On Thu, Dec 01, 2016 at 09:37:46AM -0700, Ross Zwisler wrote: > Tracepoints are the standard way to capture debugging and tracing > information in many parts of the kernel, including the XFS and ext4 > filesystems. This series creates a tracepoint header for FS DAX and add > the first few DAX tracepoints to the PMD fault handler. This allows the > tracing for DAX to be done in the same way as the filesystem tracing so > that developers can look at them together and get a coherent idea of what > the system is doing. > > I do intend to add tracepoints to the normal 4k DAX fault path and to the > DAX I/O path, but I wanted to get feedback on the PMD tracepoints before I > went any further. > > This series is based on Jan Kara's "dax: Clear dirty bits after flushing > caches" series: > > https://lists.01.org/pipermail/linux-nvdimm/2016-November/007864.html > > I've pushed a git tree with this work here: > > https://git.kernel.org/cgit/linux/kernel/git/zwisler/linux.git/log/?h=dax_tracepoints_v3 > > Changes since v2: > - Dropped "dax: remove leading space from labels" patch. (Jan) > - Reordered TP_STRUCT__entry() fields so that all the 64 bit entries (for > 64 bit machines) come first, followed by the 32 bit entries. This > allows for optimal packing of the entires. (Steve) > - Fixed 'mask' in trace_print_flags_seq_u64() to be an unsigned long long. > (Steve) > > Ross Zwisler (5): > tracing: add __print_flags_u64() > dax: add tracepoint infrastructure, PMD tracing > dax: update MAINTAINERS entries for FS DAX > dax: add tracepoints to dax_pmd_load_hole() > dax: add tracepoints to dax_pmd_insert_mapping() > > MAINTAINERS | 5 +- > fs/dax.c | 56 ++++++++++----- > include/linux/mm.h | 25 +++++++ > include/linux/pfn_t.h | 6 ++ > include/linux/trace_events.h | 4 ++ > include/trace/events/fs_dax.h | 161 ++++++++++++++++++++++++++++++++++++++++++ > include/trace/trace_events.h | 11 +++ > kernel/trace/trace_output.c | 38 ++++++++++ > 8 files changed, 288 insertions(+), 18 deletions(-) > create mode 100644 include/trace/events/fs_dax.h Ping on this series - Dave, were you planning on sending this for v4.10-rc1? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
