From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
"acme@kernel.org" <acme@kernel.org>,
"jolsa@kernel.org" <jolsa@kernel.org>,
"adrian.hunter@intel.com" <adrian.hunter@intel.com>,
"irogers@google.com" <irogers@google.com>,
"namhyung@kernel.org" <namhyung@kernel.org>,
"segher@kernel.crashing.org" <segher@kernel.crashing.org>
Cc: "linux-perf-users@vger.kernel.org"
<linux-perf-users@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"maddy@linux.ibm.com" <maddy@linux.ibm.com>,
"kjain@linux.ibm.com" <kjain@linux.ibm.com>,
"disgoel@linux.vnet.ibm.com" <disgoel@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"akanksha@linux.ibm.com" <akanksha@linux.ibm.com>
Subject: Re: [PATCH V2 8/9] tools/perf: Add support to find global register variables using find_data_type_global_reg
Date: Tue, 7 May 2024 10:03:02 +0000 [thread overview]
Message-ID: <05213684-d45b-4a6c-82ef-6ec7fd2653b2@csgroup.eu> (raw)
In-Reply-To: <20240506121906.76639-9-atrajeev@linux.vnet.ibm.com>
Le 06/05/2024 à 14:19, Athira Rajeev a écrit :
> There are cases where define a global register variable and associate it
> with a specified register. Example, in powerpc, two registers are
> defined to represent variable:
> 1. r13: represents local_paca
> register struct paca_struct *local_paca asm("r13");
>
> 2. r1: represents stack_pointer
> register void *__stack_pointer asm("r1");
What about r2:
register struct task_struct *current asm ("r2");
>
> These regs are present in dwarf debug as DW_OP_reg as part of variables
> in the cu_die (compile unit). These are not present in die search done
> in the list of nested scopes since these are global register variables.
>
next prev parent reply other threads:[~2024-05-07 10:03 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-06 12:18 [PATCH V2 0/9] Add data type profiling support for powerpc Athira Rajeev
2024-05-06 12:18 ` [PATCH V2 1/9] tools/perf: Move the data structures related to register type to header file Athira Rajeev
2024-05-06 12:18 ` [PATCH V2 2/9] tools/perf: Add "update_insn_state" callback function to handle arch specific instruction tracking Athira Rajeev
2024-05-06 12:19 ` [PATCH V2 3/9] tools/perf: Fix a comment about multi_regs in extract_reg_offset function Athira Rajeev
2024-05-07 4:40 ` Namhyung Kim
2024-05-07 14:52 ` Arnaldo Carvalho de Melo
2024-05-06 12:19 ` [PATCH V2 4/9] tools/perf: Add support to capture and parse raw instruction in objdump Athira Rajeev
2024-05-07 4:57 ` Namhyung Kim
2024-05-07 9:35 ` Christophe Leroy
2024-05-09 17:26 ` Athira Rajeev
2024-05-09 20:55 ` Namhyung Kim
2024-05-10 14:26 ` Arnaldo Carvalho de Melo
2024-05-22 13:58 ` Athira Rajeev
2024-05-06 12:19 ` [PATCH V2 5/9] tools/perf: Update parameters for reg extract functions to use raw instruction on powerpc Athira Rajeev
2024-05-07 9:48 ` Christophe Leroy
2024-05-22 14:06 ` Athira Rajeev
2024-05-06 12:19 ` [PATCH V2 6/9] tools/perf: Update instruction tracking for powerpc Athira Rajeev
2024-05-07 9:52 ` Christophe Leroy
2024-05-23 13:58 ` Athira Rajeev
2024-05-06 12:19 ` [PATCH V2 7/9] tools/perf: Update instruction tracking with add instruction Athira Rajeev
2024-05-07 9:58 ` Christophe Leroy
2024-05-23 13:55 ` Athira Rajeev
2024-05-06 12:19 ` [PATCH V2 8/9] tools/perf: Add support to find global register variables using find_data_type_global_reg Athira Rajeev
2024-05-07 10:03 ` Christophe Leroy [this message]
2024-05-24 12:17 ` Athira Rajeev
2024-05-24 12:47 ` Christophe Leroy
2024-05-06 12:19 ` [PATCH V2 9/9] tools/perf: Add support for global_die to capture name of variable in case of register defined variable Athira Rajeev
2024-05-07 4:39 ` [PATCH V2 0/9] Add data type profiling support for powerpc Namhyung Kim
2024-05-13 7:32 ` Athira Rajeev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=05213684-d45b-4a6c-82ef-6ec7fd2653b2@csgroup.eu \
--to=christophe.leroy@csgroup.eu \
--cc=acme@kernel.org \
--cc=adrian.hunter@intel.com \
--cc=akanksha@linux.ibm.com \
--cc=atrajeev@linux.vnet.ibm.com \
--cc=disgoel@linux.vnet.ibm.com \
--cc=irogers@google.com \
--cc=jolsa@kernel.org \
--cc=kjain@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=maddy@linux.ibm.com \
--cc=namhyung@kernel.org \
--cc=segher@kernel.crashing.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).