[v1] tracing: probes: Use heap instead of stack for temporary buffers

[PATCH 0/5] tracing: probes: Use heap instead of stack for temporary buffers

Masami Hiramatsu (Google) posted 5 patches 2 months, 2 weeks ago

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kernel/trace/trace_eprobe.c |   38 +++++++++++++++++++++++--------
kernel/trace/trace_fprobe.c |   52 ++++++++++++++++++++++++++++---------------
kernel/trace/trace_kprobe.c |   49 ++++++++++++++++++++++++++---------------
kernel/trace/trace_probe.h  |    9 +++++++
kernel/trace/trace_uprobe.c |   37 ++++++++++++++++++++++---------
5 files changed, 129 insertions(+), 56 deletions(-)

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[PATCH 0/5] tracing: probes: Use heap instead of stack for temporary buffers

Posted by Masami Hiramatsu (Google) 2 months, 2 weeks ago

Hi,

Here is a series of cleanup patches which allocate temporary buffers
and objects on heap (slab) instead of the stack. This reduces a
possibility of stack overflow. This may reduce the performance but
the modified path is not a hot path.

---

Masami Hiramatsu (Google) (5):
      tracing: probe: Allocate traceprobe_parse_context from heap
      tracing: fprobe-event: Allocate string buffers from heap
      tracing: kprobe-event: Allocate string buffers from heap
      tracing: eprobe-event: Allocate string buffers from heap
      tracing: uprobe-event: Allocate string buffers from heap


 kernel/trace/trace_eprobe.c |   38 +++++++++++++++++++++++--------
 kernel/trace/trace_fprobe.c |   52 ++++++++++++++++++++++++++++---------------
 kernel/trace/trace_kprobe.c |   49 ++++++++++++++++++++++++++---------------
 kernel/trace/trace_probe.h  |    9 +++++++
 kernel/trace/trace_uprobe.c |   37 ++++++++++++++++++++++---------
 5 files changed, 129 insertions(+), 56 deletions(-)

--
Masami Hiramatsu (Google) <mhiramat@kernel.org>