* Re: [PATCH -tip/perf/core] perf probe: Add union member access support
2012-09-12 7:57 [PATCH -tip/perf/core] perf probe: Add union member access support Hyeoncheol Lee
@ 2012-09-12 8:35 ` Namhyung Kim
2012-09-12 15:15 ` Masami Hiramatsu
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Namhyung Kim @ 2012-09-12 8:35 UTC (permalink / raw)
To: Hyeoncheol Lee; +Cc: acme, linux-kernel
Hi Hyeoncheol,
It seems you don't use git send-email which adds people on Cc: lines of
changelog into actual CC list automatically. Or did you send the email
to Masami and Srikar privately?
Thanks,
Namhyung
On Wed, 12 Sep 2012 16:57:45 +0900, Hyeoncheol Lee wrote:
> Union members can be accessed with '.' or '->' like data structure
> member access
>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
> ---
> tools/perf/util/probe-finder.c | 24 ++++++++++++++++--------
> 1 file changed, 16 insertions(+), 8 deletions(-)
>
> diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
> index 94a00de..cc2b856 100644
> --- a/tools/perf/util/probe-finder.c
> +++ b/tools/perf/util/probe-finder.c
> @@ -525,8 +525,10 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> return -ENOENT;
> }
> /* Verify it is a data structure */
> - if (dwarf_tag(&type) != DW_TAG_structure_type) {
> - pr_warning("%s is not a data structure.\n", varname);
> + tag = dwarf_tag(&type);
> + if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
> + pr_warning("%s is not a data structure nor an union.\n",
> + varname);
> return -EINVAL;
> }
>
> @@ -539,8 +541,9 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> *ref_ptr = ref;
> } else {
> /* Verify it is a data structure */
> - if (tag != DW_TAG_structure_type) {
> - pr_warning("%s is not a data structure.\n", varname);
> + if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
> + pr_warning("%s is not a data structure nor an union.\n",
> + varname);
> return -EINVAL;
> }
> if (field->name[0] == '[') {
> @@ -567,10 +570,15 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> }
>
> /* Get the offset of the field */
> - ret = die_get_data_member_location(die_mem, &offs);
> - if (ret < 0) {
> - pr_warning("Failed to get the offset of %s.\n", field->name);
> - return ret;
> + if (tag == DW_TAG_union_type) {
> + offs = 0;
> + } else {
> + ret = die_get_data_member_location(die_mem, &offs);
> + if (ret < 0) {
> + pr_warning("Failed to get the offset of %s.\n",
> + field->name);
> + return ret;
> + }
> }
> ref->offset += (long)offs;
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH -tip/perf/core] perf probe: Add union member access support
2012-09-12 7:57 [PATCH -tip/perf/core] perf probe: Add union member access support Hyeoncheol Lee
2012-09-12 8:35 ` Namhyung Kim
@ 2012-09-12 15:15 ` Masami Hiramatsu
2012-09-12 17:09 ` Arnaldo Carvalho de Melo
2012-09-19 15:10 ` [tip:perf/core] " tip-bot for Hyeoncheol Lee
3 siblings, 0 replies; 5+ messages in thread
From: Masami Hiramatsu @ 2012-09-12 15:15 UTC (permalink / raw)
To: Hyeoncheol Lee; +Cc: acme, linux-kernel, yrl.pp-manager.tt
(2012/09/12 16:57), Hyeoncheol Lee wrote:
> Union members can be accessed with '.' or '->' like data structure
> member access
This seems good to me :)
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Thank you!
