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 v6 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Date: Thu, 14 May 2020 16:47:29 +0530 [thread overview] Message-ID: <20200514111741.97993-5-ravi.bangoria@linux.ibm.com> (raw) In-Reply-To: <20200514111741.97993-1-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> Reviewed-by: Michael Neuling <mikey@neuling.org> --- 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; -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Ravi Bangoria <ravi.bangoria@linux.ibm.com> To: mpe@ellerman.id.au, mikey@neuling.org Cc: christophe.leroy@c-s.fr, apopple@linux.ibm.com, ravi.bangoria@linux.ibm.com, peterz@infradead.org, fweisbec@gmail.com, oleg@redhat.com, npiggin@gmail.com, linux-kernel@vger.kernel.org, paulus@samba.org, jolsa@kernel.org, naveen.n.rao@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org, mingo@kernel.org Subject: [PATCH v6 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Date: Thu, 14 May 2020 16:47:29 +0530 [thread overview] Message-ID: <20200514111741.97993-5-ravi.bangoria@linux.ibm.com> (raw) In-Reply-To: <20200514111741.97993-1-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> Reviewed-by: Michael Neuling <mikey@neuling.org> --- 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; -- 2.26.2
next prev parent reply other threads:[~2020-05-14 11:18 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-14 11:17 [PATCH v6 00/16] powerpc/watchpoint: Preparation for more than one watchpoint Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 01/16] powerpc/watchpoint: Rename current DAWR macros Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 02/16] powerpc/watchpoint: Add SPRN macros for second DAWR Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 03/16] powerpc/watchpoint: Introduce function to get nr watchpoints dynamically Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria [this message] 2020-05-14 11:17 ` [PATCH v6 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 06/16] powerpc/watchpoint: Provide DAWR number to __set_breakpoint Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 07/16] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 09/16] powerpc/watchpoint: Convert thread_struct->hw_brk to an array Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 10/16] powerpc/watchpoint: Use loop for thread_struct->ptrace_bps Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 11/16] powerpc/watchpoint: Introduce is_ptrace_bp() function Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 12/16] powerpc/watchpoint: Use builtin ALIGN*() macros Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 13/16] powerpc/watchpoint: Prepare handler to handle more than one watcnhpoint Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 14/16] powerpc/watchpoint: Don't allow concurrent perf and ptrace events Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 15/16] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-14 11:17 ` [PATCH v6 16/16] powerpc/watchpoint/xmon: Support 2nd DAWR Ravi Bangoria 2020-05-14 11:17 ` Ravi Bangoria 2020-05-20 11:00 ` [PATCH v6 00/16] powerpc/watchpoint: Preparation for more than one watchpoint Michael Ellerman 2020-05-20 11:00 ` Michael Ellerman
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