linux/arch/mips/kernel/unaligned.c, branch v3.0.43

MIPS: add support for software performance events

2010-10-29T18:08:48Z

Software events are required as part of the measurable stuff by the Linux performance counter subsystem. Here is the list of events added by this patch: PERF_COUNT_SW_PAGE_FAULTS PERF_COUNT_SW_PAGE_FAULTS_MIN PERF_COUNT_SW_PAGE_FAULTS_MAJ PERF_COUNT_SW_ALIGNMENT_FAULTS PERF_COUNT_SW_EMULATION_FAULTS Signed-off-by: Deng-Cheng Zhu To: linux-mips@linux-mips.org Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: mingo@elte.hu Cc: acme@redhat.com Cc: jamie.iles@picochip.com Acked-by: David Daney Reviewed-by: Matt Fleming Patchwork: https://patchwork.linux-mips.org/patch/1686/ Signed-off-by: Ralf Baechle

MIPS: Sanitize restart logics

2010-10-18T15:59:02Z

Put the original syscall number into ->regs[0] when we leave syscall with error. Use it in restart logics. Everything else will have it 0 since we pass through SAVE_SOME on all the ways in. Note that in places like bad_stack and inllegal_syscall we leave it 0 - it's not restartable. Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1698/ Signed-off-by: Ralf Baechle

MIPS: Modularize COP2 handling

2009-12-17T01:57:30Z

Away with the daemons of ifdef; get ready for future COP2 users. Signed-off-by: Ralf Baechle Patchwork: http://patchwork.linux-mips.org/patch/708/

MIPS: Use force_sig when handling address errors.

2009-05-14T12:50:29Z

When init is started it is SIGNAL_UNKILLABLE. If it were to get an address error, we would try to send it SIGBUS, but it would be ignored and the faulting instruction restarted. This results in an endless loop. We need to use force_sig() instead so it will actually die and give us some useful information. Reported-by: Florian Fainelli Signed-off-by: David Daney Signed-off-by: Ralf Baechle

MIPS: Switch FPU emulator trap to BREAK instruction.

2008-10-30T14:44:34Z

Arguably using the address error handler has always been ugly. But with processors that handle unaligned loads and stores in hardware the current mechanism ceases to work so switch it to a BREAK instruction and allocate break code 514 to the FPU emulator. Yoichi Yuasa provided a build fix for CONFIG_BUG=n. Signed-off-by: Ralf Baechle Signed-off-by: Yoichi Yuasa

MIPS: Fix debugfs_create_*'s error checking method for mips/kernel/

2008-10-27T16:18:25Z

debugfs_create_*() returns NULL on error. Make its callers return -ENODEV on error. Signed-off-by: Zhao Lei Acked-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Fix "no space between function name and open parenthesis" warnings.

2007-10-11T22:46:15Z

Signed-off-by: Ralf Baechle

[MIPS] Fix build warning in unaligned load/store emulator.

2007-07-31T20:35:30Z

Signed-off-by: Ralf Baechle

[MIPS] Fixup secure computing stuff.

2007-07-31T20:35:21Z

Signed-off-by: Ralf Baechle

[MIPS] Add some debugfs files to debug unaligned accesses

2007-07-10T16:33:04Z

Currently a number of unaligned instructions is counted but not used. Add /debug/mips/unaligned_instructions file to show the value. And add /debug/mips/unaligned_action to control behavior upon an unaligned access. Possible actions are: 0: silently fixup the unaligned access. 1: send SIGBUS. 2: dump registers, process name, etc. and fixup. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle