Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754037AbdIEV7M (ORCPT ); Tue, 5 Sep 2017 17:59:12 -0400 Received: from mga06.intel.com ([134.134.136.31]:61494 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754007AbdIEV7E (ORCPT ); Tue, 5 Sep 2017 17:59:04 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,481,1498546800"; d="scan'208";a="308304342" From: Tom Zanussi To: rostedt@goodmis.org Cc: tglx@linutronix.de, mhiramat@kernel.org, namhyung@kernel.org, vedang.patel@intel.com, bigeasy@linutronix.de, joel.opensrc@gmail.com, joelaf@google.com, mathieu.desnoyers@efficios.com, baohong.liu@intel.com, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Tom Zanussi Subject: [PATCH v2 23/40] tracing: Add hist_field 'type' field Date: Tue, 5 Sep 2017 16:57:35 -0500 Message-Id: X-Mailer: git-send-email 1.9.3 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3562 Lines: 112 Future support for synthetic events requires hist_field 'type' information, so add a field for that. Also, make other hist_field attribute usage consistent (size, is_signed, etc). Signed-off-by: Tom Zanussi --- kernel/trace/trace_events_hist.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index c7dbe37..4650c22 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -54,6 +54,7 @@ struct hist_field { unsigned int size; unsigned int offset; unsigned int is_signed; + const char *type; struct hist_field *operands[HIST_FIELD_OPERANDS_MAX]; struct hist_trigger_data *hist_data; struct hist_var var; @@ -650,6 +651,7 @@ static void destroy_hist_field(struct hist_field *hist_field, kfree(hist_field->var.name); kfree(hist_field->name); + kfree(hist_field->type); kfree(hist_field); } @@ -675,6 +677,10 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, if (flags & HIST_FIELD_FL_HITCOUNT) { hist_field->fn = hist_field_counter; + hist_field->size = sizeof(u64); + hist_field->type = kstrdup("u64", GFP_KERNEL); + if (!hist_field->type) + goto free; goto out; } @@ -688,12 +694,18 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, hist_field->fn = hist_field_log2; hist_field->operands[0] = create_hist_field(hist_data, field, fl, NULL); hist_field->size = hist_field->operands[0]->size; + hist_field->type = kstrdup(hist_field->operands[0]->type, GFP_KERNEL); + if (!hist_field->type) + goto free; goto out; } if (flags & HIST_FIELD_FL_TIMESTAMP) { hist_field->fn = hist_field_timestamp; hist_field->size = sizeof(u64); + hist_field->type = kstrdup("u64", GFP_KERNEL); + if (!hist_field->type) + goto free; goto out; } @@ -703,6 +715,11 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, if (is_string_field(field)) { flags |= HIST_FIELD_FL_STRING; + hist_field->size = MAX_FILTER_STR_VAL; + hist_field->type = kstrdup(field->type, GFP_KERNEL); + if (!hist_field->type) + goto free; + if (field->filter_type == FILTER_STATIC_STRING) hist_field->fn = hist_field_string; else if (field->filter_type == FILTER_DYN_STRING) @@ -710,6 +727,12 @@ static struct hist_field *create_hist_field(struct hist_trigger_data *hist_data, else hist_field->fn = hist_field_pstring; } else { + hist_field->size = field->size; + hist_field->is_signed = field->is_signed; + hist_field->type = kstrdup(field->type, GFP_KERNEL); + if (!hist_field->type) + goto free; + hist_field->fn = select_value_fn(field->size, field->is_signed); if (!hist_field->fn) { @@ -917,6 +940,11 @@ static struct hist_field *parse_unary(struct hist_trigger_data *hist_data, expr->operands[0] = operand1; expr->operator = FIELD_OP_UNARY_MINUS; expr->name = expr_str(expr, 0); + expr->type = kstrdup(operand1->type, GFP_KERNEL); + if (!expr->type) { + ret = -ENOMEM; + goto free; + } return expr; free: @@ -1005,6 +1033,11 @@ static struct hist_field *parse_expr(struct hist_trigger_data *hist_data, expr->operands[1] = operand2; expr->operator = field_op; expr->name = expr_str(expr, 0); + expr->type = kstrdup(operand1->type, GFP_KERNEL); + if (!expr->type) { + ret = -ENOMEM; + goto free; + } switch (field_op) { case FIELD_OP_MINUS: -- 1.9.3