- 27 Aug, 2009 1 commit
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Masami Hiramatsu authored
Add kprobes-based event tracer on ftrace. This tracer is similar to the events tracer which is based on Tracepoint infrastructure. Instead of Tracepoint, this tracer is based on kprobes (kprobe and kretprobe). It probes anywhere where kprobes can probe(this means, all functions body except for __kprobes functions). Similar to the events tracer, this tracer doesn't need to be activated via current_tracer, instead of that, just set probe points via /sys/kernel/debug/tracing/kprobe_events. And you can set filters on each probe events via /sys/kernel/debug/tracing/events/kprobes/<EVENT>/filter. This tracer supports following probe arguments for each probe. %REG : Fetch register REG sN : Fetch Nth entry of stack (N >= 0) sa : Fetch stack address. @ADDR : Fetch memory at ADDR (ADDR should be in kernel) @SYM[+|-offs] : Fetch memory at SYM +|- offs (SYM should be a data symbol) aN : Fetch function argument. (N >= 0) rv : Fetch return value. ra : Fetch return address. +|-offs(FETCHARG) : fetch memory at FETCHARG +|- offs address. See Documentation/trace/kprobetrace.txt in the next patch for details. Changes from v13: - Support 'sa' for stack address. - Use call->data instead of container_of() macro. [fweisbec@gmail.com: Fixed conflict against latest tracing/core] Signed-off-by:
Masami Hiramatsu <mhiramat@redhat.com> Acked-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090813203510.31965.29123.stgit@localhost.localdomain> Signed-off-by:
Frederic Weisbecker <fweisbec@gmail.com>
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- 26 Aug, 2009 16 commits
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Masami Hiramatsu authored
Use TRACE_FIELD_ZERO(type, item) instead of TRACE_FIELD_ZERO_CHAR(item). This also includes a typo fix of TRACE_ZERO_CHAR() macro. Signed-off-by:
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Masami Hiramatsu authored
Add dynamic ftrace_event_call support to ftrace. Trace engines can add new ftrace_event_call to ftrace on the fly. Each operator function of the call takes an ftrace_event_call data structure as an argument, because these functions may be shared among several ftrace_event_calls. Changes from v13: - Define remove_subsystem_dir() always (revirt a2ca5e03), because trace_remove_event_call() uses it. - Modify syscall tracer because of ftrace_event_call change. [fweisbec@gmail.com: Fixed conflict against latest tracing/core] Signed-off-by:
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Masami Hiramatsu authored
Add following APIs for accessing registers and stack entries from pt_regs. These APIs are required by kprobes-based event tracer on ftrace. Some other debugging tools might be able to use it too. - regs_query_register_offset(const char *name) Query the offset of "name" register. - regs_query_register_name(unsigned int offset) Query the name of register by its offset. - regs_get_register(struct pt_regs *regs, unsigned int offset) Get the value of a register by its offset. - regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr) Check the address is in the kernel stack. - regs_get_kernel_stack_nth(struct pt_regs *reg, unsigned int nth) Get Nth entry of the kernel stack. (N >= 0) - regs_get_argument_nth(struct pt_regs *reg, unsigned int nth) Get Nth argument at function call. (N >= 0) Signed-off-by:
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Masami Hiramatsu authored
Cleanup fix_riprel() in arch/x86/kernel/kprobes.c by using the new x86 instruction decoder instead of using comparisons with raw ad hoc numeric opcodes. Signed-off-by:
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Masami Hiramatsu authored
Ensure safeness of inserting kprobes by checking whether the specified address is at the first byte of an instruction on x86. This is done by decoding probed function from its head to the probe point. Signed-off-by:
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Masami Hiramatsu authored
Add a user-space selftest of x86 instruction decoder at kernel build time. When CONFIG_X86_DECODER_SELFTEST=y, Kbuild builds a test harness of x86 instruction decoder and performs it after building vmlinux. The test compares the results of objdump and x86 instruction decoder code and check there are no differences. Signed-off-by:
Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090813203421.31965.29006.stgit@localhost.localdomain> Signed-off-by:
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Masami Hiramatsu authored
Add x86 instruction decoder to arch-specific libraries. This decoder can decode x86 instructions used in kernel into prefix, opcode, modrm, sib, displacement and immediates. This can also show the length of instructions. This version introduces instruction attributes for decoding instructions. The instruction attribute tables are generated from the opcode map file (x86-opcode-map.txt) by the generator script(gen-insn-attr-x86.awk). Currently, the opcode maps are based on opcode maps in Intel(R) 64 and IA-32 Architectures Software Developers Manual Vol.2: Appendix.A, and consist of below two types of opcode tables. 1-byte/2-bytes/3-bytes opcodes, which has 256 elements, are written as below; Table: table-name Referrer: escaped-name opcode: mnemonic|GrpXXX [operand1[,operand2...]] [(extra1)[,(extra2)...] [| 2nd-mnemonic ...] (or) opcode: escape # escaped-name EndTable Group opcodes, which has 8 elements, are written as below; GrpTable: GrpXXX reg: mnemonic [operand1[,operand2...]] [(extra1)[,(extra2)...] [| 2nd-mnemonic ...] EndTable These opcode maps include a few SSE and FP opcodes (for setup), because those opcodes are used in the kernel. Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090813203413.31965.49709.stgit@localhost.localdomain> Signed-off-by:
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Ingo Molnar authored
Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core Conflicts: include/linux/tracepoint.h Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Steven Rostedt authored
The commit: commit 5ac35daa Author: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> tracing/events: fix the include file dependencies Moved the TRACE_EVENT out of the ifdef protection of tracepoints.h but uses the define of TRACE_EVENT itself as protection. This patch adds comments to explain why. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org>
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Xiao Guangrong authored
The TRACE_EVENT depends on the include/linux/tracepoint.h first and include/trace/ftrace.h later, if we include the ftrace.h early, a building error will occur. Both define TRACE_EVENT in trace_a.h and trace_b.h, if we include those in .c file, like this: #define CREATE_TRACE_POINTS include <trace/events/trace_a.h> include <trace/events/trace_b.h> The above will not work, because the TRACE_EVENT was re-defined by the previous .h file. Reported-by:
Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> LKML-Reference: <4A937F5E.3020802@cn.fujitsu.com> Signed-off-by:
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Zhaolei authored
There are many clock sources for the tracing system but we can only enable/disable one at a time with the trace/options file. We can move the setting of clock-source out of options and add a separate file for it: # cat trace_clock [local] global # echo global > trace_clock # cat trace_clock local [global] Signed-off-by:
Zhao Lei <zhaolei@cn.fujitsu.com> LKML-Reference: <4A939D08.6050604@cn.fujitsu.com> Signed-off-by:
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Li Zefan authored
Usually, char * entries are dangerous in traces because the string can be released whereas a pointer to it can still wait to be read from the ring buffer. But sometimes we can assume it's safe, like in case of RO data (eg: __file__ or __line__, used in bkl trace event). If these RO data are in a module and so is the call to the trace event, then it's safe, because the ring buffer will be flushed once this module get unloaded. To allow char * to be treated as a string: TRACE_EVENT(..., TP_STRUCT__entry( __field_ext(const char *, name, FILTER_PTR_STRING) ... ) ... ); The filtering will not dereference "char *" unless the developer explicitly sets FILTER_PTR_STR in __field_ext. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4A7B9287.90205@cn.fujitsu.com> Signed-off-by:
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Li Zefan authored
Add __field_ext(), so a field can be assigned to a specific filter_type, which matches a corresponding filter function. For example, a later patch will allow this: __field_ext(const char *, str, FILTER_PTR_STR); Signed-off-by:
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Li Zefan authored
