[v6,0/3] Improve surplus TLS accounting
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From: Szabolcs Nagy <szabolcs.nagy@arm.com>
To: libc-alpha@sourceware.org
Subject: [PATCH v6 0/3] Improve surplus TLS accounting
Date: Wed, 8 Jul 2020 11:58:22 +0100
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Message
Szabolcs Nagy
July 8, 2020, 10:58 a.m. UTC
Now with audit modules accounted too (in a separate patch). DL_NNS is still constant so loading audit modules does not work e.g. if rtld.nns is set to DL_NNS. tested that GLIBC_TUNABLES=glibc.rtld.nns=7 make t=elf/tst-auditmany test works (7 ns reserved for user 9 audit modules are loaded) and GLIBC_TUNABLES=glibc.rtld.nns=8 make t=elf/tst-auditmany test fails (glibc exits early with error message). Szabolcs Nagy (3): rtld: Add rtld.nns tunable for the number of supported namespaces rtld: Account static TLS surplus for audit modules rtld: Avoid using up static TLS surplus for optimizations [BZ #25051] csu/libc-tls.c | 31 +++++----- elf/Makefile | 29 +++++++++- elf/dl-reloc.c | 37 +++++++++--- elf/dl-tls.c | 67 ++++++++++++++++++++-- elf/dl-tunables.list | 14 +++++ elf/dynamic-link.h | 5 +- elf/rtld.c | 32 ++++++++++- elf/tst-tls-ie-dlmopen.c | 112 +++++++++++++++++++++++++++++++++++++ elf/tst-tls-ie-mod.h | 40 +++++++++++++ elf/tst-tls-ie-mod0.c | 4 ++ elf/tst-tls-ie-mod1.c | 4 ++ elf/tst-tls-ie-mod2.c | 4 ++ elf/tst-tls-ie-mod3.c | 4 ++ elf/tst-tls-ie-mod4.c | 4 ++ elf/tst-tls-ie-mod5.c | 4 ++ elf/tst-tls-ie-mod6.c | 4 ++ elf/tst-tls-ie.c | 111 ++++++++++++++++++++++++++++++++++++ manual/tunables.texi | 38 +++++++++++++ sysdeps/generic/ldsodefs.h | 12 ++++ 19 files changed, 521 insertions(+), 35 deletions(-) create mode 100644 elf/tst-tls-ie-dlmopen.c create mode 100644 elf/tst-tls-ie-mod.h create mode 100644 elf/tst-tls-ie-mod0.c create mode 100644 elf/tst-tls-ie-mod1.c create mode 100644 elf/tst-tls-ie-mod2.c create mode 100644 elf/tst-tls-ie-mod3.c create mode 100644 elf/tst-tls-ie-mod4.c create mode 100644 elf/tst-tls-ie-mod5.c create mode 100644 elf/tst-tls-ie-mod6.c create mode 100644 elf/tst-tls-ie.c