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1b29dfbba1
The register name of arm64 architecture is x0-x31 not r0-r31, this patch
changes this typo.
Before this patch:
# perf probe --definition 'sys_write count'
p:probe/sys_write _text+1502872 count=%r2:s64
# echo 'p:probe/sys_write _text+1502872 count=%r2:s64' > \
/sys/kernel/debug/tracing/kprobe_events
Parse error at argument[0]. (-22)
After this patch:
# perf probe --definition 'sys_write count'
p:probe/sys_write _text+1502872 count=%x2:s64
# echo 'p:probe/sys_write _text+1502872 count=%x2:s64' > \
/sys/kernel/debug/tracing/kprobe_events
# echo 1 >/sys/kernel/debug/tracing/events/probe/enable
# cat /sys/kernel/debug/tracing/trace
...
sh-422 [000] d... 650.495930: sys_write: (SyS_write+0x0/0xc8) count=22
sh-422 [000] d... 651.102389: sys_write: (SyS_write+0x0/0xc8) count=26
sh-422 [000] d... 651.358653: sys_write: (SyS_write+0x0/0xc8) count=86
Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bintian Wang <bintian.wang@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170124103015.1936-2-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.