_events.h" |
| #include "opd_kernel.h" |
| #include "opd_anon.h" |
| #include "opd_sfile.h" |
| #include "opd_interface.h" |
| #include "opd_mangling.h" |
| #include "opd_extended.h" |
| #include "opd_ibs.h" |
| #include "opd_ibs_trans.h" |
| #include "opd_ibs_macro.h" |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <limits.h> |
| |
| extern op_cpu cpu_type; |
| extern int no_event_ok; |
| extern int sfile_equal(struct sfile const * sf, struct sfile const * sf2); |
| extern void sfile_dup(struct sfile * to, struct sfile * from); |
| extern char * session_dir; |
| |
| /* IBS Select Counters */ |
| static unsigned int ibs_selected_size; |
| |
| /* These flags store the IBS-derived events selection. */ |
| static unsigned int ibs_fetch_selected_flag; |
| static unsigned int ibs_op_selected_flag; |
| static unsigned int ibs_op_ls_selected_flag; |
| static unsigned int ibs_op_nb_selected_flag; |
| |
| /* IBS Statistics */ |
| static unsigned long ibs_fetch_sample_stats; |
| static unsigned long ibs_fetch_incomplete_stats; |
| static unsigned long ibs_op_sample_stats; |
| static unsigned long ibs_op_incomplete_stats; |
| static unsigned long ibs_derived_event_stats; |
| |
| /* |
| * IBS Virtual Counter |
| */ |
| struct opd_event ibs_vc[OP_MAX_IBS_COUNTERS]; |
| |
| /* IBS Virtual Counter Index(VCI) Map*/ |
| unsigned int ibs_vci_map[OP_MAX_IBS_COUNTERS]; |
| |
| /* CPUID information */ |
| unsigned int ibs_family; |
| unsigned int ibs_model; |
| unsigned int ibs_stepping; |
| |
| /* IBS Extended MSRs */ |
| static unsigned long ibs_bta_enabled; |
| |
| /* IBS log files */ |
| FILE * memaccess_log; |
| FILE * bta_log; |
| |
| /** |
| * This function converts IBS fetch event flags and values into |
| * derived events. If the tagged (sampled) fetched caused a derived |
| * event, the derived event is tallied. |
| */ |
| static void opd_log_ibs_fetch(struct transient * trans) |
| { |
| struct ibs_fetch_sample * trans_fetch = ((struct ibs_sample*)(trans->ext))->fetch; |
| if (!trans_fetch) |
| return; |
| |
| trans_ibs_fetch(trans, ibs_fetch_selected_flag); |
| } |
| |
| |
| /** |
| * This function translates the IBS op event flags and values into |
| * IBS op derived events. If an op derived event occured, it's tallied. |
| */ |
| static void opd_log_ibs_op(struct transient * trans) |
| { |
| struct ibs_op_sample * trans_op = ((struct ibs_sample*)(trans->ext))->op; |
| if (!trans_op) |
| return; |
| |
| trans_ibs_op_mask_reserved(ibs_family, trans); |
| |
| if (trans_ibs_op_rip_invalid(trans) != 0) |
| return; |
| |
| trans_ibs_op(trans, ibs_op_selected_flag); |
| trans_ibs_op_ls(trans, ibs_op_ls_selected_flag); |
| trans_ibs_op_nb(trans, ibs_op_nb_selected_flag); |
| trans_ibs_op_ls_memaccess(trans); |
| trans_ibs_op_bta(trans); |
| } |
| |
| |
| static void opd_put_ibs_sample(struct transient * trans) |
| { |
| unsigned long long event = 0; |
| struct kernel_image * k_image = NULL; |
| struct ibs_fetch_sample * trans_fetch = ((struct ibs_sample*)(trans->ext))->fetch; |
| |
| if (!enough_remaining(trans, 1)) { |