The type of a field is stored as a string in @type, and here we add @filter_type which is an enum value. This prepares for later patches, so we can specifically assign different @filter_type for the same @type. For example normally a "char *" field is treated as a ptr, but we may want it to be treated as a string when doing filting. Signed-off-by:
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Josh Triplett authored
function_graph traces look like nested function calls, complete with braces denoting the start and end of functions. function-graph-fold.vim teaches vim how to fold these functions, to make it more convenient to browse them. To use, :source function-graph-fold.vim while viewing a function_graph trace, or use "view -S function-graph-fold.vim some-trace" to load it from the command-line together with a trace. You can then use the usual vim fold commands, such as "za", to open and close nested functions. While closed, a fold will show the total time taken for a call, as would normally appear on the line with the closing brace. Folded functions will not include finish_task_switch(), so folding should remain relatively sane even through a context switch. Note that this will almost certainly only work well with a single-CPU trace (e.g. trace-cmd report --cpu 1). It also takes some time to run (a few seconds for a large trace on my laptop). Nevertheless, I found it very handy to get an overview of a trace and then drill down on problematic calls. Signed-off-by:
Josh Triplett <josh@joshtriplett.org> LKML-Reference: <20090806145701.GB7661@feather> Signed-off-by:
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Steven Rostedt authored
While debugging the scheduler push / pull algorithm, I found it very annoying that the sched wake up events did not show the CPU that the task was waking on. In order to analyze the scheduler, I needed that information. This patch adds recording of the CPU that a task is waking up on. Signed-off-by:
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- 25 Aug, 2009 5 commits
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Josh Stone authored
This converts the syscall_enter/exit tracepoints into TRACE_EVENTs, so you can have generic ftrace events that capture all system calls with arguments and return values. These generic events are also renamed to sys_enter/exit, so they're more closely aligned to the specific sys_enter_foo events. Signed-off-by:
Josh Stone <jistone@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> LKML-Reference: <1251150194-1713-5-git-send-email-jistone@redhat.com> Signed-off-by:
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Josh Stone authored
It's not strictly correct for the tracepoint reg/unreg callbacks to occur when a client is hooking up, because the actual tracepoint may not be present yet. This happens to be fine for syscall, since that's in the core kernel, but it would cause problems for tracepoints defined in a module that hasn't been loaded yet. It also means the reg/unreg has to be EXPORTed for any modules to use the tracepoint (as in SystemTap). This patch removes DECLARE_TRACE_WITH_CALLBACK, and instead introduces DEFINE_TRACE_FN which stores the callbacks in struct tracepoint. The callbacks are used now when the active state of the tracepoint changes in set_tracepoint & disable_tracepoint. This also introduces TRACE_EVENT_FN, so ftrace events can also provide registration callbacks if needed. Signed-off-by:
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Josh Stone authored
The syscall enter/exit tracepoints are only supported on archs that HAVE_SYSCALL_TRACEPOINTS, so the declarations should be #ifdef'ed. Also, the definition of syscall_regfunc and syscall_unregfunc should depend on this same config, rather than the ftrace-specific one. Signed-off-by:
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Josh Stone authored
s/HAVE_FTRACE_SYSCALLS/HAVE_SYSCALL_TRACEPOINTS/g s/TIF_SYSCALL_FTRACE/TIF_SYSCALL_TRACEPOINT/g The syscall enter/exit tracing is no longer specific to just ftrace, so they now have names that reflect their tie to tracepoints instead. Signed-off-by:
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Anirban Sinha authored
Signed-off-by:
Anirban Sinha <asinha@zeugmasystems.com> Reviewed-by:
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- 20 Aug, 2009 1 commit
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Li Zefan authored
