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From: David Marchand <david.marchand@redhat.com>
To: Sunil Kumar Kori <skori@marvell.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	Jerin Jacob Kollanukkaran <jerinj@marvell.com>
Subject: Re: [dpdk-dev] [EXT] [PATCH 6/8] trace: remove limitation on patterns number
Date: Mon, 4 May 2020 16:14:04 +0200
Message-ID: <CAJFAV8zL85OJ8CyyXwV4za7aa9C4Lag1m+iRO8dtvxq6WZ0vTA@mail.gmail.com> (raw)
In-Reply-To: <BY5PR18MB310518DDF6A39CF6B06E9739B4A60@BY5PR18MB3105.namprd18.prod.outlook.com>

On Mon, May 4, 2020 at 10:48 AM Sunil Kumar Kori <skori@marvell.com> wrote:
> >diff --git a/lib/librte_eal/common/eal_common_trace_utils.c
> >b/lib/librte_eal/common/eal_common_trace_utils.c
> >index 4077acf428..15384ce4f1 100644
> >--- a/lib/librte_eal/common/eal_common_trace_utils.c
> >+++ b/lib/librte_eal/common/eal_common_trace_utils.c
> >@@ -138,25 +138,20 @@ int
> > eal_trace_args_save(const char *val)
> > {
> >       struct trace *trace = trace_obj_get();
> >-      char *trace_args;
> >-      uint8_t nb_args;
> >+      struct trace_arg *arg = malloc(sizeof(*arg));
> Won't "malloc(sizeof(struct trace_arg))" be more readable ?

ptr = malloc(sizeof(*ptr)); is more common in EAL code.
I prefer this form.


>
> >
> >-      nb_args = trace->args.nb_args;
> >-
> >-      if (nb_args >= TRACE_MAX_ARGS) {
> >-              trace_err("ignoring trace %s as limit exceeds", val);
> >-              return 0;
> >+      if (arg == NULL) {
> >+              trace_err("failed to allocate memory for %s", val);
> >+              return -ENOMEM;
> >       }
> >
> >-      trace_args = calloc(1, (strlen(val) + 1));
> >-      if (trace_args == NULL) {
> >-              trace_err("fail to allocate memory for %s", val);
> >+      arg->val = strdup(val);
> >+      if (arg->val == NULL) {
> >+              trace_err("failed to allocate memory for %s", val);
> "arg" needs to be freed here.

argh, indeed.


>
> >               return -ENOMEM;
> >       }
> >
> >-      memcpy(trace_args, val, strlen(val));
> >-      trace->args.args[nb_args++] = trace_args;
> >-      trace->args.nb_args = nb_args;
> >+      STAILQ_INSERT_TAIL(&trace->args, arg, next);
> >       return 0;
> > }
> >

> >diff --git a/lib/librte_eal/common/eal_trace.h
> >b/lib/librte_eal/common/eal_trace.h
> >index 7d95bd2aa9..943b5ecbc5 100644
> >--- a/lib/librte_eal/common/eal_trace.h
> >+++ b/lib/librte_eal/common/eal_trace.h
> >@@ -46,9 +46,9 @@ struct thread_mem_meta {
> >       enum trace_area_e area;
> > };
> >
> >-struct trace_args {
> >-      uint8_t nb_args;
> >-      char *args[TRACE_MAX_ARGS];
> >+struct trace_arg {
> >+      STAILQ_ENTRY(trace_arg) next;
> >+      char *val;
> > };
> >
> > struct trace {
> >@@ -59,7 +59,7 @@ struct trace {
> >       enum rte_trace_mode mode;
> >       rte_uuid_t uuid;
> >       uint32_t buff_len;
> >-      struct trace_args args;
> >+      STAILQ_HEAD(trace_arg_head, trace_arg) args;
> "trace_arg_head" is not required. It can be removed.

Ack.


