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Commit 6a879b25 authored by Hridya Valsaraju's avatar Hridya Valsaraju
Browse files

Check /sys/kernel/tracing for tracefs 

When debugfs is not mounted, atrace should look for
tracefs in /sys/kernel/tracing.

Test: CtsAtraceHostTestCases
Bug: 148436518
Change-Id: I45c0e664892bcda277fd9612106ad5216aea0a1b
parent b2066fda

libcutils/trace-dev.cpp

+4 −0
Original line number Diff line number Diff line
@@ -31,6 +31,10 @@ void atrace_set_tracing_enabled(bool enabled) 
static void atrace_init_once()

{

    atrace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_WRONLY | O_CLOEXEC);

    if (atrace_marker_fd == -1) {

        atrace_marker_fd = open("/sys/kernel/tracing/trace_marker", O_WRONLY | O_CLOEXEC);

    }



    if (atrace_marker_fd == -1) {

        ALOGE("Error opening trace file: %s (%d)", strerror(errno), errno);

        atrace_enabled_tags = 0;