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bcbd79d1cf
Allow to display time in perf debug output via new debug_set_display_time function. It will be used in perf daemon command to get verbose output into log file. The debug time format is: [2020-12-03 18:25:31.822152] affinity: SYS [2020-12-03 18:25:31.822164] mmap flush: 1 [2020-12-03 18:25:31.822175] comp level: 0 [2020-12-03 18:25:32.002047] mmap size 528384B Committer notes: Cast tod.tv_usec to long to avoid this problem: 78 12.70 ubuntu:18.04-x-sparc64 : FAIL sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 util/debug.c: In function 'fprintf_time': util/debug.c:63:32: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type '__suseconds_t {aka int}' [-Werror=format=] return fprintf(file, "[%s.%06lu] ", date, tod.tv_usec); ~~~~^ ~~~~~~~~~~~ %06u Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20210102220441.794923-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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README |
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.