He Zhe 88b88dd7d8 perf bench internals inject-build-id: Fix trap divide when collecting just one DSO
[ Upstream commit d9180e23fbfa3875424d3a6b28b71b072862a52a ]

'perf bench internals inject-build-id' suffers from the following error when
only one DSO is collected.

  # perf bench internals inject-build-id -v
    Collected 1 DSOs
  traps: internals-injec[2305] trap divide error
  ip:557566ba6394 sp:7ffd4de97fe0 error:0 in perf[557566b2a000+23d000]
    Build-id injection benchmark
    Iteration #1
  Floating point exception

This patch removes the unnecessary minus one from the divisor which also
corrects the randomization range.

Signed-off-by: He Zhe <zhe.he@windriver.com>
Fixes: 0bf02a0d80427f26 ("perf bench: Add build-id injection benchmark")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240507065026.2652929-1-zhe.he@windriver.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-12 11:12:26 +02:00
2023-08-31 12:20:12 -07:00
2022-09-28 09:02:20 +02:00
2022-10-10 12:00:45 -07:00
2024-05-25 16:22:56 +02:00

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.
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