• Arnaldo Carvalho de Melo's avatar
    perf tools: Fix usage of max_stack sysctl · fe176085
    Arnaldo Carvalho de Melo authored
    We cannot limit processing stacks from the current value of the sysctl,
    as we may be processing perf.data files, possibly from other machines.
    
    Instead use the old PERF_MAX_STACK_DEPTH, the sysctl default, that can
    be overriden using --max-stack or equivalent.
    
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Alexei Starovoitov <ast@kernel.org>
    Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: He Kuang <hekuang@huawei.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Masami Hiramatsu <mhiramat@kernel.org>
    Cc: Milian Wolff <milian.wolff@kdab.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Vince Weaver <vincent.weaver@maine.edu>
    Cc: Wang Nan <wangnan0@huawei.com>
    Cc: Zefan Li <lizefan@huawei.com>
    Fixes: 4cb93446 ("perf tools: Set the maximum allowed stack from /proc/sys/kernel/perf_event_max_stack")
    Link: http://lkml.kernel.org/n/tip-eqeutsr7n7wy0c36z24ytvii@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    fe176085
perf-trace.txt 6.29 KB