From 97148a97baf71536e15aa0acf3310b7b1409e2f4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 20 Apr 2012 15:17:50 -0300 Subject: [PATCH] perf annotate browser: Bandaid offsets/jump label objdump ambiguity We need to cope with things like: $ objdump -d --no-show-raw -S -C /lib/modules/3.4.0-rc2+/build/vmlinux ffffffff8125ec60 : * Output: * eax uncopied bytes or 0 if successful. */ ENTRY(copy_user_generic_unrolled) CFI_STARTPROC cmpl $8,%edx ffffffff8125ec60: cmp $0x8,%edx jb 20f /* less then 8 bytes, go to byte copy loop */ ffffffff8125ec63: jb ffffffff8125ecf5 ALIGN_DESTINATION ffffffff8125ec8d: je ffffffff8125ecd9 1: movq (%rsi),%r8 ffffffff8125ec8f: mov (%rsi),%r8 2: movq 1*8(%rsi),%r9 ffffffff8125ec92: mov 0x8(%rsi),%r9 3: movq 2*8(%rsi),%r10 ffffffff8125ec96: mov 0x10(%rsi),%r10 4: movq 3*8(%rsi),%r11 Probably expect that the length of the addr field be the same... Lazy move for now, back to supporting suppressing the address on callq lines... Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-7hp85vnvowpqj8799f8rxbu1@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/annotate.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index 9c7b6d8..c2bbfc7 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -690,7 +690,15 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx, bpos->idx = browser.nr_entries++; if (pos->offset != -1) { bpos->idx_asm = browser.nr_asm_entries++; - browser.offsets[pos->offset] = pos; + /* + * FIXME: short term bandaid to cope with assembly + * routines that comes with labels in the same column + * as the address in objdump, sigh. + * + * E.g. copy_user_generic_unrolled + */ + if (pos->offset < (s64)size) + browser.offsets[pos->offset] = pos; } else bpos->idx_asm = -1; } -- 2.7.4