- 16 7月, 2011 4 次提交
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由 Masami Hiramatsu 提交于
Move dwarf library related routines to dwarf-aux.{c,h}. This includes several minor changes. - Add simple documents for each API. - Rename die_find_real_subprogram() to die_find_realfunc() - Rename line_walk_handler_t to line_walk_callback_t. - Minor cleanups. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072727.6528.57647.stgit@fedora15Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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由 Masami Hiramatsu 提交于
Since there are dwarf_bitsize, dwarf_bitoffset and dwarf_bytesize defined in libdw, we don't need die_get_bit_size, die_get_bit_offset and die_get_byte_size anymore. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072721.6528.2747.stgit@fedora15Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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由 Masami Hiramatsu 提交于
Since strtailcmp() is enough generic, it should be defined in string.c. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/20110627072715.6528.10677.stgit@fedora15Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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由 Masami Hiramatsu 提交于
Since die_find/walk* callbacks use DIE_FIND_CB_FOUND for both of failed and found cases, it should be "END" instead "FOUND" for avoiding confusion. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reported-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/20110627072709.6528.45706.stgit@fedora15Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
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- 10 5月, 2011 1 次提交
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由 Lin Ming 提交于
pubname_callback_param::found should be initialized to 0 in fastpath lookup, the structure is on the stack and uninitialized otherwise. Signed-off-by: NLin Ming <ming.m.lin@intel.com> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Link: http://lkml.kernel.org/r/1304066518-30420-2-git-send-email-ming.m.lin@intel.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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- 06 4月, 2011 4 次提交
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由 Masami Hiramatsu 提交于
Fix a bug showing incorrect line number when a probe is put on the head of an inline function. This patch updates find_perf_probe_point() and introduces new rules to get correct line number. - If debuginfo doesn't have a correct file name, we shouldn't return line number too, because, without file name, line number is meaningless. - If the address is in a function, it stores the function name and the offset from the function entry. - If the address is on a line, it tries to get the relative line number from the function entry line, except for the address is same as the entry address of the function (in this case, the relative line number should be 0). - If the address is in an inline function entry (call-site), it uses the inline function call line number as the line on which the address is. - If the address is in an inline function body, it stores the inline function name and offset from the inline function call site instead of the (non-inlined) function. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20110330092605.2132.11629.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix die_find_inlinefunc() to return correct innermost inlined function at given address. Without this fix, it returns the outermost inlined function. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20110330092559.2132.78634.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Since dwfl_end() closes given fd with dwfl, caller doesn't need to close its fd when finishing process. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20110330092547.2132.93728.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix to ensure function declared file matches given file name. This fixes a potential bug. As I've commented on Lin Ming's fastpath enhancement, decl_file should be checked on each probe point if user gives a probe point as func@file. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20110330092541.2132.3584.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 30 3月, 2011 1 次提交
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由 Lin Ming 提交于
v3 -> v2: - Make pubname_search_cb more generic - Add fastpath to find_probes also v2 -> v1: - Don't compare file names with cu_find_realpath(...), instead, compare them with the name returned by dwarf_decl_file(sp_die) The vmlinux file may have thousands of CUs. We can lookup function name from .debug_pubnames section to avoid the slow loop on CUs. 1. Improvement data for find_line_range ./perf stat -e cycles -r 10 -- ./perf probe -k /home/mlin/vmlinux \ -s /home/mlin/linux-2.6 \ --line csum_partial_copy_to_user > tmp.log before patch applied ===================== 847,988,276 cycles 0.355075856 seconds time elapsed after patch applied ===================== 206,102,622 cycles 0.086883555 seconds time elapsed 2. Improvement data for find_probes ./perf stat -e cycles -r 10 -- ./perf probe -k /home/mlin/vmlinux \ -s /home/mlin/linux-2.6 \ --vars csum_partial_copy_to_user > tmp.log before patch applied ===================== 848,490,844 cycles 0.355307901 seconds time elapsed after patch applied ===================== 205,684,469 cycles 0.086694010 seconds time elapsed Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-kernel <linux-kernel@vger.kernel.org> LKML-Reference: <1301041668.14111.52.camel@minggr.sh.intel.com> Signed-off-by: NLin Ming <ming.m.lin@intel.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 16 3月, 2011 1 次提交