| trans->remaining = 0; |
| return; |
| } |
| |
| /* IBS can generate samples with invalid dcookie and |
| * in kernel address range. Map such samples to vmlinux |
| * only if the user either specifies a range, or vmlinux. |
| */ |
| if (trans->cookie == INVALID_COOKIE |
| && (k_image = find_kernel_image(trans)) != NULL |
| && (k_image->start != 0 && k_image->end != 0) |
| && trans->in_kernel == 0) |
| trans->in_kernel = 1; |
| |
| if (trans->tracing != TRACING_ON) |
| trans->event = event; |
| |
| /* sfile can change at each sample for kernel */ |
| if (trans->in_kernel != 0) |
| clear_trans_current(trans); |
| |
| if (!trans->in_kernel && trans->cookie == NO_COOKIE) |
| trans->anon = find_anon_mapping(trans); |
| |
| /* get the current sfile if needed */ |
| if (!trans->current) |
| trans->current = sfile_find(trans); |
| |
| /* |
| * can happen if kernel sample falls through the cracks, or if |
| * it's a sample from an anon region we couldn't find |
| */ |
| if (!trans->current) |
| goto out; |
| |
| if (trans_fetch) |
| opd_log_ibs_fetch(trans); |
| else |
| opd_log_ibs_op(trans); |
| out: |
| /* switch to trace mode */ |
| if (trans->tracing == TRACING_START) |
| trans->tracing = TRACING_ON; |
| |
| update_trans_last(trans); |
| } |
| |
| |
| static void get_ibs_bta_status() |
| { |
| FILE * fp = NULL; |
| char buf[PATH_MAX]; |
| |
| /* Default to disable */ |
| ibs_bta_enabled = 0; |
| |
| snprintf(buf, PATH_MAX, "/dev/oprofile/ibs_op/branch_target"); |
| fp = fopen(buf, "r"); |
| if (!fp) |
| return; |
| |
| while (fgets(buf, PATH_MAX, fp) != NULL) |
| ibs_bta_enabled = strtoul(buf, NULL, 10); |
| |
| fclose(fp); |
| } |
| |
| |
| void code_ibs_fetch_sample(struct transient * trans) |
| { |
| struct ibs_fetch_sample * trans_fetch = NULL; |
| |
| if (!enough_remaining(trans, 7)) { |
| verbprintf(vext, "not enough remaining\n"); |
| trans->remaining = 0; |
| ibs_fetch_incomplete_stats++; |
| return; |
| } |
| |
| ibs_fetch_sample_stats++; |
| |
| trans->ext = xmalloc(sizeof(struct ibs_sample)); |
| ((struct ibs_sample*)(trans->ext))->fetch = xmalloc(sizeof(struct ibs_fetch_sample)); |
| trans_fetch = ((struct ibs_sample*)(trans->ext))->fetch; |
| |
| trans_fetch->rip = pop_buffer_value(trans); |
| |
| trans_fetch->ibs_fetch_lin_addr_low = pop_buffer_value(trans); |
| trans_fetch->ibs_fetch_lin_addr_high = pop_buffer_value(trans); |
| |
| trans_fetch->ibs_fetch_ctl_low = pop_buffer_value(trans); |
| trans_fetch->ibs_fetch_ctl_high = pop_buffer_value(trans); |
| trans_fetch->ibs_fetch_phys_addr_low = pop_buffer_value(trans); |
| trans_fetch->ibs_fetch_phys_addr_high = pop_buffer_value(trans); |
| |
| verbprintf(vsamples, |
| "FETCH_X CPU:%ld PID:%ld RIP:%lx CTL_H:%x LAT:%d P_HI:%x P_LO:%x L_HI:%x L_LO:%x\n", |
| trans->cpu, |
| (long)trans->tgid, |
| trans_fetch->rip, |
| (trans_fetch->ibs_fetch_ctl_high >> 16) & 0x3ff, |
| (trans_fetch->ibs_fetch_ctl_high) & 0xffff, |
| trans_fetch->ibs_fetch_phys_addr_high, |
| trans_fetch->ibs_fetch_phys_addr_low, |
| trans_fetch->ibs_fetch_lin_addr_high, |
