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514607e3c0
Don't use deprecated and now broken map style. Avoid use of
tools/perf/include/bpf/bpf.h and use the more regular BPF headers.
Switch to raw_syscalls:sys_enter to avoid the evlist being empty and
fixing generating output.
Committer testing:
# perf trace -e ~acme/git/perf/tools/perf/examples/bpf/hello.c --call-graph=dwarf --max-events 5
0.000 perf/206852 __bpf_stdout__(Hello, world)
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
__GI___sched_setaffinity_new (/usr/lib64/libc.so.6)
8.561 pipewire/2290 __bpf_stdout__(Hello, world)
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
__libc_read (/usr/lib64/libc.so.6)
8.571 pipewire/2290 __bpf_stdout__(Hello, world)
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
__GI___ioctl (/usr/lib64/libc.so.6)
8.586 pipewire/2290 __bpf_stdout__(Hello, world)
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
__GI___write (/usr/lib64/libc.so.6)
8.592 pipewire/2290 __bpf_stdout__(Hello, world)
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
syscall_trace_enter.constprop.0 ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64_after_hwframe ([kernel.kallsyms])
__timerfd_settime (/usr/lib64/libc.so.6)
#
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20221103045437.163510-5-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.