• Athira Rajeev's avatar
    perf probe: Update the exit error codes in function try_to_find_probe_trace_event · 67ef66ba
    Athira Rajeev authored
    try_to_find_probe_trace_events() uses return error code as ENOENT in two
    places.
    
    First place is after open_debuginfo() when opening debuginfo fails and
    secondly, after when not finding the probe point.
    
    This function is invoked during BPF load and there are other exit points
    in this code path which returns ENOENT. This makes it difficult to
    understand the exact reason for exit.
    
    Patches changes the exit code from ENOENT to:
    
    - ENODATA when it fails to find debuginfo
    
    - ENODEV when it fails to find probe point
    Signed-off-by: default avatarAthira Rajeev <atrajeev@linux.vnet.ibm.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Disha Goel <disgoel@linux.ibm.com>
    Cc: Ian Rogers <irogers@google.com>
    Cc: James Clark <james.clark@arm.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kajol Jain <kjain@linux.ibm.com>
    Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
    Cc: Michael Ellerman <mpe@ellerman.id.au>
    Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: linuxppc-dev@lists.ozlabs.org
    Link: https://lore.kernel.org/r/20230105121742.92249-1-atrajeev@linux.vnet.ibm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    67ef66ba
probe-event.c 86.9 KB