| trans_fetch->ibs_fetch_lin_addr_low) ; |
| |
| /* Overwrite the trans->pc with the more accurate trans_fetch->rip */ |
| trans->pc = trans_fetch->rip; |
| |
| opd_put_ibs_sample(trans); |
| |
| free(trans_fetch); |
| free(trans->ext); |
| trans->ext = NULL; |
| } |
| |
| |
| static void get_ibs_op_bta_sample(struct transient * trans, |
| struct ibs_op_sample * trans_op) |
| { |
| // Check remaining |
| if (!enough_remaining(trans, 2)) { |
| verbprintf(vext, "not enough remaining\n"); |
| trans->remaining = 0; |
| ibs_op_incomplete_stats++; |
| return; |
| } |
| |
| if (ibs_bta_enabled == 1) { |
| trans_op->ibs_op_brtgt_addr = pop_buffer_value(trans); |
| |
| // Check if branch target address is valid (MSRC001_1035[37] == 1] |
| if ((trans_op->ibs_op_data1_high & (0x00000001 << 5)) == 0) { |
| trans_op->ibs_op_brtgt_addr = 0; |
| } |
| } else { |
| trans_op->ibs_op_brtgt_addr = 0; |
| } |
| } |
| |
| |
| void code_ibs_op_sample(struct transient * trans) |
| { |
| struct ibs_op_sample * trans_op= NULL; |
| |
| if (!enough_remaining(trans, 13)) { |
| verbprintf(vext, "not enough remaining\n"); |
| trans->remaining = 0; |
| ibs_op_incomplete_stats++; |
| return; |
| } |
| |
| ibs_op_sample_stats++; |
| |
| trans->ext = xmalloc(sizeof(struct ibs_sample)); |
| ((struct ibs_sample*)(trans->ext))->op = xmalloc(sizeof(struct ibs_op_sample)); |
| trans_op = ((struct ibs_sample*)(trans->ext))->op; |
| |
| trans_op->rip = pop_buffer_value(trans); |
| |
| trans_op->ibs_op_lin_addr_low = pop_buffer_value(trans); |
| trans_op->ibs_op_lin_addr_high = pop_buffer_value(trans); |
| |
| trans_op->ibs_op_data1_low = pop_buffer_value(trans); |
| trans_op->ibs_op_data1_high = pop_buffer_value(trans); |
| trans_op->ibs_op_data2_low = pop_buffer_value(trans); |
| trans_op->ibs_op_data2_high = pop_buffer_value(trans); |
| trans_op->ibs_op_data3_low = pop_buffer_value(trans); |
| trans_op->ibs_op_data3_high = pop_buffer_value(trans); |
| trans_op->ibs_op_ldst_linaddr_low = pop_buffer_value(trans); |
| trans_op->ibs_op_ldst_linaddr_high = pop_buffer_value(trans); |
| trans_op->ibs_op_phys_addr_low = pop_buffer_value(trans); |
| trans_op->ibs_op_phys_addr_high = pop_buffer_value(trans); |
| |
| get_ibs_op_bta_sample(trans, trans_op); |
| |
| verbprintf(vsamples, |
| "IBS_OP_X CPU:%ld PID:%d RIP:%lx D1HI:%x D1LO:%x D2LO:%x D3HI:%x D3LO:%x L_LO:%x P_LO:%x\n", |
| trans->cpu, |
| trans->tgid, |
| trans_op->rip, |
| trans_op->ibs_op_data1_high, |
| trans_op->ibs_op_data1_low, |
| trans_op->ibs_op_data2_low, |
| trans_op->ibs_op_data3_high, |
| trans_op->ibs_op_data3_low, |
| trans_op->ibs_op_ldst_linaddr_low, |
| trans_op->ibs_op_phys_addr_low); |
| |
| /* Overwrite the trans->pc with the more accurate trans_op->rip */ |
| trans->pc = trans_op->rip; |
| |
| opd_put_ibs_sample(trans); |
| |
| free(trans_op); |
| free(trans->ext); |
| trans->ext = NULL; |
| } |
| |
| |
| /** Convert IBS event to value used for data structure indexing */ |
| static unsigned long ibs_event_to_counter(unsigned long x) |
| { |
| unsigned long ret = ~0UL; |
| |
| if (IS_IBS_FETCH(x)) |
