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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2015-09-04 15:43:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 16:54:41 -0700 |
| commit | e260fe01fa39eddb05bd8b70fad5bc9a129648f2 (patch) | |
| tree | a0fe77201bae60f7bb929fd2f2378cf726cf4a2d /scripts/decode_stacktrace.sh | |
| parent | fa70900e0984792cc45a9e51c28684c3287058c2 (diff) | |
| download | lwn-e260fe01fa39eddb05bd8b70fad5bc9a129648f2.tar.gz lwn-e260fe01fa39eddb05bd8b70fad5bc9a129648f2.zip | |
scripts: decode_stacktrace: fix ARM architecture decoding
Fix the stack decoder for the ARM architecture.
An ARM stack is designed as :
[ 81.547704] [<c023eb04>] (bucket_find_contain) from [<c023ec88>] (check_sync+0x40/0x4f8)
[ 81.559668] [<c023ec88>] (check_sync) from [<c023f8c4>] (debug_dma_sync_sg_for_cpu+0x128/0x194)
[ 81.571583] [<c023f8c4>] (debug_dma_sync_sg_for_cpu) from [<c0327dec>] (__videobuf_s
The current script doesn't expect the symbols to be bound by
parenthesis, and triggers the following errors :
awk: cmd. line:1: error: Unmatched ( or \(: / (check_sync$/
[ 81.547704] (bucket_find_contain) from (check_sync+0x40/0x4f8)
Fix it by chopping starting and ending parenthesis from the each symbol
name.
As a side note, this probably comes from the function
dump_backtrace_entry(), which is implemented differently for each
architecture. That makes a single decoding script a bit a challenge.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/decode_stacktrace.sh')
| -rwxr-xr-x | scripts/decode_stacktrace.sh | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh index 515c4c00e957..00d6d53c2681 100755 --- a/scripts/decode_stacktrace.sh +++ b/scripts/decode_stacktrace.sh @@ -14,11 +14,14 @@ declare -A cache parse_symbol() { # The structure of symbol at this point is: - # [name]+[offset]/[total length] + # ([name]+[offset]/[total length]) # # For example: # do_basic_setup+0x9c/0xbf + # Remove the englobing parenthesis + symbol=${symbol#\(} + symbol=${symbol%\)} # Strip the symbol name so that we could look it up local name=${symbol%+*} |