Messages in this thread | | | From | Frederic Weisbecker <> | Subject | [PATCH 0/3] perfcounter: callchain symbol resolving and fixes | Date | Wed, 1 Jul 2009 05:35:12 +0200 |
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Hi,
This patchset provides the symbol resolving for callchains. Example:
perf report -s sym -c
5.40% [k] __d_lookup 3.60% __d_lookup perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at vfs_fstatat vfs_lstat sys_newlstat system_call_fastpath __lxstat 0x406fb1
1.26% __d_lookup perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at vfs_fstatat vfs_lstat sys_newlstat system_call_fastpath __lxstat [...]
Sorry about the third patch, it's a kind of all-in-one monolithic thing which gathers various fixes. I should have granulate it...
Still in my plans:
- profit we have a tree to display a better graph hierarchy - let the user provide a limit for hit percentage, depth, number of backtraces, etc... - better output - colors
And another one:
- remove the perfcounter internal nmi call frame (ie: every nmi frame) so that we drop this header from each callchain:
perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi
Frederic.
Frederic Weisbecker (3): perfcounter: Fix storage size allocation of callchain list perfcounter: Resolve symbols in callchains perfcounter: Various fixes for callchains
tools/perf/builtin-report.c | 102 ++++++++++++++++++++++----------- tools/perf/util/callchain.c | 131 ++++++++++++++++++++++++++++++++----------- tools/perf/util/callchain.h | 5 +- 3 files changed, 168 insertions(+), 70 deletions(-)
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