linux-kernel - [for-next][PATCH 00/27] function_graph: Allow multiple users for v6.11

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Date: Tue, 04 Jun 2024 10:41:03 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>
Subject: [for-next][PATCH 00/27] function_graph: Allow multiple users for v6.11

  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
fgraph/for-next

Head SHA1: 8d4e21bd4cca8013d2c6f55d42df85838d4ebce6


Masami Hiramatsu (Google) (3):
      function_graph: Handle tail calls for stack unwinding
      function_graph: Use a simple LRU for fgraph_array index number
      ftrace: Add multiple fgraph storage selftest

Steven Rostedt (Google) (9):
      ftrace: Add subops logic to allow one ops to manage many
      ftrace: Allow subops filtering to be modified
      function_graph: Add pid tracing back to function graph tracer
      function_graph: Use for_each_set_bit() in __ftrace_return_to_handler()
      function_graph: Use bitmask to loop on fgraph entry
      function_graph: Use static_call and branch to optimize entry function
      function_graph: Use static_call and branch to optimize return function
      selftests/ftrace: Add function_graph tracer to func-filter-pid test
      selftests/ftrace: Add fgraph-multi.tc test

Steven Rostedt (VMware) (15):
      function_graph: Convert ret_stack to a series of longs
      fgraph: Use BUILD_BUG_ON() to make sure we have structures divisible by long
      function_graph: Add an array structure that will allow multiple callbacks
      function_graph: Allow multiple users to attach to function graph
      function_graph: Remove logic around ftrace_graph_entry and return
      ftrace/function_graph: Pass fgraph_ops to function graph callbacks
      ftrace: Allow function_graph tracer to be enabled in instances
      ftrace: Allow ftrace startup flags to exist without dynamic ftrace
      function_graph: Have the instances use their own ftrace_ops for filtering
      function_graph: Add "task variables" per task for fgraph_ops
      function_graph: Move set_graph_function tests to shadow stack global var
      function_graph: Move graph depth stored data to shadow stack global var
      function_graph: Move graph notrace bit to shadow stack global var
      function_graph: Implement fgraph_reserve_data() and fgraph_retrieve_data()
      function_graph: Add selftest for passing local variables

----
 include/linux/ftrace.h                             |   43 +-
 include/linux/sched.h                              |    2 +-
 include/linux/trace_recursion.h                    |   39 -
 kernel/trace/fgraph.c                              | 1044 ++++++++++++++++----
 kernel/trace/ftrace.c                              |  522 +++++++++-
 kernel/trace/ftrace_internal.h                     |    5 +-
 kernel/trace/trace.h                               |   94 +-
 kernel/trace/trace_functions.c                     |    8 +
 kernel/trace/trace_functions_graph.c               |   96 +-
 kernel/trace/trace_irqsoff.c                       |   10 +-
 kernel/trace/trace_sched_wakeup.c                  |   10 +-
 kernel/trace/trace_selftest.c                      |  259 ++++-
 .../selftests/ftrace/test.d/ftrace/fgraph-multi.tc |  103 ++
 .../ftrace/test.d/ftrace/func-filter-pid.tc        |   27 +-
 14 files changed, 1945 insertions(+), 317 deletions(-)
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi.tc