From: Ferruh Yigit <ferruh.yigit@amd.com>
To: David Marchand <david.marchand@redhat.com>, <dev@dpdk.org>
Cc: <thomas@monjalon.net>, <andrew.rybchenko@oktetlabs.ru>,
Xiaoyun Li <xiaoyun.li@intel.com>,
Aman Singh <aman.deep.singh@intel.com>,
Yuying Zhang <yuying.zhang@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH 2/6] app/testpmd: register driver specific commands
Date: Mon, 23 May 2022 19:10:23 +0100 [thread overview]
Message-ID: <fa086c34-4b25-68a6-f328-33fd0265da22@amd.com> (raw)
In-Reply-To: <20220523071031.1868862-3-david.marchand@redhat.com>
On 5/23/2022 8:10 AM, David Marchand wrote:
> +int
> +init_cmdline(void)
> +{
> + struct testpmd_commands *c;
> + cmdline_parse_ctx_t *ctx;
> + unsigned int count = 0;
> + unsigned int i;
> +
> + /* initialize non-constant commands */
> + cmd_set_fwd_mode_init();
> + cmd_set_fwd_retry_mode_init();
> +
> + main_ctx = NULL;
> + for (i = 0; builtin_ctx[i] != NULL; i++) {
> + ctx = realloc(main_ctx, (count + i + 1) * sizeof(*ctx));
> + if (ctx == NULL)
> + goto err;
> + main_ctx = ctx;
Instead of 'realloc()', check and assign pointer in each entry, what do
you think about first calculate the size and alloc once, both for
'builtin_ctx' & driver specific command?
But of course trade off is to loop twice in that case.
> + main_ctx[count + i] = builtin_ctx[i];
> + }
no need to use 'count' in this loop, since it is always '0'.
> + count += i;
> +
> + TAILQ_FOREACH(c, &commands_head, next) {
> + for (i = 0; c->commands[i].ctx != NULL; i++) {
> + ctx = realloc(main_ctx, (count + i + 1) * sizeof(*ctx));
> + if (ctx == NULL)
> + goto err;
> + main_ctx = ctx;
> + main_ctx[count + i] = c->commands[i].ctx;
> + }
> + count += i;
> + }
> +
> + /* cmdline expects a NULL terminated array */
> + ctx = realloc(main_ctx, (count + 1) * sizeof(*ctx));
> + if (ctx == NULL)
> + goto err;
> + main_ctx = ctx;
> + main_ctx[count] = NULL;
> + count += 1;
Above block also can be avoided if size calculated in advance.
> +
> + return 0;
> +err:
> + free(main_ctx);
> + return -1;
> +}
> +
next prev parent reply other threads:[~2022-05-23 18:10 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 7:57 [RFC PATCH 0/4] Split driver specific commands out of testpmd David Marchand
2022-05-13 7:57 ` [RFC PATCH 1/4] app/testpmd: register driver specific commands David Marchand
2022-05-13 10:30 ` David Marchand
2022-05-13 7:57 ` [RFC PATCH 2/4] net/bonding: move testpmd commands David Marchand
2022-05-13 10:09 ` Min Hu (Connor)
2022-05-18 17:24 ` David Marchand
2022-05-18 23:25 ` Konstantin Ananyev
2022-05-19 7:40 ` David Marchand
2022-05-19 11:26 ` Thomas Monjalon
2022-05-20 6:59 ` Andrew Rybchenko
2022-05-24 9:40 ` Konstantin Ananyev
2022-05-24 10:15 ` Thomas Monjalon
2022-05-24 22:41 ` Konstantin Ananyev
2022-05-13 7:57 ` [RFC PATCH 3/4] net/i40e: " David Marchand
2022-05-13 7:57 ` [RFC PATCH 4/4] net/ixgbe: " David Marchand
2022-05-18 19:46 ` [RFC PATCH v2 0/5] Split driver specific commands out of testpmd David Marchand
