Message ID | 20231012194711.3288031-9-jim.cromie@gmail.com (mailing list archive) |
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State | New |
Headers | show
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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id z7-20020a5ec907000000b0079fbb834232sm4351002iol.19.2023.10.12.12.47.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Oct 2023 12:47:28 -0700 (PDT) From: Jim Cromie <jim.cromie@gmail.com> To: linux-kernel@vger.kernel.org Cc: david@redhat.com, Liam.Howlett@Oracle.com, linux-mm@kvack.org, Jim Cromie <jim.cromie@gmail.com> Subject: [RFC PATCH 08/10] dyndbg: drop _ddebug.site member Date: Thu, 12 Oct 2023 13:47:09 -0600 Message-ID: <20231012194711.3288031-9-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231012194711.3288031-1-jim.cromie@gmail.com> References: <20231012194711.3288031-1-jim.cromie@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4D2CD1C000D X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: 93mq6hyko8fa6aad8zcon4i746szn37k X-HE-Tag: 1697140050-826069 X-HE-Meta: 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 r4p6BOWC 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
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how to reclaim unneeded vmlinux memory ?
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expand
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diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 5206a2cfdb37..406b30d8eb98 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -27,7 +27,6 @@ struct _ddebug_site { }; struct _ddebug { - struct _ddebug_site *site; const char *format; unsigned int lineno:18; #define CLS_BITS 6 @@ -228,13 +227,12 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor, ._filename = __FILE__ #define DEFINE_DYNAMIC_DEBUG_METADATA_CLS(name, cls, fmt) \ - static struct _ddebug_site __aligned(8) \ + static struct _ddebug_site __used __aligned(8) \ __section("__dyndbg_sites") name ##_site = { \ DYNAMIC_DEBUG_SITE_INIT(), \ }; \ - static struct _ddebug __aligned(8) \ + static struct _ddebug __used __aligned(8) \ __section("__dyndbg") name = { \ - .site = &(name ##_site), \ .format = (fmt), \ .lineno = __LINE__, \ .flags = _DPRINTK_FLAGS_DEFAULT, \
drop site ptr, and rely upon the maple-tree intervals loaded by ddebug_condense_sites(). In DEFINE_DYNAMIC_DEBUG_METADATA_CLS(), which creates a pair of _ddebug & _ddebug_site structs, add '__used' to the latter, because it is no longer linked from the former, and then also to the former, so they both have the same number of entries. Replace the BUG_ON with a pr_warn that shows the size of the mismatch. TODO: sort out where the extra records are coming from. Signed-off-by: Jim Cromie <jim.cromie@gmail.com> --- include/linux/dynamic_debug.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)