x86/dumpstack: use %pSb/%pBb for backtrace printing
authorStephen Boyd <swboyd@chromium.org>
Thu, 8 Jul 2021 01:09:27 +0000 (18:09 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 8 Jul 2021 18:48:22 +0000 (11:48 -0700)
commit9ef8af2a8f25b16eec6d2865ca7d9116a24ad46a
tree6d79fbf291458f0ec528cc87b095bd73b492f995
parentf61b8706075a1d04ed27cec369e35cf128c728c3
x86/dumpstack: use %pSb/%pBb for backtrace printing

Let's use the new printk formats to print the stacktrace entries when
printing a backtrace to the kernel logs.  This will include any module's
build ID[1] in it so that offline/crash debugging can easily locate the
debuginfo for a module via something like debuginfod[2].

Link: https://lkml.kernel.org/r/20210511003845.2429846-8-swboyd@chromium.org
Link: https://fedoraproject.org/wiki/Releases/FeatureBuildId
Link: https://sourceware.org/elfutils/Debuginfod.html
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/x86/kernel/dumpstack.c