openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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
This commit is contained in:
Hridya Valsaraju 2020-01-30 17:34:46 -08:00
parent b2066fda6d
commit 6a879b25d9
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libcutils/trace-dev.cpp
View File

@ -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;