| ret = (x - IBS_FETCH_BASE); |
| else if (IS_IBS_OP(x)) |
| ret = (x - IBS_OP_BASE + IBS_FETCH_MAX); |
| else if (IS_IBS_OP_LS(x)) |
| ret = (x - IBS_OP_LS_BASE + IBS_OP_MAX + IBS_FETCH_MAX); |
| else if (IS_IBS_OP_NB(x)) |
| ret = (x - IBS_OP_NB_BASE + IBS_OP_LS_MAX + IBS_OP_MAX + IBS_FETCH_MAX); |
| |
| return (ret != ~0UL) ? ret + OP_MAX_COUNTERS : ret; |
| } |
| |
| |
| void opd_log_ibs_event(unsigned int event, |
| struct transient * trans) |
| { |
| ibs_derived_event_stats++; |
| trans->event = event; |
| sfile_log_sample_count(trans, 1); |
| } |
| |
| |
| void opd_log_ibs_count(unsigned int event, |
| struct transient * trans, |
| unsigned int count) |
| { |
| ibs_derived_event_stats++; |
| trans->event = event; |
| sfile_log_sample_count(trans, count); |
| } |
| |
| |
| static unsigned long get_ibs_vci_key(unsigned int event) |
| { |
| unsigned long key = ibs_event_to_counter(event); |
| if (key == ~0UL || key < OP_MAX_COUNTERS) |
| return ~0UL; |
| |
| key = key - OP_MAX_COUNTERS; |
| |
| return key; |
| } |
| |
| |
| static int ibs_parse_and_set_events(char * str) |
| { |
| char * tmp, * ptr, * tok1, * tok2 = NULL; |
| int is_done = 0; |
| struct op_event * event = NULL; |
| op_cpu cpu_type = CPU_NO_GOOD; |
| unsigned long key; |
| |
| if (!str) |
| return -1; |
| |
| cpu_type = op_get_cpu_type(); |
| op_events(cpu_type); |
| |
| tmp = op_xstrndup(str, strlen(str)); |
| ptr = tmp; |
| |
| while (is_done != 1 |
| && (tok1 = strtok_r(ptr, ",", &tok2)) != NULL) { |
| |
| if ((ptr = strstr(tok1, ":")) != NULL) { |
| *ptr = '\0'; |
| is_done = 1; |
| } |
| |
| // Resove event number |
| event = find_event_by_name(tok1, 0, 0); |
| if (!event) |
| return -1; |
| |
| // Grouping |
| if (IS_IBS_FETCH(event->val)) { |
| ibs_fetch_selected_flag |= 1 << IBS_FETCH_OFFSET(event->val); |
| } else if (IS_IBS_OP(event->val)) { |
| ibs_op_selected_flag |= 1 << IBS_OP_OFFSET(event->val); |
| } else if (IS_IBS_OP_LS(event->val)) { |
| ibs_op_ls_selected_flag |= 1 << IBS_OP_LS_OFFSET(event->val); |
| } else if (IS_IBS_OP_NB(event->val)) { |
| ibs_op_nb_selected_flag |= 1 << IBS_OP_NB_OFFSET(event->val); |
| } else { |
| return -1; |
| } |
| |
| key = get_ibs_vci_key(event->val); |
| if (key == ~0UL) |
| return -1; |
| |
| ibs_vci_map[key] = ibs_selected_size; |
| |
| /* Initialize part of ibs_vc */ |
| ibs_vc[ibs_selected_size].name = tok1; |
| ibs_vc[ibs_selected_size].value = event->val; |
| ibs_vc[ibs_selected_size].counter = ibs_selected_size + OP_MAX_COUNTERS; |
| ibs_vc[ibs_selected_size].kernel = 1; |
| ibs_vc[ibs_selected_size].user = 1; |
| |
| ibs_selected_size++; |
| |
| ptr = NULL; |
| } |
| |
| return 0; |
| } |
| |
| |
| static int ibs_parse_counts(char * str, unsigned long int * count) |
| { |
| char * tmp, * tok1, * tok2 = NULL, *end = NULL; |
| if (!str) |
| return -1; |
| |
| tmp = op_xstrndup(str, strlen(str)); |
| tok1 = strtok_r(tmp, ":", &tok2); |
| *count = strtoul(tok1, &end, 10); |
| if ((end && *end) || *count == 0 |
| || errno == EINVAL || errno == ERANGE) { |
