From bdca79c2bf40556b664c9b1c32aec103e9bdb4a9 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 18 Aug 2016 17:59:21 +0900 Subject: ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal Change kprobe/uprobe-tracer to show the arguments type-casted with u8/u16/u32/u64 in decimal digits instead of hexadecimal. To minimize compatibility issue, the arguments without type casting are typed by x64 (or x32 for 32bit arch) by default. Note: all arguments set by old perf probe without types are shown in decimal by default. Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt Cc: Alexander Shishkin Cc: Hemant Kumar Cc: Naohiro Aota Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/147151076135.12957.14684546093034343894.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo --- Documentation/trace/kprobetrace.txt | 5 ++++- Documentation/trace/uprobetracer.txt | 5 ++++- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'Documentation/trace') diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt index 9109c8e8a5a1..e4991fb1eedc 100644 --- a/Documentation/trace/kprobetrace.txt +++ b/Documentation/trace/kprobetrace.txt @@ -54,7 +54,10 @@ Types ----- Several types are supported for fetch-args. Kprobe tracer will access memory by given type. Prefix 's' and 'u' means those types are signed and unsigned -respectively. Traced arguments are shown in decimal (signed) or hex (unsigned). +respectively. 'x' prefix implies it is unsigned. Traced arguments are shown +in decimal ('s' and 'u') or hexadecimal ('x'). Without type casting, 'x32' +or 'x64' is used depends on the architecture (e.g. x86-32 uses x32, and +x86-64 uses x64). String type is a special type, which fetches a "null-terminated" string from kernel space. This means it will fail and store NULL if the string container has been paged out. diff --git a/Documentation/trace/uprobetracer.txt b/Documentation/trace/uprobetracer.txt index 7e6d28c54b75..94b6b4581763 100644 --- a/Documentation/trace/uprobetracer.txt +++ b/Documentation/trace/uprobetracer.txt @@ -50,7 +50,10 @@ Types ----- Several types are supported for fetch-args. Uprobe tracer will access memory by given type. Prefix 's' and 'u' means those types are signed and unsigned -respectively. Traced arguments are shown in decimal (signed) or hex (unsigned). +respectively. 'x' prefix implies it is unsigned. Traced arguments are shown +in decimal ('s' and 'u') or hexadecimal ('x'). Without type casting, 'x32' +or 'x64' is used depends on the architecture (e.g. x86-32 uses x32, and +x86-64 uses x64). String type is a special type, which fetches a "null-terminated" string from user space. Bitfield is another special type, which takes 3 parameters, bit-width, bit- -- cgit v1.2.3