diff options
Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 168 |
1 files changed, 84 insertions, 84 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 2014056682f5..91e885194dbc 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -141,6 +141,15 @@ menuconfig FTRACE if FTRACE +config BOOTTIME_TRACING + bool "Boot-time Tracing support" + depends on BOOT_CONFIG && TRACING + default y + help + Enable developer to setup ftrace subsystem via supplemental + kernel cmdline at boot time for debugging (tracing) driver + initialization and boot process. + config FUNCTION_TRACER bool "Kernel Function Tracer" depends on HAVE_FUNCTION_TRACER @@ -605,41 +614,6 @@ config FTRACE_MCOUNT_RECORD depends on DYNAMIC_FTRACE depends on HAVE_FTRACE_MCOUNT_RECORD -config FTRACE_SELFTEST - bool - -config FTRACE_STARTUP_TEST - bool "Perform a startup test on ftrace" - depends on GENERIC_TRACER - select FTRACE_SELFTEST - help - This option performs a series of startup tests on ftrace. On bootup - a series of tests are made to verify that the tracer is - functioning properly. It will do tests on all the configured - tracers of ftrace. - -config EVENT_TRACE_STARTUP_TEST - bool "Run selftest on trace events" - depends on FTRACE_STARTUP_TEST - default y - help - This option performs a test on all trace events in the system. - It basically just enables each event and runs some code that - will trigger events (not necessarily the event it enables) - This may take some time run as there are a lot of events. - -config EVENT_TRACE_TEST_SYSCALLS - bool "Run selftest on syscall events" - depends on EVENT_TRACE_STARTUP_TEST - help - This option will also enable testing every syscall event. - It only enables the event and disables it and runs various loads - with the event enabled. This adds a bit more time for kernel boot - up since it runs this on every system call defined. - - TBD - enable a way to actually call the syscalls as we test their - events - config TRACING_MAP bool depends on ARCH_HAVE_NMI_SAFE_CMPXCHG @@ -726,6 +700,81 @@ config RING_BUFFER_BENCHMARK If unsure, say N. +config TRACE_EVAL_MAP_FILE + bool "Show eval mappings for trace events" + depends on TRACING + help + The "print fmt" of the trace events will show the enum/sizeof names + instead of their values. This can cause problems for user space tools + that use this string to parse the raw data as user space does not know + how to convert the string to its value. + + To fix this, there's a special macro in the kernel that can be used + to convert an enum/sizeof into its value. If this macro is used, then + the print fmt strings will be converted to their values. + + If something does not get converted properly, this option can be + used to show what enums/sizeof the kernel tried to convert. + + This option is for debugging the conversions. A file is created + in the tracing directory called "eval_map" that will show the + names matched with their values and what trace event system they + belong too. + + Normally, the mapping of the strings to values will be freed after + boot up or module load. With this option, they will not be freed, as + they are needed for the "eval_map" file. Enabling this option will + increase the memory footprint of the running kernel. + + If unsure, say N. + +config GCOV_PROFILE_FTRACE + bool "Enable GCOV profiling on ftrace subsystem" + depends on GCOV_KERNEL + help + Enable GCOV profiling on ftrace subsystem for checking + which functions/lines are tested. + + If unsure, say N. + + Note that on a kernel compiled with this config, ftrace will + run significantly slower. + +config FTRACE_SELFTEST + bool + +config FTRACE_STARTUP_TEST + bool "Perform a startup test on ftrace" + depends on GENERIC_TRACER + select FTRACE_SELFTEST + help + This option performs a series of startup tests on ftrace. On bootup + a series of tests are made to verify that the tracer is + functioning properly. It will do tests on all the configured + tracers of ftrace. + +config EVENT_TRACE_STARTUP_TEST + bool "Run selftest on trace events" + depends on FTRACE_STARTUP_TEST + default y + help + This option performs a test on all trace events in the system. + It basically just enables each event and runs some code that + will trigger events (not necessarily the event it enables) + This may take some time run as there are a lot of events. + +config EVENT_TRACE_TEST_SYSCALLS + bool "Run selftest on syscall events" + depends on EVENT_TRACE_STARTUP_TEST + help + This option will also enable testing every syscall event. + It only enables the event and disables it and runs various loads + with the event enabled. This adds a bit more time for kernel boot + up since it runs this on every system call defined. + + TBD - enable a way to actually call the syscalls as we test their + events + config RING_BUFFER_STARTUP_TEST bool "Ring buffer startup self test" depends on RING_BUFFER @@ -799,55 +848,6 @@ config KPROBE_EVENT_GEN_TEST If unsure, say N. -config TRACE_EVAL_MAP_FILE - bool "Show eval mappings for trace events" - depends on TRACING - help - The "print fmt" of the trace events will show the enum/sizeof names - instead of their values. This can cause problems for user space tools - that use this string to parse the raw data as user space does not know - how to convert the string to its value. - - To fix this, there's a special macro in the kernel that can be used - to convert an enum/sizeof into its value. If this macro is used, then - the print fmt strings will be converted to their values. - - If something does not get converted properly, this option can be - used to show what enums/sizeof the kernel tried to convert. - - This option is for debugging the conversions. A file is created - in the tracing directory called "eval_map" that will show the - names matched with their values and what trace event system they - belong too. - - Normally, the mapping of the strings to values will be freed after - boot up or module load. With this option, they will not be freed, as - they are needed for the "eval_map" file. Enabling this option will - increase the memory footprint of the running kernel. - - If unsure, say N. - -config GCOV_PROFILE_FTRACE - bool "Enable GCOV profiling on ftrace subsystem" - depends on GCOV_KERNEL - help - Enable GCOV profiling on ftrace subsystem for checking - which functions/lines are tested. - - If unsure, say N. - - Note that on a kernel compiled with this config, ftrace will - run significantly slower. - -config BOOTTIME_TRACING - bool "Boot-time Tracing support" - depends on BOOT_CONFIG && TRACING - default y - help - Enable developer to setup ftrace subsystem via supplemental - kernel cmdline at boot time for debugging (tracing) driver - initialization and boot process. - endif # FTRACE endif # TRACING_SUPPORT |