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| author | Peter Zijlstra <peterz@infradead.org> | 2020-08-07 21:53:16 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-08-26 13:41:56 +0300 |
| commit | eb1f00237aca2e368b93db79303f8433d1976d10 (patch) | |
| tree | 4923e5e3564921099b83b1f791e83507175c59ef /arch/arm64 | |
| parent | 044d0d6de9f50192f9697583504a382347ee95ca (diff) | |
| download | linux-eb1f00237aca2e368b93db79303f8433d1976d10.tar.xz | |
lockdep,trace: Expose tracepoints
The lockdep tracepoints are under the lockdep recursion counter, this
has a bunch of nasty side effects:
- TRACE_IRQFLAGS doesn't work across the entire tracepoint
- RCU-lockdep doesn't see the tracepoints either, hiding numerous
"suspicious RCU usage" warnings.
Pull the trace_lock_*() tracepoints completely out from under the
lockdep recursion handling and completely rely on the trace level
recusion handling -- also, tracing *SHOULD* not be taking locks in any
case.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200821085348.782688941@infradead.org
Diffstat (limited to 'arch/arm64')
0 files changed, 0 insertions, 0 deletions