| fprintf(stderr,"Invalid count (%s)\n", str); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| |
| static int ibs_parse_and_set_um_fetch(char const * str) |
| { |
| if (!str) |
| return -1; |
| return 0; |
| } |
| |
| |
| static int ibs_parse_and_set_um_op(char const * str, unsigned long int * ibs_op_um) |
| { |
| char * end = NULL; |
| if (!str) |
| return -1; |
| |
| *ibs_op_um = strtoul(str, &end, 16); |
| if ((end && *end) || errno == EINVAL || errno == ERANGE) { |
| fprintf(stderr,"Invalid unitmaks (%s)\n", str); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| static void check_cpuid_family_model_stepping() |
| { |
| #if defined(__i386__) || defined(__x86_64__) |
| unsigned eax = cpuid_signature(); |
| |
| ibs_family = cpu_family(eax); |
| ibs_model = cpu_model(eax); |
| ibs_stepping = cpu_stepping(eax); |
| #else |
| ibs_family = 0; |
| ibs_model = 0; |
| ibs_stepping = 0; |
| #endif |
| } |
| |
| |
| static int ibs_init(char const * argv) |
| { |
| char * tmp, * ptr, * tok1, * tok2 = NULL; |
| unsigned int i = 0; |
| unsigned long int ibs_fetch_count = 0; |
| unsigned long int ibs_op_count = 0; |
| unsigned long int ibs_op_um = 0; |
| |
| if (!argv) |
| return -1; |
| |
| if (empty_line(argv) != 0) |
| return -1; |
| |
| tmp = op_xstrndup(argv, strlen(argv)); |
| ptr = (char *) skip_ws(tmp); |
| |
| // "fetch:event1,event2,....:count:um|op:event1,event2,.....:count:um" |
| tok1 = strtok_r(ptr, "|", &tok2); |
| |
| while (tok1 != NULL) { |
| |
| if (!strncmp("fetch:", tok1, strlen("fetch:"))) { |
| // Get to event section |
| tok1 = tok1 + strlen("fetch:"); |
| if (ibs_parse_and_set_events(tok1) == -1) |
| return -1; |
| |
| // Get to count section |
| while (tok1) { |
| if (*tok1 == '\0') |
| return -1; |
| if (*tok1 != ':') { |
| tok1++; |
| } else { |
| tok1++; |
| break; |
| } |
| } |
| |
| if (ibs_parse_counts(tok1, &ibs_fetch_count) == -1) |
| return -1; |
| |
| // Get to um section |
| while (tok1) { |
| if (*tok1 == '\0') |
| return -1; |
| if (*tok1 != ':') { |
| tok1++; |
| } else { |
| tok1++; |
| break; |
| } |
| } |
| |
| if (ibs_parse_and_set_um_fetch(tok1) == -1) |
| return -1; |
| |
| } else if (!strncmp("op:", tok1, strlen("op:"))) { |
| // Get to event section |
| tok1 = tok1 + strlen("op:"); |
| if (ibs_parse_and_set_events(tok1) == -1) |
| return -1; |
| |
| // Get to count section |
| while (tok1) { |
| if (*tok1 == '\0') |
| return -1; |
| if (*tok1 != ':') { |
| tok1++; |
| } else { |
| tok1++; |
| break; |
| } |
| } |
| |
| if (ibs_parse_counts(tok1, &ibs_op_count) == -1) |
| return -1; |
| |
| // Get to um section |
| while (tok1) { |
| if (*tok1 == '\0') |
| return -1; |
| if (*tok1 != ':') { |
| tok1++; |
| } else { |
| tok1++; |
| break; |
| } |
| } |
| |
| if (ibs_parse_and_set_um_op(tok1, &ibs_op_um)) |
| return -1; |
| |
| } else |
| return -1; |
| |
| tok1 = strtok_r(NULL, "|", &tok2); |
| } |
| |
| /* Initialize ibs_vc */ |
| for (i = 0 ; i < ibs_selected_size ; i++) |
| { |
| if (IS_IBS_FETCH(ibs_vc[i].value)) { |
| ibs_vc[i].count = ibs_fetch_count; |
| ibs_vc[i].um = 0; |
| } else { |
