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 <ravi.bangoria@linux.ibm.com>
Subject: [PATCH 11/15] powerpc/watchpoint: Introduce is_ptrace_bp() function
Date: Mon, 9 Mar 2020 14:28:02 +0530 [thread overview]
Message-ID: <20200309085806.155823-12-ravi.bangoria@linux.ibm.com> (raw)
In-Reply-To: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com>
Introduce is_ptrace_bp() function and move the check inside the
function. We will utilize it more in later set of patches.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
---
arch/powerpc/kernel/hw_breakpoint.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index b27aca623267..0e35ff372d8e 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -90,6 +90,11 @@ void arch_uninstall_hw_breakpoint(struct perf_event *bp)
hw_breakpoint_disable();
}
+static bool is_ptrace_bp(struct perf_event *bp)
+{
+ return (bp->overflow_handler == ptrace_triggered);
+}
+
/*
* Perform cleanup of arch-specific counters during unregistration
* of the perf-event
@@ -324,7 +329,7 @@ int hw_breakpoint_handler(struct die_args *args)
* one-shot mode. The ptrace-ed process will receive the SIGTRAP signal
* generated in do_dabr().
*/
- if (bp->overflow_handler == ptrace_triggered) {
+ if (is_ptrace_bp(bp)) {
perf_bp_event(bp, regs);
rc = NOTIFY_DONE;
goto out;
--
2.21.1
next prev parent reply other threads:[~2020-03-09 8:59 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-09 8:57 [PATCH 00/15] powerpc/watchpoint: Preparation for more than one watchpoint Ravi Bangoria
2020-03-09 8:57 ` [PATCH 01/15] powerpc/watchpoint: Rename current DAWR macros Ravi Bangoria
2020-03-17 10:14 ` Christophe Leroy
2020-03-18 12:40 ` Ravi Bangoria
2020-03-09 8:57 ` [PATCH 02/15] powerpc/watchpoint: Add SPRN macros for second DAWR Ravi Bangoria
2020-03-17 10:16 ` Christophe Leroy
2020-03-18 18:30 ` Segher Boessenkool
2020-03-09 8:57 ` [PATCH 03/15] powerpc/watchpoint: Introduce function to get nr watchpoints dynamically Ravi Bangoria
2020-03-17 10:21 ` Christophe Leroy
2020-03-18 5:50 ` Ravi Bangoria
2020-03-09 8:57 ` [PATCH 04/15] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Ravi Bangoria
2020-03-09 8:57 ` [PATCH 05/15] powerpc/watchpoint: Provide DAWR number to set_dawr Ravi Bangoria
2020-03-17 10:28 ` Christophe Leroy
2020-03-18 6:18 ` Ravi Bangoria
2020-03-09 8:57 ` [PATCH 06/15] powerpc/watchpoint: Provide DAWR number to __set_breakpoint Ravi Bangoria
2020-03-09 8:57 ` [PATCH 07/15] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Ravi Bangoria
2020-03-17 10:32 ` Christophe Leroy
2020-03-18 6:57 ` Ravi Bangoria
2020-03-26 3:32 ` Ravi Bangoria
2020-03-09 8:57 ` [PATCH 08/15] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Ravi Bangoria
2020-03-17 10:35 ` Christophe Leroy
2020-03-18 7:32 ` Ravi Bangoria
2020-03-09 8:58 ` [PATCH 09/15] powerpc/watchpoint: Convert thread_struct->hw_brk to an array Ravi Bangoria
2020-03-17 10:37 ` Christophe Leroy
2020-03-18 8:36 ` Ravi Bangoria
2020-03-18 8:56 ` Christophe Leroy
2020-03-18 9:22 ` Ravi Bangoria
2020-03-09 8:58 ` [PATCH 10/15] powerpc/watchpoint: Use loop for thread_struct->ptrace_bps Ravi Bangoria
2020-03-17 10:48 ` Christophe Leroy
2020-03-18 9:43 ` Ravi Bangoria
2020-03-09 8:58 ` Ravi Bangoria [this message]
2020-03-17 10:49 ` [PATCH 11/15] powerpc/watchpoint: Introduce is_ptrace_bp() function Christophe Leroy
2020-03-09 8:58 ` [PATCH 12/15] powerpc/watchpoint: Prepare handler to handle more than one watcnhpoint Ravi Bangoria
2020-03-17 10:59 ` Christophe Leroy
2020-03-18 11:35 ` Michael Ellerman
2020-03-18 11:44 ` Christophe Leroy
2020-03-18 21:27 ` Segher Boessenkool
2020-03-18 23:36 ` Michael Ellerman
2020-03-18 12:14 ` Ravi Bangoria
2020-03-09 8:58 ` [PATCH 13/15] powerpc/watchpoint: Don't allow concurrent perf and ptrace events Ravi Bangoria
2020-03-17 11:08 ` Christophe Leroy
2020-03-18 12:35 ` Ravi Bangoria
2020-03-09 8:58 ` [PATCH 14/15] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting Ravi Bangoria
2020-03-17 11:10 ` Christophe Leroy
2020-03-18 12:37 ` Ravi Bangoria
2020-03-18 13:31 ` Christophe Leroy
2020-03-09 8:58 ` [PATCH 15/15] powerpc/watchpoint/xmon: Support 2nd dawr Ravi Bangoria
2020-03-17 11:14 ` Christophe Leroy
2020-03-18 12:39 ` Ravi Bangoria
2020-03-16 15:05 ` [PATCH 00/15] powerpc/watchpoint: Preparation for more than one watchpoint Christophe Leroy
2020-03-16 18:43 ` Segher Boessenkool
2020-03-17 5:56 ` Christophe Leroy
2020-03-18 12:52 ` Ravi Bangoria
2020-03-23 13:37 ` Ravi Bangoria
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