linux-kernel - [PATCH 0/7] tracing: Hist trigger var-ref cleanup and comments

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Date:   Tue, 18 Dec 2018 14:33:19 -0600
From:   Tom Zanussi <zanussi@...nel.org>
To:     rostedt@...dmis.org
Cc:     tglx@...utronix.de, mhiramat@...nel.org, namhyung@...nel.org,
        vedang.patel@...el.com, bigeasy@...utronix.de,
        joel@...lfernandes.org, mathieu.desnoyers@...icios.com,
        julia@...com, linux-kernel@...r.kernel.org,
        linux-rt-users@...r.kernel.org
Subject: [PATCH 0/7] tracing: Hist trigger var-ref cleanup and comments

From: Tom Zanussi <tom.zanussi@...ux.intel.com>

Hi,

This patchset is a standalone series broken out of the v8 version of
the 'tracing: Hist trigger snapshot and onchange additions' patchset.

It's a series of changes resulting from some suggestions from Namhyung
for making the variable-reference handling code more understandable
through some refactoring and comments.

It also added a new patch changing all strlen() to sizeof() for string
constants, in trace_events_hist.c

Also, in the 'tracing: Remove open-coding of hist trigger var_ref
management' patch, in create_var_ref(), moved the saving of ref_field
and update of ref_field->var_ref_idx into the 'if' as pointed out by
Dan Carpenter/smatch 0-day robot.

It doesn't introduce any functional changes and can be applied
independently of the other patchset.

Tom

The following changes since commit 5d6ddf6acce68d1290112cb08b12fd78b201e7d5:

  arm64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack (2018-12-08 22:21:31 -0500)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git ftrace/hist-var-ref-cleanup-v1

Tom Zanussi (7):
  tracing: Remove unnecessary hist trigger struct field
  tracing: Change strlen to sizeof for hist trigger static strings
  tracing: Use var_refs[] for hist trigger reference checking
  tracing: Remove open-coding of hist trigger var_ref management
  tracing: Use hist trigger's var_ref array to destroy var_refs
  tracing: Remove hist trigger synth_var_refs
  tracing: Add hist trigger comments for variable-related fields

 kernel/trace/trace_events_hist.c | 267 +++++++++++++++++++++++----------------
 1 file changed, 156 insertions(+), 111 deletions(-)

-- 
2.14.1