>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
> ---
> tools/perf/util/probe-finder.c | 24 ++++++++++++++++--------
> 1 file changed, 16 insertions(+), 8 deletions(-)
>
> diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
> index 94a00de..cc2b856 100644
> --- a/tools/perf/util/probe-finder.c
> +++ b/tools/perf/util/probe-finder.c
> @@ -525,8 +525,10 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> return -ENOENT;
> }
> /* Verify it is a data structure */
> - if (dwarf_tag(&type) != DW_TAG_structure_type) {
> - pr_warning("%s is not a data structure.\n", varname);
> + tag = dwarf_tag(&type);
> + if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
> + pr_warning("%s is not a data structure nor an union.\n",
> + varname);
> return -EINVAL;
> }
>
> @@ -539,8 +541,9 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> *ref_ptr = ref;
> } else {
> /* Verify it is a data structure */
> - if (tag != DW_TAG_structure_type) {
> - pr_warning("%s is not a data structure.\n", varname);
> + if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
> + pr_warning("%s is not a data structure nor an union.\n",
> + varname);
> return -EINVAL;
> }
> if (field->name[0] == '[') {
> @@ -567,10 +570,15 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
> }
>
> /* Get the offset of the field */
> - ret = die_get_data_member_location(die_mem, &offs);
> - if (ret < 0) {
> - pr_warning("Failed to get the offset of %s.\n", field->name);
> - return ret;
> + if (tag == DW_TAG_union_type) {
> + offs = 0;
> + } else {
> + ret = die_get_data_member_location(die_mem, &offs);
> + if (ret < 0) {
> + pr_warning("Failed to get the offset of %s.\n",
> + field->name);
> + return ret;
> + }
> }
> ref->offset += (long)offs;
>
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH -tip/perf/core] perf probe: Add union member access support
2012-09-12 7:57 [PATCH -tip/perf/core] perf probe: Add union member access support Hyeoncheol Lee
2012-09-12 8:35 ` Namhyung Kim
2012-09-12 15:15 ` Masami Hiramatsu
@ 2012-09-12 17:09 ` Arnaldo Carvalho de Melo
2012-09-19 15:10 ` [tip:perf/core] " tip-bot for Hyeoncheol Lee
3 siblings, 0 replies; 5+ messages in thread
From: Arnaldo Carvalho de Melo @ 2012-09-12 17:09 UTC (permalink / raw)
To: Hyeoncheol Lee; +Cc: linux-kernel
Em Wed, Sep 12, 2012 at 04:57:45PM +0900, Hyeoncheol Lee escreveu:
> +++ b/tools/perf/util/probe-finder.c
> @@ -525,8 +525,10 @@ static int convert_variable_fields(Dwarf_Die
> *vr_die, const char *varname,
[acme@sandy linux]$ am /wb/1.patch
Applying: perf probe: Add union member access support
fatal: corrupt patch at line 10
Patch failed at 0001 perf probe: Add union member access support
When you have resolved this problem run "git am --resolved".
If you would prefer to skip this patch, instead run "git am --skip".
To restore the original branch and stop patching run "git am --abort".
[acme@sandy linux]$ git am --abort
[acme@sandy linux]$ patch -p1 < /wb/1.patch
patching file tools/perf/util/probe-finder.c
patch: **** malformed patch at line 60: *vr_die, const char *varname,
[acme@sandy linux]$
I'm fixing this up for you this time, but please fix your MUA.
- Arnaldo
^ permalink raw reply [flat|nested] 5+ messages in thread
* [tip:perf/core] perf probe: Add union member access support
2012-09-12 7:57 [PATCH -tip/perf/core] perf probe: Add union member access support Hyeoncheol Lee
` (2 preceding siblings ...)
2012-09-12 17:09 ` Arnaldo Carvalho de Melo
@ 2012-09-19 15:10 ` tip-bot for Hyeoncheol Lee
3 siblings, 0 replies; 5+ messages in thread
From: tip-bot for Hyeoncheol Lee @ 2012-09-19 15:10 UTC (permalink / raw)
To: linux-tip-commits
Cc: acme, linux-kernel, hpa, mingo, hyc.lee, masami.hiramatsu.pt,
srikar, tglx
Commit-ID: 7b0295b3db20a89b3296673871858b9ab6b68404
Gitweb: http://git.kernel.org/tip/7b0295b3db20a89b3296673871858b9ab6b68404
Author: Hyeoncheol Lee <hyc.lee@gmail.com>
AuthorDate: Wed, 12 Sep 2012 16:57:45 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 14 Sep 2012 15:48:08 -0300
perf probe: Add union member access support
Union members can be accessed with '.' or '->' like data structure
member access
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/CANFS6baeuSBxPGQ8SUZWZErJ2bWs-Nojg+FSo138E1QK8bJJig@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/probe-finder.c | 24 ++++++++++++++++--------
1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 526ba56..1daf5c1 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -525,8 +525,10 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
return -ENOENT;
}
/* Verify it is a data structure */
- if (dwarf_tag(&type) != DW_TAG_structure_type) {
- pr_warning("%s is not a data structure.\n", varname);
+ tag = dwarf_tag(&type);
+ if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
+ pr_warning("%s is not a data structure nor an union.\n",
+ varname);
return -EINVAL;
}
@@ -539,8 +541,9 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
*ref_ptr = ref;
} else {
/* Verify it is a data structure */
- if (tag != DW_TAG_structure_type) {
- pr_warning("%s is not a data structure.\n", varname);
+ if (tag != DW_TAG_structure_type && tag != DW_TAG_union_type) {
+ pr_warning("%s is not a data structure nor an union.\n",
+ varname);
return -EINVAL;
}
if (field->name[0] == '[') {
@@ -567,10 +570,15 @@ static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname,
}
/* Get the offset of the field */
- ret = die_get_data_member_location(die_mem, &offs);
- if (ret < 0) {
- pr_warning("Failed to get the offset of %s.\n", field->name);
- return ret;
+ if (tag == DW_TAG_union_type) {
+ offs = 0;
+ } else {
+ ret = die_get_data_member_location(die_mem, &offs);
+ if (ret < 0) {
+ pr_warning("Failed to get the offset of %s.\n",
+ field->name);
+ return ret;
+ }
}
ref->offset += (long)offs;
^ permalink raw reply related [flat|nested] 5+ messages in thread