| ibs_vc[i].count = ibs_op_count; |
| ibs_vc[i].um = ibs_op_um; |
| } |
| } |
| |
| // Allow no event |
| no_event_ok = 1; |
| |
| check_cpuid_family_model_stepping(); |
| |
| get_ibs_bta_status(); |
| |
| /* Create IBS memory access log */ |
| memaccess_log = NULL; |
| if (ibs_op_um & 0x2) { |
| char filename[PATH_MAX]; |
| char * log_file = "/samples/ibs_memaccess.log"; |
| size_t path_len = strlen(session_dir) + strlen(log_file); |
| if (path_len < PATH_MAX) { |
| strcpy(filename, session_dir); |
| strcat(filename, log_file); |
| memaccess_log = fopen(filename, "w"); |
| } |
| if ( memaccess_log == NULL) { |
| verbprintf(vext, "Warning: Cannot create ibs_memaccess.log\n"); |
| |
| } else { |
| fprintf (memaccess_log, "# IBS Memory Access Log\n\n"); |
| fprintf (memaccess_log, "# Format: app_cookie,cookie,cpu,tgid,tid,pc,branch-target-address,\n"); |
| fprintf (memaccess_log, "# phy-hi:phy-low,lin-hi:lin-low,accese-type,latency\n\n"); |
| } |
| } |
| |
| // Create IBS Branch Target Address (BTA) log |
| bta_log = NULL; |
| if (ibs_bta_enabled) { |
| char filename[PATH_MAX]; |
| char * log_file = "/samples/ibs_bta.log"; |
| size_t path_len = strlen(session_dir) + strlen(log_file); |
| if (path_len < PATH_MAX) { |
| strcpy(filename, session_dir); |
| strcat(filename, log_file); |
| bta_log = fopen(filename, "w"); |
| } |
| if ( bta_log == NULL) { |
| verbprintf(vext, "Warning: Cannot create ibs_bta.log\n"); |
| } else { |
| fprintf (bta_log, "# IBS Memory Access Log\n\n"); |
| fprintf (bta_log, "# Format: app_cookie,cookie,cpu,tgid,tid,pc,branch-target-address\n\n"); |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| static int ibs_deinit() |
| { |
| if (memaccess_log) { |
| fclose (memaccess_log); |
| memaccess_log = NULL; |
| } |
| |
| if (bta_log) { |
| fclose (bta_log); |
| bta_log = NULL; |
| } |
| return 0; |
| } |
| |
| |
| static int ibs_print_stats() |
| { |
| printf("Nr. IBS Fetch samples : %lu (%lu entries)\n", |
| ibs_fetch_sample_stats, (ibs_fetch_sample_stats * 7)); |
| printf("Nr. IBS Fetch incompletes : %lu\n", ibs_fetch_incomplete_stats); |
| printf("Nr. IBS Op samples : %lu (%lu entries)\n", |
| ibs_op_sample_stats, (ibs_op_sample_stats * 13)); |
| printf("Nr. IBS Op incompletes : %lu\n", ibs_op_incomplete_stats); |
| printf("Nr. IBS derived events : %lu\n", ibs_derived_event_stats); |
| return 0; |
| } |
| |
| |
| static int ibs_sfile_create(struct sfile * sf) |
| { |
| unsigned int i; |
| sf->ext_files = xmalloc(ibs_selected_size * sizeof(odb_t)); |
| for (i = 0 ; i < ibs_selected_size ; ++i) |
| odb_init(&sf->ext_files[i]); |
| |
| return 0; |
| } |
| |
| |
| static int ibs_sfile_dup (struct sfile * to, struct sfile * from) |
| { |
| unsigned int i; |
| if (from->ext_files != NULL) { |
| to->ext_files = xmalloc(ibs_selected_size * sizeof(odb_t)); |
| for (i = 0 ; i < ibs_selected_size ; ++i) |
| odb_init(&to->ext_files[i]); |
| } else { |
| to->ext_files = NULL; |
| } |
| return 0; |
| } |
| |
| static int ibs_sfile_close(struct sfile * sf) |
| { |
| unsigned int i; |
