From 871751e25d956ad24f129ca972b7851feaa61d53 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 25 Mar 2006 03:06:39 -0800 Subject: [PATCH] slab: implement /proc/slab_allocators Implement /proc/slab_allocators. It produces output like: idr_layer_cache: 80 idr_pre_get+0x33/0x4e buffer_head: 2555 alloc_buffer_head+0x20/0x75 mm_struct: 9 mm_alloc+0x1e/0x42 mm_struct: 20 dup_mm+0x36/0x370 vm_area_struct: 384 dup_mm+0x18f/0x370 vm_area_struct: 151 do_mmap_pgoff+0x2e0/0x7c3 vm_area_struct: 1 split_vma+0x5a/0x10e vm_area_struct: 11 do_brk+0x206/0x2e2 vm_area_struct: 2 copy_vma+0xda/0x142 vm_area_struct: 9 setup_arg_pages+0x99/0x214 fs_cache: 8 copy_fs_struct+0x21/0x133 fs_cache: 29 copy_process+0xf38/0x10e3 files_cache: 30 alloc_files+0x1b/0xcf signal_cache: 81 copy_process+0xbaa/0x10e3 sighand_cache: 77 copy_process+0xe65/0x10e3 sighand_cache: 1 de_thread+0x4d/0x5f8 anon_vma: 241 anon_vma_prepare+0xd9/0xf3 size-2048: 1 add_sect_attrs+0x5f/0x145 size-2048: 2 journal_init_revoke+0x99/0x302 size-2048: 2 journal_init_revoke+0x137/0x302 size-2048: 2 journal_init_inode+0xf9/0x1c4 Cc: Manfred Spraul Cc: Alexander Nyberg Cc: Pekka Enberg Cc: Christoph Lameter Cc: Ravikiran Thirumalai Signed-off-by: Al Viro DESC slab-leaks3-locking-fix EDESC From: Andrew Morton Update for slab-remove-cachep-spinlock.patch Cc: Al Viro Cc: Manfred Spraul Cc: Alexander Nyberg Cc: Pekka Enberg Cc: Christoph Lameter Cc: Ravikiran Thirumalai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/Kconfig.debug | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib/Kconfig.debug') diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index f2618e1c2b9..1fe3f897145 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -85,6 +85,10 @@ config DEBUG_SLAB allocation as well as poisoning memory on free to catch use of freed memory. This can make kmalloc/kfree-intensive workloads much slower. +config DEBUG_SLAB_LEAK + bool "Memory leak debugging" + depends on DEBUG_SLAB + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT -- cgit v1.2.3-70-g09d2 From 4a2f0acf0f951599fd9e4af95cf9483449970c26 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 25 Mar 2006 03:07:22 -0800 Subject: [PATCH] kconfig: clarify memory debug options The Kconfig text for CONFIG_DEBUG_SLAB and CONFIG_DEBUG_PAGEALLOC have always seemed a bit confusing. Change them to: CONFIG_DEBUG_SLAB: "Debug slab memory allocations" CONFIG_DEBUG_PAGEALLOC: "Debug page memory allocations" Cc: "David S. Miller" Cc: Hirokazu Takata Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/Kconfig.debug | 2 +- arch/m32r/Kconfig.debug | 2 +- arch/sparc64/Kconfig.debug | 2 +- lib/Kconfig.debug | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) (limited to 'lib/Kconfig.debug') diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug index c23da8896f3..6e97df6979e 100644 --- a/arch/i386/Kconfig.debug +++ b/arch/i386/Kconfig.debug @@ -44,7 +44,7 @@ comment "Page alloc debug is incompatible with Software Suspend on i386" depends on DEBUG_KERNEL && SOFTWARE_SUSPEND config DEBUG_PAGEALLOC - bool "Page alloc debugging" + bool "Debug page memory allocations" depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND && !HUGETLBFS help Unmap pages from the kernel linear mapping after free_pages(). diff --git a/arch/m32r/Kconfig.debug b/arch/m32r/Kconfig.debug index bbf711bab69..2e1019ddbb2 100644 --- a/arch/m32r/Kconfig.debug +++ b/arch/m32r/Kconfig.debug @@ -19,7 +19,7 @@ config DEBUG_STACK_USAGE This option will slow down process creation somewhat. config DEBUG_PAGEALLOC - bool "Page alloc debugging" + bool "Debug page memory allocations" depends on DEBUG_KERNEL && BROKEN help Unmap pages from the kernel linear mapping after free_pages(). diff --git a/arch/sparc64/Kconfig.debug b/arch/sparc64/Kconfig.debug index 3e31be494e5..afe0a7720a2 100644 --- a/arch/sparc64/Kconfig.debug +++ b/arch/sparc64/Kconfig.debug @@ -24,7 +24,7 @@ config DEBUG_BOOTMEM bool "Debug BOOTMEM initialization" config DEBUG_PAGEALLOC - bool "Page alloc debugging" + bool "Debug page memory allocations" depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND help Unmap pages from the kernel linear mapping after free_pages(). diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1fe3f897145..0bda3c5259f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -78,7 +78,7 @@ config SCHEDSTATS this adds. config DEBUG_SLAB - bool "Debug memory allocations" + bool "Debug slab memory allocations" depends on DEBUG_KERNEL && SLAB help Say Y here to have the kernel do limited verification on memory -- cgit v1.2.3-70-g09d2 From 6a0f03e0d35c10e07f1160ca75fc9a367931e38b Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sat, 25 Mar 2006 16:32:01 +0100 Subject: [PATCH] x86_64: Don't enable CONFIG_UNWIND_INFO by default for DEBUG_KERNEL DEBUG_KERNEL is often enabled just for sysrq, but this doesn't mean the user wants more heavyweight debugging information. Cc: jbeulich@novell.com Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- lib/Kconfig.debug | 1 - 1 file changed, 1 deletion(-) (limited to 'lib/Kconfig.debug') diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0bda3c5259f..7e70ab13e19 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -203,7 +203,6 @@ config UNWIND_INFO bool "Compile the kernel with frame unwind information" depends on !IA64 depends on !MODULES || !(MIPS || PARISC || PPC || SUPERH || SPARC64 || V850) - default DEBUG_KERNEL help If you say Y here the resulting kernel image will be slightly larger but not slower, and it will give very useful debugging information. -- cgit v1.2.3-70-g09d2 From ae36b883d29e53b6083ed3d1d44f254cee7507d3 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sun, 26 Mar 2006 14:38:54 +0200 Subject: [PATCH] Don't make debugfs depend on DEBUG_KERNEL We use it generally now, at least blktrace isn't a specific debug kernel feature. Signed-off-by: Jens Axboe --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/Kconfig.debug') diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7e70ab13e19..6e8a60f67c7 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -172,7 +172,7 @@ config DEBUG_IOREMAP config DEBUG_FS bool "Debug Filesystem" - depends on DEBUG_KERNEL && SYSFS + depends on SYSFS help debugfs is a virtual file system that kernel developers use to put debugging files into. Enable this option to be able to read and -- cgit v1.2.3-70-g09d2