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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id h6-20020a5d9e06000000b007a25540c49bsm4307891ioh.27.2023.10.12.12.48.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Oct 2023 12:48:39 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org Cc: david@redhat.com, lb@semihalf.com, linux@rasmusvillemoes.dk, joe@perches.com, mcgrof@kernel.org, Liam.Howlett@Oracle.com, linux-mm@kvack.org, Jim Cromie Subject: [RFC PATCH 03/10] dyndbg: add 2nd cursor pair to init-fn Date: Thu, 12 Oct 2023 13:48:27 -0600 Message-ID: <20231012194834.3288085-4-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231012194834.3288085-1-jim.cromie@gmail.com> References: <20231012194834.3288085-1-jim.cromie@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" In dynamic_debug_init(), add 2nd cursor pair to walk the __dyndbg_sites section in parallel with the __dyndbg section. This avoids using the _ddebug.site pointer during initialization, which is a 1st step towards dropping the member entirely, and reducing the struct size and section footprint. no functional change Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 0ad9f1bc00f0..51af6a75ae92 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1501,6 +1501,7 @@ static int __init dynamic_debug_init_control(void) =20 static int __init dynamic_debug_init(void) { + struct _ddebug_site *site, *site_mod_start; struct _ddebug *iter, *iter_mod_start; int ret, i, mod_sites, mod_ct; const char *modname; @@ -1508,9 +1509,11 @@ static int __init dynamic_debug_init(void) =20 struct _ddebug_info di =3D { .descs =3D __start___dyndbg, + .sites =3D __start___dyndbg_sites, .classes =3D __start___dyndbg_classes, .class_users =3D __start___dyndbg_class_users, .num_descs =3D __stop___dyndbg - __start___dyndbg, + .num_sites =3D __stop___dyndbg_sites - __start___dyndbg_sites, .num_classes =3D __stop___dyndbg_classes - __start___dyndbg_classes, .num_class_users =3D __stop___dyndbg_class_users - __start___dyndbg_clas= s_users, }; @@ -1533,16 +1536,19 @@ static int __init dynamic_debug_init(void) return 0; } =20 + site =3D site_mod_start =3D di.sites; iter =3D iter_mod_start =3D __start___dyndbg; modname =3D desc_modname(iter); i =3D mod_sites =3D mod_ct =3D 0; =20 - for (; iter < __stop___dyndbg; iter++, i++, mod_sites++) { + for (; iter < __stop___dyndbg; iter++, site++, i++, mod_sites++) { =20 if (strcmp(modname, desc_modname(iter))) { mod_ct++; di.num_descs =3D mod_sites; + di.num_sites =3D mod_sites; di.descs =3D iter_mod_start; + di.sites =3D site_mod_start; ret =3D ddebug_add_module(&di, modname); if (ret) goto out_err; @@ -1550,10 +1556,13 @@ static int __init dynamic_debug_init(void) mod_sites =3D 0; modname =3D desc_modname(iter); iter_mod_start =3D iter; + site_mod_start =3D site; } } di.num_descs =3D mod_sites; + di.num_sites =3D mod_sites; di.descs =3D iter_mod_start; + di.sites =3D site_mod_start; ret =3D ddebug_add_module(&di, modname); if (ret) goto out_err; --=20 2.41.0