Before: # echo 1 > events/syscalls/sys_enter_sync/enable # cat events/syscalls/sys_enter_sync/format ... field:int nr; offset:12; size:4; print fmt: "# sync # cat trace ... sync-8950 [000] 2366.087670: sys_sync( After: # echo 1 > events/syscalls/sys_enter_sync/enable # cat events/syscalls/sys_enter_sync/format ... field:int nr; offset:12; size:4; print fmt: "" # sync # cat trace sync-2134 [001] 136.780735: sys_sync() Reported-by:
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- 19 Aug, 2009 6 commits
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Li Zefan authored
Add filtering support for syscall events: # echo 'mode == 0666' > events/syscalls/sys_enter_open # echo 'ret == 0' > events/syscalls/sys_exit_open # echo 1 > events/syscalls/sys_enter_open # echo 1 > events/syscalls/sys_exit_open # cat trace ... modprobe-3084 [001] 117.463140: sys_open(filename: 917d3e8, flags: 0, mode: 1b6) modprobe-3084 [001] 117.463176: sys_open -> 0x0 less-3086 [001] 117.510455: sys_open(filename: 9c6bdb8, flags: 8000, mode: 1b6) sendmail-2574 [001] 122.145840: sys_open(filename: b807a365, flags: 0, mode: 1b6) ... Signed-off-by: -
Li Zefan authored
Extract duplicate code. Also prepare for the later patch. Signed-off-by:
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Li Zefan authored
This parameter is needed by syscall events to add define_fields() handler. Signed-off-by:
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Li Zefan authored
Add "format" file for syscall exit events: # cat events/syscalls/sys_exit_open/format name: sys_exit_open ID: 344 format: field:unsigned short common_type; offset:0; size:2; field:unsigned char common_flags; offset:2; size:1; field:unsigned char common_preempt_count; offset:3; size:1; field:int common_pid; offset:4; size:4; field:int common_tgid; offset:8; size:4; field:int nr; offset:12; size:4; field:unsigned long ret; offset:16; size:4; Signed-off-by: -
Li Zefan authored
The "format" file of a trace event is originally for parsers to parse ftrace binary output. But the "format" file of a syscall event can only be used by perfcounter, because it describes the format of struct syscall_enter_record not struct syscall_trace_enter. To fix this, we remove struct syscall_enter_record, and then struct syscall_trace_enter will be used by both perf profile and ftrace. Signed-off-by:
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Ingo Molnar authored
Commit fb34a08c ("tracing: Add trace events for each syscall entry/exit") changed the lowlevel API to ftrace syscall tracing but did not update s390 which started making use of it recently. This broke the s390 build, as reported by Paul Mundt. Update the callbacks with the syscall number and the syscall return code values. This allows per syscall tracepoints, syscall argument enumeration /debug/tracing/events/syscalls/ and perfcounters support and integration on s390 too. Reported-by:
Paul Mundt <lethal@linux-sh.org> Acked-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <tip-fb34a08c@git.kernel.org> Signed-off-by:
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- 17 Aug, 2009 5 commits
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Li Zefan authored
Use seq_release_private(). Signed-off-by:
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Li Zefan authored
Extract duplicate code in t_start() and t_next(). Signed-off-by:
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Li Zefan authored
One entry is missing in the output of a stat file. The cause is, when stat_seq_start() is called the 2nd time, we should start from the (pos-1)th elem in the rbtree but not pos, because pos == 0 is the header. Signed-off-by:
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Li Zefan authored
When syscall tracing was implemented as a tracer, "syscall_arg_type" trace option could be set to enable the display of syscall parameter types. Now this option is gone since it's no longer a tracer, but the code is still there but dead. So we remove dead code and re-enable the printing of paramete types via the verbose option: # echo verbose > trace_options # echo syscalls > set_event # cat trace ... bash-3331 [000] 95.348937: sys_fcntl64 -> 0x1 bash-3331 [000] 95.348942: sys_close(unsigned int fd: a) ... Signed-off-by: -
Li Zefan authored
