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 v2 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Date: Wed, 1 Apr 2020 11:43:01 +0530 [thread overview] Message-ID: <20200401061309.92442-9-ravi.bangoria@linux.ibm.com> (raw) In-Reply-To: <20200401061309.92442-1-ravi.bangoria@linux.ibm.com> Instead of disabling only first watchpoint, disable all available watchpoints while clearing dawr_force_enable. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> --- arch/powerpc/kernel/dawr.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c index 311e51ee09f4..5c882f07ac7d 100644 --- a/arch/powerpc/kernel/dawr.c +++ b/arch/powerpc/kernel/dawr.c @@ -50,9 +50,13 @@ int set_dawr(struct arch_hw_breakpoint *brk, int nr) return 0; } -static void set_dawr_cb(void *info) +static void disable_dawrs(void *info) { - set_dawr(info, 0); + struct arch_hw_breakpoint null_brk = {0}; + int i; + + for (i = 0; i < nr_wp_slots(); i++) + set_dawr(&null_brk, i); } static ssize_t dawr_write_file_bool(struct file *file, @@ -74,7 +78,7 @@ static ssize_t dawr_write_file_bool(struct file *file, /* If we are clearing, make sure all CPUs have the DAWR cleared */ if (!dawr_force_enable) - smp_call_function(set_dawr_cb, &null_brk, 0); + smp_call_function(disable_dawrs, NULL, 0); return rc; } -- 2.21.1
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: 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 v2 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Date: Wed, 1 Apr 2020 11:43:01 +0530 [thread overview] Message-ID: <20200401061309.92442-9-ravi.bangoria@linux.ibm.com> (raw) In-Reply-To: <20200401061309.92442-1-ravi.bangoria@linux.ibm.com> Instead of disabling only first watchpoint, disable all available watchpoints while clearing dawr_force_enable. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> --- arch/powerpc/kernel/dawr.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c index 311e51ee09f4..5c882f07ac7d 100644 --- a/arch/powerpc/kernel/dawr.c +++ b/arch/powerpc/kernel/dawr.c @@ -50,9 +50,13 @@ int set_dawr(struct arch_hw_breakpoint *brk, int nr) return 0; } -static void set_dawr_cb(void *info) +static void disable_dawrs(void *info) { - set_dawr(info, 0); + struct arch_hw_breakpoint null_brk = {0}; + int i; + + for (i = 0; i < nr_wp_slots(); i++) + set_dawr(&null_brk, i); } static ssize_t dawr_write_file_bool(struct file *file, @@ -74,7 +78,7 @@ static ssize_t dawr_write_file_bool(struct file *file, /* If we are clearing, make sure all CPUs have the DAWR cleared */ if (!dawr_force_enable) - smp_call_function(set_dawr_cb, &null_brk, 0); + smp_call_function(disable_dawrs, NULL, 0); return rc; } -- 2.21.1
next prev parent reply other threads:[~2020-04-01 6:14 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-01 6:12 [PATCH v2 00/16] powerpc/watchpoint: Preparation for more than one watchpoint Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 6:12 ` [PATCH v2 01/16] powerpc/watchpoint: Rename current DAWR macros Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 6:12 ` [PATCH v2 02/16] powerpc/watchpoint: Add SPRN macros for second DAWR Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 6:12 ` [PATCH v2 03/16] powerpc/watchpoint: Introduce function to get nr watchpoints dynamically Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 6:29 ` Christophe Leroy 2020-04-01 6:29 ` Christophe Leroy 2020-04-01 6:50 ` Ravi Bangoria 2020-04-01 6:50 ` Ravi Bangoria 2020-04-01 7:05 ` Christophe Leroy 2020-04-01 7:05 ` Christophe Leroy 2020-04-01 6:12 ` [PATCH v2 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 6:12 ` [PATCH v2 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 7:03 ` Christophe Leroy 2020-04-01 7:03 ` Christophe Leroy 2020-04-01 6:12 ` [PATCH v2 06/16] powerpc/watchpoint: Provide DAWR number to __set_breakpoint Ravi Bangoria 2020-04-01 6:12 ` Ravi Bangoria 2020-04-01 7:03 ` Christophe Leroy 2020-04-01 7:03 ` Christophe Leroy 2020-04-01 8:57 ` Ravi Bangoria 2020-04-01 8:57 ` Ravi Bangoria 2020-04-01 9:11 ` Christophe Leroy 2020-04-01 9:11 ` Christophe Leroy 2020-04-01 9:44 ` Christophe Leroy 2020-04-01 9:44 ` Christophe Leroy 2020-04-01 6:13 ` [PATCH v2 07/16] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:32 ` Christophe Leroy 2020-04-01 6:32 ` Christophe Leroy 2020-04-01 9:19 ` Ravi Bangoria 2020-04-01 9:19 ` Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria [this message] 2020-04-01 6:13 ` [PATCH v2 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Ravi Bangoria 2020-04-01 6:33 ` Christophe Leroy 2020-04-01 6:33 ` Christophe Leroy 2020-04-01 9:00 ` Ravi Bangoria 2020-04-01 9:00 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 09/16] powerpc/watchpoint: Convert thread_struct->hw_brk to an array Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:43 ` Christophe Leroy 2020-04-01 6:43 ` Christophe Leroy 2020-04-01 9:06 ` Ravi Bangoria 2020-04-01 9:06 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 10/16] powerpc/watchpoint: Use loop for thread_struct->ptrace_bps Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 11/16] powerpc/watchpoint: Introduce is_ptrace_bp() function Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 12/16] powerpc/watchpoint: Use builtin ALIGN*() macros Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 13/16] powerpc/watchpoint: Prepare handler to handle more than one watcnhpoint Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:50 ` Christophe Leroy 2020-04-01 6:50 ` Christophe Leroy 2020-04-01 9:13 ` Ravi Bangoria 2020-04-01 9:13 ` Ravi Bangoria 2020-04-01 9:20 ` Christophe Leroy 2020-04-01 9:20 ` Christophe Leroy 2020-04-01 9:23 ` Ravi Bangoria 2020-04-01 9:23 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 14/16] powerpc/watchpoint: Don't allow concurrent perf and ptrace events Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:52 ` Christophe Leroy 2020-04-01 6:52 ` Christophe Leroy 2020-04-01 6:13 ` [PATCH v2 15/16] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria 2020-04-01 6:13 ` [PATCH v2 16/16] powerpc/watchpoint/xmon: Support 2nd dawr Ravi Bangoria 2020-04-01 6:13 ` Ravi Bangoria
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