>
> >       uint32_t nb_trace_points;
> >       uint32_t nb_trace_mem_list;
> >       struct thread_mem_meta *lcore_meta;
> >--
> >2.23.0
>


-- 
David Marchand


  reply	other threads:[~2020-05-04 14:14 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-03 20:31 [dpdk-dev] [PATCH 0/8] Traces cleanup for rc2 David Marchand
2020-05-03 20:31 ` [dpdk-dev] [PATCH 1/8] cryptodev: fix trace points registration David Marchand
2020-05-04  7:41   ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-05-03 20:31 ` [dpdk-dev] [PATCH 2/8] trace: simplify trace point registration David Marchand
2020-05-04  2:46   ` Jerin Jacob
2020-05-04 14:02     ` Thomas Monjalon
2020-05-04 14:04     ` David Marchand
2020-05-04 14:39       ` Jerin Jacob
2020-05-04 17:08         ` David Marchand
2020-05-04 17:19           ` Jerin Jacob
2020-05-04 17:40             ` David Marchand
2020-05-04 17:54               ` Jerin Jacob
2020-05-04 21:31                 ` Thomas Monjalon
2020-05-05  3:43                   ` Jerin Jacob
2020-05-05  7:01                     ` Thomas Monjalon
2020-05-05  7:17                       ` Jerin Jacob
2020-05-05  7:24                         ` Thomas Monjalon
2020-05-05  7:33                           ` Jerin Jacob
2020-05-05  8:23                             ` David Marchand
2020-05-05 10:12                               ` Jerin Jacob
2020-05-05 10:26                                 ` Thomas Monjalon
2020-05-05 10:46                                   ` Jerin Jacob
2020-05-05 11:48                                     ` Olivier Matz
2020-05-05 11:35                                 ` David Marchand
2020-05-05 12:26                                   ` Jerin Jacob
2020-05-05 15:25                                     ` Jerin Jacob
2020-05-05 16:28                                       ` David Marchand
2020-05-05 16:46                                         ` Jerin Jacob
2020-05-05 16:58                                           ` Thomas Monjalon
2020-05-05 17:08                                             ` Jerin Jacob
2020-05-05 17:09                                               ` Jerin Jacob
2020-05-05 17:20                                                 ` Thomas Monjalon
2020-05-05 17:28                                                   ` Jerin Jacob
2020-05-05 20:10                                                     ` Thomas Monjalon
2020-05-06  6:11                                                       ` Jerin Jacob
2020-07-04 14:31   ` Jerin Jacob
2020-07-04 15:14   ` [dpdk-dev] [PATCH v2] " David Marchand
2020-07-05 19:41     ` Thomas Monjalon
2020-05-03 20:31 ` [dpdk-dev] [PATCH 3/8] trace: simplify trace point headers David Marchand
2020-05-04  6:12   ` Jerin Jacob
2020-05-03 20:31 ` [dpdk-dev] [PATCH 4/8] trace: avoid confusion on optarg David Marchand
2020-05-04  7:55   ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-05-04 14:09     ` David Marchand
2020-05-05  5:45       ` Sunil Kumar Kori
2020-05-05  5:47         ` Sunil Kumar Kori
2020-05-03 20:31 ` [dpdk-dev] [PATCH 5/8] trace: remove unneeded checks in internal API David Marchand
2020-05-04  8:16   ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-05-03 20:31 ` [dpdk-dev] [PATCH 6/8] trace: remove limitation on patterns number David Marchand
2020-05-04  8:48   ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-05-04 14:14     ` David Marchand [this message]
2020-05-05  5:54       ` Sunil Kumar Kori
2020-05-03 20:31 ` [dpdk-dev] [PATCH 7/8] trace: remove string duplication David Marchand
2020-05-04  9:01   ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-05-03 20:31 ` [dpdk-dev] [PATCH 8/8] trace: fix build with gcc 10 David Marchand
2020-05-06 13:06 ` [dpdk-dev] [PATCH 0/8] Traces cleanup for rc2 David Marchand

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