From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Carles Pey <carles.pey@gmail.com>
Subject: [for-next][PATCH 14/40] ftrace: Add unit test for removing trace function
Date: Fri, 22 Oct 2021 16:48:10 -0400 [thread overview]
Message-ID: <20211022204840.647993536@goodmis.org> (raw)
In-Reply-To: <20211022204756.099054287@goodmis.org>
From: Carles Pey <carles.pey@gmail.com>
A self test is provided for the trace function removal functionality.
Link: https://lkml.kernel.org/r/20210918153043.318016-2-carles.pey@gmail.com
Signed-off-by: Carles Pey <carles.pey@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace_selftest.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index adf7ef194005..875b4f1a0476 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -287,6 +287,40 @@ static int trace_selftest_ops(struct trace_array *tr, int cnt)
if (trace_selftest_test_probe3_cnt != 4)
goto out_free;
+ /* Remove trace function from probe 3 */
+ func1_name = "!" __stringify(DYN_FTRACE_TEST_NAME);
+ len1 = strlen(func1_name);
+
+ ftrace_set_filter(&test_probe3, func1_name, len1, 0);
+
+ DYN_FTRACE_TEST_NAME();
+
+ print_counts();
+
+ if (trace_selftest_test_probe1_cnt != 3)
+ goto out_free;
+ if (trace_selftest_test_probe2_cnt != 2)
+ goto out_free;
+ if (trace_selftest_test_probe3_cnt != 4)
+ goto out_free;
+ if (cnt > 1) {
+ if (trace_selftest_test_global_cnt == 0)
+ goto out_free;
+ }
+ if (trace_selftest_test_dyn_cnt == 0)
+ goto out_free;
+
+ DYN_FTRACE_TEST_NAME2();
+
+ print_counts();
+
+ if (trace_selftest_test_probe1_cnt != 3)
+ goto out_free;
+ if (trace_selftest_test_probe2_cnt != 3)
+ goto out_free;
+ if (trace_selftest_test_probe3_cnt != 5)
+ goto out_free;
+
ret = 0;
out_free:
unregister_ftrace_function(dyn_ops);
--
2.33.0
next prev parent reply other threads:[~2021-10-22 20:49 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-22 20:47 [for-next][PATCH 00/40] tracing: Updates for 5.16 Steven Rostedt
2021-10-22 20:47 ` [for-next][PATCH 01/40] tracing: Initialize upper and lower vars in pid_list_refill_irq() Steven Rostedt
2021-10-22 20:47 ` [for-next][PATCH 02/40] tracefs: Have tracefs directories not set OTH permission bits by default Steven Rostedt
2021-10-22 20:47 ` [for-next][PATCH 03/40] tracing: Disable "other" permission bits in the tracefs files Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 04/40] ftrace: Cleanup ftrace_dyn_arch_init() Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 05/40] bootconfig: Allocate xbc_data inside xbc_init() Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 06/40] bootconfig: Add xbc_get_info() for the node information Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 07/40] tools/bootconfig: Run test script when build all Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 08/40] bootconfig: Rename xbc_destroy_all() to xbc_exit() Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 09/40] bootconfig: Split parse-tree part from xbc_init Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 10/40] bootconfig: Remove unused debug function Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 11/40] tools/bootconfig: Print all error message in stderr Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 12/40] bootconfig: Replace u16 and u32 with uint16_t and uint32_t Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 13/40] bootconfig: Cleanup dummy headers in tools/bootconfig Steven Rostedt
2021-10-22 20:48 ` Steven Rostedt [this message]
2021-10-22 20:48 ` [for-next][PATCH 15/40] tracing: in_irq() cleanup Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 16/40] tracing: Use linker magic instead of recasting ftrace_ops_list_func() Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 17/40] tracing/cfi: Fix cmp_entries_* functions signature mismatch Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 18/40] tracing: Reuse logic from perfs get_recursion_context() Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 19/40] tracing/perf: Add interrupt_context_level() helper Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 20/40] x86/ftrace: Remove extra orig rax move Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 21/40] x86/ftrace: Remove fault protection code in prepare_ftrace_return Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 22/40] ftrace/x86_64: Have function graph tracer depend on DYNAMIC_FTRACE Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 23/40] x86/ftrace: Make function graph use ftrace directly Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 24/40] tracing: Add trampoline/graph selftest Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 25/40] tracing: Fix selftest config check for function graph start up test Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 26/40] ftrace: Add ftrace_add_rec_direct function Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 27/40] ftrace: Add multi direct register/unregister interface Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 28/40] ftrace: Add multi direct modify interface Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 29/40] ftrace/samples: Add multi direct interface test module Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 30/40] ftrace/direct: Do not disable when switching direct callers Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 31/40] tracing: Explain the trace recursion transition bit better Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 32/40] tracing: use %ps format string to print symbols Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 33/40] kprobes: convert tests to kunit Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 34/40] x86/unwind: Compile kretprobe fixup code only if CONFIG_KRETPROBES=y Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 35/40] arm64: kprobes: Record frame pointer with kretprobe instance Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 36/40] arm64: kprobes: Make a frame pointer on __kretprobe_trampoline Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 37/40] arm64: Recover kretprobe modified return address in stacktrace Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 38/40] ARM: clang: Do not rely on lr register for stacktrace Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 39/40] ARM: kprobes: Make a frame pointer on __kretprobe_trampoline Steven Rostedt
2021-10-22 20:48 ` [for-next][PATCH 40/40] ARM: Recover kretprobe modified return address in stacktrace Steven Rostedt
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