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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-04-07 13:34:16 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-04-07 13:34:16 -0700 |
| commit | 38f4b8c0da01ae7cd9b93386842ce272d6fde9ab (patch) | |
| tree | 3c8c52201aac038094bfea7efdd0984a8f62045e /kernel/trace/trace_stack.c | |
| parent | a811454027352c762e0d5bba1b1d8f7d26bf96ae (diff) | |
| parent | 8e2c4f2844c0e8dcdfe312e5f2204854ca8532c6 (diff) | |
| download | kernel-crypto-38f4b8c0da01ae7cd9b93386842ce272d6fde9ab.tar.gz kernel-crypto-38f4b8c0da01ae7cd9b93386842ce272d6fde9ab.tar.xz kernel-crypto-38f4b8c0da01ae7cd9b93386842ce272d6fde9ab.zip | |
Merge commit 'origin/master' into for-linus/xen/master
* commit 'origin/master': (4825 commits)
Fix build errors due to CONFIG_BRANCH_TRACER=y
parport: Use the PCI IRQ if offered
tty: jsm cleanups
Adjust path to gpio headers
KGDB_SERIAL_CONSOLE check for module
Change KCONFIG name
tty: Blackin CTS/RTS
Change hardware flow control from poll to interrupt driven
Add support for the MAX3100 SPI UART.
lanana: assign a device name and numbering for MAX3100
serqt: initial clean up pass for tty side
tty: Use the generic RS485 ioctl on CRIS
tty: Correct inline types for tty_driver_kref_get()
splice: fix deadlock in splicing to file
nilfs2: support nanosecond timestamp
nilfs2: introduce secondary super block
nilfs2: simplify handling of active state of segments
nilfs2: mark minor flag for checkpoint created by internal operation
nilfs2: clean up sketch file
nilfs2: super block operations fix endian bug
...
Conflicts:
arch/x86/include/asm/thread_info.h
arch/x86/lguest/boot.c
drivers/xen/manage.c
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index d0871bc0aca..c750f65f966 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -245,16 +245,31 @@ static int trace_lookup_stack(struct seq_file *m, long i) #endif } +static void print_disabled(struct seq_file *m) +{ + seq_puts(m, "#\n" + "# Stack tracer disabled\n" + "#\n" + "# To enable the stack tracer, either add 'stacktrace' to the\n" + "# kernel command line\n" + "# or 'echo 1 > /proc/sys/kernel/stack_tracer_enabled'\n" + "#\n"); +} + static int t_show(struct seq_file *m, void *v) { long i; int size; if (v == SEQ_START_TOKEN) { - seq_printf(m, " Depth Size Location" + seq_printf(m, " Depth Size Location" " (%d entries)\n" - " ----- ---- --------\n", + " ----- ---- --------\n", max_stack_trace.nr_entries); + + if (!stack_tracer_enabled && !max_stack_size) + print_disabled(m); + return 0; } |