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由 Ingo Molnar 提交于
Newer compilers (gcc 4.6) complains about: return ret < 0 ?: 0; For the following reason: util/probe-finder.c: In function ‘probe_point_lazy_walker’: util/probe-finder.c:1331:18: error: the omitted middle operand in ?: will always be ‘true’, suggest explicit middle operand [-Werror=parentheses] And indeed the return value is a somewhat obscure (but correct) value of 'true', so return 'ret' instead - this is cleaner and unconfuses GCC as well. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 22 2月, 2011 2 次提交
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由 Arnaldo Carvalho de Melo 提交于
While fixing an error propagating problem in f809b25 I added two redundant checks. I did that because I didn't expect the checks to be on the while and for loop condition expression, where they are tested before we run the loop, where the 'ret' variable is set. So remove it from there and leave it just after it is actually set, eliminating unneded tests. Reported-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
There are two hunks in this patch that stops probe processing as soon as one error is found, breaking out of loops, the other fix an error propagation that should return a negative error number but instead was returning the result of "ret < 0", which is 1 and thus made several error checks fail because they test agains < 0. The problem could be triggered by asking for a variable that was optimized out, fact that should stop the whole probe processing but instead was segfaulting while installing broken probes: [root@emilia ~]# probe perf_mmap:55 user_lock_limit Failed to find the location of user_lock_limit at this address. Perhaps, it has been optimized out. Failed to find 'user_lock_limit' in this function. Add new events: probe:perf_mmap (on perf_mmap:55 with user_lock_limit) probe:perf_mmap_1 (on perf_mmap:55 with user_lock_limit) Segmentation fault (core dumped) [root@emilia ~]# perf probe -l probe:perf_mmap (on perf_mmap:55@git/linux/kernel/perf_event.c with user_lock_limit) probe:perf_mmap_1 (on perf_mmap:55@git/linux/kernel/perf_event.c with user_lock_limit) [root@emilia ~]# After the fix: [root@emilia ~]# probe perf_mmap:55 user_lock_limit Failed to find the location of user_lock_limit at this address. Perhaps, it has been optimized out. Failed to find 'user_lock_limit' in this function. Error: Failed to add events. (-2) [root@emilia ~]# Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 07 2月, 2011 2 次提交
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由 Masami Hiramatsu 提交于
Add bitfield member accessing support to probe arguments. Suggested-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20110204125211.9507.60265.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> [ committer note: Fixed up '%lu' use for return of BYTES_TO_BITS ('%zd') ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Franck Bui-Huu 提交于
Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: lkml <linux-kernel@vger.kernel.org> LKML-Reference: <m3d3o185u1.fsf@gmail.com> Signed-off-by: NFranck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 24 1月, 2011 2 次提交
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由 Masami Hiramatsu 提交于
Enable to put probe inline function call site. This will increase line-based probe-ability. <Without this patch> $ ./perf probe -L schedule:48 <schedule:48> pre_schedule(rq, prev); 50 if (unlikely(!rq->nr_running)) idle_balance(cpu, rq); put_prev_task(rq, prev); next = pick_next_task(rq); 56 if (likely(prev != next)) { sched_info_switch(prev, next); trace_sched_switch_out(prev, next); perf_event_task_sched_out(prev, next); <With this patch> $ ./perf probe -L schedule:48 <schedule:48> 48 pre_schedule(rq, prev); 50 if (unlikely(!rq->nr_running)) 51 idle_balance(cpu, rq); 53 put_prev_task(rq, prev); 54 next = pick_next_task(rq); 56 if (likely(prev != next)) { 57 sched_info_switch(prev, next); 58 trace_sched_switch_out(prev, next); 59 perf_event_task_sched_out(prev, next); Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20110113124604.22426.48873.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Introduce die_walk_lines() for walking on the line list of given die, and use it in line_range finder and probe point finder. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20110113124558.22426.48170.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> [ committer note: s/%ld/%zd/ for a size_t nlines var that broke f14 x86 build] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 22 12月, 2010 2 次提交
