From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
To: mpe@ellerman.id.au, mikey@neuling.org
Cc: apopple@linux.ibm.com, paulus@samba.org, npiggin@gmail.com,
christophe.leroy@c-s.fr, naveen.n.rao@linux.vnet.ibm.com,
peterz@infradead.org, jolsa@kernel.org, oleg@redhat.com,
fweisbec@gmail.com, mingo@kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
ravi.bangoria@linux.ibm.com
Subject: [PATCH v3 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints
Date: Tue, 14 Apr 2020 08:46:47 +0530 [thread overview]
Message-ID: <20200414031659.58875-5-ravi.bangoria@linux.ibm.com> (raw)
In-Reply-To: <20200414031659.58875-1-ravi.bangoria@linux.ibm.com>
User can ask for num of available watchpoints(dbginfo.num_data_bps)
using ptrace(PPC_PTRACE_GETHWDBGINFO). Return actual number of
available watchpoints on the machine rather than hardcoded 1.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
---
arch/powerpc/kernel/ptrace/ptrace-noadv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/ptrace/ptrace-noadv.c b/arch/powerpc/kernel/ptrace/ptrace-noadv.c
index f87e7c5c3bf3..12962302d6a4 100644
--- a/arch/powerpc/kernel/ptrace/ptrace-noadv.c
+++ b/arch/powerpc/kernel/ptrace/ptrace-noadv.c
@@ -44,7 +44,7 @@ void ppc_gethwdinfo(struct ppc_debug_info *dbginfo)
dbginfo->version = 1;
dbginfo->num_instruction_bps = 0;
if (ppc_breakpoint_available())
- dbginfo->num_data_bps = 1;
+ dbginfo->num_data_bps = nr_wp_slots();
else
dbginfo->num_data_bps = 0;
dbginfo->num_condition_regs = 0;
--
2.21.1
next prev parent reply other threads:[~2020-04-14 3:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 3:16 [PATCH v3 00/16] powerpc/watchpoint: Preparation for more than one watchpoint Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 01/16] powerpc/watchpoint: Rename current DAWR macros Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 02/16] powerpc/watchpoint: Add SPRN macros for second DAWR Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 03/16] powerpc/watchpoint: Introduce function to get nr watchpoints dynamically Ravi Bangoria
2020-04-14 3:16 ` Ravi Bangoria [this message]
2020-04-14 3:16 ` [PATCH v3 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 06/16] powerpc/watchpoint: Provide DAWR number to __set_breakpoint Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 07/16] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 09/16] powerpc/watchpoint: Convert thread_struct->hw_brk to an array Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 10/16] powerpc/watchpoint: Use loop for thread_struct->ptrace_bps Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 11/16] powerpc/watchpoint: Introduce is_ptrace_bp() function Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 12/16] powerpc/watchpoint: Use builtin ALIGN*() macros Ravi Bangoria
2020-04-14 5:48 ` Christophe Leroy
2020-04-24 3:24 ` Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 13/16] powerpc/watchpoint: Prepare handler to handle more than one watcnhpoint Ravi Bangoria
2020-04-14 5:53 ` Christophe Leroy
2020-04-24 3:32 ` Ravi Bangoria
2020-04-24 5:48 ` Christophe Leroy
2020-04-14 3:16 ` [PATCH v3 14/16] powerpc/watchpoint: Don't allow concurrent perf and ptrace events Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 15/16] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting Ravi Bangoria
2020-04-14 3:16 ` [PATCH v3 16/16] powerpc/watchpoint/xmon: Support 2nd dawr Ravi Bangoria
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=20200414031659.58875-5-ravi.bangoria@linux.ibm.com \
--to=ravi.bangoria@linux.ibm.com \
--cc=apopple@linux.ibm.com \
--cc=christophe.leroy@c-s.fr \
--cc=fweisbec@gmail.com \
--cc=jolsa@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mikey@neuling.org \
--cc=mingo@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=naveen.n.rao@linux.vnet.ibm.com \
--cc=npiggin@gmail.com \
--cc=oleg@redhat.com \
--cc=paulus@samba.org \
--cc=peterz@infradead.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).