kernel/linux.git/tools/testing/selftests/ftrace, branch v5.10.89

selftests/ftrace: Fix requirement check of README file

2021-09-18T11:40:07+00:00

commit 210f9df02611cbe641ced3239122b270fd907d86 upstream. The selftest for ftrace checks some features by checking if the README has text that states the feature is supported by that kernel. Unfortunately, this check gives false positives because it many not be checked if there's spaces in the string to check. This is due to the compare between the required variable with the ":README" string stripped, because neither has quotes around them. Link: https://lkml.kernel.org/r/20210820204742.087177341@goodmis.org Cc: "Tzvetomir Stoyanov" Cc: Tom Zanussi Cc: Shuah Khan Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Cc: stable@vger.kernel.org Fixes: 1b8eec510ba64 ("selftests/ftrace: Support ":README" suffix for requires") Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Greg Kroah-Hartman

selftests/ftrace: fix event-no-pid on 1-core machine

2021-07-14T14:56:49+00:00

[ Upstream commit 07b60713b57a8f952d029a2b6849d003d9c16108 ] When running event-no-pid test on small machines (e.g. cloud 1-core instance), other events might not happen: + cat trace + cnt=0 + [ 0 -eq 0 ] + fail No other events were recorded [15] event tracing - restricts events based on pid notrace filtering [FAIL] Schedule a simple sleep task to be sure that some other process events get recorded. Fixes: ebed9628f5c2 ("selftests/ftrace: Add test to test new set_event_notrace_pid file") Signed-off-by: Krzysztof Kozlowski Acked-by: Steven Rostedt (VMware) Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

selftests/ftrace: Update synthetic event syntax errors

2021-03-04T10:38:07+00:00

[ Upstream commit b5734e997e1117afb479ffda500e36fa91aea3e8 ] Some of the synthetic event errors and positions have changed in the code - update those and add several more tests. Also add a runtime check to ensure that the kernel supports dynamic strings in synthetic events, which these tests require. Link: https://lkml.kernel.org/r/51402656433455baead34f068c6e9466b64df9c0.1612208610.git.zanussi@kernel.org Fixes: 81ff92a93d95 (selftests/ftrace: Add test case for synthetic event syntax errors) Reported-by: Masami Hiramatsu Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Sasha Levin

selftests/ftrace: check for do_sys_openat2 in user-memory test

2020-10-27T22:45:51+00:00

More recent libc implementations are now using openat/openat2 system calls so also add do_sys_openat2 to the tracing so that the test passes on these systems because do_sys_open may not be called. Thanks to Masami Hiramatsu for the help on getting this fix to work correctly. Signed-off-by: Colin Ian King Acked-by: Masami Hiramatsu Acked-by: Steven Rostedt (VMware) Signed-off-by: Shuah Khan

selftests/ftrace: Use $FUNCTION_FORK to reference kernel fork function

2020-10-27T22:44:18+00:00

Commit cad6967ac108 ("fork: introduce kernel_clone()") replaced "_do_fork()" with "kernel_clone()". The ftrace selftests reference the fork function in several of the tests. The rename will make the tests break, but if those names are changed in the tests, they would then break on older kernels. The same set of tests should pass older kernels if they have previously passed. Obviously, a new test may not work on older kernels if the test was added due to a bug or a new feature. The setup of ftracetest will now create a $FUNCTION_FORK bash variable that will contain "_do_fork" for older kernels and "kernel_clone" for newer ones. It figures out the proper name by examining /proc/kallsyms. Note, available_filter_functions could also be used, but because some tests should be able to pass without function tracing enabled, it could not be used. Fixes: eea11285dab3 ("tracing: switch to kernel_clone()") Signed-off-by: Steven Rostedt (VMware) Acked-by: Masami Hiramatsu Signed-off-by: Shuah Khan

Merge tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2020-10-15T22:51:28+00:00

Pull tracing updates from Steven Rostedt: "Updates for tracing and bootconfig: - Add support for "bool" type in synthetic events - Add per instance tracing for bootconfig - Support perf-style return probe ("SYMBOL%return") in kprobes and uprobes - Allow for kprobes to be enabled earlier in boot up - Added tracepoint helper function to allow testing if tracepoints are enabled in headers - Synthetic events can now have dynamic strings (variable length) - Various fixes and cleanups" * tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (58 commits) tracing: support "bool" type in synthetic trace events selftests/ftrace: Add test case for synthetic event syntax errors tracing: Handle synthetic event array field type checking correctly selftests/ftrace: Change synthetic event name for inter-event-combined test tracing: Add synthetic event error logging tracing: Check that the synthetic event and field names are legal tracing: Move is_good_name() from trace_probe.h to trace.h tracing: Don't show dynamic string internals in synthetic event description tracing: Fix some typos in comments tracing/boot: Add ftrace.instance.*.alloc_snapshot option tracing: Fix race in trace_open and buffer resize call tracing: Check return value of __create_val_fields() before using its result tracing: Fix synthetic print fmt check for use of __get_str() tracing: Remove a pointless assignment ftrace: ftrace_global_list is renamed to ftrace_ops_list ftrace: Format variable declarations of ftrace_allocate_records ftrace: Simplify the calculation of page number for ftrace_page->records ftrace: Simplify the dyn_ftrace->flags macro ftrace: Simplify the hash calculation ftrace: Use fls() to get the bits for dup_hash() ...

selftests/ftrace: Add test case for synthetic event syntax errors

2020-10-15T16:01:13+00:00

Add a selftest that verifies that the syntax error messages and caret positions are correct for most of the possible synthetic event syntax error cases. Link: https://lkml.kernel.org/r/af611928ce79f86eaf0af8654f1d7802d5cc21ff.1602598160.git.zanussi@kernel.org Tested-by: Masami Hiramatsu Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware)

selftests/ftrace: Change synthetic event name for inter-event-combined test

2020-10-15T16:01:13+00:00

This test uses waking+wakeup_latency as an event name, which doesn't make sense since it includes an operator. Illegal names are now detected by the synthetic event command parsing, which causes this test to fail. Change the name to 'waking_plus_wakeup_latency' to prevent this. Link: https://lkml.kernel.org/r/a1ee2f76ff28ef7166fb788ca8be968887808920.1602598160.git.zanussi@kernel.org Fixes: f06eec4d0f2c (selftests: ftrace: Add inter-event hist triggers testcases) Acked-by: Masami Hiramatsu Tested-by: Masami Hiramatsu Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware)

selftests/ftrace: Add test case for synthetic event dynamic strings

2020-10-08T19:28:41+00:00

Add a selftest that defines and traces a synthetic event that uses a dynamic string event field. Link: https://lkml.kernel.org/r/74445afb005046d76d59fb06696a2ceaa164dec9.1601848695.git.zanussi@kernel.org Acked-by: Masami Hiramatsu Signed-off-by: Tom Zanussi Signed-off-by: Steven Rostedt (VMware)

selftests/ftrace: Add %return suffix tests

2020-09-22T01:06:03+00:00

Add kprobe %return suffix testcase and syntax error tests for %return suffix. Link: https://lkml.kernel.org/r/159972817653.428528.9180599115849301184.stgit@devnote2 Acked-by: Shuah Khan Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)