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由 Masami Hiramatsu 提交于
Since the libdwfl library before 0.148 fails to analyze live kernel debuginfo, 'perf probe --list' compiled with those old libdwfl sometimes crashes. To avoid that bug, perf probe does not use libdwfl's live kernel analysis routine when it is compiled with older libdwfl. Side effect: perf with older libdwfl doesn't support listing probe in modules with source code line. Those could be shown by symbol+offset. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20101217131218.24123.62424.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Add new lines for error or debug messages, change dwarf related words to more generic words (or just removed). Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20101217131211.24123.40437.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 24 10月, 2010 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
Fixing the following error on 32-bit arches: util/probe-finder.c: In function ‘line_range_search_cb’: util/probe-finder.c:1734: error: format ‘%lx’ expects type ‘long unsigned int’, but argument 3 has type ‘Dwarf_Off’ Reported-by: NIngo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 22 10月, 2010 6 次提交
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由 Masami Hiramatsu 提交于
Add basic module probe support on perf probe. This introduces "--module <MODNAME>" option to perf probe for putting probes and showing lines and variables in the given module. Currently, this supports only probing on running modules. Supporting off-line module probing is the next step. e.g.) [show lines] # ./perf probe --module drm -L drm_vblank_info <drm_vblank_info:0> 0 int drm_vblank_info(struct seq_file *m, void *data) 1 { struct drm_info_node *node = (struct drm_info_node *) m->private 3 struct drm_device *dev = node->minor->dev; ... [show vars] # ./perf probe --module drm -V drm_vblank_info:3 Available variables at drm_vblank_info:3 @<drm_vblank_info+20> (unknown_type) data struct drm_info_node* node struct seq_file* m [put a probe] # ./perf probe --module drm drm_vblank_info:3 node m Add new event: probe:drm_vblank_info (on drm_vblank_info:3 with node m) You can now use it on all perf tools, such as: perf record -e probe:drm_vblank_info -aR sleep 1 [list probes] # ./perf probe -l probe:drm_vblank_info (on drm_vblank_info:3@drivers/gpu/drm/drm_info.c with ... Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101021101341.3542.71638.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Add --externs for allowing --vars to show accessible global (externally defined) variables from a given probe point too. This will give you a hint which globals can be accessible from the probe point. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101021101335.3542.31003.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Add -V (--vars) option for listing accessible local variables at given probe point. This will help finding which local variables are available for event arguments. e.g.) # perf probe -V call_timer_fn:23 Available variables at call_timer_fn:23 @<run_timer_softirq+345> function_type* fn int preempt_count long unsigned int data struct list_head work_list struct list_head* head struct timer_list* timer struct tvec_base* base Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101021101323.3542.40282.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Allow users to set external defined global variables as event arguments (e.g. jiffies). Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20101021101316.3542.1999.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix to check the die's address and search into the die only if it has given address. This will avoid finding wrong variables in wrong basic block. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20101021101309.3542.46434.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix to get the actual type die of variables by using dwarf_attr_integrate() which gets attribute from die even if the type die is connected by DW_AT_abstract_origin. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20101021101302.3542.38549.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 08 9月, 2010 2 次提交
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由 Masami Hiramatsu 提交于
Don't make argument names from raw parameters (means the parameters are written in kprobe-tracer syntax), because the argument syntax may include special characters. Just leave it, then kprobe-tracer gives a new name. Reported-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100827113859.22882.75598.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix a bug to support %return probe syntax again. Previous commit 4235b045 has a bug which disables the %return syntax on perf probe. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100827113852.22882.87447.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 07 8月, 2010 1 次提交
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由 Masami Hiramatsu 提交于
