From: Christophe Leroy <christophe.leroy@csgroup.eu> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/4] powerpc/code-patching: Don't call is_vmalloc_or_module_addr() without CONFIG_MODULES Date: Tue, 22 Mar 2022 16:40:18 +0100 [thread overview] Message-ID: <f3c701cce00a38620788c0fc43ff0b611a268c54.1647962456.git.christophe.leroy@csgroup.eu> (raw) In-Reply-To: <cover.1647962456.git.christophe.leroy@csgroup.eu> If CONFIG_MODULES is not set, there is no point in checking whether text is in module area. This reduced the time needed to activate/deactivate ftrace by more than 10% on an 8xx. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/lib/code-patching.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 00c68e7fb11e..f970f189875b 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -97,7 +97,7 @@ static int map_patch_area(void *addr, unsigned long text_poke_addr) { unsigned long pfn; - if (is_vmalloc_or_module_addr(addr)) + if (IS_ENABLED(CONFIG_MODULES) && is_vmalloc_or_module_addr(addr)) pfn = vmalloc_to_pfn(addr); else pfn = __pa_symbol(addr) >> PAGE_SHIFT; -- 2.35.1
WARNING: multiple messages have this Message-ID (diff)
From: Christophe Leroy <christophe.leroy@csgroup.eu> To: Benjamin Gray <bgray@linux.ibm.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/4] powerpc/code-patching: Don't call is_vmalloc_or_module_addr() without CONFIG_MODULES Date: Tue, 27 Sep 2022 16:33:02 +0200 [thread overview] Message-ID: <f3c701cce00a38620788c0fc43ff0b611a268c54.1647962456.git.christophe.leroy@csgroup.eu> (raw) Message-ID: <20220927143302.PcId7fyIez1zkN6cUoD5HKiHEwL5FFXBXvBEyDNiuGU@z> (raw) In-Reply-To: <cover.1647962456.git.christophe.leroy@csgroup.eu> If CONFIG_MODULES is not set, there is no point in checking whether text is in module area. This reduced the time needed to activate/deactivate ftrace by more than 10% on an 8xx. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/lib/code-patching.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 00c68e7fb11e..f970f189875b 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -97,7 +97,7 @@ static int map_patch_area(void *addr, unsigned long text_poke_addr) { unsigned long pfn; - if (is_vmalloc_or_module_addr(addr)) + if (IS_ENABLED(CONFIG_MODULES) && is_vmalloc_or_module_addr(addr)) pfn = vmalloc_to_pfn(addr); else pfn = __pa_symbol(addr) >> PAGE_SHIFT; -- 2.35.1
next prev parent reply other threads:[~2022-03-22 15:41 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-22 15:40 [PATCH v1 0/4] Kill the time spent in patch_instruction() Christophe Leroy 2022-03-22 15:40 ` Christophe Leroy [this message] 2022-09-27 14:33 ` [PATCH v1 1/4] powerpc/code-patching: Don't call is_vmalloc_or_module_addr() without CONFIG_MODULES Christophe Leroy 2022-03-22 15:40 ` [PATCH v1 2/4] powerpc/code-patching: Speed up page mapping/unmapping Christophe Leroy 2022-09-27 14:33 ` Christophe Leroy 2022-03-22 15:40 ` [PATCH v1 3/4] powerpc/code-patching: Use jump_label for testing freed initmem Christophe Leroy 2022-05-19 2:17 ` Guenter Roeck 2022-05-19 6:27 ` Christophe Leroy 2022-05-19 6:53 ` Christophe Leroy 2022-05-19 17:27 ` Christophe Leroy 2022-09-27 14:33 ` Christophe Leroy 2022-03-22 15:40 ` [PATCH v1 4/4] powerpc/code-patching: Use jump_label to check if poking_init() is done Christophe Leroy 2022-09-27 14:33 ` Christophe Leroy 2022-05-15 10:28 ` [PATCH v1 0/4] Kill the time spent in patch_instruction() Michael Ellerman 2022-05-17 6:44 ` Christophe Leroy 2022-05-17 12:37 ` Michael Ellerman 2022-05-31 6:24 ` Christophe Leroy 2022-06-24 7:06 ` Christophe Leroy 2022-09-27 14:33 ` Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 1/6] powerpc/code-patching: Use pte_offset_kernel() instead of virt_to_kpte() Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 2/6] powerpc/code-patching: Remove #ifdef CONFIG_STRICT_KERNEL_RWX Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 3/6] powerpc/feature-fixups: Refactor entry fixups patching Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 4/6] powerpc/feature-fixups: Refactor other " Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 5/6] powerpc/feature-fixups: Do not patch init section after init Christophe Leroy 2022-09-27 14:33 ` [PATCH v1 6/6] powerpc/code-patching: Remove protection against patching init addresses " Christophe Leroy 2022-09-27 14:38 ` [PATCH v1 0/4] Kill the time spent in patch_instruction() Christophe Leroy
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