From ae685380b9a1ffe5e1935852ec11f0aa38b1d77b Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 20 Aug 2013 17:44:42 -0300 Subject: [PATCH] perf trace: Add beautifier for mmap prot parm [root@zoo ~]# perf trace -e mmap,mprotect sleep 1 0.984 ( 0.015 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd62ae000 1.114 ( 0.016 ms): mmap(addr: 0, len: 125100, prot: READ, flags: 2, fd: 3, off: 0 ) = 0xd628f000 1.252 ( 0.020 ms): mmap(addr: 0x33c1600000, len: 3896312, prot: EXEC|READ, flags: 2050, fd: 3, off: 0) = 0xc1600000 1.282 ( 0.024 ms): mprotect(start: 0x33c17ad000, len: 2097152, prot: NONE ) = 0 1.315 ( 0.026 ms): mmap(addr: 0x33c19ad000, len: 24576, prot: READ|WRITE, flags: 2066, fd: 3, off: 1757184) = 0xc19ad000 1.352 ( 0.017 ms): mmap(addr: 0x33c19b3000, len: 17400, prot: READ|WRITE, flags: 50, fd: 4294967295, off: 0) = 0xc19b3000 1.415 ( 0.011 ms): mmap(addr: 0, len: 4096, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd628e000 1.440 ( 0.011 ms): mmap(addr: 0, len: 8192, prot: READ|WRITE, flags: 34, fd: 4294967295, off: 0) = 0xd628c000 1.569 ( 0.019 ms): mprotect(start: 0x606000, len: 4096, prot: READ ) = 0 1.591 ( 0.017 ms): mprotect(start: 0x33c19ad000, len: 16384, prot: READ ) = 0 1.616 ( 0.016 ms): mprotect(start: 0x33c1420000, len: 4096, prot: READ ) = 0 2.105 ( 0.018 ms): mmap(addr: 0, len: 104789808, prot: READ, flags: 2, fd: 3, off: 0 ) = 0xcfe9c000 [root@zoo ~]# Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-q1ubhdd9wigxneam616ggdsn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 41 +++++++++++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 60ee811c5129..81c20a6cc6b7 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -11,6 +11,7 @@ #include #include +#include static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, unsigned long arg) { @@ -19,6 +20,36 @@ static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, unsigned long ar #define SCA_HEX syscall_arg__scnprintf_hex +static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size, unsigned long arg) +{ + int printed = 0, prot = arg; + + if (prot == PROT_NONE) + return scnprintf(bf, size, "NONE"); +#define P_MMAP_PROT(n) \ + if (prot & PROT_##n) { \ + printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ + prot &= ~PROT_##n; \ + } + + P_MMAP_PROT(EXEC); + P_MMAP_PROT(READ); + P_MMAP_PROT(WRITE); +#ifdef PROT_SEM + P_MMAP_PROT(SEM); +#endif + P_MMAP_PROT(GROWSDOWN); + P_MMAP_PROT(GROWSUP); +#undef P_MMAP_PROT + + if (prot) + printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot); + + return printed; +} + +#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot + static struct syscall_fmt { const char *name; const char *alias; @@ -40,10 +71,14 @@ static struct syscall_fmt { .arg_scnprintf = { [2] = SCA_HEX, /* arg */ }, }, { .name = "lstat", .errmsg = true, .alias = "newlstat", }, { .name = "mmap", .hexret = true, - .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ + [2] = SCA_MMAP_PROT, /* prot */ }, }, { .name = "mprotect", .errmsg = true, - .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, - { .name = "mremap", .hexret = true, }, + .arg_scnprintf = { [0] = SCA_HEX, /* start */ + [2] = SCA_MMAP_PROT, /* prot */ }, }, + { .name = "mremap", .hexret = true, + .arg_scnprintf = { [0] = SCA_HEX, /* addr */ + [4] = SCA_HEX, /* new_addr */ }, }, { .name = "munmap", .errmsg = true, .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, { .name = "open", .errmsg = true, }, -- 2.34.1