2022-05-18 19:46 ` [RFC PATCH v2 1/5] app/testpmd: mark cmdline symbols as static David Marchand
2022-05-20 6:28 ` Andrew Rybchenko
2022-05-18 19:46 ` [RFC PATCH v2 2/5] app/testpmd: register driver specific commands David Marchand
2022-05-20 6:55 ` Andrew Rybchenko
2022-05-18 19:46 ` [RFC PATCH v2 3/5] net/bonding: move testpmd commands David Marchand
2022-05-20 6:55 ` Andrew Rybchenko
2022-05-18 19:46 ` [RFC PATCH v2 4/5] net/i40e: " David Marchand
2022-05-18 19:46 ` [RFC PATCH v2 5/5] net/ixgbe: " David Marchand
2022-05-20 7:04 ` [RFC PATCH v2 0/5] Split driver specific commands out of testpmd Andrew Rybchenko
2022-05-23 7:10 ` [PATCH 0/6] " David Marchand
2022-05-23 7:10 ` [PATCH 1/6] app/testpmd: mark most cmdline symbols as static David Marchand
2022-05-23 10:19 ` Dumitrescu, Cristian
2022-05-23 18:09 ` Ferruh Yigit
2022-05-23 7:10 ` [PATCH 2/6] app/testpmd: register driver specific commands David Marchand
2022-05-23 18:10 ` Ferruh Yigit [this message]
2022-05-24 10:53 ` David Marchand
2022-05-24 11:43 ` Ferruh Yigit
2022-05-24 17:21 ` Thomas Monjalon
2022-05-24 17:44 ` David Marchand
2022-05-24 17:51 ` Thomas Monjalon
2022-05-23 7:10 ` [PATCH 3/6] net/bonding: move testpmd commands David Marchand
2022-05-23 18:10 ` Ferruh Yigit
2022-06-17 5:06 ` [PATCH v2] " David Marchand
2022-06-20 17:53 ` Ferruh Yigit
2022-05-23 7:10 ` [PATCH 4/6] net/i40e: " David Marchand
2022-06-17 5:07 ` [PATCH v2] " David Marchand
2022-06-20 17:53 ` Ferruh Yigit
2022-05-23 7:10 ` [PATCH 5/6] app/testpmd: drop ixgbe bypass commands David Marchand
2022-05-23 18:10 ` Ferruh Yigit
2022-06-17 5:07 ` [PATCH v2 1/3] app/testpmd: restore " David Marchand
2022-06-17 5:07 ` [PATCH v2 2/3] net/ixgbe: move testpmd commands David Marchand
2022-06-17 5:07 ` [PATCH v2 3/3] net/ixgbe: move bypass init in a testpmd command David Marchand
2022-06-20 19:04 ` Ferruh Yigit
2022-06-23 12:35 ` Zhang, Qi Z
2022-07-21 8:05 ` [PATCH v3 1/3] app/testpmd: restore ixgbe bypass commands David Marchand
2022-07-21 8:05 ` [PATCH v3 2/3] net/ixgbe: move testpmd commands David Marchand
2022-07-21 8:05 ` [PATCH v3 3/3] net/ixgbe: move bypass init in a testpmd command David Marchand
2022-08-25 10:37 ` Ferruh Yigit
2022-08-25 11:44 ` [PATCH v3 1/3] app/testpmd: restore ixgbe bypass commands Ferruh Yigit
2022-05-23 7:10 ` [PATCH 6/6] net/ixgbe: move testpmd commands David Marchand
2022-05-23 18:09 ` [PATCH 0/6] Split driver specific commands out of testpmd Ferruh Yigit
2022-05-24 20:06 ` [PATCH v2 0/2] " David Marchand
2022-05-24 20:06 ` [PATCH v2 1/2] app/testpmd: mark most cmdline symbols as static David Marchand
2022-05-31 15:15 ` Andrew Rybchenko
2022-05-24 20:06 ` [PATCH v2 2/2] app/testpmd: register driver specific commands David Marchand
2022-05-24 20:28 ` Thomas Monjalon
2022-05-31 15:14 ` Andrew Rybchenko
2022-05-31 15:18 ` David Marchand
2022-05-31 15:18 ` [PATCH v2 0/2] Split driver specific commands out of testpmd Andrew Rybchenko
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