| if (sf->ext_files != NULL) { |
| for (i = 0; i < ibs_selected_size ; ++i) |
| odb_close(&sf->ext_files[i]); |
| |
| free(sf->ext_files); |
| sf->ext_files= NULL; |
| } |
| return 0; |
| } |
| |
| static int ibs_sfile_sync(struct sfile * sf) |
| { |
| unsigned int i; |
| if (sf->ext_files != NULL) { |
| for (i = 0; i < ibs_selected_size ; ++i) |
| odb_sync(&sf->ext_files[i]); |
| } |
| return 0; |
| } |
| |
| static odb_t * ibs_sfile_get(struct transient const * trans, int is_cg) |
| { |
| struct sfile * sf = trans->current; |
| struct sfile * last = trans->last; |
| struct cg_entry * cg; |
| struct list_head * pos; |
| unsigned long hash; |
| odb_t * file; |
| unsigned long counter, ibs_vci, key; |
| |
| /* Note: "trans->event" for IBS is not the same as traditional |
| * events. Here, it has the actual event (0xfxxx), while the |
| * traditional event has the event index. |
| */ |
| key = get_ibs_vci_key(trans->event); |
| if (key == ~0UL) { |
| fprintf(stderr, "%s: Invalid IBS event %lu\n", __func__, trans->event); |
| abort(); |
| } |
| ibs_vci = ibs_vci_map[key]; |
| counter = ibs_vci + OP_MAX_COUNTERS; |
| |
| /* Creating IBS sfile if it not already exists */ |
| if (sf->ext_files == NULL) |
| ibs_sfile_create(sf); |
| |
| file = &(sf->ext_files[ibs_vci]); |
| if (!is_cg) |
| goto open; |
| |
| hash = last->hashval & (CG_HASH_SIZE - 1); |
| |
| /* Need to look for the right 'to'. Since we're looking for |
| * 'last', we use its hash. |
| */ |
| list_for_each(pos, &sf->cg_hash[hash]) { |
| cg = list_entry(pos, struct cg_entry, hash); |
| if (sfile_equal(last, &cg->to)) { |
| file = &(cg->to.ext_files[ibs_vci]); |
| goto open; |
| } |
| } |
| |
| cg = xmalloc(sizeof(struct cg_entry)); |
| sfile_dup(&cg->to, last); |
| list_add(&cg->hash, &sf->cg_hash[hash]); |
| file = &(cg->to.ext_files[ibs_vci]); |
| |
| open: |
| if (!odb_open_count(file)) |
| opd_open_sample_file(file, last, sf, counter, is_cg); |
| |
| /* Error is logged by opd_open_sample_file */ |
| if (!odb_open_count(file)) |
| return NULL; |
| |
| return file; |
| } |
| |
| |
| /** Filled opd_event structure with IBS derived event information |
| * from the given counter value. |
| */ |
| static struct opd_event * ibs_sfile_find_counter_event(unsigned long counter) |
| { |
| unsigned long ibs_vci; |
| |
| if (counter >= OP_MAX_COUNTERS + OP_MAX_IBS_COUNTERS |
| || counter < OP_MAX_COUNTERS) { |
| fprintf(stderr,"Error: find_ibs_counter_event : " |
| "invalid counter value %lu.\n", counter); |
| abort(); |
| } |
| |
| ibs_vci = counter - OP_MAX_COUNTERS; |
| return &ibs_vc[ibs_vci]; |
| } |
| |
| |
| struct opd_ext_sfile_handlers ibs_sfile_handlers = |
| { |
| .create = &ibs_sfile_create, |
| .dup = &ibs_sfile_dup, |
| .close = &ibs_sfile_close, |
| .sync = &ibs_sfile_sync, |
| .get = &ibs_sfile_get, |
| .find_counter_event = &ibs_sfile_find_counter_event |
| }; |
| |
| |
| struct opd_ext_handlers ibs_handlers = |
| { |
| .ext_init = &ibs_init, |
| .ext_deinit = &ibs_deinit, |
| .ext_print_stats = &ibs_print_stats, |
| .ext_sfile = &ibs_sfile_handlers |
| }; |