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| author |  Zenghui Yu <yuzenghui@huawei.com>
| 2018-11-28 03:35:23 +0000 |
|---|---|---|
| committer |  Steven Rostedt (VMware) <rostedt@goodmis.org>
| 2018-11-29 22:08:38 -0500 |
| commit | 0c7a52e4d4b5c4d35b31f3c3ad32af814f1bf491 (patch) | |
| tree | 9a4f0aa2071f6b1561c3b0f8b382368ab49eb834 /kernel/trace/trace_functions_graph.c | |
| parent | sched, trace: Fix prev_state output in sched_switch tracepoint (diff) | |
| download | linux-0c7a52e4d4b5c4d35b31f3c3ad32af814f1bf491.tar.gz linux-0c7a52e4d4b5c4d35b31f3c3ad32af814f1bf491.tar.bz2 linux-0c7a52e4d4b5c4d35b31f3c3ad32af814f1bf491.zip | |
tracepoint: Use __idx instead of idx in DO_TRACE macro to make it unique
After enabling KVM event tracing, almost all of trace_kvm_exit()'s
printk shows
"kvm_exit: IRQ: ..."
even if the actual exception_type is NOT IRQ. More specifically,
trace_kvm_exit() is defined in virt/kvm/arm/trace.h by TRACE_EVENT.
This slight problem may have existed after commit e6753f23d961
("tracepoint: Make rcuidle tracepoint callers use SRCU"). There are
two variables in trace_kvm_exit() and __DO_TRACE() which have the
same name, *idx*. Thus the actual value of *idx* will be overwritten
when tracing. Fix it by adding a simple prefix.
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Wang Haibin <wanghaibin.wang@huawei.com>
Cc: linux-trace-devel@vger.kernel.org
Cc: stable@vger.kernel.org
Fixes: e6753f23d961 ("tracepoint: Make rcuidle tracepoint callers use SRCU")
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
0 files changed, 0 insertions, 0 deletions