Copy type field if it is for raw parameters. Without this fix, perf probe drops the type if user passes it for raw parameters (e.g. %ax:u32 will be converted to %ax). Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <4C577AD8.50808@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 06 8月, 2010 1 次提交
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由 Andrea Gelmini 提交于
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <1281016299-23958-15-git-send-email-andrea.gelmini@gelma.net> Signed-off-by: NAndrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 30 7月, 2010 1 次提交
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由 Srikar Dronamraju 提交于
As a precursor for perf to support uprobes, rename fields/functions that had kprobe in their name but can be shared across perf-kprobes and perf-uprobes to probe. Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Wielaard <mjw@redhat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Naren A Devaiah <naren.devaiah@in.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <20100729141351.GG21723@linux.vnet.ibm.com> Signed-off-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 16 7月, 2010 3 次提交
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由 Masami Hiramatsu 提交于
Invert the return value of die_compare_name(), because it returns a 'bool' result which should be expeced true if the die's name is same as compared string. LKML-Reference: <4C36EBED.1000006@hitachi.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Gcc generates DW_AT_comp_dir and stores relative source path if building kernel without O= option. In that case, perf probe --line sometimes doesn't work without --source option, because it tries to access relative source path. This adds DW_AT_comp_dir support to perf probe for finding an absolute source path when no --source option. LKML-Reference: <4C36EBE7.3060802@hitachi.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Perf probe -L shows incorrect error message (Dwarf error) if it fails to find source file. This can confuse users. # ./perf probe -s /nowhere -L vfs_read Debuginfo analysis failed. (-2) Error: Failed to show lines. (-2) With this patch, it shows correct message. # ./perf probe -s /nowhere -L vfs_read Failed to find source file. (-2) Error: Failed to show lines. (-2) LKML-Reference: <4C36EBDB.4020308@hitachi.com> Cc: Chase Douglas <chase.douglas@canonical.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: NChase Douglas <chase.douglas@canonical.com> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 06 7月, 2010 3 次提交
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由 Masami Hiramatsu 提交于
Add static and global variables support to perf probe. This allows user to trace non-local variables (and structure members) at probe points. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100519195749.2885.17451.stgit@localhost6.localdomain6> Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Add array-entry tracing support to perf probe. This enables to trace an entry of array which is indexed by constant value, e.g. array[0]. For example: $ perf probe -a 'bio_split bi->bi_io_vec[0]' Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100519195742.2885.5344.stgit@localhost6.localdomain6> Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Support string type casting to event argument. If perf-probe finds an argument casted as string, it ensures the target variable is "(unsigned/signed) char *(or []). perf-probe also adds dereference if the target is a pointer. So, both of 'char buf[10];' and 'char *buf;' can be accessed by 'buf:string' Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100519195734.2885.1666.stgit@localhost6.localdomain6> Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 17 6月, 2010 1 次提交
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由 Chase Douglas 提交于
The probe plugin requires access to the source code for some operations. The source code must be in the exact same location as specified by the DWARF tags, but sometimes the location is an absolute path that cannot be replicated by a normal user. This change adds the -s|--source option to allow the user to specify the root of the kernel source tree. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <1276543590-10486-1-git-send-email-chase.douglas@canonical.com> Signed-off-by: NChase Douglas <chase.douglas@canonical.com> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 19 5月, 2010 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
That could leave filedescriptors open and leak memory. Also stop using xmalloc, use malloc and handle results just like other error cases in the same routine that used it. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 18 5月, 2010 1 次提交
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由 Masami Hiramatsu 提交于
Check elfutils version, and if it is old don't compile CFI analysis code. This allows to compile perf with old elfutils. Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Tested-by: NStephane Eranian <eranian@google.com> Reported-by: NRobert Richter <robert.richter@amd.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20100510171207.26029.97604.stgit@localhost6.localdomain6> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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