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Message-Id: <1432190593-17253-1-git-send-email-khandual@linux.vnet.ibm.com> Date: Thu, 21 May 2015 12:13:00 +0530 From: Anshuman Khandual <khandual@...ux.vnet.ibm.com> To: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org Cc: mikey@...ling.org, anton@...ba.org, shuahkh@....samsung.com, mpe@...erman.id.au Subject: [PATCH V5 00/13] POWER DSCR fixes, improvements, docs and tests This patch series has patches for POWER DSCR fixes, improvements, in code documentaion, kernel support user documentation and selftest based test cases. It has got five test cases which are derived from Anton's DSCR test bucket which can be listed as follows. (1) http://ozlabs.org/~anton/junkcode/dscr_default_test.c (2) http://ozlabs.org/~anton/junkcode/dscr_explicit_test.c (3) http://ozlabs.org/~anton/junkcode/dscr_inherit_exec_test.c (4) http://ozlabs.org/~anton/junkcode/dscr_inherit_test.c (5) http://ozlabs.org/~anton/junkcode/user_dscr_test.c NOTE1: Anton's original inherit exec test expected the child to have system default DSCR value instead of the inherited DSCR value from it's parent. But looks like thats not the case when we execute the test, it always inherits it's parent's DSCR value over the exec call as well. So I have changed the test program assuming its correct to have the inherited DSCR value in the fork/execed child program. Please let me know if thats not correct and I am missing something there. Changes in V5: ------------- - Fixed build problem with get_default_dscr/set_default_dscr functions by checking on the return values of read & write system calls. Changes in V4: (https://lkml.org/lkml/2015/5/18/215) -------------- - Restoring the system DSCR default value in test cases before exiting - Removed new-line from all the perror() calls - Some minor cosmetic changes to the test cases - Added Anton's SOB to the above mentioned five derived test cases Changes in V3: (https://lkml.org/lkml/2015/4/10/117) -------------- - Minor changes to last couple of sysfs test cases - Added .gitignore file for the new test directory Changes in V2: (https://lkml.org/lkml/2015/1/13/148) ------------- - Updated the thread struct DSCR value inside mtspr facility exception path - Modified the in code documentation to follow the kernel-doc format - Added seven selftest based DSCR related test cases under powerpc Original V1: ------------ - Posted here at https://patchwork.ozlabs.org/patch/418583/ Anshuman Khandual (13): powerpc: Fix handling of DSCR related facility unavailable exception powerpc, process: Remove the unused extern dscr_default powerpc, offset: Change PACA_DSCR to PACA_DSCR_DEFAULT powerpc, dscr: Added some in-code documentation documentation, powerpc: Add documentation for DSCR support selftests, powerpc: Add test for system wide DSCR default selftests, powerpc: Add test for explicitly changing DSCR value selftests, powerpc: Add test for DSCR SPR numbers selftests, powerpc: Add test for DSCR value inheritence across fork selftests, powerpc: Add test for DSCR inheritence across fork & exec selftests, powerpc: Add test for all DSCR sysfs interfaces selftests, powerpc: Add thread based stress test for DSCR sysfs interfaces selftests, powerpc: Add gitignore file for the new DSCR tests Documentation/powerpc/00-INDEX | 2 + Documentation/powerpc/dscr.txt | 83 +++++++++++++ arch/powerpc/include/asm/processor.h | 9 ++ arch/powerpc/kernel/asm-offsets.c | 2 +- arch/powerpc/kernel/entry_64.S | 2 +- arch/powerpc/kernel/process.c | 1 - arch/powerpc/kernel/sysfs.c | 38 ++++++ arch/powerpc/kernel/tm.S | 4 +- arch/powerpc/kernel/traps.c | 45 +++++++- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 +- tools/testing/selftests/powerpc/Makefile | 2 +- tools/testing/selftests/powerpc/dscr/.gitignore | 7 ++ tools/testing/selftests/powerpc/dscr/Makefile | 19 +++ tools/testing/selftests/powerpc/dscr/dscr.h | 128 +++++++++++++++++++++ .../selftests/powerpc/dscr/dscr_default_test.c | 128 +++++++++++++++++++++ .../selftests/powerpc/dscr/dscr_explicit_test.c | 72 ++++++++++++ .../powerpc/dscr/dscr_inherit_exec_test.c | 118 +++++++++++++++++++ .../selftests/powerpc/dscr/dscr_inherit_test.c | 96 ++++++++++++++++ .../selftests/powerpc/dscr/dscr_sysfs_test.c | 98 ++++++++++++++++ .../powerpc/dscr/dscr_sysfs_thread_test.c | 123 ++++++++++++++++++++ .../selftests/powerpc/dscr/dscr_user_test.c | 62 ++++++++++ 21 files changed, 1029 insertions(+), 12 deletions(-) create mode 100644 Documentation/powerpc/dscr.txt create mode 100644 tools/testing/selftests/powerpc/dscr/.gitignore create mode 100644 tools/testing/selftests/powerpc/dscr/Makefile create mode 100644 tools/testing/selftests/powerpc/dscr/dscr.h create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_default_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_explicit_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_inherit_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_sysfs_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_sysfs_thread_test.c create mode 100644 tools/testing/selftests/powerpc/dscr/dscr_user_test.c -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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