linux-toradex.git/include/trace/trace_events.h, branch v4.12

tracing: add __print_flags_u64()

2017-02-23T00:41:26+00:00

Patch series "DAX tracepoints, mm argument simplification", v4.

This contains both my DAX tracepoint code and Dave Jiang's MM argument
simplifications.  Dave's code was written with my tracepoint code as a
baseline, so it seemed simplest to keep them together in a single series.

This patch (of 7):

Add __print_flags_u64() and the helper trace_print_flags_seq_u64() in the
same spirit as __print_symbolic_u64() and trace_print_symbols_seq_u64().
These functions allow us to print symbols associated with flags that are
64 bits wide even on 32 bit machines.

These will be used by the DAX code so that we can print the flags set in a
pfn_t such as PFN_SG_CHAIN, PFN_SG_LAST, PFN_DEV and PFN_MAP.

Without this new function I was getting errors like the following when
compiling for i386:

  include/linux/pfn_t.h:13:22: warning: large integer implicitly truncated to unsigned type [-Woverflow]
   #define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1))
    ^

Link: http://lkml.kernel.org/r/1484085142-2297-2-git-send-email-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler 
Reviewed-by: Steven Rostedt 
Cc: Dave Chinner 
Cc: Dave Jiang 
Cc: Jan Kara 
Cc: Matthew Wilcox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

trace: rename trace_print_hex_seq arg and add kdoc

2017-02-03T20:50:18+00:00

Steven suggested to improve trace_print_hex_seq() a bit after commit
2acae0d5b0f7 ("trace: add variant without spacing in trace_print_hex_seq")
in two ways: i) by adding a kdoc comment for the helper function
itself and ii) by renaming 'spacing' argument into 'concatenate'
to better denote that we don't add spaces between each hex bytes.

Suggested-by: Steven Rostedt 
Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

trace: add variant without spacing in trace_print_hex_seq

2017-01-25T18:17:47+00:00

For upcoming tracepoint support for BPF, we want to dump the program's
tag. Format should be similar to __print_hex(), but without spacing.
Add a __print_hex_str() variant for exactly that purpose that reuses
trace_print_hex_seq().

Signed-off-by: Daniel Borkmann 
Cc: Steven Rostedt 
Cc: Arnaldo Carvalho de Melo 
Signed-off-by: David S. Miller

tracing: Use outer () on __get_str() definition

2016-07-15T19:50:58+00:00

__get_str(str)'s definition includes a (char *) operator
overloading that is not protected with outer ().

This patch adds () around __get_str()'s definition, enabling
some code cleanup.

Link: http://lkml.kernel.org/r/20ac1a10c2ec4ccd23e4a8ef34101fb6e4157d37.1467407618.git.bristot@redhat.com

Cc: Trond Myklebust 
Cc: Anna Schumaker 
Cc: Ingo Molnar 
Suggested-by: Steven Rostedt 
Reviewed-by: Steven Rostedt 
Signed-off-by: Daniel Bristot de Oliveira 
Signed-off-by: Steven Rostedt

perf: remove unused __addr variable

2016-04-08T01:04:26+00:00

now all calls to perf_trace_buf_submit() pass 0 as 4th
argument which will be repurposed in the next patch which will
change the meaning of 1st arg of perf_tp_event() to event_type

Signed-off-by: Alexei Starovoitov 
Acked-by: Peter Zijlstra (Intel) 
Signed-off-by: David S. Miller

tracing: Introduce TRACE_EVENT_FN_COND macro

2015-12-23T19:27:21+00:00

TRACE_EVENT_FN can't be used in some circumstances
like invoking trace functions from offlined CPU due
to RCU usage.

This patch adds the TRACE_EVENT_FN_COND macro
to make such trace points conditional.

Link: http://lkml.kernel.org/r/1450124286-4822-1-git-send-email-kda@linux-powerpc.org

Signed-off-by: Denis Kirjanov 
Signed-off-by: Steven Rostedt

tracing: Move non perf code out of perf.h

2015-09-23T13:31:34+00:00

Commit ee53bbd17257 "tracing: Move the perf code out of trace_event.h" moved
more than just the perf code out of trace_event.h, but also removed a bit of
the tracing code too. Move it back.

Signed-off-by: Steven Rostedt

tracing: Rename ftrace_get_offsets_##call() to trace_event_get_offsets_##call()

2015-05-14T01:49:01+00:00

The name "ftrace" really refers to the function hook infrastructure. It
is not about the trace_events. The function ftrace_get_offsets_##call()
is used to find the offset into dynamically allocated trace event fields
for printing. It has nothing to do with function tracing. Rename it.

Signed-off-by: Steven Rostedt

tracing: Rename ftrace_define_fields_##call() to trace_event_define_fields_##call()

2015-05-14T01:49:00+00:00

The name "ftrace" really refers to the function hook infrastructure. It
is not about the trace_events. The function ftrace_define_fields_##call()
is used to define how to process the trace_event fields. It has nothing to
do with function tracing. Rename it.

Signed-off-by: Steven Rostedt

tracing: Rename ftrace_event_type_funcs_##call to trace_event_type_funcs_##call

2015-05-14T01:48:59+00:00

The name "ftrace" really refers to the function hook infrastructure. It
is not about the trace_events. The structure ftrace_event_type_funcs_##call
is used to define how the trace_events will be printed. It has nothing to
do with function tracing. Rename it.

Signed-off-by: Steven Rostedt