Add trace points to trace module_load, module_free, module_get, module_put and module_request, and use trace_event facility to get the trace output. Here's the sample output: TASK-PID CPU# TIMESTAMP FUNCTION | | | | | <...>-42 [000] 1.758380: module_request: fb0 wait=1 call_site=fb_open ... <...>-60 [000] 3.269403: module_load: scsi_wait_scan <...>-60 [000] 3.269432: module_put: scsi_wait_scan call_site=sys_init_module refcnt=0 <...>-61 [001] 3.273168: module_free: scsi_wait_scan ... <...>-1021 [000] 13.836081: module_load: sunrpc <...>-1021 [000] 13.840589: module_put: sunrpc call_site=sys_init_module refcnt=-1 <...>-1027 [000] 13.848098: module_get: sunrpc call_site=try_module_get refcnt=0 <...>-1027 [000] 13.848308: module_get: sunrpc call_site=get_filesystem refcnt=1 <...>-1027 [000] 13.848692: module_put: sunrpc call_site=put_filesystem refcnt=0 ... modprobe-2587 [001] 1088.437213: module_load: trace_events_sample F modprobe-2587 [001] 1088.437786: module_put: trace_events_sample call_site=sys_init_module refcnt=0 Note: - the taints flag can be 'F', 'C' and/or 'P' if mod->taints != 0 - the module refcnt is percpu, so it can be negative in a specific cpu Signed-off-by:Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <4A891B3C.5030608@cn.fujitsu.com> Signed-off-by:
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- 13 Aug, 2009 1 commit
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Ingo Molnar authored
The new syscall_regfunc()/unregfunc() functions rely on the existence of TIF_SYSCALL_FTRACE - but that TIF flag is only offered by HAVE_FTRACE_SYSCALLS. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <new-submission> Signed-off-by:
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- 11 Aug, 2009 5 commits
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Frederic Weisbecker authored
This bring the support for raw syscall events in perfcounters. The arguments or exit value are saved as a raw sample using the PERF_SAMPLE_RAW attribute in a perf counter. Example (for now you must explicitly set the PERF_SAMPLE_RAW flag in perf record): perf record -e syscalls:sys_enter_open -f -F 1 -a perf report -D 0x2cbb8 [0x50]: event: 9 . . ... raw event: size 80 bytes . 0000: 09 00 00 00 02 00 50 00 20 e9 39 ab 0a 7f 00 00 ......P. .9.... . 0010: bc 14 00 00 bc 14 00 00 01 00 00 00 00 00 00 00 ............... . 0020: 2c 00 00 00 15 01 01 00 bc 14 00 00 bc 14 00 00 ,.............. ^ ^ ^ ^ ^ ^ ^ .......................... Event Size struct trace_entry . 0030: 00 00 00 00 46 98 43 02 00 00 00 00 80 08 00 00 ....F.C........ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ptr to file name open flags . 0040: 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ............... ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ . open mode padding 0x2cbb8 [0x50]: PERF_EVENT_SAMPLE (IP, 2): 5308: 0x7f0aab39e920 period: 1 Signed-off-by: -
Frederic Weisbecker authored
Define the format of the syscall trace fields to parse the binary values from a raw trace using the syscall events "format" file. This is defined dynamically using the syscalls metadata. It prepares the export of syscall event raw records to perf counters. Example: $ cat /debug/tracing/events/syscalls/sys_enter_sched_getparam/format name: sys_enter_sched_getparam ID: 39 format: field:unsigned short common_type; offset:0; size:2; field:unsigned char common_flags; offset:2; size:1; field:unsigned char common_preempt_count; offset:3; size:1; field:int common_pid; offset:4; size:4; field:int common_tgid; offset:8; size:4; field:pid_t pid; offset:12; size:8; field:struct sched_param * param; offset:20; size:8; print fmt: "pid: 0x%08lx, param: 0x%08lx", ((unsigned long)(REC->pid)), ((unsigned long)(REC->param)) Signed-off-by: -
Frederic Weisbecker authored
Add the struct ftrace_event_call as a parameter of its show_format() callback. This way we can use it from the syscall trace events to retrieve the syscall name from the ftrace event call parameter and describe its fields using the syscalls metadata. Signed-off-by: -
Jason Baron authored
A number of syscalls are not using 'DEFINE_SYSCALL'. I'm not sure why. Convert x86_64 uname and mmap to use DEFINE_SYSCALL. Signed-off-by:
Jason Baron <jbaron@redhat.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by:
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Jason Baron authored
The new syscall tracepoints names can be too long for the 'perf list' output. Add a few more characters. Signed-off-by:
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