在 2020年01月29日 00:19, John Ogness 写道: > Hello, > > After several RFC series [0][1][2][3][4], here is the first set of > patches to rework the printk subsystem. This first set of patches > only replace the existing ringbuffer implementation. No locking is > removed. No semantics/behavior of printk are changed. > > The VMCOREINFO is updated, which will require changes to the > external crash [5] tool. I will be preparing a patch to add support > for the new VMCOREINFO. > In addition to changing the crash utility, I would think that the kexec-tools(such as the vmcore-dmesg and makedumpfile) also need to be modified accordingly. Thanks Lianbo > This series is in line with the agreements [6] made at the meeting > during LPC2019 in Lisbon, with 1 exception: support for dictionaries > will _not_ be discontinued [7]. Dictionaries are stored in a separate > buffer so that they cannot interfere with the human-readable buffer. > > John Ogness > > [0] https://lkml.kernel.org/r/20190212143003.48446-1-john.ogness@xxxxxxxxxxxxx > [1] https://lkml.kernel.org/r/20190607162349.18199-1-john.ogness@xxxxxxxxxxxxx > [2] https://lkml.kernel.org/r/20190727013333.11260-1-john.ogness@xxxxxxxxxxxxx > [3] https://lkml.kernel.org/r/20190807222634.1723-1-john.ogness@xxxxxxxxxxxxx > [4] https://lkml.kernel.org/r/20191128015235.12940-1-john.ogness@xxxxxxxxxxxxx > [5] https://github.com/crash-utility/crash > [6] https://lkml.kernel.org/r/87k1acz5rx.fsf@xxxxxxxxxxxxx > [7] https://lkml.kernel.org/r/20191007120134.ciywr3wale4gxa6v@xxxxxxxxxxxxxxx > > John Ogness (2): > printk: add lockless buffer > printk: use the lockless ringbuffer > > include/linux/kmsg_dump.h | 2 - > kernel/printk/Makefile | 1 + > kernel/printk/printk.c | 836 +++++++++--------- > kernel/printk/printk_ringbuffer.c | 1370 +++++++++++++++++++++++++++++ > kernel/printk/printk_ringbuffer.h | 328 +++++++ > 5 files changed, 2114 insertions(+), 423 deletions(-) > create mode 100644 kernel/printk/printk_ringbuffer.c > create mode 100644 kernel/printk/printk_ringbuffer.h > _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
