linux.git/tools/bootconfig, branch v5.10-rc2 Linux kernel source tree 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 Linus Torvalds torvalds@linux-foundation.org 2020-10-15T22:51:28+00:00 fefa636d815975b34afc45f50852a2810fb23ba9 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() ... 
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()
  ...
tools/bootconfig: Add testcase for tailing space 2020-09-22T01:57:12+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-09-21T09:45:11+00:00 2f5fb555637eff4a3e5579f2323cd358c77efdc8 Add testcases for removing/keeping tailing space in the value. Link: https://lkml.kernel.org/r/160068151151.1088739.3469541807296024227.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add testcases for removing/keeping tailing space
in the value.

Link: https://lkml.kernel.org/r/160068151151.1088739.3469541807296024227.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add testcases for repeated key with brace 2020-09-22T01:56:55+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-09-21T09:45:02+00:00 1d210c166b693c3a659abbac4b58385c2d4cf887 Add a testcase for repeated key with brace parsing issue. Link: https://lkml.kernel.org/r/160068150176.1088739.409481347784771987.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add a testcase for repeated key with brace parsing issue.

Link: https://lkml.kernel.org/r/160068150176.1088739.409481347784771987.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add --init option for bconf2ftrace.sh 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:35:32+00:00 5675fd4ef51f0b505a7f802e4d23a37336d521f0 Since the ftrace current setting may conflict with the new setting from bootconfig, add the --init option to initialize ftrace before setting for bconf2ftrace.sh. E.g. $ bconf2ftrace.sh --init boottrace.bconf This initialization method copied from selftests/ftrace. Link: https://lkml.kernel.org/r/159704853203.175360.17029578033994278231.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Since the ftrace current setting may conflict with the new setting
from bootconfig, add the --init option to initialize ftrace before
setting for bconf2ftrace.sh.

E.g.
 $ bconf2ftrace.sh --init boottrace.bconf

This initialization method copied from selftests/ftrace.

Link: https://lkml.kernel.org/r/159704853203.175360.17029578033994278231.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add a script to generates bootconfig from ftrace 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:35:21+00:00 2b86062a34a81427fca082540e3593b5a6b49a13 Add a ftrace2bconf.sh under tools/bootconfig/scripts which generates a bootconfig file from the current ftrace settings. To read the ftrace settings, ftrace2bconf.sh requires the root privilege (or sudo). The ftrace2bconf.sh will output the bootconfig to stdout and error messages to stderr, so usually you'll run it as # ftrace2bconf.sh > ftrace.bconf Note that some ftrace configurations are not supported. For example, function-call/callgraph trace/notrace settings are not supported because the wildcard has been expanded and lost in the ftrace anymore. Link: https://lkml.kernel.org/r/159704852163.175360.16738029520293360558.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add a ftrace2bconf.sh under tools/bootconfig/scripts which generates
a bootconfig file from the current ftrace settings.

To read the ftrace settings, ftrace2bconf.sh requires the root
privilege (or sudo). The ftrace2bconf.sh will output the bootconfig
to stdout and error messages to stderr, so usually you'll run it as

 # ftrace2bconf.sh > ftrace.bconf

Note that some ftrace configurations are not supported. For example,
function-call/callgraph trace/notrace settings are not supported because
the wildcard has been expanded and lost in the ftrace anymore.

Link: https://lkml.kernel.org/r/159704852163.175360.16738029520293360558.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add a script to generate ftrace shell-command from bootconfig 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:35:11+00:00 7e66ef0046ccf896674955b819c27c49783a4deb Add a bconf2ftrace.sh under tools/bootconfig/scripts which generates a shell script to setup boot-time trace from bootconfig file for testing the bootconfig. bconf2ftrace.sh will take a bootconfig file (includes boot-time tracing) and convert it into a shell-script which is almost same as the boot-time tracer does. If --apply option is given, it also tries to apply those command to the running kernel, which requires the root privilege (or sudo). For example, if you just want to confirm the shell commands, save the output as below. # bconf2ftrace.sh ftrace.bconf > ftrace.sh Or, you can apply it directly. # bconf2ftrace.sh --apply ftrace.bconf Note that some boot-time tracing parameters under kernel.* are not able to set via tracefs nor procfs (e.g. tp_printk, traceoff_on_warning.), so those are ignored. Link: https://lkml.kernel.org/r/159704851101.175360.15119132351139842345.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add a bconf2ftrace.sh under tools/bootconfig/scripts which generates
a shell script to setup boot-time trace from bootconfig file for testing
the bootconfig.

bconf2ftrace.sh will take a bootconfig file (includes boot-time tracing)
and convert it into a shell-script which is almost same as the boot-time
tracer does.
If --apply option is given, it also tries to apply those command to the
running kernel, which requires the root privilege (or sudo).

For example, if you just want to confirm the shell commands, save
the output as below.

 # bconf2ftrace.sh ftrace.bconf > ftrace.sh

Or, you can apply it directly.

 # bconf2ftrace.sh --apply ftrace.bconf

Note that some boot-time tracing parameters under kernel.* are not able
to set via tracefs nor procfs (e.g. tp_printk, traceoff_on_warning.),
so those are ignored.

Link: https://lkml.kernel.org/r/159704851101.175360.15119132351139842345.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Make all functions static 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:35:01+00:00 483ce6708dce7116ef2c83b36a1cfe28a36c4fc9 Make all functions static except for main(). This is just a cleanup. Link: https://lkml.kernel.org/r/159704850135.175360.12465608936326167517.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Make all functions static except for main(). This is just a cleanup.

Link: https://lkml.kernel.org/r/159704850135.175360.12465608936326167517.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add list option 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:34:51+00:00 e4f70b7badb40598ceea31c122d7c2fb6203672a Add list option (-l) to show the bootconfig in the list style. This is same output of /proc/bootconfig. So users can check how their bootconfig will be shown in procfs. This will help them to write a user-space script to parse the /proc/bootconfig. Link: https://lkml.kernel.org/r/159704849087.175360.8761890802048625207.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add list option (-l) to show the bootconfig in the list style.
This is same output of /proc/bootconfig. So users can check
how their bootconfig will be shown in procfs. This will help
them to write a user-space script to parse the /proc/bootconfig.

Link: https://lkml.kernel.org/r/159704849087.175360.8761890802048625207.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Show bootconfig compact tree from bootconfig file 2020-09-19T02:17:13+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-08-10T08:34:41+00:00 d052e1c6909f9ccbdc4112a50796afca19094229 Show the bootconfig compact tree from the bootconfig file instead of an initrd if the given file has no magic number and is smaller than 32KB. User can use this for checking the syntax error or output checking before applying the bootconfig to initrd. Link: https://lkml.kernel.org/r/159704848156.175360.6621139371000789360.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Show the bootconfig compact tree from the bootconfig file
instead of an initrd if the given file has no magic number
and is smaller than 32KB.

User can use this for checking the syntax error or output
checking before applying the bootconfig to initrd.

Link: https://lkml.kernel.org/r/159704848156.175360.6621139371000789360.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
tools/bootconfig: Add testcases for value override operator 2020-08-03T20:22:29+00:00 Masami Hiramatsu mhiramat@kernel.org 2020-07-15T16:00:38+00:00 81464192839de0b5bc84c5739381101e04d94f62 Add some testcases and examples for value override operator. Link: https://lkml.kernel.org/r/159482883824.126704.2166030493721357163.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 
Add some testcases and examples for value override operator.

Link: https://lkml.kernel.org/r/159482883824.126704.2166030493721357163.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>