[LTP PATCH v4 0/5] ftrace: Convert shell tests to C

This patch series converts the ftrace shell-based tests to C
implementation using LTP's new API, addressing GitHub issue #1282.

The conversion provides:
- Better integration with LTP framework
- Improved error handling and reporting
- More maintainable code structure
- Consistent test behavior across platforms

Changes in v4:
- Fixed all trailing whitespace on blank lines in ftrace_lib.c (20+ locations)
- Corrected ftrace_regression01 commit message to accurately describe test behavior
  (tests userstacktrace with page fault events, not general function tracing)
- Corrected ftrace_regression02 commit message to describe actual test
  (verifies signal:signal_generate tracepoint fields, not function_graph tracer)
- Replaced inline tst_kvercmp() check with .min_kver = "3.2" in ftrace_regression02
- Removed incorrect LTP_TIMEOUT_MUL parsing in ftrace_stress_test setup()
- All whitespace issues verified with checkpatch.pl

Changes in v3:
- Fixed tst_tmpdir_path() usage by adding .needs_tmpdir = 1 to all tests
- Removed incorrect CVE-2015-8550 tag from ftrace_regression01
- Fixed memory leak in TST_RETRY_FUNC usage by assigning to variable and freeing
- Changed [Algorithm] sections from numbered lists to bullet points (using '-')
- Added root requirement documentation to all test doc comments
- Fixed Makefile LDLIBS placement (moved before generic_leaf_target.mk include)
- Created .gitignore for new test binaries
- Removed deprecated [Description] header from ftrace_stress_test
- Deleted orphaned shell files that were replaced by C implementations

Changes in v2:
- Fixed TST_NO_DEFAULT_MAIN placement in ftrace_lib.c (before includes)
- Removed tst_test.h include from ftrace_lib.h (libraries shouldn't include it)
- Fixed include order in test files (tst_test.h before ftrace_lib.h)
- Added proper cleanup of allocated memory in tests
- Improved error messages and test documentation
- Fixed Makefile dependencies and library filtering

Testing:
All tests have been compiled and verified to work correctly on x86_64
and ppc64le systems with various kernel versions. All whitespace issues
have been verified with checkpatch.pl.

Praveen K Pandey (5):
  ftrace: Add common library for C implementation
  ftrace: Convert ftrace_regression01.sh to C
  ftrace: Convert ftrace_regression02.sh to C
  ftrace: Convert ftrace_stress_test.sh to C
  ftrace: Remove obsolete shell test files

 runtest/tracing                               |   6 +-
 .../kernel/tracing/ftrace_test/.gitignore     |   4 +
 testcases/kernel/tracing/ftrace_test/Makefile |  19 +-
 .../kernel/tracing/ftrace_test/ftrace_lib.c   | 358 ++++++++++++++++++
 .../kernel/tracing/ftrace_test/ftrace_lib.h   | 139 +++++++
 .../kernel/tracing/ftrace_test/ftrace_lib.sh  | 180 ---------
 .../tracing/ftrace_test/ftrace_regression01.c | 128 +++++++
 .../ftrace_test/ftrace_regression01.sh        |  83 ----
 .../tracing/ftrace_test/ftrace_regression02.c | 103 +++++
 .../ftrace_test/ftrace_regression02.sh        |  63 ----
 .../ftrace_stress/ftrace_buffer_size_kb.sh    |  45 ---
 .../ftrace_stress/ftrace_current_tracer.sh    |  32 --
 .../ftrace_stress/ftrace_ftrace_enabled.sh    |  38 --
 .../ftrace_function_profile_enabled.sh        |  38 --
 .../ftrace_stress/ftrace_set_event.sh         |  46 ---
 .../ftrace_stress/ftrace_set_ftrace_filter.sh | 119 ------
 .../ftrace_stress/ftrace_set_ftrace_pid.sh    |  37 --
 .../ftrace_stress/ftrace_stack_max_size.sh    |  27 --
 .../ftrace_stress/ftrace_stack_trace.sh       |  35 --
 .../ftrace_test/ftrace_stress/ftrace_trace.sh |  25 --
 .../ftrace_stress/ftrace_trace_clock.sh       |  27 --
 .../ftrace_stress/ftrace_trace_options.sh     |  58 ---
 .../ftrace_stress/ftrace_trace_pipe.sh        |  45 ---
 .../ftrace_stress/ftrace_trace_stat.sh        |  38 --
 .../ftrace_stress/ftrace_tracing_cpumask.sh   |  91 -----
 .../ftrace_stress/ftrace_tracing_enabled.sh   |  38 --
 .../ftrace_tracing_max_latency.sh             |  27 --
 .../ftrace_stress/ftrace_tracing_on.sh        |  38 --
 .../tracing/ftrace_test/ftrace_stress_test.c  | 322 ++++++++++++++++
 .../tracing/ftrace_test/ftrace_stress_test.sh | 121 ------
 30 files changed, 1072 insertions(+), 1258 deletions(-)
 create mode 100644 testcases/kernel/tracing/ftrace_test/.gitignore
 create mode 100644 testcases/kernel/tracing/ftrace_test/ftrace_lib.c
 create mode 100644 testcases/kernel/tracing/ftrace_test/ftrace_lib.h
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_lib.sh
 create mode 100644 testcases/kernel/tracing/ftrace_test/ftrace_regression01.c
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_regression01.sh
 create mode 100644 testcases/kernel/tracing/ftrace_test/ftrace_regression02.c
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_regression02.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_buffer_size_kb.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_current_tracer.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_ftrace_enabled.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_function_profile_enabled.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_event.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_filter.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_set_ftrace_pid.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_stack_max_size.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_stack_trace.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_trace.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_trace_clock.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_trace_options.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_trace_pipe.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_trace_stat.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_cpumask.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_enabled.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_max_latency.sh
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress/ftrace_tracing_on.sh
 create mode 100644 testcases/kernel/tracing/ftrace_test/ftrace_stress_test.c
 delete mode 100755 testcases/kernel/tracing/ftrace_test/ftrace_stress_test.sh

-- 
2.50.1

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